[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Jul 14 18:02:14 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
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 15 Jul, 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:                              926979
    Prefixes after maximum aggregation (per Origin AS):          351217
    Deaggregation factor:                                          2.64
    Unique aggregates announced (without unneeded subnets):      451896
Total ASes present in the Internet Routing Table:                 74578
    Prefixes per ASN:                                             12.43
Origin-only ASes present in the Internet Routing Table:           64040
Origin ASes announcing only one prefix:                           26340
Transit ASes present in the Internet Routing Table:               10538
Transit-only ASes present in the Internet Routing Table:            439
Average AS path length visible in the Internet Routing Table:       4.3
    Max AS path length visible:                                      68
    Max AS path prepend of ASN (263725)                              64
Prefixes from unregistered ASNs in the Routing Table:              1048
    Number of instances of unregistered ASNs:                      1052
Number of 32-bit ASNs allocated by the RIRs:                      42267
Number of 32-bit ASNs visible in the Routing Table:               34804
Prefixes from 32-bit ASNs in the Routing Table:                  173237
Number of bogon 32-bit ASNs visible in the Routing Table:            29
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            564
Number of addresses announced to Internet:                   3054440448
    Equivalent to 182 /8s, 15 /16s and 16 /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:               99.6
Total number of prefixes smaller than registry allocations:      309081

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

Prefixes being announced by APNIC Region ASes:                   245848
    Total APNIC prefixes after maximum aggregation:               69865
    APNIC Deaggregation factor:                                    3.52
Prefixes being announced from the APNIC address blocks:          239678
    Unique aggregates announced from the APNIC address blocks:    98658
APNIC Region origin ASes present in the Internet Routing Table:   13507
    APNIC Prefixes per ASN:                                       17.74
APNIC Region origin ASes announcing only one prefix:               3997
APNIC Region transit ASes present in the Internet Routing Table:   1797
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:   8830
Number of APNIC addresses announced to Internet:              773696640
    Equivalent to 46 /8s, 29 /16s and 172 /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:                    271645
    Total ARIN prefixes after maximum aggregation:               123536
    ARIN Deaggregation factor:                                     2.20
Prefixes being announced from the ARIN address blocks:           273939
    Unique aggregates announced from the ARIN address blocks:    130821
ARIN Region origin ASes present in the Internet Routing Table:    19099
    ARIN Prefixes per ASN:                                        14.34
ARIN Region origin ASes announcing only one prefix:                6971
ARIN Region transit ASes present in the Internet Routing Table:    1952
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:    4813
Number of ARIN addresses announced to Internet:              1277673984
    Equivalent to 76 /8s, 39 /16s and 194 /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:                    259956
    Total RIPE prefixes after maximum aggregation:               122598
    RIPE Deaggregation factor:                                     2.12
Prefixes being announced from the RIPE address blocks:           256601
    Unique aggregates announced from the RIPE address blocks:    159771
RIPE Region origin ASes present in the Internet Routing Table:    28356
    RIPE Prefixes per ASN:                                         9.05
RIPE Region origin ASes announcing only one prefix:               12063
RIPE Region transit ASes present in the Internet Routing Table:    3928
Average RIPE Region AS path length visible:                         4.3
    Max RIPE Region AS path length visible:                          32
Number of RIPE region 32-bit ASNs visible in the Routing Table:   11233
Number of RIPE addresses announced to Internet:               716735872
    Equivalent to 42 /8s, 184 /16s and 133 /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:                  118894
    Total LACNIC prefixes after maximum aggregation:              28611
    LACNIC Deaggregation factor:                                   4.16
Prefixes being announced from the LACNIC address blocks:         118013
    Unique aggregates announced from the LACNIC address blocks:   49519
LACNIC Region origin ASes present in the Internet Routing Table:  11026
    LACNIC Prefixes per ASN:                                      10.70
LACNIC Region origin ASes announcing only one prefix:              2692
LACNIC Region transit ASes present in the Internet Routing Table:  2326
Average LACNIC Region AS path length visible:                       4.9
    Max LACNIC Region AS path length visible:                        68
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8815
Number of LACNIC addresses announced to Internet:             178450432
    Equivalent to 10 /8s, 162 /16s and 240 /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:                  29588
    Total AfriNIC prefixes after maximum aggregation:              5891
    AfriNIC Deaggregation factor:                                  5.02
Prefixes being announced from the AfriNIC address blocks:         38184
    Unique aggregates announced from the AfriNIC address blocks:  12662
AfriNIC Region origin ASes present in the Internet Routing Table:  1766
    AfriNIC Prefixes per ASN:                                     21.62
AfriNIC Region origin ASes announcing only one prefix:              617
AfriNIC Region transit ASes present in the Internet Routing Table:  329
Average AfriNIC Region AS path length visible:                      4.8
    Max AfriNIC Region AS path length visible:                       30
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1113
Number of AfriNIC addresses announced to Internet:            107549184
    Equivalent to 6 /8s, 105 /16s and 18 /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        9530       8706      40  CHINAMOBILE-CN China Mobile Communicati
  7545        5681        784     691  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4854       4192      75  ERX-CERNET-BKB China Education and Rese
 18403        4237        347      25  FPT-AS-AP FPT Telecom Company, VN
  7713        3536       1043      63  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3382       1872      93  VNPT-AS-VN VNPT Corp, VN
  7552        3344       1331      21  VIETEL-AS-AP Viettel Group, VN
  9498        3047        497     247  BBIL-AP BHARTI Airtel Ltd., IN
  4766        2538      11270     591  KIXS-AS-KR Korea Telecom, KR
 24560        2444        834     445  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        8736      10892    3083  AMAZON-02, US
 11492        4515        299     629  CABLEONE, US
  7155        4172        288      88  VIASAT-SP-BACKBONE, US
 22773        3544       3054     269  ASN-CXA-ALL-CCI-22773-RDC, US
  6327        3525       1319      66  SHAW, CA
 16625        3153       1565    2366  AKAMAI-AS, US
   749        3142      54962    2394  DNIC-AS-00749, US
   367        2750       3750    1318  DNIC-ASBLK-00306-00371, US
396982        2676       3594     383  GOOGLE-CLOUD-PLATFORM, US
 30036        2503        361     396  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        7298       1706     141  UNI2-AS, ES
 39891        4897        290      61  ALJAWWALSTC-AS, SA
 20940        4079       3398     161  AKAMAI-ASN1, NL
  8551        3467        368      33  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2971       2294     913  ROSTELECOM-AS, RU
  9009        2649        245    1376  M247, RO
 34984        2307        361     609  TELLCOM-AS, TR
 58224        1824        946     535  TCI, IR
  6849        1800        307      17  UKRTELNET, UA
 13188        1606        100      27  TRIOLAN, UA

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       11574       3376     592  UNINET, MX
 10620        3529        507     840  Telmex Colombia S.A., CO
 13999        2403        360     632  Mega Cable, S.A. de C.V., MX
 11830        2225        369      64  Instituto Costarricense de Electricidad
 28573        1316       2324     239  Claro NXT Telecomunicacoes Ltda, BR
  3816        1306        774     170  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6503        1303        344     511  Axtel, S.A.B. de C.V., MX
  6147        1130        370      22  Telefonica del Peru S.A.A., PE
 11664        1101        177     440  Techtel LMDS Comunicaciones Interactiva
 26615        1037       2500      47  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        1627        393      19  LINKdotNET-AS, EG
 24835        1548        533      27  RAYA-AS, EG
 36992        1352       1518     282  ETISALAT-MISR, EG
 36903        1242        550      99  MT-MPLS, MA
 29571        1052         67      45  ORANGE-COTE-IVOIRE, CI
 36935         923        521      44  Vodafone-, EG
  6713         551       1861      34  IAM-AS, MA
 15399         534         54      50  WANANCHI-, KE
 24757         485         73       5  EthioNet-AS, ET
 37342         466         32       1  MOVITEL, MZ

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       11574       3376     592  UNINET, MX
  9808        9530       8706      40  CHINAMOBILE-CN China Mobile Communicati
 16509        8736      10892    3083  AMAZON-02, US
 12479        7298       1706     141  UNI2-AS, ES
  7545        5681        784     691  TPG-INTERNET-AP TPG Telecom Limited, AU
 39891        4897        290      61  ALJAWWALSTC-AS, SA
  4538        4854       4192      75  ERX-CERNET-BKB China Education and Rese
 11492        4515        299     629  CABLEONE, US
 18403        4237        347      25  FPT-AS-AP FPT Telecom Company, VN
  7155        4172        288      88  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        9530         9490  CHINAMOBILE-CN China Mobile Communications Grou
 12479        7298         7157  UNI2-AS, ES
 16509        8736         5653  AMAZON-02, US
  7545        5681         4990  TPG-INTERNET-AP TPG Telecom Limited, AU
 39891        4897         4836  ALJAWWALSTC-AS, SA
  4538        4854         4779  ERX-CERNET-BKB China Education and Research Net
 18403        4237         4212  FPT-AS-AP FPT Telecom Company, VN
  7155        4172         4084  VIASAT-SP-BACKBONE, US
 20940        4079         3918  AKAMAI-ASN1, NL
 11492        4515         3886  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
     53775  UNALLOCATED  8.20.88.0/24              7029  WINDSTREAM, US
     19695  UNALLOCATED  8.20.161.0/24             7015  COMCAST-7015, 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  UNASSIGNED
23.141.0.0/24       Transit:     11426  TWC-11426-CAROLINAS, US
23.176.160.0/24      Origin:    397327  UNASSIGNED
23.176.160.0/24     Transit:     19108  SUDDENLINK-COMMUNICATIONS, 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

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      /11:103     /12:296     
/13:577     /14:1200    /15:2073    /16:13473   /17:8273    /18:13877   
/19:25230   /20:44407   /21:51589   /22:110169  /23:98735   /24:556159  
/25:749     /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        6386        7298  UNI2-AS, ES
  8151        5503       11574  UNINET, MX
 39891        3632        4897  ALJAWWALSTC-AS, SA
 11492        3426        4515  CABLEONE, US
  6327        3335        3525  SHAW, CA
  7155        3120        4172  VIASAT-SP-BACKBONE, US
  8551        2936        3467  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 22773        2609        3544  ASN-CXA-ALL-CCI-22773-RDC, US
 30036        2158        2503  MEDIACOM-ENTERPRISE-BUSINESS, US
 10620        2087        3529  Telmex Colombia S.A., CO

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

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

   1:2208      2:1350      3:227       4:5         5:4496      6:130    
   7:6         8:1552      9:1        11:172      12:1520     13:382    
  14:2321     15:299      16:193      17:373      18:524      20:268    
  21:4        22:188      23:6373     24:2610     25:4        27:2473   
  29:19       31:2529     32:80       34:26       35:114      36:1966   
  37:4690     38:5006     39:829      40:152      41:3905     42:2020   
  43:2326     44:304      45:16637    46:4364     47:377      49:1773   
  50:1858     51:586      52:1595     54:397      55:976      56:8      
  57:120      58:1887     59:1149     60:984      61:2494     62:2664   
  63:1909     64:5604     65:2321     66:4989     67:3061     68:1334   
  69:4106     70:1210     71:687      72:2987     74:2639     75:1568   
  76:617      77:2445     78:1825     79:2979     80:2101     81:1796   
  82:1501     83:1264     84:1544     85:3002     86:765      87:2005   
  88:1182     89:3834     90:614      91:7786     92:2041     93:2602   
  94:3571     95:4048     96:1311     97:337      98:1153     99:735    
 100:95      101:1082    102:2806    103:31670   104:4575    105:504    
 106:886     107:2556    108:1077    109:4244    110:2111    111:3184   
 112:2061    113:1813    114:1644    115:1975    116:1916    117:2530   
 118:2618    119:1989    120:1820    121:1136    122:2570    123:2181   
 124:1617    125:2495    128:1458    129:1059    130:1017    131:1991   
 132:812     133:422     134:1800    135:307     136:886     137:954    
 138:2540    139:1591    140:1258    141:1299    142:1476    143:1502   
 144:988     145:341     146:1964    147:1587    148:2430    149:2139   
 150:883     151:1166    152:1834    153:496     154:4649    155:1358   
 156:1833    157:1316    158:1088    159:2267    160:2582    161:1554   
 162:3508    163:1569    164:1623    165:1866    166:1066    167:1714   
 168:3878    169:950     170:4614    171:890     172:3645    173:2966   
 174:1090    175:1192    176:3744    177:4492    178:3607    179:2173   
 180:2446    181:3493    182:3438    183:1993    184:2324    185:20482  
 186:4745    187:4088    188:4122    189:3710    190:9253    191:1391   
 192:10933   193:8925    194:7327    195:5140    196:3112    197:2379   
 198:5999    199:6105    200:8083    201:5948    202:10600   203:10127  
 204:4563    205:3701    206:4339    207:3458    208:4144    209:4933   
 210:4474    211:2527    212:4253    213:3590    214:1091    215:59     
 216:6680    217:2737    218:1297    219:584     220:1985    221:965    
 222:855     223:2185   

End of report


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