[menog] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Sep 15 18:02:11 UTC 2023


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
UKNOF, 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 16 Sep, 2023

  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:                              929061
    Prefixes after maximum aggregation (per Origin AS):          352948
    Deaggregation factor:                                          2.63
    Unique aggregates announced (without unneeded subnets):      453321
Total ASes present in the Internet Routing Table:                 74787
    Prefixes per ASN:                                             12.42
Origin-only ASes present in the Internet Routing Table:           64210
Origin ASes announcing only one prefix:                           26341
Transit ASes present in the Internet Routing Table:               10577
Transit-only ASes present in the Internet Routing Table:            460
Average AS path length visible in the Internet Routing Table:       4.2
    Max AS path length visible:                                      70
    Max AS path prepend of ASN (263725)                              64
Prefixes from unregistered ASNs in the Routing Table:              1048
    Number of instances of unregistered ASNs:                      1054
Number of 32-bit ASNs allocated by the RIRs:                      42618
Number of 32-bit ASNs visible in the Routing Table:               35072
Prefixes from 32-bit ASNs in the Routing Table:                  175382
Number of bogon 32-bit ASNs visible in the Routing Table:            64
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            589
Number of addresses announced to Internet:                   3055181440
    Equivalent to 182 /8s, 26 /16s and 94 /24s
    Percentage of available address space announced:               82.5
    Percentage of allocated address space announced:               82.5
    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:      309004

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

Prefixes being announced by APNIC Region ASes:                   246515
    Total APNIC prefixes after maximum aggregation:               70837
    APNIC Deaggregation factor:                                    3.48
Prefixes being announced from the APNIC address blocks:          240162
    Unique aggregates announced from the APNIC address blocks:    98777
APNIC Region origin ASes present in the Internet Routing Table:   13638
    APNIC Prefixes per ASN:                                       17.61
APNIC Region origin ASes announcing only one prefix:               4057
APNIC Region transit ASes present in the Internet Routing Table:   1813
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         31
Number of APNIC region 32-bit ASNs visible in the Routing Table:   8965
Number of APNIC addresses announced to Internet:              772820352
    Equivalent to 46 /8s, 16 /16s and 77 /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, 131072-153913
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:                    272245
    Total ARIN prefixes after maximum aggregation:               123762
    ARIN Deaggregation factor:                                     2.20
Prefixes being announced from the ARIN address blocks:           275330
    Unique aggregates announced from the ARIN address blocks:    131685
ARIN Region origin ASes present in the Internet Routing Table:    19089
    ARIN Prefixes per ASN:                                        14.42
ARIN Region origin ASes announcing only one prefix:                6941
ARIN Region transit ASes present in the Internet Routing Table:    1957
Average ARIN Region AS path length visible:                         3.7
    Max ARIN Region AS path length visible:                          24
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4820
Number of ARIN addresses announced to Internet:              1278924288
    Equivalent to 76 /8s, 58 /16s and 214 /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:                    260909
    Total RIPE prefixes after maximum aggregation:               123251
    RIPE Deaggregation factor:                                     2.12
Prefixes being announced from the RIPE address blocks:           256571
    Unique aggregates announced from the RIPE address blocks:    160283
RIPE Region origin ASes present in the Internet Routing Table:    28388
    RIPE Prefixes per ASN:                                         9.04
RIPE Region origin ASes announcing only one prefix:               12040
RIPE Region transit ASes present in the Internet Routing Table:    3940
Average RIPE Region AS path length visible:                         4.3
    Max RIPE Region AS path length visible:                          34
Number of RIPE region 32-bit ASNs visible in the Routing Table:   11322
Number of RIPE addresses announced to Internet:               716908288
    Equivalent to 42 /8s, 187 /16s and 39 /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
                       196608-216475
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:                  118384
    Total LACNIC prefixes after maximum aggregation:              28439
    LACNIC Deaggregation factor:                                   4.16
Prefixes being announced from the LACNIC address blocks:         117347
    Unique aggregates announced from the LACNIC address blocks:   49224
LACNIC Region origin ASes present in the Internet Routing Table:  11023
    LACNIC Prefixes per ASN:                                      10.65
LACNIC Region origin ASes announcing only one prefix:              2686
LACNIC Region transit ASes present in the Internet Routing Table:  2322
Average LACNIC Region AS path length visible:                       4.9
    Max LACNIC Region AS path length visible:                        70
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8838
Number of LACNIC addresses announced to Internet:             178337536
    Equivalent to 10 /8s, 161 /16s and 55 /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:                  29960
    Total AfriNIC prefixes after maximum aggregation:              5944
    AfriNIC Deaggregation factor:                                  5.04
Prefixes being announced from the AfriNIC address blocks:         39062
    Unique aggregates announced from the AfriNIC address blocks:  12862
AfriNIC Region origin ASes present in the Internet Routing Table:  1787
    AfriNIC Prefixes per ASN:                                     21.86
AfriNIC Region origin ASes announcing only one prefix:              617
AfriNIC Region transit ASes present in the Internet Routing Table:  335
Average AfriNIC Region AS path length visible:                      4.9
    Max AfriNIC Region AS path length visible:                       28
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1127
Number of AfriNIC addresses announced to Internet:            107736576
    Equivalent to 6 /8s, 107 /16s and 238 /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        9487       8729      41  CHINAMOBILE-CN China Mobile Communicati
  7545        5729        785     691  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4938       4192      75  ERX-CERNET-BKB China Education and Rese
 18403        4260        347      25  FPT-AS-AP FPT Telecom Company, VN
  7713        3565       1043      63  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3323       1824      97  VNPT-AS-VN VNPT Corp, VN
  9498        3150        498     251  BBIL-AP BHARTI Airtel Ltd., IN
  7552        2929       1330      20  VIETEL-AS-AP Viettel Group, VN
  4766        2543      11270     601  KIXS-AS-KR Korea Telecom, KR
 24560        2514        849     387  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        9084      10996    3241  AMAZON-02, US
 11492        4527        300     671  CABLEONE, US
  7155        4179        288     101  VIASAT-SP-BACKBONE, US
 22773        3547       3056     304  ASN-CXA-ALL-CCI-22773-RDC, US
  6327        3540       1319      66  SHAW, CA
   749        3151      54959    2403  DNIC-AS-00749, US
 16625        3019       1445    2288  AKAMAI-AS, US
   367        2969       3831    1403  DNIC-ASBLK-00306-00371, US
396982        2698       3597     392  GOOGLE-CLOUD-PLATFORM, US
 30036        2499        357     359  MEDIACOM-ENTERPRISE-BUSINESS, 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        7385       1713     145  UNI2-AS, ES
 39891        4897        290      61  ALJAWWALSTC-AS, SA
 20940        4078       3398     153  AKAMAI-ASN1, NL
  8551        3449        368      34  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2981       2296     914  ROSTELECOM-AS, RU
  9009        2725        254    1395  M247, RO
 34984        2329        362     597  TELLCOM-AS, TR
 58224        1732        922     532  TCI, IR
 13188        1606        100      27  TRIOLAN, UA
 61317        1492        100    1159  ASDETUK www.heficed.com, US

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       11813       3367     596  UNINET, MX
 10620        3542        506     851  Telmex Colombia S.A., CO
 13999        2389        331     622  Mega Cable, S.A. de C.V., MX
 11830        2002        369      64  Instituto Costarricense de Electricidad
 28573        1325       2324     232  Claro NXT Telecomunicacoes Ltda, BR
  6503        1302        344     510  Axtel, S.A.B. de C.V., MX
  3816        1295        764     191  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
 11664        1123        182     425  Techtel LMDS Comunicaciones Interactiva
  6147        1114        370      22  Telefonica del Peru S.A.A., PE
 26615        1029       2501      49  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        1605        393      19  LINKdotNET-AS, EG
 24835        1533        549      28  RAYA-AS, EG
 36992        1358       1518     279  ETISALAT-MISR, EG
 36903        1242        550      99  MT-MPLS, MA
 29571        1046         67      45  ORANGE-COTE-IVOIRE, CI
 36935         920        520      35  Vodafone-, EG
  6713         550       1861      34  IAM-AS, MA
 15399         531         55      50  WANANCHI-, KE
 37342         490         32       1  MOVITEL, MZ
 24757         482         73       5  EthioNet-AS, ET

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       11813       3367     596  UNINET, MX
  9808        9487       8729      41  CHINAMOBILE-CN China Mobile Communicati
 16509        9084      10996    3241  AMAZON-02, US
 12479        7385       1713     145  UNI2-AS, ES
  7545        5729        785     691  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4938       4192      75  ERX-CERNET-BKB China Education and Rese
 39891        4897        290      61  ALJAWWALSTC-AS, SA
 11492        4527        300     671  CABLEONE, US
 18403        4260        347      25  FPT-AS-AP FPT Telecom Company, VN
  7155        4179        288     101  VIASAT-SP-BACKBONE, US

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

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

   ASN  No of nets  Net Savings  Description
  9808        9487         9446  CHINAMOBILE-CN China Mobile Communications Grou
 12479        7385         7240  UNI2-AS, ES
 16509        9084         5843  AMAZON-02, US
  7545        5729         5038  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4938         4863  ERX-CERNET-BKB China Education and Research Net
 39891        4897         4836  ALJAWWALSTC-AS, SA
 18403        4260         4235  FPT-AS-AP FPT Telecom Company, VN
  7155        4179         4078  VIASAT-SP-BACKBONE, US
 20940        4078         3925  AKAMAI-ASN1, NL
 11492        4527         3856  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
     33492  UNALLOCATED  8.6.184.0/23             33650  COMCAST-33650, US
     33123  UNALLOCATED  8.10.69.0/24             11168  SCC, US
     12169  UNALLOCATED  8.15.207.0/24            32787  PROLEXIC-TECHNOLOGIES-DDOS-M
     40493  UNALLOCATED  8.17.26.0/24              3356  LEVEL3, 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
    396894  UNALLOCATED  8.28.201.0/24            46887  LIGHTOWER, US
    394936  UNALLOCATED  8.33.224.0/24            22442  HOU-PHONOSCOPE, US
     54338  UNALLOCATED  8.33.241.0/24             6461  ZAYO-6461, 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
23.140.216.0/24      Origin:     27176  DATAWAGON, US
23.140.216.0/24     Transit:     20278  NEXEON, US
23.141.0.0/24        Origin:    395350  RESERVED, ZZ
23.141.0.0/24       Transit:     11426  TWC-11426-CAROLINAS, US
23.176.160.0/24      Origin:    397327  RESERVED, ZZ
23.176.160.0/24     Transit:     19108  SUDDENLINK-COMMUNICATIONS, US
23.189.192.0/24      Origin:     27593  RESERVED, ZZ
23.189.192.0/24     Transit:       174  COGENT-174, US
36.255.139.0/24      Origin:     56050  NEW-SHINE-INTERNET-TH 134 Yenchit Road, 
36.255.139.0/24     Transit:     58913  HCL-TH 4819 Supapong 3 Alley, Srinakarin

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       /9:14      /10:39      /11:101     /12:297     
/13:578     /14:1197    /15:2069    /16:13520   /17:8285    /18:13870   
/19:25148   /20:44402   /21:51212   /22:110196  /23:99117   /24:558255  
/25:745     /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        6471        7385  UNI2-AS, ES
  8151        5848       11813  UNINET, MX
 39891        3632        4897  ALJAWWALSTC-AS, SA
 11492        3439        4527  CABLEONE, US
  6327        3350        3540  SHAW, CA
  7155        3124        4179  VIASAT-SP-BACKBONE, US
  8551        2922        3449  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 22773        2594        3547  ASN-CXA-ALL-CCI-22773-RDC, US
 30036        2158        2499  MEDIACOM-ENTERPRISE-BUSINESS, US
 10620        2105        3542  Telmex Colombia S.A., CO

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

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

   1:2236      2:1428      3:263       4:5         5:4516      6:135    
   7:6         8:1542      9:1        11:172      12:1516     13:364    
  14:2323     15:302      16:196      17:369      18:644      20:286    
  21:4        22:188      23:6372     24:2501     25:2        27:2521   
  29:19       31:2524     32:79       34:26       35:117      36:1991   
  37:4533     38:5229     39:870      40:146      41:4019     42:2086   
  43:2298     44:320      45:16590    46:4298     47:374      49:1837   
  50:1887     51:597      52:1595     54:396      55:956      56:5      
  57:122      58:1873     59:1182     60:1002     61:2513     62:2677   
  63:1915     64:5635     65:2356     66:4926     67:3030     68:1343   
  69:4150     70:1194     71:661      72:2958     74:2609     75:1561   
  76:623      77:2296     78:1831     79:2986     80:2111     81:1807   
  82:1462     83:1292     84:1539     85:3056     86:766      87:1999   
  88:1169     89:3885     90:621      91:7823     92:2063     93:2622   
  94:3520     95:4013     96:1298     97:316      98:1082     99:736    
 100:90      101:1079    102:2883    103:32017   104:4614    105:561    
 106:901     107:2683    108:1130    109:4224    110:2128    111:3195   
 112:2071    113:1820    114:1673    115:1986    116:1904    117:2456   
 118:2681    119:1986    120:1803    121:1182    122:2600    123:2194   
 124:1625    125:2551    128:1463    129:930     130:1043    131:1951   
 132:818     133:408     134:1798    135:305     136:909     137:971    
 138:2627    139:1583    140:1187    141:1311    142:1515    143:1514   
 144:1005    145:348     146:1949    147:1593    148:2455    149:2263   
 150:875     151:1232    152:1872    153:523     154:5173    155:1390   
 156:1956    157:1324    158:1061    159:2247    160:2584    161:1583   
 162:3534    163:1602    164:1700    165:1840    166:1077    167:1732   
 168:3739    169:902     170:4654    171:904     172:3719    173:2965   
 174:981     175:1194    176:3775    177:4430    178:3509    179:2154   
 180:2477    181:3514    182:3365    183:1981    184:2286    185:20536  
 186:4643    187:4177    188:4165    189:3848    190:9208    191:1379   
 192:10971   193:8968    194:7303    195:5222    196:3119    197:2495   
 198:6007    199:6129    200:7946    201:6028    202:10550   203:10004  
 204:4560    205:3689    206:4371    207:3494    208:4159    209:4937   
 210:4489    211:2532    212:4241    213:3409    214:1091    215:58     
 216:6704    217:2780    218:1301    219:576     220:2033    221:982    
 222:845     223:2162   

End of report


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