[SANOG] Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Apr 5 18:03:22 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 06 Apr, 2019

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

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

BGP routing table entries examined:                              743761
    Prefixes after maximum aggregation (per Origin AS):          285554
    Deaggregation factor:                                          2.60
    Unique aggregates announced (without unneeded subnets):      358387
Total ASes present in the Internet Routing Table:                 63839
    Prefixes per ASN:                                             11.65
Origin-only ASes present in the Internet Routing Table:           54939
Origin ASes announcing only one prefix:                           23724
Transit ASes present in the Internet Routing Table:                8900
Transit-only ASes present in the Internet Routing Table:            274
Average AS path length visible in the Internet Routing Table:       4.4
    Max AS path length visible:                                      34
    Max AS path prepend of ASN (206156)                              26
Prefixes from unregistered ASNs in the Routing Table:                28
    Number of instances of unregistered ASNs:                        35
Number of 32-bit ASNs allocated by the RIRs:                      26474
Number of 32-bit ASNs visible in the Routing Table:               21592
Prefixes from 32-bit ASNs in the Routing Table:                   94741
Number of bogon 32-bit ASNs visible in the Routing Table:            29
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            251
Number of addresses announced to Internet:                   2844502144
    Equivalent to 169 /8s, 139 /16s and 168 /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:               99.2
Total number of prefixes smaller than registry allocations:      249042

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

Prefixes being announced by APNIC Region ASes:                   200892
    Total APNIC prefixes after maximum aggregation:               57957
    APNIC Deaggregation factor:                                    3.47
Prefixes being announced from the APNIC address blocks:          197778
    Unique aggregates announced from the APNIC address blocks:    82200
APNIC Region origin ASes present in the Internet Routing Table:    9644
    APNIC Prefixes per ASN:                                       20.51
APNIC Region origin ASes announcing only one prefix:               2700
APNIC Region transit ASes present in the Internet Routing Table:   1432
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         30
Number of APNIC region 32-bit ASNs visible in the Routing Table:   4630
Number of APNIC addresses announced to Internet:              769411456
    Equivalent to 45 /8s, 220 /16s and 73 /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:                    219668
    Total ARIN prefixes after maximum aggregation:               103931
    ARIN Deaggregation factor:                                     2.11
Prefixes being announced from the ARIN address blocks:           218709
    Unique aggregates announced from the ARIN address blocks:    105006
ARIN Region origin ASes present in the Internet Routing Table:    18426
    ARIN Prefixes per ASN:                                        11.87
ARIN Region origin ASes announcing only one prefix:                6859
ARIN Region transit ASes present in the Internet Routing Table:    1889
Average ARIN Region AS path length visible:                         3.9
    Max ARIN Region AS path length visible:                          24
Number of ARIN region 32-bit ASNs visible in the Routing Table:    2645
Number of ARIN addresses announced to Internet:              1079698560
    Equivalent to 64 /8s, 90 /16s and 228 /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:                    205325
    Total RIPE prefixes after maximum aggregation:                97761
    RIPE Deaggregation factor:                                     2.10
Prefixes being announced from the RIPE address blocks:           201667
    Unique aggregates announced from the RIPE address blocks:    119689
RIPE Region origin ASes present in the Internet Routing Table:    25968
    RIPE Prefixes per ASN:                                         7.77
RIPE Region origin ASes announcing only one prefix:               11541
RIPE Region transit ASes present in the Internet Routing Table:    3692
Average RIPE Region AS path length visible:                         4.6
    Max RIPE Region AS path length visible:                          34
Number of RIPE region 32-bit ASNs visible in the Routing Table:    7985
Number of RIPE addresses announced to Internet:               718206336
    Equivalent to 42 /8s, 206 /16s and 245 /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:                   96613
    Total LACNIC prefixes after maximum aggregation:              21614
    LACNIC Deaggregation factor:                                   4.47
Prefixes being announced from the LACNIC address blocks:          97958
    Unique aggregates announced from the LACNIC address blocks:   42031
LACNIC Region origin ASes present in the Internet Routing Table:   8247
    LACNIC Prefixes per ASN:                                      11.88
LACNIC Region origin ASes announcing only one prefix:              2188
LACNIC Region transit ASes present in the Internet Routing Table:  1528
Average LACNIC Region AS path length visible:                       5.1
    Max LACNIC Region AS path length visible:                        27
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  5794
Number of LACNIC addresses announced to Internet:             172779008
    Equivalent to 10 /8s, 76 /16s and 102 /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:                  21234
    Total AfriNIC prefixes after maximum aggregation:              4269
    AfriNIC Deaggregation factor:                                  4.97
Prefixes being announced from the AfriNIC address blocks:         27398
    Unique aggregates announced from the AfriNIC address blocks:   9229
AfriNIC Region origin ASes present in the Internet Routing Table:  1261
    AfriNIC Prefixes per ASN:                                     21.73
AfriNIC Region origin ASes announcing only one prefix:              436
AfriNIC Region transit ASes present in the Internet Routing Table:  243
Average AfriNIC Region AS path length visible:                      4.9
    Max AfriNIC Region AS path length visible:                       21
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:  538
Number of AfriNIC addresses announced to Internet:            104150016
    Equivalent to 6 /8s, 53 /16s and 52 /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
  7545         4728        546     549  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538         4706       4192      74  ERX-CERNET-BKB China Education and Rese
  7552         3131       1313      54  VIETEL-AS-AP Viettel Group, VN
 45899         3038       1734     111  VNPT-AS-VN VNPT Corp, VN
  9829         2748       1496     551  BSNL-NIB National Internet Backbone, IN
  4766         2613      11120     761  KIXS-AS-KR Korea Telecom, KR
  9808         2435       8699      27  CMNET-GD Guangdong Mobile Communication
  9394         2180       4906      29  CTTNET China TieTong Telecommunications
  4755         2149        429     186  TATACOMM-AS TATA Communications formerl
  9498         2032        426     167  BBIL-AP BHARTI Airtel Ltd., IN

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
 11492         3642        238     588  CABLEONE - CABLE ONE, INC., US
  6327         3600       1325      94  SHAW - Shaw Communications Inc., CA
 22773         3388       2976     161  ASN-CXA-ALL-CCI-22773-RDC - Cox Communi
 16509         2606       5902    1078  AMAZON-02 - Amazon.com, Inc., US
 16625         2348       1294    1791  AKAMAI-AS - Akamai Technologies, Inc., 
 30036         2152        355     130  MEDIACOM-ENTERPRISE-BUSINESS - Mediacom
 20115         2151       2751     532  CHARTER-20115 - Charter Communications,
 18566         2109        405     108  MEGAPATH5-US - MegaPath Corporation, US
  5650         2086       3074    1462  FRONTIER-FRTR - Frontier Communications
   209         2056       5103     577  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         5430       1628     139  UNI2-AS, ES
 39891         3778        203      20  ALJAWWALSTC-AS, SA
  8551         3254        378      45  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 20940         2644        539    1919  AKAMAI-ASN1, US
 12389         2225       2221     636  ROSTELECOM-AS, RU
 34984         2081        342     535  TELLCOM-AS, TR
  9121         1683       1693      19  TTNET, TR
 13188         1605        100      47  TRIOLAN, UA
  9009         1409        147     767  M247, GB
  8402         1259        545      15  CORBINA-AS OJSC "Vimpelcom", RU

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         5663       3338     592  Uninet S.A. de C.V., MX
 10620         3476        537     375  Telmex Colombia S.A., CO
 11830         2706        384      34  Instituto Costarricense de Electricidad
  7303         1454        992     247  Telecom Argentina S.A., AR
  6503         1354        433      53  Axtel, S.A.B. de C.V., MX
 28573         1348       2249     187  CLARO S.A., BR
  6147         1259        374      25  Telefonica del Peru S.A.A., PE
  3816         1023        505     113  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
 13999          962        524     248  Mega Cable, S.A. de C.V., MX
 11172          955        144      63  Alestra, S. de R.L. 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         1204        393      21  LINKdotNET-AS, EG
 37611          892        107       9  Afrihost, ZA
 24835          883        646      21  RAYA-AS, EG
 36903          827        416     126  MT-MPLS, MA
 36992          816       1531      71  ETISALAT-MISR, EG
  8452          706       1731      19  TE-AS TE-AS, EG
 29571          495         70      12  ORANGE-COTE-IVOIRE, CI
 37492          470        470      57  ORANGE-, TN
 15706          420         32       6  Sudatel, SD
 37342          420         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         5663       3338     592  Uninet S.A. de C.V., MX
 12479         5430       1628     139  UNI2-AS, ES
  7545         4728        546     549  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538         4706       4192      74  ERX-CERNET-BKB China Education and Rese
 39891         3778        203      20  ALJAWWALSTC-AS, SA
 11492         3642        238     588  CABLEONE - CABLE ONE, INC., US
  6327         3600       1325      94  SHAW - Shaw Communications Inc., CA
 10620         3476        537     375  Telmex Colombia S.A., CO
 22773         3388       2976     161  ASN-CXA-ALL-CCI-22773-RDC - Cox Communi
  8551         3254        378      45  BEZEQ-INTERNATIONAL-AS Bezeqint Interne

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       5430         5291   UNI2-AS, ES
  4538       4706         4632   ERX-CERNET-BKB China Education and Research Net
  7545       4728         4179   TPG-INTERNET-AP TPG Telecom Limited, AU
 39891       3778         3758   ALJAWWALSTC-AS, SA
  6327       3600         3506   SHAW - Shaw Communications Inc., CA
 22773       3388         3227   ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 
  8551       3254         3209   BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 10620       3476         3101   Telmex Colombia S.A., CO
  7552       3131         3077   VIETEL-AS-AP Viettel Group, VN
 11492       3642         3054   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
  65550   DOCUMENT     81.8.34.0/24         15924       BORUSANTELEKOM-AS, TR
  65550   DOCUMENT     81.8.35.0/24         15924       BORUSANTELEKOM-AS, TR
  66087   UNALLOCATED  103.136.231.0/24    138903       KHILGAON-AS-AP KHILGAON DOT NE
 651315   UNALLOCATED  103.137.6.0/24       17806       MANGOTELESERVICE-AS-BD Tire-1 
 651315   UNALLOCATED  103.137.7.0/24       17806       MANGOTELESERVICE-AS-BD Tire-1 
  65549   DOCUMENT     117.239.163.0/24     65544       UNKNOWN
  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

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

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
41.220.48.0/20       36900    -Reserved AS-, ZZ
43.255.80.0/24       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      /11:100     /12:291     
/13:567     /14:1136    /15:1909    /16:13351   /17:7968    /18:13896   
/19:25599   /20:39974   /21:46167   /22:93269   /23:75655   /24:422757  
/25:1064    /26:0       /27:0       /28:0       /29:0       /30:0       
/31:0       /32:0       

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

   ASN   No of nets  Total ann.  Description
 12479     4343          5430    UNI2-AS, ES
  6327     3374          3600    SHAW - Shaw Communications Inc., CA
 39891     2946          3778    ALJAWWALSTC-AS, SA
 11492     2848          3642    CABLEONE - CABLE ONE, INC., US
  8551     2707          3254    BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 22773     2627          3388    ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 
 11830     2051          2706    Instituto Costarricense de Electricidad y Telec
 18566     2004          2109    MEGAPATH5-US - MegaPath Corporation, US
 30036     1899          2152    MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communi
  5650     1754          2086    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)
----------------------------------------------

   1:1601      2:952       4:22        5:3025      6:45        7:1      
   8:1286      9:1        11:3        12:1806     13:324      14:1991   
  15:36       16:4        17:241      18:58       20:49       23:2657   
  24:2516     25:2        27:2496     31:1977     32:97       35:36     
  36:841      37:3048     38:1715     39:294      40:119      41:3280   
  42:768      43:2026     44:149      45:7147     46:3248     47:257    
  49:1356     50:1104     51:322      52:1016     54:285      55:2      
  56:9        57:42       58:1786     59:1080     60:506      61:2125   
  62:2124     63:1813     64:4961     65:2214     66:4843     67:2715   
  68:1168     69:3529     70:1329     71:599      72:2448     74:2764   
  75:514      76:548      77:1731     78:1766     79:2321     80:1811   
  81:1507     82:1134     83:907      84:1116     85:2303     86:528    
  87:1552     88:1053     89:2605     90:220      91:6555     92:1366   
  93:2437     94:2551     95:3228     96:927      97:343      98:948    
  99:210     100:87      101:1153    102:516     103:20878   104:3521   
 105:252     106:811     107:1779    108:692     109:3731    110:1649   
 111:1905    112:1487    113:1395    114:1139    115:1722    116:1720   
 117:1900    118:2186    119:1644    120:1025    121:1043    122:2341   
 123:1644    124:1472    125:1978    128:1265    129:822     130:531    
 131:1652    132:742     133:219     134:1052    135:242     136:573    
 137:718     138:2058    139:850     140:580     141:858     142:793    
 143:1068    144:859     145:494     146:1263    147:835     148:1723   
 149:821     150:783     151:1012    152:1053    153:323     154:2778   
 155:903     156:1619    157:952     158:640     159:1929    160:1529   
 161:919     162:2714    163:798     164:1188    165:1564    166:445    
 167:1392    168:3292    169:868     170:4142    171:574     172:1136   
 173:2204    174:1038    175:910     176:2354    177:4221    178:2528   
 179:1460    180:2181    181:2404    182:2665    183:1073    184:1207   
 185:14941   186:3664    187:2479    188:2893    189:1967    190:8316   
 191:1570    192:10052   193:6662    194:5413    195:4100    196:3089   
 197:1772    198:5839    199:5987    200:7214    201:5127    202:10407  
 203:10113   204:4544    205:3022    206:3220    207:3248    208:3967   
 209:4242    210:3936    211:2001    212:3158    213:2929    214:1093   
 215:54      216:5940    217:2235    218:880     219:580     220:1860   
 221:968     222:987     223:1363   

End of report


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