[SANOG] Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Jan 18 18:03:25 UTC 2019


This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.

The posting is sent to APOPS, NANOG, AfNOG, SANOG, PacNOG, SAFNOG
TZNOG, MENOG, BJNOG, SDNOG, CMNOG, LACNOG and the RIPE Routing WG.

Daily listings are sent to bgp-stats at lists.apnic.net

For historical data, please see http://thyme.rand.apnic.net.

If you have any comments please contact Philip Smith <pfsinoz at gmail.com>.

Routing Table Report   04:00 +10GMT Sat 19 Jan, 2019

Report Website:     http://thyme.rand.apnic.net
Detailed Analysis:  http://thyme.rand.apnic.net/current/

Analysis Summary
----------------

BGP routing table entries examined:                              734004
    Prefixes after maximum aggregation (per Origin AS):          282378
    Deaggregation factor:                                          2.60
    Unique aggregates announced (without unneeded subnets):      353532
Total ASes present in the Internet Routing Table:                 62962
    Prefixes per ASN:                                             11.66
Origin-only ASes present in the Internet Routing Table:           54273
Origin ASes announcing only one prefix:                           23530
Transit ASes present in the Internet Routing Table:                8689
Transit-only ASes present in the Internet Routing Table:            265
Average AS path length visible in the Internet Routing Table:       4.2
    Max AS path length visible:                                      31
    Max AS path prepend of ASN ( 16327)                              25
Prefixes from unregistered ASNs in the Routing Table:                22
    Number of instances of unregistered ASNs:                        24
Number of 32-bit ASNs allocated by the RIRs:                      25491
Number of 32-bit ASNs visible in the Routing Table:               20715
Prefixes from 32-bit ASNs in the Routing Table:                   89526
Number of bogon 32-bit ASNs visible in the Routing Table:            16
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            273
Number of addresses announced to Internet:                   2841952643
    Equivalent to 169 /8s, 100 /16s and 193 /24s
    Percentage of available address space announced:               76.8
    Percentage of allocated address space announced:               76.8
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               99.1
Total number of prefixes smaller than registry allocations:      245866

APNIC Region Analysis Summary
-----------------------------

Prefixes being announced by APNIC Region ASes:                   199790
    Total APNIC prefixes after maximum aggregation:               57093
    APNIC Deaggregation factor:                                    3.50
Prefixes being announced from the APNIC address blocks:          196929
    Unique aggregates announced from the APNIC address blocks:    81448
APNIC Region origin ASes present in the Internet Routing Table:    9384
    APNIC Prefixes per ASN:                                       20.99
APNIC Region origin ASes announcing only one prefix:               2643
APNIC Region transit ASes present in the Internet Routing Table:   1386
Average APNIC Region AS path length visible:                        4.1
    Max APNIC Region AS path length visible:                         26
Number of APNIC region 32-bit ASNs visible in the Routing Table:   4378
Number of APNIC addresses announced to Internet:              769374242
    Equivalent to 45 /8s, 219 /16s and 184 /24s
APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079, 55296-56319,
                       58368-59391, 63488-64098, 64297-64395, 131072-139577
APNIC Address Blocks     1/8,  14/8,  27/8,  36/8,  39/8,  42/8,  43/8,
                        49/8,  58/8,  59/8,  60/8,  61/8, 101/8, 103/8,
                       106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8,
                       116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8,
                       123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8,
                       163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8,
                       203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8,
                       222/8, 223/8,

ARIN Region Analysis Summary
----------------------------

Prefixes being announced by ARIN Region ASes:                    217361
    Total ARIN prefixes after maximum aggregation:               103199
    ARIN Deaggregation factor:                                     2.11
Prefixes being announced from the ARIN address blocks:           216564
    Unique aggregates announced from the ARIN address blocks:    103707
ARIN Region origin ASes present in the Internet Routing Table:    18321
    ARIN Prefixes per ASN:                                        11.82
ARIN Region origin ASes announcing only one prefix:                6799
ARIN Region transit ASes present in the Internet Routing Table:    1847
Average ARIN Region AS path length visible:                         3.8
    Max ARIN Region AS path length visible:                          23
Number of ARIN region 32-bit ASNs visible in the Routing Table:    2549
Number of ARIN addresses announced to Internet:              1079601824
    Equivalent to 64 /8s, 89 /16s and 106 /24s
ARIN AS Blocks         1-1876, 1902-2042, 2044-2046, 2048-2106
(pre-ERX allocations)  2138-2584, 2615-2772, 2823-2829, 2880-3153
                       3354-4607, 4865-5119, 5632-6655, 6912-7466
                       7723-8191, 10240-12287, 13312-15359, 16384-17407
                       18432-20479, 21504-23551, 25600-26591,
                       26624-27647, 29696-30719, 31744-33791
                       35840-36863, 39936-40959, 46080-47103
                       53248-55295, 62464-63487, 64198-64296, 393216-399260
ARIN Address Blocks      3/8,   4/8,   6/8,   7/8,   8/8,   9/8,  11/8,
                        12/8,  13/8,  15/8,  16/8,  17/8,  18/8,  19/8,
                        20/8,  21/8,  22/8,  23/8,  24/8,  26/8,  28/8,
                        29/8,  30/8,  32/8,  33/8,  34/8,  35/8,  38/8,
                        40/8,  44/8,  45/8,  47/8,  48/8,  50/8,  52/8,
                        53/8,  54/8,  55/8,  56/8,  57/8,  63/8,  64/8,
                        65/8,  66/8,  67/8,  68/8,  69/8,  70/8,  71/8,
                        72/8,  73/8,  74/8,  75/8,  76/8,  96/8,  97/8,
                        98/8,  99/8, 100/8, 104/8, 107/8, 108/8, 128/8,
                       129/8, 130/8, 131/8, 132/8, 134/8, 135/8, 136/8,
                       137/8, 138/8, 139/8, 140/8, 142/8, 143/8, 144/8,
                       146/8, 147/8, 148/8, 149/8, 152/8, 155/8, 156/8,
                       157/8, 158/8, 159/8, 160/8, 161/8, 162/8, 164/8,
                       165/8, 166/8, 167/8, 168/8, 169/8, 170/8, 172/8,
                       173/8, 174/8, 184/8, 192/8, 198/8, 199/8, 204/8,
                       205/8, 206/8, 207/8, 208/8, 209/8, 214/8, 215/8,
                       216/8,

RIPE Region Analysis Summary
----------------------------

Prefixes being announced by RIPE Region ASes:                    201336
    Total RIPE prefixes after maximum aggregation:                95847
    RIPE Deaggregation factor:                                     2.10
Prefixes being announced from the RIPE address blocks:           197689
    Unique aggregates announced from the RIPE address blocks:    116800
RIPE Region origin ASes present in the Internet Routing Table:    25749
    RIPE Prefixes per ASN:                                         7.68
RIPE Region origin ASes announcing only one prefix:               11481
RIPE Region transit ASes present in the Internet Routing Table:    3615
Average RIPE Region AS path length visible:                         4.4
    Max RIPE Region AS path length visible:                          30
Number of RIPE region 32-bit ASNs visible in the Routing Table:    7738
Number of RIPE addresses announced to Internet:               716348864
    Equivalent to 42 /8s, 178 /16s and 157 /24s
RIPE AS Blocks         1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations)  2773-2822, 2830-2879, 3154-3353, 5377-5631
                       6656-6911, 8192-9215, 12288-13311, 15360-16383
                       20480-21503, 24576-25599, 28672-29695
                       30720-31743, 33792-35839, 38912-39935
                       40960-45055, 47104-52223, 56320-58367
                       59392-61439, 61952-62463, 64396-64495
                       196608-210331
RIPE Address Blocks      2/8,   5/8,  25/8,  31/8,  37/8,  46/8,  51/8,
                        62/8,  77/8,  78/8,  79/8,  80/8,  81/8,  82/8,
                        83/8,  84/8,  85/8,  86/8,  87/8,  88/8,  89/8,
                        90/8,  91/8,  92/8,  93/8,  94/8,  95/8, 109/8,
                       141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8,
                       193/8, 194/8, 195/8, 212/8, 213/8, 217/8,

LACNIC Region Analysis Summary
------------------------------

Prefixes being announced by LACNIC Region ASes:                   95296
    Total LACNIC prefixes after maximum aggregation:              22034
    LACNIC Deaggregation factor:                                   4.32
Prefixes being announced from the LACNIC address blocks:          96718
    Unique aggregates announced from the LACNIC address blocks:   42241
LACNIC Region origin ASes present in the Internet Routing Table:   7994
    LACNIC Prefixes per ASN:                                      12.10
LACNIC Region origin ASes announcing only one prefix:              2186
LACNIC Region transit ASes present in the Internet Routing Table:  1494
Average LACNIC Region AS path length visible:                       5.0
    Max LACNIC Region AS path length visible:                        31
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  5547
Number of LACNIC addresses announced to Internet:             173205248
    Equivalent to 10 /8s, 82 /16s and 231 /24s
LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       61440-61951, 64099-64197, 262144-270748 + ERX transfers
LACNIC Address Blocks  177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8,
                       191/8, 200/8, 201/8,

AfriNIC Region Analysis Summary
-------------------------------

Prefixes being announced by AfriNIC Region ASes:                  20198
    Total AfriNIC prefixes after maximum aggregation:              4186
    AfriNIC Deaggregation factor:                                  4.83
Prefixes being announced from the AfriNIC address blocks:         25831
    Unique aggregates announced from the AfriNIC address blocks:   9092
AfriNIC Region origin ASes present in the Internet Routing Table:  1232
    AfriNIC Prefixes per ASN:                                     20.97
AfriNIC Region origin ASes announcing only one prefix:              421
AfriNIC Region transit ASes present in the Internet Routing Table:  242
Average AfriNIC Region AS path length visible:                      4.5
    Max AfriNIC Region AS path length visible:                       19
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:  503
Number of AfriNIC addresses announced to Internet:            103019520
    Equivalent to 6 /8s, 35 /16s and 244 /24s
AfriNIC AS Blocks      36864-37887, 327680-328703 & ERX transfers
AfriNIC Address Blocks  41/8, 102/8, 105/8, 154/8, 196/8, 197/8,

APNIC Region per AS prefix count summary
----------------------------------------

   ASN   No of nets  /20 equiv  MaxAgg  Description
  4538         4649       4192      74  ERX-CERNET-BKB China Education and Rese
  7545         4610        524     522  TPG-INTERNET-AP TPG Telecom Limited, AU
  7552         3043       1159      92  VIETEL-AS-AP Viettel Group, VN
 45899         3000       1721     111  VNPT-AS-VN VNPT Corp, VN
  4766         2809      11127     767  KIXS-AS-KR Korea Telecom, KR
  9829         2749       1496     551  BSNL-NIB National Internet Backbone, IN
  9808         2473       8699      26  CMNET-GD Guangdong Mobile Communication
  9394         2401       4906      29  CTTNET China TieTong Telecommunications
  4755         2143        438     181  TATACOMM-AS TATA Communications formerl
 17974         2035        968      50  TELKOMNET-AS2-AP PT Telekomunikasi Indo

Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-APNIC

ARIN Region per AS prefix count summary
---------------------------------------

   ASN   No of nets  /20 equiv  MaxAgg  Description
  6327         3536       1326      92  SHAW - Shaw Communications Inc., CA
 11492         3490        225     613  CABLEONE - CABLE ONE, INC., US
 22773         3310       2979     174  ASN-CXA-ALL-CCI-22773-RDC - Cox Communi
 16509         2606       5374     989  AMAZON-02 - Amazon.com, Inc., US
 16625         2255       1238    1704  AKAMAI-AS - Akamai Technologies, Inc., 
 20115         2149       2753     537  CHARTER-20115 - Charter Communications,
 18566         2136        405     108  MEGAPATH5-US - MegaPath Corporation, US
 30036         2118        355     111  MEDIACOM-ENTERPRISE-BUSINESS - Mediacom
  5650         2089       3074    1462  FRONTIER-FRTR - Frontier Communications
   209         2071       5076     585  CENTURYLINK-US-LEGACY-QWEST - CenturyLi

Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-ARIN

RIPE Region per AS prefix count summary
---------------------------------------

   ASN   No of nets  /20 equiv  MaxAgg  Description
 12479         5302       1628     138  UNI2-AS, ES
 39891         3778        203      20  ALJAWWALSTC-AS, SA
  8551         3283        378      43  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 20940         2640        573    1937  AKAMAI-ASN1, US
 12389         2230       2220     631  ROSTELECOM-AS, RU
 34984         2056        338     525  TELLCOM-AS, TR
  9121         1690       1691      17  TTNET, TR
 13188         1604        100      46  TRIOLAN, UA
  8402         1301        545      15  CORBINA-AS OJSC "Vimpelcom", RU
  9009         1279        139     714  M247, GB

Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-RIPE

LACNIC Region per AS prefix count summary
-----------------------------------------

   ASN   No of nets  /20 equiv  MaxAgg  Description
  8151         5518       3326     588  Uninet S.A. de C.V., MX
 10620         3143        473     915  Telmex Colombia S.A., CO
 11830         2675        371      59  Instituto Costarricense de Electricidad
  6503         1620        449      54  Axtel, S.A.B. de C.V., MX
  7303         1441        961     226  Telecom Argentina S.A., AR
 28573         1178       2239     183  CLARO S.A., BR
  6147         1088        377      29  Telefonica del Peru S.A.A., PE
  3816         1029        511     115  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
 11172          935        143      66  Alestra, S. de R.L. de C.V., MX
 13999          928        535     253  Mega Cable, S.A. de C.V., MX

Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-LACNIC

AfriNIC Region per AS prefix count summary
------------------------------------------

   ASN   No of nets  /20 equiv  MaxAgg  Description
 24863         1148        393      22  LINKdotNET-AS, EG
 37611          903        107       9  Afrihost, ZA
 36903          797        401     139  MT-MPLS, MA
 36992          784       1411      44  ETISALAT-MISR, EG
 24835          684        634      21  RAYA-AS, EG
  8452          642       1731      20  TE-AS TE-AS, EG
 29571          482         70      13  ORANGE-COTE-IVOIRE, CI
 37492          459        470      57  ORANGE-, TN
 15399          417         45      11  WANANCHI-, KE
 37342          416         32       1  MOVITEL, MZ

Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-AFRINIC

Global Per AS prefix count summary
----------------------------------

   ASN   No of nets  /20 equiv  MaxAgg  Description
  8151         5518       3326     588  Uninet S.A. de C.V., MX
 12479         5302       1628     138  UNI2-AS, ES
  4538         4649       4192      74  ERX-CERNET-BKB China Education and Rese
  7545         4610        524     522  TPG-INTERNET-AP TPG Telecom Limited, AU
 39891         3778        203      20  ALJAWWALSTC-AS, SA
  6327         3536       1326      92  SHAW - Shaw Communications Inc., CA
 11492         3490        225     613  CABLEONE - CABLE ONE, INC., US
 22773         3310       2979     174  ASN-CXA-ALL-CCI-22773-RDC - Cox Communi
  8551         3283        378      43  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 10620         3143        473     915  Telmex Colombia S.A., CO

Complete listing at http://thyme.rand.apnic.net/current/data-ASnet

Global Per AS Maximum Aggr summary
----------------------------------

  ASN   No of nets  Net Savings  Description
 12479       5302         5164   UNI2-AS, ES
  4538       4649         4575   ERX-CERNET-BKB China Education and Research Net
  7545       4610         4088   TPG-INTERNET-AP TPG Telecom Limited, AU
 39891       3778         3758   ALJAWWALSTC-AS, SA
  6327       3536         3444   SHAW - Shaw Communications Inc., CA
  8551       3283         3240   BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 22773       3310         3136   ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 
  7552       3043         2951   VIETEL-AS-AP Viettel Group, VN
 45899       3000         2889   VNPT-AS-VN VNPT Corp, VN
 11492       3490         2877   CABLEONE - CABLE ONE, INC., US

Complete listing at http://thyme.rand.apnic.net/current/data-CIDRnet

List of Unregistered Origin ASNs (Global)
-----------------------------------------

Bad AS    Designation  Network              Transit AS  Description
 230105   UNALLOCATED  38.110.79.0/24       23015       CMC180-TOR-AS - Cambridge Merc
 266842   UNALLOCATED  45.238.156.0/22     265680       HNTELCO S.A, HN
 174405   UNALLOCATED  103.217.158.0/24    135405       TMHTTWTL-AS-AP WELINK, MM
  64339   UNALLOCATED  143.0.108.0/22       18747       IFX18747 - IFX Corporation, US
  64355   UNALLOCATED  156.40.196.0/24      30387       NIH-NET-NCCS - National Instit
  64011   UNALLOCATED  166.133.128.0/18     20057       ATT-MOBILITY-LLC-AS20057 - AT&
  64011   UNALLOCATED  166.133.192.0/18     20057       ATT-MOBILITY-LLC-AS20057 - AT&
  64011   UNALLOCATED  166.184.9.0/24       20057       ATT-MOBILITY-LLC-AS20057 - AT&
  64011   UNALLOCATED  166.220.64.0/19      20057       ATT-MOBILITY-LLC-AS20057 - AT&
  64011   UNALLOCATED  166.220.96.0/19      20057       ATT-MOBILITY-LLC-AS20057 - AT&

Complete listing at http://thyme.rand.apnic.net/current/data-badAS

Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------

Prefix             Origin AS  Description
198.18.1.19/32        7497     CSTNET-AS-AP Computer Network Information Cente

Complete listing at http://thyme.rand.apnic.net/current/data-dsua

Advertised Unallocated Addresses
--------------------------------

Network            Origin AS  Description
27.100.7.0/24        56096    UNKNOWN
27.126.156.0/22      55827    UNKNOWN
27.126.156.0/23      55827    UNKNOWN
27.126.158.0/23      55827    UNKNOWN
41.76.136.0/22       37500    -Reserved AS-, ZZ
41.76.140.0/22       37500    -Reserved AS-, ZZ
41.78.92.0/22        14988    BTC-GATE1, BW
41.78.180.0/23       37265    -Reserved AS-, ZZ
43.255.80.0/24       36351    SOFTLAYER - SoftLayer Technologies Inc., US
43.255.82.0/24       36351    SOFTLAYER - SoftLayer Technologies Inc., US

Complete listing at http://thyme.rand.apnic.net/current/data-add-IANA

Number of prefixes announced per prefix length (Global)
-------------------------------------------------------

 /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
 /7:0        /8:12       /9:10      /10:36      /11:99      /12:292     
/13:568     /14:1129    /15:1917    /16:13358   /17:7881    /18:13838   
/19:25541   /20:39660   /21:46167   /22:91397   /23:74725   /24:414525  
/25:922     /26:827     /27:877     /28:20      /29:6       /30:7       
/31:0       /32:190     

Advertised prefixes smaller than registry allocations
-----------------------------------------------------

   ASN   No of nets  Total ann.  Description
 12479     4153          5302    UNI2-AS, ES
  6327     3299          3536    SHAW - Shaw Communications Inc., CA
 39891     2946          3778    ALJAWWALSTC-AS, SA
 11492     2763          3490    CABLEONE - CABLE ONE, INC., US
  8551     2739          3283    BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 22773     2549          3310    ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 
 18566     2031          2136    MEGAPATH5-US - MegaPath Corporation, US
 11830     2021          2675    Instituto Costarricense de Electricidad y Telec
 30036     1864          2118    MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communi
  5650     1761          2089    FRONTIER-FRTR - Frontier Communications of Amer

Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos

Number of /24s announced per /8 block (Global)
----------------------------------------------

   1:1612      2:895       3:1         4:23        5:2779      6:43     
   7:1         8:1176     12:1874     13:307      14:1890     15:36     
  16:2        17:218      18:59       20:49       23:2590     24:2413   
  25:2        27:2553     31:2040     32:92       35:31       36:827    
  37:3012     38:1606     39:289      40:122      41:3130     42:729    
  43:2000     44:140      45:6508     46:3158     47:247      49:1329   
  50:1084     51:320      52:1075     54:360      55:1        56:6      
  57:41       58:1715     59:1058     60:460      61:2070     62:2202   
  63:1811     64:5095     65:2194     66:4820     67:2676     68:1153   
  69:3453     70:1151     71:604      72:2281     74:2752     75:416    
  76:542      77:1719     78:1757     79:2316     80:1651     81:1431   
  82:1068     83:899      84:1082     85:2137     86:559      87:1544   
  88:983      89:2398     90:211      91:6556     92:1228     93:2375   
  94:2428     95:3204     96:910      97:349      98:938      99:169    
 100:87      101:1159    102:355     103:19831   104:3559    105:245    
 106:875     107:1822    108:695     109:3646    110:1642    111:1866   
 112:1403    113:1404    114:1154    115:1724    116:1655    117:1917   
 118:2215    119:1674    120:1063    121:1026    122:2365    123:1638   
 124:1443    125:1947    128:1197    129:693     130:520     131:1636   
 132:707     133:216     134:1046    135:229     136:544     137:679    
 138:1968    139:812     140:570     141:774     142:799     143:1004   
 144:908     145:504     146:1244    147:776     148:1716    149:810    
 150:781     151:1002    152:975     153:324     154:2412    155:969    
 156:1637    157:874     158:659     159:1907    160:1497    161:908    
 162:2659    163:775     164:1119    165:1590    166:452     167:1368   
 168:3261    169:870     170:4010    171:501     172:1067    173:2155   
 174:1000    175:869     176:2290    177:4069    178:2564    179:1291   
 180:2084    181:2382    182:2675    183:1059    184:1136    185:14570  
 186:3699    187:2439    188:2956    189:2095    190:8297    191:1420   
 192:10041   193:6523    194:5321    195:4036    196:2900    197:1729   
 198:5724    199:5951    200:7409    201:5026    202:10119   203:10112  
 204:4622    205:3012    206:3295    207:3265    208:3956    209:4214   
 210:3923    211:1983    212:3041    213:2834    214:1068    215:52     
 216:5982    217:2198    218:920     219:572     220:1833    221:995    
 222:977     223:1428   

End of report


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