[safnog] Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Jan 29 18:03:44 UTC 2021


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 30 Jan, 2021

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

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

BGP routing table entries examined:                              841044
    Prefixes after maximum aggregation (per Origin AS):          321740
    Deaggregation factor:                                          2.61
    Unique aggregates announced (without unneeded subnets):      401597
Total ASes present in the Internet Routing Table:                 70404
    Prefixes per ASN:                                             11.95
Origin-only ASes present in the Internet Routing Table:           60529
Origin ASes announcing only one prefix:                           25033
Transit ASes present in the Internet Routing Table:                9875
Transit-only ASes present in the Internet Routing Table:            309
Average AS path length visible in the Internet Routing Table:       4.4
    Max AS path length visible:                                      33
    Max AS path prepend of ASN ( 45582)                              27
Prefixes from unregistered ASNs in the Routing Table:               880
    Number of instances of unregistered ASNs:                       882
Number of 32-bit ASNs allocated by the RIRs:                      34869
Number of 32-bit ASNs visible in the Routing Table:               28943
Prefixes from 32-bit ASNs in the Routing Table:                  134969
Number of bogon 32-bit ASNs visible in the Routing Table:            14
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            728
Number of addresses announced to Internet:                   2919079808
    Equivalent to 173 /8s, 253 /16s and 159 /24s
    Percentage of available address space announced:               78.8
    Percentage of allocated address space announced:               78.8
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               99.5
Total number of prefixes smaller than registry allocations:      285501

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

Prefixes being announced by APNIC Region ASes:                   221165
    Total APNIC prefixes after maximum aggregation:               65381
    APNIC Deaggregation factor:                                    3.38
Prefixes being announced from the APNIC address blocks:          216975
    Unique aggregates announced from the APNIC address blocks:    88079
APNIC Region origin ASes present in the Internet Routing Table:   11239
    APNIC Prefixes per ASN:                                       19.31
APNIC Region origin ASes announcing only one prefix:               3213
APNIC Region transit ASes present in the Internet Routing Table:   1604
Average APNIC Region AS path length visible:                        4.6
    Max APNIC Region AS path length visible:                         30
Number of APNIC region 32-bit ASNs visible in the Routing Table:   6377
Number of APNIC addresses announced to Internet:              778701568
    Equivalent to 46 /8s, 106 /16s and 11 /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, 131072-143673
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:                    243040
    Total ARIN prefixes after maximum aggregation:               112030
    ARIN Deaggregation factor:                                     2.17
Prefixes being announced from the ARIN address blocks:           243557
    Unique aggregates announced from the ARIN address blocks:    116174
ARIN Region origin ASes present in the Internet Routing Table:    18696
    ARIN Prefixes per ASN:                                        13.03
ARIN Region origin ASes announcing only one prefix:                6801
ARIN Region transit ASes present in the Internet Routing Table:    1917
Average ARIN Region AS path length visible:                         3.9
    Max ARIN Region AS path length visible:                          25
Number of ARIN region 32-bit ASNs visible in the Routing Table:    3680
Number of ARIN addresses announced to Internet:              1148203008
    Equivalent to 68 /8s, 112 /16s and 48 /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, 393216-401308
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,  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:                    238694
    Total RIPE prefixes after maximum aggregation:               112388
    RIPE Deaggregation factor:                                     2.12
Prefixes being announced from the RIPE address blocks:           234613
    Unique aggregates announced from the RIPE address blocks:    138457
RIPE Region origin ASes present in the Internet Routing Table:    27675
    RIPE Prefixes per ASN:                                         8.48
RIPE Region origin ASes announcing only one prefix:               11908
RIPE Region transit ASes present in the Internet Routing Table:    3893
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:    9876
Number of RIPE addresses announced to Internet:               709702528
    Equivalent to 42 /8s, 77 /16s and 51 /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
                       196608-213403
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:                  112294
    Total LACNIC prefixes after maximum aggregation:              26328
    LACNIC Deaggregation factor:                                   4.27
Prefixes being announced from the LACNIC address blocks:         113432
    Unique aggregates announced from the LACNIC address blocks:   48160
LACNIC Region origin ASes present in the Internet Routing Table:  10645
    LACNIC Prefixes per ASN:                                      10.66
LACNIC Region origin ASes announcing only one prefix:              2614
LACNIC Region transit ASes present in the Internet Routing Table:  2010
Average LACNIC Region AS path length visible:                       4.9
    Max LACNIC Region AS path length visible:                        33
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8245
Number of LACNIC addresses announced to Internet:             174122752
    Equivalent to 10 /8s, 96 /16s and 231 /24s
LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       61440-61951, 64099-64197, 262144-272796 + 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:                  24969
    Total AfriNIC prefixes after maximum aggregation:              4898
    AfriNIC Deaggregation factor:                                  5.10
Prefixes being announced from the AfriNIC address blocks:         31739
    Unique aggregates announced from the AfriNIC address blocks:  10059
AfriNIC Region origin ASes present in the Internet Routing Table:  1442
    AfriNIC Prefixes per ASN:                                     22.01
AfriNIC Region origin ASes announcing only one prefix:              496
AfriNIC Region transit ASes present in the Internet Routing Table:  287
Average AfriNIC Region AS path length visible:                      5.2
    Max AfriNIC Region AS path length visible:                       28
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:  765
Number of AfriNIC addresses announced to Internet:            107832320
    Equivalent to 6 /8s, 109 /16s and 100 /24s
AfriNIC AS Blocks      36864-37887, 327680-329727 & ERX transfers
AfriNIC Address Blocks  41/8,  45/8, 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        5714        777     660  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4744       4192      74  ERX-CERNET-BKB China Education and Rese
  7552        3559       1330      19  VIETEL-AS-AP Viettel Group, VN
  7713        3222        935     524  TELKOMNET-AS-AP PT Telekomunikasi Indon
  9808        3000       9044      57  CMNET-GD Guangdong Mobile Communication
 45899        2876       1896      55  VNPT-AS-VN VNPT Corp, VN
  4766        2452      11105     570  KIXS-AS-KR Korea Telecom, KR
  9498        2305        482     231  BBIL-AP BHARTI Airtel Ltd., IN
  4755        2136        441     190  TATACOMM-AS TATA Communications formerl
 45090        2075       1045      64  CNNIC-TENCENT-NET-AP Shenzhen Tencent C

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        4773        317     714  CABLEONE, US
 16509        4738       9086    2159  AMAZON-02, US
  7155        4036        264      32  VIASAT-SP-BACKBONE, US
 22773        3814       2994     222  ASN-CXA-ALL-CCI-22773-RDC, US
  6327        3330       1317      72  SHAW, CA
 16625        3258       1704    2325  AKAMAI-AS, US
   209        2519       5058     505  CENTURYLINK-US-LEGACY-QWEST, US
 30036        2499        369     134  MEDIACOM-ENTERPRISE-BUSINESS, US
  5650        2355       3000    1642  FRONTIER-FRTR, US
  5972        2181        437     779  DNIC-ASBLK-05800-06055, US

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        6260       1700     146  UNI2-AS, ES
 47331        6031        823    3574  TTNET, TR
 39891        3459        195      22  ALJAWWALSTC-AS, SA
 20940        3359       3359     189  AKAMAI-ASN1, NL
  8551        3198        379      45  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2872       2282     890  ROSTELECOM-AS, RU
  9009        2309        234    1246  M247, GB
 34984        2175        354     578  TELLCOM-AS, TR
 13188        1611        100      23  TRIOLAN, UA
 58224        1504        869     549  TCI, IR

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        8180       3403     592  Uninet S.A. de C.V., MX
 10620        3403        526     602  Telmex Colombia S.A., CO
 11830        2564        369      63  Instituto Costarricense de Electricidad
 13999        1623        433     417  Mega Cable, S.A. de C.V., MX
  6503        1437        311     475  Axtel, S.A.B. de C.V., MX
  7303        1428        907     261  Telecom Argentina S.A., AR
 28573        1372       2259     219  CLARO S.A., BR
  6147        1149        379      39  Telefonica del Peru S.A.A., PE
  3816        1141        559     142  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
 11664         994        211     412  Techtel LMDS Comunicaciones Interactiva

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        1578        393      21  LINKdotNET-AS, EG
 24835        1292        480      28  RAYA-AS, EG
 36992        1184       1537     169  ETISALAT-MISR, EG
 36903         978        510     101  MT-MPLS, MA
 29571         703         68      11  ORANGE-COTE-IVOIRE, CI
  6713         533       1863      34  IAM-AS, MA
 37342         486         32       1  MOVITEL, MZ
 36935         478        522      40  Vodafone-, EG
 23889         454        232      16  MauritiusTelecom, MU
 15399         440         46      16  WANANCHI-, KE

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        8180       3403     592  Uninet S.A. de C.V., MX
 12479        6260       1700     146  UNI2-AS, ES
 47331        6031        823    3574  TTNET, TR
  7545        5714        777     660  TPG-INTERNET-AP TPG Telecom Limited, AU
 11492        4773        317     714  CABLEONE, US
  4538        4744       4192      74  ERX-CERNET-BKB China Education and Rese
 16509        4738       9086    2159  AMAZON-02, US
  7155        4036        264      32  VIASAT-SP-BACKBONE, US
 22773        3814       2994     222  ASN-CXA-ALL-CCI-22773-RDC, US
  7552        3559       1330      19  VIETEL-AS-AP Viettel Group, VN

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

Global Per AS Maximum Aggregation summary
-----------------------------------------

   ASN  No of nets  Net Savings  Description
 12479        6260         6114  UNI2-AS, ES
  7545        5714         5054  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4744         4670  ERX-CERNET-BKB China Education and Research Net
 11492        4773         4059  CABLEONE, US
  7155        4036         4004  VIASAT-SP-BACKBONE, US
 22773        3814         3592  ASN-CXA-ALL-CCI-22773-RDC, US
  7552        3559         3540  VIETEL-AS-AP Viettel Group, VN
 39891        3459         3437  ALJAWWALSTC-AS, SA
  6327        3330         3258  SHAW, CA
 20940        3359         3170  AKAMAI-ASN1, NL

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

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

    Bad AS  Designation  Net Originated      Transit AS  Transit AS Name
     62828  UNALLOCATED  8.21.130.0/24             3356  LEVEL3, US
    393266  UNALLOCATED  8.23.52.0/24               174  COGENT-174, US
     18604  UNALLOCATED  8.25.204.0/24             3356  LEVEL3, US
     32985  UNALLOCATED  8.28.31.0/24              3356  LEVEL3, US
    394936  UNALLOCATED  8.33.224.0/24              174  COGENT-174, US
     23061  UNALLOCATED  8.39.119.0/24             3356  LEVEL3, US
    395438  UNALLOCATED  8.42.206.0/24             3356  LEVEL3, US
     46766  UNALLOCATED  8.44.208.0/24             3356  LEVEL3, US
     40544  UNALLOCATED  12.0.33.0/24              6461  ZAYO-6461, US
    393489  UNALLOCATED  12.7.109.0/24             7018  ATT-INTERNET4, US

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

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

Prefix                Origin AS  Description
192.88.99.0/24             6939  HURRICANE, US

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

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

Unassigned Network     ASN Information  AS Name
23.141.0.0/24        Origin:    395350  UNASSIGNED
                    Transit:     11426  TWC-11426-CAROLINAS, US
23.142.80.0/24       Origin:    397881  STINGERS, US
                    Transit:    398481  REDMERCURY, US
23.226.240.0/20      Origin:     40430  UNASSIGNED
                    Transit:       174  COGENT-174, US
27.100.7.0/24        Origin:     56096  UNASSIGNED
                    Transit:     45455  TH-2S1N-AP Two S One N Co Ltd, Internet 
27.126.156.0/22      Origin:     55827  UNASSIGNED
                    Transit:      9930  TTNET-MY TIME dotCom Berhad No. 14, Jala

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        /8:11       /9:13      /10:40      /11:102     /12:293     
/13:581     /14:1183    /15:1925    /16:13484   /17:8292    /18:13787   
/19:25671   /20:41569   /21:50681   /22:104550  /23:88945   /24:488425  
/25:1492    /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
 47331        5353        6031  TTNET, TR
 12479        5227        6260  UNI2-AS, ES
 11492        3829        4773  CABLEONE, US
  6327        3135        3330  SHAW, CA
  7155        3124        4036  VIASAT-SP-BACKBONE, US
 22773        2900        3814  ASN-CXA-ALL-CCI-22773-RDC, US
 39891        2801        3459  ALJAWWALSTC-AS, SA
  8151        2788        8180  Uninet S.A. de C.V., MX
  8551        2659        3198  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 30036        2224        2499  MEDIACOM-ENTERPRISE-BUSINESS, US

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

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

   1:1877      2:1189      3:85        4:19        5:3581      6:65     
   7:5         8:1484      9:1        11:36       12:1753     13:349    
  14:2457     15:75       16:15       17:313      18:94       20:114    
  22:188      23:4253     24:2362     25:3        27:2351     31:2188   
  32:112      34:2        35:38       36:1145     37:3603     38:2039   
  39:485      40:150      41:3896     42:899      43:2105     44:228    
  45:14830    46:3653     47:320      49:1604     50:1696     51:97     
  52:1172     54:218      55:778      56:6        57:57       58:1804   
  59:1153     60:823      61:2367     62:2216     63:1986     64:5236   
  65:2388     66:5132     67:2937     68:1169     69:4088     70:1397   
  71:687      72:3074     74:2583     75:1472     76:694      77:2015   
  78:3191     79:2457     80:1799     81:1603     82:1272     83:1106   
  84:1249     85:3085     86:615      87:1798     88:2343     89:2889   
  90:386      91:7246     92:1606     93:2545     94:2924     95:4164   
  96:1230     97:343      98:977      99:978     100:91      101:1039   
 102:1272    103:25267   104:3655    105:417     106:729     107:2200   
 108:677     109:3815    110:1995    111:2370    112:1747    113:1682   
 114:1424    115:1865    116:1894    117:2193    118:2306    119:1916   
 120:950     121:1078    122:2312    123:2157    124:1652    125:2162   
 128:1322    129:1174    130:798     131:2019    132:761     133:319    
 134:1555    135:287     136:711     137:900     138:2287    139:1163   
 140:740     141:1161    142:1054    143:1243    144:1221    145:340    
 146:1390    147:1211    148:2208    149:1254    150:752     151:1199   
 152:1549    153:453     154:2139    155:1225    156:1395    157:1161   
 158:922     159:2050    160:2057    161:1086    162:3232    163:982    
 164:1421    165:1299    166:601     167:1763    168:3583    169:642    
 170:4372    171:766     172:2058    173:2942    174:977     175:1066   
 176:2943    177:4388    178:2857    179:1866    180:2270    181:2594   
 182:3167    183:1623    184:2455    185:17791   186:4130    187:3058   
 188:3274    189:2720    190:9106    191:1377    192:10646   193:7905   
 194:6463    195:4611    196:3081    197:2309    198:6028    199:5982   
 200:7362    201:5277    202:10524   203:10091   204:4643    205:3272   
 206:3437    207:3348    208:4003    209:4605    210:4220    211:2169   
 212:3599    213:3285    214:1199    215:61      216:6154    217:2505   
 218:955     219:672     220:2072    221:929     222:983     223:1724   


End of report



More information about the safnog mailing list