[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Jul 22 18:02:48 UTC 2022


This is an automated weekly mailing describing the state of the Global
IPv4 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 https://thyme.apnic.net.

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

IPv4 Routing Table Report   04:00 +10GMT Sat 23 Jul, 2022

  BGP Table (Global) as seen in Japan.

Report Website:     https://thyme.apnic.net
Detailed Analysis:  https://thyme.apnic.net/current/

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

BGP routing table entries examined:                              904523
    Prefixes after maximum aggregation (per Origin AS):          340800
    Deaggregation factor:                                          2.65
    Unique aggregates announced (without unneeded subnets):      436913
Total ASes present in the Internet Routing Table:                 73449
    Prefixes per ASN:                                             12.31
Origin-only ASes present in the Internet Routing Table:           63038
Origin ASes announcing only one prefix:                           25918
Transit ASes present in the Internet Routing Table:               10411
Transit-only ASes present in the Internet Routing Table:            392
Average AS path length visible in the Internet Routing Table:       4.3
    Max AS path length visible:                                      55
    Max AS path prepend of ASN (265020)                              50
Prefixes from unregistered ASNs in the Routing Table:               980
    Number of instances of unregistered ASNs:                       985
Number of 32-bit ASNs allocated by the RIRs:                      39846
Number of 32-bit ASNs visible in the Routing Table:               33050
Prefixes from 32-bit ASNs in the Routing Table:                  157447
Number of bogon 32-bit ASNs visible in the Routing Table:            24
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            503
Number of addresses announced to Internet:                   3068267136
    Equivalent to 182 /8s, 226 /16s and 10 /24s
    Percentage of available address space announced:               82.9
    Percentage of allocated address space announced:               82.9
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               99.6
Total number of prefixes smaller than registry allocations:      307212

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

Prefixes being announced by APNIC Region ASes:                   236057
    Total APNIC prefixes after maximum aggregation:               67078
    APNIC Deaggregation factor:                                    3.52
Prefixes being announced from the APNIC address blocks:          231112
    Unique aggregates announced from the APNIC address blocks:    95728
APNIC Region origin ASes present in the Internet Routing Table:   12801
    APNIC Prefixes per ASN:                                       18.05
APNIC Region origin ASes announcing only one prefix:               3692
APNIC Region transit ASes present in the Internet Routing Table:   1750
Average APNIC Region AS path length visible:                        4.7
    Max APNIC Region AS path length visible:                         24
Number of APNIC region 32-bit ASNs visible in the Routing Table:   8023
Number of APNIC addresses announced to Internet:              773114368
    Equivalent to 46 /8s, 20 /16s and 202 /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, 131072-151865
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:                    264035
    Total ARIN prefixes after maximum aggregation:               120828
    ARIN Deaggregation factor:                                     2.19
Prefixes being announced from the ARIN address blocks:           264351
    Unique aggregates announced from the ARIN address blocks:    127253
ARIN Region origin ASes present in the Internet Routing Table:    19057
    ARIN Prefixes per ASN:                                        13.87
ARIN Region origin ASes announcing only one prefix:                6922
ARIN Region transit ASes present in the Internet Routing Table:    1930
Average ARIN Region AS path length visible:                         3.8
    Max ARIN Region AS path length visible:                          35
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4573
Number of ARIN addresses announced to Internet:              1296011520
    Equivalent to 77 /8s, 63 /16s and 145 /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:                    259590
    Total RIPE prefixes after maximum aggregation:               118910
    RIPE Deaggregation factor:                                     2.18
Prefixes being announced from the RIPE address blocks:           256982
    Unique aggregates announced from the RIPE address blocks:    152841
RIPE Region origin ASes present in the Internet Routing Table:    28167
    RIPE Prefixes per ASN:                                         9.12
RIPE Region origin ASes announcing only one prefix:               12076
RIPE Region transit ASes present in the Internet Routing Table:    3987
Average RIPE Region AS path length visible:                         4.3
    Max RIPE Region AS path length visible:                          35
Number of RIPE region 32-bit ASNs visible in the Routing Table:   10758
Number of RIPE addresses announced to Internet:               714714240
    Equivalent to 42 /8s, 153 /16s and 172 /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:                  115787
    Total LACNIC prefixes after maximum aggregation:              27728
    LACNIC Deaggregation factor:                                   4.18
Prefixes being announced from the LACNIC address blocks:         115527
    Unique aggregates announced from the LACNIC address blocks:   48829
LACNIC Region origin ASes present in the Internet Routing Table:  10980
    LACNIC Prefixes per ASN:                                      10.52
LACNIC Region origin ASes announcing only one prefix:              2650
LACNIC Region transit ASes present in the Internet Routing Table:  2255
Average LACNIC Region AS path length visible:                       4.9
    Max LACNIC Region AS path length visible:                        55
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8709
Number of LACNIC addresses announced to Internet:             176498688
    Equivalent to 10 /8s, 133 /16s and 40 /24s
LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       61440-61951, 64099-64197, 262144-273820 + 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:                  28074
    Total AfriNIC prefixes after maximum aggregation:              5512
    AfriNIC Deaggregation factor:                                  5.09
Prefixes being announced from the AfriNIC address blocks:         36048
    Unique aggregates announced from the AfriNIC address blocks:  11839
AfriNIC Region origin ASes present in the Internet Routing Table:  1661
    AfriNIC Prefixes per ASN:                                     21.70
AfriNIC Region origin ASes announcing only one prefix:              578
AfriNIC Region transit ASes present in the Internet Routing Table:  322
Average AfriNIC Region AS path length visible:                      5.0
    Max AfriNIC Region AS path length visible:                       34
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:  987
Number of AfriNIC addresses announced to Internet:            107644160
    Equivalent to 6 /8s, 106 /16s and 133 /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
  9808        9043       8883      49  CHINAMOBILE-CN China Mobile Communicati
  7545        5922        785     695  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4711       4192      75  ERX-CERNET-BKB China Education and Rese
  7552        3571       1330      19  VIETEL-AS-AP Viettel Group, VN
  7713        3506       1042      59  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3387       1879      49  VNPT-AS-VN VNPT Corp, VN
  4766        2497      11125     601  KIXS-AS-KR Korea Telecom, KR
  9498        2427        499     238  BBIL-AP BHARTI Airtel Ltd., IN
 45090        2174       1438      79  TENCENT-NET-AP Shenzhen Tencent Compute
 24560        2133        846     411  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
 16509        6739      10384    2695  AMAZON-02, US
 11492        4514        299     657  CABLEONE, US
  7155        3906        265      32  VIASAT-SP-BACKBONE, US
 22773        3833       3068     354  ASN-CXA-ALL-CCI-22773-RDC, US
 16625        3455       1779    2499  AKAMAI-AS, US
  6327        3438       1319      63  SHAW, CA
   749        3016      50733    2274  DNIC-AS-00749, US
 30036        2602        372     276  MEDIACOM-ENTERPRISE-BUSINESS, US
396982        2514       3360     360  GOOGLE-CLOUD-PLATFORM, US
   209        2379       4936     410  CENTURYLINK-US-LEGACY-QWEST, US

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
 12479        6891       1730     144  UNI2-AS, ES
  9121        6676       1692      17  TTNET, TR
 20940        4028       3361     206  AKAMAI-ASN1, NL
 39891        4005        234      45  ALJAWWALSTC-AS, SA
  8551        4004        374      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2944       2290     913  ROSTELECOM-AS, RU
  6849        2754        355      21  UKRTELNET, UA
  9009        2575        254    1335  M247, GB
 34984        2249        358     637  TELLCOM-AS, TR
 47331        2044        322    1565  TTNET, TR

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
  8151       10773       3397     558  Uninet S.A. de C.V., MX
 10620        3482        515     774  Telmex Colombia S.A., CO
 11830        2421        369      64  Instituto Costarricense de Electricidad
 13999        1908        312     506  Mega Cable, S.A. de C.V., MX
 28573        1362       2331     269  Claro NXT Telecomunicacoes Ltda, BR
  6503        1290        338     520  Axtel, S.A.B. de C.V., MX
  3816        1267        693     153  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6147        1084        369      21  Telefonica del Peru S.A.A., PE
 11664         997        179     458  Techtel LMDS Comunicaciones Interactiva
 26615         976       2466      43  TIM SA, BR

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
 24863        1609        393      21  LINKdotNET-AS, EG
 24835        1546        521      31  RAYA-AS, EG
 36992        1320       1519     274  ETISALAT-MISR, EG
 36903        1199        545     114  MT-MPLS, MA
 29571         970         66      47  ORANGE-COTE-IVOIRE, CI
 36935         801        520      42  Vodafone-, EG
  6713         610       1863      34  IAM-AS, MA
 15399         517         52      37  WANANCHI-, KE
 37342         462         32       1  MOVITEL, MZ
 23889         401        232      16  MauritiusTelecom, MU

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
  8151       10773       3397     558  Uninet S.A. de C.V., MX
  9808        9043       8883      49  CHINAMOBILE-CN China Mobile Communicati
 12479        6891       1730     144  UNI2-AS, ES
 16509        6739      10384    2695  AMAZON-02, US
  9121        6676       1692      17  TTNET, TR
  7545        5922        785     695  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4711       4192      75  ERX-CERNET-BKB China Education and Rese
 11492        4514        299     657  CABLEONE, US
 20940        4028       3361     206  AKAMAI-ASN1, NL
 39891        4005        234      45  ALJAWWALSTC-AS, SA

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

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

   ASN  No of nets  Net Savings  Description
  9808        9043         8994  CHINAMOBILE-CN China Mobile Communications Grou
 12479        6891         6747  UNI2-AS, ES
  9121        6676         6659  TTNET, TR
  7545        5922         5227  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4711         4636  ERX-CERNET-BKB China Education and Research Net
 16509        6739         4044  AMAZON-02, US
  8551        4004         3965  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 39891        4005         3960  ALJAWWALSTC-AS, SA
  7155        3906         3874  VIASAT-SP-BACKBONE, US
 11492        4514         3857  CABLEONE, US

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

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

    Bad AS  Designation  Net Originated      Transit AS  Transit AS Name
    398083  UNALLOCATED  5.133.124.0/24          399587  UT, US
     33123  UNALLOCATED  8.10.69.0/24             11168  SCC, US
     53775  UNALLOCATED  8.20.88.0/24              7029  WINDSTREAM, US
     62828  UNALLOCATED  8.21.130.0/24             3356  LEVEL3, US
    393266  UNALLOCATED  8.23.52.0/24             46887  LIGHTOWER, US
     18604  UNALLOCATED  8.25.204.0/24             3356  LEVEL3, US
    394936  UNALLOCATED  8.33.224.0/24            22442  HOU-PHONOSCOPE, US
     54338  UNALLOCATED  8.33.241.0/24             6461  ZAYO-6461, US
     18798  UNALLOCATED  8.40.106.0/24             6461  ZAYO-6461, US
    394856  UNALLOCATED  8.40.216.0/24             3356  LEVEL3, US

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

Prefixes from the Special Purpose Address Registry (Global)
-----------------------------------------------------------

Prefix                Origin AS  Description
192.88.99.0/24             6939  HURRICANE, US

Complete listing at https://thyme.apnic.net/current/data-spar

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

Unassigned Network     ASN Information  AS Name
23.139.40.0/23       Origin:     50058  AUGUST-INTERNET August Internet, GB
23.139.40.0/23      Transit:      1299  TWELVE99 Arelion, fka Telia Carrier, SE
23.141.0.0/24        Origin:    395350  UNASSIGNED
23.141.0.0/24       Transit:     11426  TWC-11426-CAROLINAS, US
27.100.7.0/24        Origin:     56096  UNASSIGNED
27.100.7.0/24       Transit:     45455  TH-2S1N-AP Two S One N Co Ltd, Internet 
41.57.124.0/22       Origin:     37442  UNASSIGNED
41.57.124.0/22      Transit:     37204  TELONE, ZW
41.57.124.0/23       Origin:     37442  UNASSIGNED
41.57.124.0/23      Transit:     37204  TELONE, ZW

Complete listing at https://thyme.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        /8:16       /9:13      /10:40      /11:99      /12:303     
/13:592     /14:1209    /15:2063    /16:13539   /17:8322    /18:13912   
/19:25106   /20:44402   /21:52288   /22:108988  /23:96746   /24:536077  
/25:808     /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        5875        6891  UNI2-AS, ES
  9121        5832        6676  TTNET, TR
  8151        4503       10773  Uninet S.A. de C.V., MX
  8551        3467        4004  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 11492        3418        4514  CABLEONE, US
  6327        3248        3438  SHAW, CA
 39891        3189        4005  ALJAWWALSTC-AS, SA
  7155        2995        3906  VIASAT-SP-BACKBONE, US
 22773        2850        3833  ASN-CXA-ALL-CCI-22773-RDC, US
  6849        2612        2754  UKRTELNET, UA

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

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

   1:1928      2:1032      3:157       4:5         5:3827      6:110    
   7:6         8:1573      9:1        11:173      12:1643     13:340    
  14:2353     15:234      16:47       17:389      18:177      20:242    
  21:4        22:188      23:5813     24:2387     25:6        27:2609   
  29:19       31:2427     32:95       34:7        35:87       36:1811   
  37:4439     38:3307     39:720      40:152      41:3889     42:1128   
  43:2227     44:290      45:16035    46:4140     47:325      49:1711   
  50:1954     51:237      52:1452     54:384      55:856      56:8      
  57:59       58:1786     59:1163     60:962      61:2292     62:2530   
  63:1929     64:5608     65:2391     66:4875     67:2972     68:1180   
  69:4184     70:1319     71:681      72:3023     74:2637     75:1398   
  76:582      77:2227     78:3939     79:3128     80:1997     81:1780   
  82:1494     83:1206     84:1361     85:3709     86:725      87:1902   
  88:2798     89:3358     90:546      91:7620     92:2028     93:2558   
  94:3509     95:4764     96:1330     97:352      98:1026     99:751    
 100:77      101:1038    102:2173    103:29518   104:4535    105:468    
 106:878     107:2552    108:862     109:4318    110:1989    111:3323   
 112:2041    113:1536    114:1479    115:2002    116:1916    117:2427   
 118:2302    119:1826    120:1770    121:1078    122:2552    123:2086   
 124:1597    125:2124    128:1227    129:1067    130:984     131:2057   
 132:784     133:377     134:1938    135:302     136:890     137:868    
 138:2471    139:1506    140:934     141:1448    142:1317    143:1395   
 144:1214    145:350     146:1832    147:1516    148:2211    149:1743   
 150:865     151:1072    152:1862    153:462     154:3680    155:1445   
 156:1679    157:1275    158:1037    159:2219    160:2492    161:1285   
 162:3469    163:1307    164:1643    165:1628    166:769     167:1725   
 168:3815    169:886     170:4555    171:839     172:3291    173:3117   
 174:1025    175:1142    176:3618    177:4741    178:3540    179:2163   
 180:2330    181:3219    182:3238    183:1943    184:2345    185:19597  
 186:4332    187:3808    188:3978    189:3404    190:8947    191:1454   
 192:10971   193:8666    194:7063    195:5025    196:2954    197:2415   
 198:5998    199:6046    200:7590    201:5863    202:10518   203:10054  
 204:4528    205:3441    206:3759    207:3393    208:4021    209:4700   
 210:4381    211:2415    212:4065    213:3456    214:1147    215:67     
 216:6466    217:2648    218:1292    219:573     220:2010    221:967    
 222:829     223:1994   

End of report


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