[SANOG] Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Apr 12 18:03:32 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 13 Apr, 2019

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

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

BGP routing table entries examined:                              745313
    Prefixes after maximum aggregation (per Origin AS):          286294
    Deaggregation factor:                                          2.60
    Unique aggregates announced (without unneeded subnets):      358952
Total ASes present in the Internet Routing Table:                 63889
    Prefixes per ASN:                                             11.67
Origin-only ASes present in the Internet Routing Table:           54986
Origin ASes announcing only one prefix:                           23700
Transit ASes present in the Internet Routing Table:                8903
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:                25
    Number of instances of unregistered ASNs:                        29
Number of 32-bit ASNs allocated by the RIRs:                      26580
Number of 32-bit ASNs visible in the Routing Table:               21664
Prefixes from 32-bit ASNs in the Routing Table:                   94966
Number of bogon 32-bit ASNs visible in the Routing Table:            24
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            242
Number of addresses announced to Internet:                   2849895552
    Equivalent to 169 /8s, 221 /16s and 244 /24s
    Percentage of available address space announced:               77.0
    Percentage of allocated address space announced:               77.0
    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:      249446

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

Prefixes being announced by APNIC Region ASes:                   200535
    Total APNIC prefixes after maximum aggregation:               58096
    APNIC Deaggregation factor:                                    3.45
Prefixes being announced from the APNIC address blocks:          197351
    Unique aggregates announced from the APNIC address blocks:    82271
APNIC Region origin ASes present in the Internet Routing Table:    9649
    APNIC Prefixes per ASN:                                       20.45
APNIC Region origin ASes announcing only one prefix:               2702
APNIC Region transit ASes present in the Internet Routing Table:   1426
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         26
Number of APNIC region 32-bit ASNs visible in the Routing Table:   4640
Number of APNIC addresses announced to Internet:              773494912
    Equivalent to 46 /8s, 26 /16s and 152 /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:                    221747
    Total ARIN prefixes after maximum aggregation:               104303
    ARIN Deaggregation factor:                                     2.13
Prefixes being announced from the ARIN address blocks:           220762
    Unique aggregates announced from the ARIN address blocks:    105233
ARIN Region origin ASes present in the Internet Routing Table:    18426
    ARIN Prefixes per ASN:                                        11.98
ARIN Region origin ASes announcing only one prefix:                6824
ARIN Region transit ASes present in the Internet Routing Table:    1891
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:    2655
Number of ARIN addresses announced to Internet:              1079234176
    Equivalent to 64 /8s, 83 /16s and 206 /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:                    205349
    Total RIPE prefixes after maximum aggregation:                97932
    RIPE Deaggregation factor:                                     2.10
Prefixes being announced from the RIPE address blocks:           201735
    Unique aggregates announced from the RIPE address blocks:    119703
RIPE Region origin ASes present in the Internet Routing Table:    25987
    RIPE Prefixes per ASN:                                         7.76
RIPE Region origin ASes announcing only one prefix:               11538
RIPE Region transit ASes present in the Internet Routing Table:    3697
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:    8009
Number of RIPE addresses announced to Internet:               718764160
    Equivalent to 42 /8s, 215 /16s and 120 /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:                   96391
    Total LACNIC prefixes after maximum aggregation:              21650
    LACNIC Deaggregation factor:                                   4.45
Prefixes being announced from the LACNIC address blocks:          97742
    Unique aggregates announced from the LACNIC address blocks:   42278
LACNIC Region origin ASes present in the Internet Routing Table:   8268
    LACNIC Prefixes per ASN:                                      11.82
LACNIC Region origin ASes announcing only one prefix:              2198
LACNIC Region transit ASes present in the Internet Routing Table:  1530
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:  5814
Number of LACNIC addresses announced to Internet:             173673728
    Equivalent to 10 /8s, 90 /16s and 13 /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:                  21265
    Total AfriNIC prefixes after maximum aggregation:              4292
    AfriNIC Deaggregation factor:                                  4.95
Prefixes being announced from the AfriNIC address blocks:         27481
    Unique aggregates announced from the AfriNIC address blocks:   9244
AfriNIC Region origin ASes present in the Internet Routing Table:  1267
    AfriNIC Prefixes per ASN:                                     21.69
AfriNIC Region origin ASes announcing only one prefix:              438
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:                       24
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:  546
Number of AfriNIC addresses announced to Internet:            104472832
    Equivalent to 6 /8s, 58 /16s and 33 /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         4715        545     547  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538         4468       4192      74  ERX-CERNET-BKB China Education and Rese
  7552         3136       1305      53  VIETEL-AS-AP Viettel Group, VN
 45899         3007       1736     112  VNPT-AS-VN VNPT Corp, VN
  9829         2734       1496     551  BSNL-NIB National Internet Backbone, IN
  4766         2613      11120     761  KIXS-AS-KR Korea Telecom, KR
  9808         2436       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         2042        427     170  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         3644        238     589  CABLEONE - CABLE ONE, INC., US
  6327         3616       1325      94  SHAW - Shaw Communications Inc., CA
 22773         3392       2976     161  ASN-CXA-ALL-CCI-22773-RDC - Cox Communi
 16509         2615       5904    1081  AMAZON-02 - Amazon.com, Inc., US
 16625         2398       1316    1813  AKAMAI-AS - Akamai Technologies, Inc., 
 30036         2164        356     121  MEDIACOM-ENTERPRISE-BUSINESS - Mediacom
 20115         2149       2751     527  CHARTER-20115 - Charter Communications,
 18566         2109        405     108  MEGAPATH5-US - MegaPath Corporation, US
  5650         2086       3074    1462  FRONTIER-FRTR - Frontier Communications
   209         2040       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         5444       1629     140  UNI2-AS, ES
 39891         3778        203      20  ALJAWWALSTC-AS, SA
  8551         3245        378      44  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 20940         2639        534    1913  AKAMAI-ASN1, US
 12389         2227       2221     636  ROSTELECOM-AS, RU
 34984         2083        342     537  TELLCOM-AS, TR
  9121         1671       1693      19  TTNET, TR
 13188         1602        100      47  TRIOLAN, UA
  9009         1416        148     771  M247, GB
  8402         1254        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         5676       3339     593  Uninet S.A. de C.V., MX
 10620         3436        537     388  Telmex Colombia S.A., CO
 11830         2708        384      34  Instituto Costarricense de Electricidad
  7303         1461       1000     252  Telecom Argentina S.A., AR
 28573         1367       2249     191  CLARO S.A., BR
  6503         1299        433      53  Axtel, S.A.B. de C.V., MX
  6147         1259        374      25  Telefonica del Peru S.A.A., PE
  3816         1041        507     128  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
 13999          959        521     247  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         1205        393      21  LINKdotNET-AS, EG
 37611          894        107       9  Afrihost, ZA
 24835          884        646      21  RAYA-AS, EG
 36903          827        416     126  MT-MPLS, MA
 36992          819       1531      71  ETISALAT-MISR, EG
  8452          709       1731      19  TE-AS TE-AS, EG
 29571          495         70      12  ORANGE-COTE-IVOIRE, CI
 37492          470        470      57  ORANGE-, TN
 15706          421         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         5676       3339     593  Uninet S.A. de C.V., MX
 12479         5444       1629     140  UNI2-AS, ES
  7545         4715        545     547  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538         4468       4192      74  ERX-CERNET-BKB China Education and Rese
 39891         3778        203      20  ALJAWWALSTC-AS, SA
 11492         3644        238     589  CABLEONE - CABLE ONE, INC., US
  6327         3616       1325      94  SHAW - Shaw Communications Inc., CA
 10620         3436        537     388  Telmex Colombia S.A., CO
 22773         3392       2976     161  ASN-CXA-ALL-CCI-22773-RDC - Cox Communi
  8551         3245        378      44  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       5444         5304   UNI2-AS, ES
  4538       4468         4394   ERX-CERNET-BKB China Education and Research Net
  7545       4715         4168   TPG-INTERNET-AP TPG Telecom Limited, AU
 39891       3778         3758   ALJAWWALSTC-AS, SA
  6327       3616         3522   SHAW - Shaw Communications Inc., CA
 22773       3392         3231   ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 
  8551       3245         3201   BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  7552       3136         3083   VIETEL-AS-AP Viettel Group, VN
 11492       3644         3055   CABLEONE - CABLE ONE, INC., US
 10620       3436         3048   Telmex Colombia S.A., CO

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
  65553   UNALLOCATED  103.132.227.0/24    138556       ARMOUR-AS-AP Armour Technologi
  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
  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&

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
43.255.82.0/24       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      /10:37      /11:100     /12:291     
/13:568     /14:1135    /15:1905    /16:13353   /17:7972    /18:13881   
/19:25629   /20:39916   /21:46161   /22:93255   /23:75822   /24:424200  
/25:1066    /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     4358          5444    UNI2-AS, ES
  6327     3390          3616    SHAW - Shaw Communications Inc., CA
 39891     2946          3778    ALJAWWALSTC-AS, SA
 11492     2851          3644    CABLEONE - CABLE ONE, INC., US
  8551     2699          3245    BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 22773     2631          3392    ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 
 11830     2053          2708    Instituto Costarricense de Electricidad y Telec
 18566     2004          2109    MEGAPATH5-US - MegaPath Corporation, US
 30036     1911          2164    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)
----------------------------------------------

   1:1600      2:967       4:21        5:3085      6:45        7:1      
   8:1285      9:1        12:1805     13:328      14:1987     15:36     
  16:4        17:244      18:58       20:50       23:2666     24:2499   
  25:2        27:2483     31:1973     32:97       35:36       36:847    
  37:3051     38:1720     39:292      40:121      41:3279     42:767    
  43:2024     44:151      45:7175     46:3220     47:258      49:1351   
  50:1106     51:322      52:1016     54:285      55:693      56:6      
  57:42       58:1780     59:1070     60:507      61:2124     62:2124   
  63:1818     64:4967     65:2223     66:4836     67:2722     68:1169   
  69:3525     70:1324     71:605      72:2459     74:2754     75:515    
  76:543      77:1760     78:1806     79:2281     80:1804     81:1509   
  82:1134     83:905      84:1124     85:2297     86:514      87:1535   
  88:1053     89:2596     90:220      91:6566     92:1370     93:2442   
  94:2528     95:3254     96:928      97:343      98:951      99:377    
 100:87      101:1158    102:543     103:20923   104:3536    105:253    
 106:796     107:1784    108:690     109:3718    110:1652    111:1849   
 112:1484    113:1394    114:1143    115:1720    116:1734    117:1904   
 118:2175    119:1627    120:1008    121:1041    122:2348    123:1641   
 124:1471    125:1979    128:1267    129:829     130:538     131:1810   
 132:788     133:219     134:1087    135:242     136:566     137:718    
 138:2041    139:841     140:639     141:871     142:798     143:1046   
 144:862     145:494     146:1265    147:832     148:1723    149:801    
 150:787     151:1012    152:1054    153:335     154:2819    155:914    
 156:1622    157:948     158:640     159:1940    160:1571    161:906    
 162:2750    163:809     164:1194    165:1569    166:448     167:1393   
 168:3292    169:869     170:4103    171:574     172:1140    173:2213   
 174:1040    175:914     176:2327    177:4193    178:2522    179:1450   
 180:2179    181:2409    182:2668    183:1083    184:1441    185:14946  
 186:3652    187:2470    188:2899    189:1968    190:8301    191:1544   
 192:10047   193:6657    194:5411    195:4103    196:3092    197:1765   
 198:5909    199:6004    200:7190    201:5112    202:10392   203:10115  
 204:4539    205:3028    206:3223    207:3243    208:3963    209:4246   
 210:3936    211:1992    212:3156    213:2938    214:1099    215:54     
 216:5933    217:2214    218:881     219:581     220:1861    221:968    
 222:980     223:1364   

End of report


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