[SANOG] Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri May 10 18:03:19 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 11 May, 2019

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

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

BGP routing table entries examined:                              753151
    Prefixes after maximum aggregation (per Origin AS):          288263
    Deaggregation factor:                                          2.61
    Unique aggregates announced (without unneeded subnets):      360475
Total ASes present in the Internet Routing Table:                 64188
    Prefixes per ASN:                                             11.73
Origin-only ASes present in the Internet Routing Table:           55224
Origin ASes announcing only one prefix:                           23795
Transit ASes present in the Internet Routing Table:                8964
Transit-only ASes present in the Internet Routing Table:            270
Average AS path length visible in the Internet Routing Table:       4.4
    Max AS path length visible:                                      34
    Max AS path prepend of ASN (  8697)                              27
Prefixes from unregistered ASNs in the Routing Table:                24
    Number of instances of unregistered ASNs:                        28
Number of 32-bit ASNs allocated by the RIRs:                      26896
Number of 32-bit ASNs visible in the Routing Table:               22003
Prefixes from 32-bit ASNs in the Routing Table:                   97673
Number of bogon 32-bit ASNs visible in the Routing Table:            21
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            259
Number of addresses announced to Internet:                   2850178944
    Equivalent to 169 /8s, 226 /16s and 71 /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:      252122

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

Prefixes being announced by APNIC Region ASes:                   203409
    Total APNIC prefixes after maximum aggregation:               59122
    APNIC Deaggregation factor:                                    3.44
Prefixes being announced from the APNIC address blocks:          199716
    Unique aggregates announced from the APNIC address blocks:    82255
APNIC Region origin ASes present in the Internet Routing Table:    9722
    APNIC Prefixes per ASN:                                       20.54
APNIC Region origin ASes announcing only one prefix:               2722
APNIC Region transit ASes present in the Internet Routing Table:   1448
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:   4726
Number of APNIC addresses announced to Internet:              773680000
    Equivalent to 46 /8s, 29 /16s and 107 /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:                    224174
    Total ARIN prefixes after maximum aggregation:               104803
    ARIN Deaggregation factor:                                     2.14
Prefixes being announced from the ARIN address blocks:           223364
    Unique aggregates announced from the ARIN address blocks:    105536
ARIN Region origin ASes present in the Internet Routing Table:    18471
    ARIN Prefixes per ASN:                                        12.09
ARIN Region origin ASes announcing only one prefix:                6857
ARIN Region transit ASes present in the Internet Routing Table:    1899
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:    2701
Number of ARIN addresses announced to Internet:              1077912448
    Equivalent to 64 /8s, 63 /16s and 163 /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:                    207169
    Total RIPE prefixes after maximum aggregation:                98242
    RIPE Deaggregation factor:                                     2.11
Prefixes being announced from the RIPE address blocks:           203505
    Unique aggregates announced from the RIPE address blocks:    120752
RIPE Region origin ASes present in the Internet Routing Table:    26052
    RIPE Prefixes per ASN:                                         7.81
RIPE Region origin ASes announcing only one prefix:               11566
RIPE Region transit ASes present in the Internet Routing Table:    3718
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:    8100
Number of RIPE addresses announced to Internet:               719259008
    Equivalent to 42 /8s, 223 /16s and 5 /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:                   96963
    Total LACNIC prefixes after maximum aggregation:              21780
    LACNIC Deaggregation factor:                                   4.45
Prefixes being announced from the LACNIC address blocks:          98376
    Unique aggregates announced from the LACNIC address blocks:   42592
LACNIC Region origin ASes present in the Internet Routing Table:   8385
    LACNIC Prefixes per ASN:                                      11.73
LACNIC Region origin ASes announcing only one prefix:              2216
LACNIC Region transit ASes present in the Internet Routing Table:  1540
Average LACNIC Region AS path length visible:                       5.1
    Max LACNIC Region AS path length visible:                        31
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  5924
Number of LACNIC addresses announced to Internet:             173985536
    Equivalent to 10 /8s, 94 /16s and 207 /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:                  21411
    Total AfriNIC prefixes after maximum aggregation:              4297
    AfriNIC Deaggregation factor:                                  4.98
Prefixes being announced from the AfriNIC address blocks:         27931
    Unique aggregates announced from the AfriNIC address blocks:   9104
AfriNIC Region origin ASes present in the Internet Routing Table:  1272
    AfriNIC Prefixes per ASN:                                     21.96
AfriNIC Region origin ASes announcing only one prefix:              434
AfriNIC Region transit ASes present in the Internet Routing Table:  244
Average AfriNIC Region AS path length visible:                      5.0
    Max AfriNIC Region AS path length visible:                       22
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:  552
Number of AfriNIC addresses announced to Internet:            104790272
    Equivalent to 6 /8s, 62 /16s and 249 /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         4740        546     553  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538         3197       4192      74  ERX-CERNET-BKB China Education and Rese
  7552         3159       1443      27  VIETEL-AS-AP Viettel Group, VN
 45899         3032       1741     111  VNPT-AS-VN VNPT Corp, VN
  9808         2938       9043      62  CMNET-GD Guangdong Mobile Communication
  9829         2734       1496     551  BSNL-NIB National Internet Backbone, IN
  4766         2543      11120     760  KIXS-AS-KR Korea Telecom, KR
  9394         2155       4882      26  CTTNET China TieTong Telecommunications
  4755         2138        429     184  TATACOMM-AS TATA Communications formerl
  9498         2052        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
  6327         3656       1325      93  SHAW - Shaw Communications Inc., CA
 11492         3651        238     584  CABLEONE - CABLE ONE, INC., US
  7155         3566        280      25  VIASAT-SP-BACKBONE - ViaSat,Inc., US
 22773         3399       2974     157  ASN-CXA-ALL-CCI-22773-RDC - Cox Communi
 16509         2606       5529    1153  AMAZON-02 - Amazon.com, Inc., US
 16625         2432       1330    1843  AKAMAI-AS - Akamai Technologies, Inc., 
 30036         2160        350     176  MEDIACOM-ENTERPRISE-BUSINESS - Mediacom
 20115         2146       2747     527  CHARTER-20115 - Charter Communications,
 18566         2101        405     108  MEGAPATH5-US - MegaPath Corporation, US
  5650         2086       3074    1462  FRONTIER-FRTR - Frontier Communications

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       1629     140  UNI2-AS, ES
 39891         3778        203      20  ALJAWWALSTC-AS, SA
  8551         3219        378      45  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 20940         2670        530    1926  AKAMAI-ASN1, US
 12389         2243       2222     642  ROSTELECOM-AS, RU
 34984         2078        343     541  TELLCOM-AS, TR
  9121         1668       1692      18  TTNET, TR
 13188         1601        100      47  TRIOLAN, UA
  9009         1451        151     787  M247, GB
  8402         1230        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         5754       3359     592  Uninet S.A. de C.V., MX
 10620         3424        534     418  Telmex Colombia S.A., CO
 11830         2708        384      34  Instituto Costarricense de Electricidad
  7303         1474       1015     248  Telecom Argentina S.A., AR
 28573         1358       2238     198  CLARO S.A., BR
  6503         1263        433      53  Axtel, S.A.B. de C.V., MX
  6147         1200        377      30  Telefonica del Peru S.A.A., PE
  3816         1086        523     143  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
 13999          968        512     241  Mega Cable, S.A. de C.V., MX
 11172          938        144      62  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         1175        393      21  LINKdotNET-AS, EG
 37611          906        107       9  Afrihost, ZA
 24835          888        648      21  RAYA-AS, EG
 36992          836       1536      69  ETISALAT-MISR, EG
 36903          827        416     126  MT-MPLS, MA
  8452          684       1731      19  TE-AS TE-AS, EG
 29571          511         68      11  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         5754       3359     592  Uninet S.A. de C.V., MX
 12479         5430       1629     140  UNI2-AS, ES
  7545         4740        546     553  TPG-INTERNET-AP TPG Telecom Limited, AU
 39891         3778        203      20  ALJAWWALSTC-AS, SA
  6327         3656       1325      93  SHAW - Shaw Communications Inc., CA
 11492         3651        238     584  CABLEONE - CABLE ONE, INC., US
  7155         3566        280      25  VIASAT-SP-BACKBONE - ViaSat,Inc., US
 10620         3424        534     418  Telmex Colombia S.A., CO
 22773         3399       2974     157  ASN-CXA-ALL-CCI-22773-RDC - Cox Communi
  8551         3219        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         5290   UNI2-AS, ES
  7545       4740         4187   TPG-INTERNET-AP TPG Telecom Limited, AU
 39891       3778         3758   ALJAWWALSTC-AS, SA
  6327       3656         3563   SHAW - Shaw Communications Inc., CA
  7155       3566         3541   VIASAT-SP-BACKBONE - ViaSat,Inc., US
 22773       3399         3242   ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 
  8551       3219         3174   BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  7552       3159         3132   VIETEL-AS-AP Viettel Group, VN
  4538       3197         3123   ERX-CERNET-BKB China Education and Research Net
 11492       3651         3067   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
  65549   DOCUMENT     117.239.163.0/24     65544       UNKNOWN
  64339   UNALLOCATED  143.0.108.0/22       18747       IFX18747 - IFX Corporation, US
  65551   DOCUMENT     149.165.246.0/24     19782       INDIANAGIGAPOP - Indiana Unive
  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
23.247.128.0/17      53889    MICFO - Micfo, LLC., US
23.247.197.0/24      53889    MICFO - Micfo, LLC., US
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

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     /12:295     
/13:571     /14:1131    /15:1911    /16:13328   /17:8004    /18:13977   
/19:25784   /20:40294   /21:46929   /22:93824   /23:76497   /24:429533  
/25:914     /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     4362          5430    UNI2-AS, ES
  6327     3431          3656    SHAW - Shaw Communications Inc., CA
 39891     2946          3778    ALJAWWALSTC-AS, SA
  7155     2930          3566    VIASAT-SP-BACKBONE - ViaSat,Inc., US
 11492     2858          3651    CABLEONE - CABLE ONE, INC., US
  8551     2673          3219    BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 22773     2638          3399    ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 
 11830     2053          2708    Instituto Costarricense de Electricidad y Telec
 18566     1996          2101    MEGAPATH5-US - MegaPath Corporation, US
 30036     1910          2160    MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communi

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

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

   1:1599      2:1018      3:6         4:21        5:3161      6:47     
   7:1         8:1303      9:1        12:1802     13:340      14:1996   
  15:37       16:4        17:262      18:58       20:52       23:2696   
  24:2501     25:2        27:2454     31:1974     32:100      35:36     
  36:858      37:3025     38:1738     39:293      40:122      41:3286   
  42:780      43:2038     44:149      45:7712     46:3284     47:257    
  49:1364     50:1106     51:322      52:1012     54:282      55:704    
  56:6        57:44       58:1734     59:1060     60:502      61:2177   
  62:2188     63:1827     64:4966     65:2202     66:4827     67:2775   
  68:1161     69:3536     70:1360     71:625      72:2623     74:2746   
  75:1257     76:556      77:1781     78:1817     79:2281     80:1809   
  81:1504     82:1126     83:953      84:1132     85:2288     86:524    
  87:1550     88:1051     89:2650     90:217      91:6565     92:1395   
  93:2493     94:2513     95:3264     96:944      97:344      98:958    
  99:751     100:87      101:1159    102:567     103:21154   104:3561   
 105:257     106:782     107:1786    108:695     109:3747    110:1661   
 111:2055    112:1503    113:1405    114:1233    115:1712    116:1748   
 117:1909    118:2102    119:1627    120:1025    121:1043    122:2360   
 123:1710    124:1495    125:1949    128:1253    129:831     130:538    
 131:1822    132:787     133:222     134:1094    135:241     136:571    
 137:761     138:2060    139:877     140:645     141:882     142:795    
 143:1055    144:891     145:496     146:1266    147:838     148:1705   
 149:912     150:791     151:1020    152:1063    153:333     154:3012   
 155:919     156:1638    157:989     158:658     159:1951    160:1605   
 161:924     162:2756    163:814     164:1201    165:1590    166:431    
 167:1415    168:3334    169:874     170:4124    171:577     172:1575   
 173:2203    174:1044    175:927     176:2320    177:4224    178:2535   
 179:1395    180:2093    181:2421    182:2689    183:1113    184:2054   
 185:15139   186:3705    187:2487    188:2918    189:1973    190:8229   
 191:1599    192:10062   193:6663    194:5449    195:4119    196:3099   
 197:1791    198:5920    199:5987    200:7149    201:5123    202:10449  
 203:10089   204:4551    205:3037    206:3240    207:3240    208:3946   
 209:4239    210:3931    211:2020    212:3103    213:2950    214:1085   
 215:55      216:5926    217:2220    218:877     219:596     220:1862   
 221:968     222:989     223:1377   

End of report


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