[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Jul 7 18:02:07 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 08 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:                              927158
    Prefixes after maximum aggregation (per Origin AS):          351334
    Deaggregation factor:                                          2.64
    Unique aggregates announced (without unneeded subnets):      451954
Total ASes present in the Internet Routing Table:                 74563
    Prefixes per ASN:                                             12.43
Origin-only ASes present in the Internet Routing Table:           64025
Origin ASes announcing only one prefix:                           26303
Transit ASes present in the Internet Routing Table:               10538
Transit-only ASes present in the Internet Routing Table:            449
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:              1030
    Number of instances of unregistered ASNs:                      1034
Number of 32-bit ASNs allocated by the RIRs:                      42257
Number of 32-bit ASNs visible in the Routing Table:               34790
Prefixes from 32-bit ASNs in the Routing Table:                  173625
Number of bogon 32-bit ASNs visible in the Routing Table:           121
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            549
Number of addresses announced to Internet:                   3055806464
    Equivalent to 182 /8s, 35 /16s and 232 /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:      309210

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

Prefixes being announced by APNIC Region ASes:                   245929
    Total APNIC prefixes after maximum aggregation:               69872
    APNIC Deaggregation factor:                                    3.52
Prefixes being announced from the APNIC address blocks:          239749
    Unique aggregates announced from the APNIC address blocks:    98761
APNIC Region origin ASes present in the Internet Routing Table:   13500
    APNIC Prefixes per ASN:                                       17.76
APNIC Region origin ASes announcing only one prefix:               4010
APNIC Region transit ASes present in the Internet Routing Table:   1796
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:   8826
Number of APNIC addresses announced to Internet:              773579392
    Equivalent to 46 /8s, 27 /16s and 226 /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:                    271431
    Total ARIN prefixes after maximum aggregation:               123582
    ARIN Deaggregation factor:                                     2.20
Prefixes being announced from the ARIN address blocks:           273803
    Unique aggregates announced from the ARIN address blocks:    130901
ARIN Region origin ASes present in the Internet Routing Table:    19104
    ARIN Prefixes per ASN:                                        14.33
ARIN Region origin ASes announcing only one prefix:                6970
ARIN Region transit ASes present in the Internet Routing Table:    1959
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:    4814
Number of ARIN addresses announced to Internet:              1278757632
    Equivalent to 76 /8s, 56 /16s and 75 /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:                    260245
    Total RIPE prefixes after maximum aggregation:               122727
    RIPE Deaggregation factor:                                     2.12
Prefixes being announced from the RIPE address blocks:           256783
    Unique aggregates announced from the RIPE address blocks:    159728
RIPE Region origin ASes present in the Internet Routing Table:    28357
    RIPE Prefixes per ASN:                                         9.06
RIPE Region origin ASes announcing only one prefix:               12044
RIPE Region transit ASes present in the Internet Routing Table:    3939
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:   11231
Number of RIPE addresses announced to Internet:               717248384
    Equivalent to 42 /8s, 192 /16s and 87 /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:                  118958
    Total LACNIC prefixes after maximum aggregation:              28592
    LACNIC Deaggregation factor:                                   4.16
Prefixes being announced from the LACNIC address blocks:         118102
    Unique aggregates announced from the LACNIC address blocks:   49495
LACNIC Region origin ASes present in the Internet Routing Table:  11017
    LACNIC Prefixes per ASN:                                      10.72
LACNIC Region origin ASes announcing only one prefix:              2661
LACNIC Region transit ASes present in the Internet Routing Table:  2303
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:  8807
Number of LACNIC addresses announced to Internet:             178396928
    Equivalent to 10 /8s, 162 /16s and 31 /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:                  29565
    Total AfriNIC prefixes after maximum aggregation:              5861
    AfriNIC Deaggregation factor:                                  5.04
Prefixes being announced from the AfriNIC address blocks:         38172
    Unique aggregates announced from the AfriNIC address blocks:  12612
AfriNIC Region origin ASes present in the Internet Routing Table:  1763
    AfriNIC Prefixes per ASN:                                     21.65
AfriNIC Region origin ASes announcing only one prefix:              618
AfriNIC Region transit ASes present in the Internet Routing Table:  329
Average AfriNIC Region AS path length visible:                      4.9
    Max AfriNIC Region AS path length visible:                       40
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1112
Number of AfriNIC addresses announced to Internet:            107498240
    Equivalent to 6 /8s, 104 /16s and 75 /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        9534       8706      40  CHINAMOBILE-CN China Mobile Communicati
  7545        5685        784     692  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4856       4192      75  ERX-CERNET-BKB China Education and Rese
 18403        4216        347      25  FPT-AS-AP FPT Telecom Company, VN
  7713        3553       1043      63  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3380       1856      96  VNPT-AS-VN VNPT Corp, VN
  7552        3335       1331      21  VIETEL-AS-AP Viettel Group, VN
  9498        3043        498     248  BBIL-AP BHARTI Airtel Ltd., IN
  4766        2558      11271     592  KIXS-AS-KR Korea Telecom, KR
 24560        2442        836     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        8680      10904    3120  AMAZON-02, US
 11492        4522        300     614  CABLEONE, US
  7155        4170        288      87  VIASAT-SP-BACKBONE, US
 22773        3544       3054     269  ASN-CXA-ALL-CCI-22773-RDC, US
  6327        3524       1319      66  SHAW, CA
 16625        3147       1559    2365  AKAMAI-AS, US
   749        3143      54962    2395  DNIC-AS-00749, US
   367        2743       3743    1311  DNIC-ASBLK-00306-00371, US
396982        2674       3594     384  GOOGLE-CLOUD-PLATFORM, US
 30036        2492        360     431  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        7301       1706     141  UNI2-AS, ES
 39891        4897        290      61  ALJAWWALSTC-AS, SA
 20940        4083       3398     160  AKAMAI-ASN1, NL
  8551        3466        368      33  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2972       2294     913  ROSTELECOM-AS, RU
  9009        2654        246    1384  M247, RO
 34984        2307        361     609  TELLCOM-AS, TR
 58224        1832        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       11544       3376     592  UNINET, MX
 10620        3531        507     841  Telmex Colombia S.A., CO
 13999        2403        360     631  Mega Cable, S.A. de C.V., MX
 11830        2222        369      64  Instituto Costarricense de Electricidad
 28573        1316       2324     238  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        1131        370      22  Telefonica del Peru S.A.A., PE
 11664        1102        177     437  Techtel LMDS Comunicaciones Interactiva
 26615        1036       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        1617        393      19  LINKdotNET-AS, EG
 24835        1548        533      27  RAYA-AS, EG
 36992        1314       1518     282  ETISALAT-MISR, EG
 36903        1242        550      99  MT-MPLS, MA
 29571        1053         67      46  ORANGE-COTE-IVOIRE, CI
 36935         923        521      44  Vodafone-, EG
  6713         550       1861      34  IAM-AS, MA
 15399         534         54      50  WANANCHI-, KE
 24757         488         73       5  EthioNet-AS, ET
 37342         468         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       11544       3376     592  UNINET, MX
  9808        9534       8706      40  CHINAMOBILE-CN China Mobile Communicati
 16509        8680      10904    3120  AMAZON-02, US
 12479        7301       1706     141  UNI2-AS, ES
  7545        5685        784     692  TPG-INTERNET-AP TPG Telecom Limited, AU
 39891        4897        290      61  ALJAWWALSTC-AS, SA
  4538        4856       4192      75  ERX-CERNET-BKB China Education and Rese
 11492        4522        300     614  CABLEONE, US
 18403        4216        347      25  FPT-AS-AP FPT Telecom Company, VN
  7155        4170        288      87  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        9534         9494  CHINAMOBILE-CN China Mobile Communications Grou
 12479        7301         7160  UNI2-AS, ES
 16509        8680         5560  AMAZON-02, US
  7545        5685         4993  TPG-INTERNET-AP TPG Telecom Limited, AU
 39891        4897         4836  ALJAWWALSTC-AS, SA
  4538        4856         4781  ERX-CERNET-BKB China Education and Research Net
 18403        4216         4191  FPT-AS-AP FPT Telecom Company, VN
  7155        4170         4083  VIASAT-SP-BACKBONE, US
 20940        4083         3923  AKAMAI-ASN1, NL
 11492        4522         3908  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            46887  LIGHTOWER, 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
     54338  UNALLOCATED  8.33.241.0/24             6461  ZAYO-6461, US
     18798  UNALLOCATED  8.40.106.0/24             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
23.157.120.0/24      Origin:     32872  UNASSIGNED
23.157.120.0/24     Transit:      6939  HURRICANE, US
23.157.136.0/24      Origin:      6145  SYNIO-NET, CA
23.157.136.0/24     Transit:     50058  August Internet, GB
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 

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     /12:297     
/13:577     /14:1201    /15:2075    /16:13470   /17:8265    /18:13855   
/19:25227   /20:44404   /21:51538   /22:110124  /23:98754   /24:556448  
/25:751     /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        6389        7301  UNI2-AS, ES
  8151        5472       11544  UNINET, MX
 39891        3632        4897  ALJAWWALSTC-AS, SA
 11492        3431        4522  CABLEONE, US
  6327        3334        3524  SHAW, CA
  7155        3118        4170  VIASAT-SP-BACKBONE, US
  8551        2935        3466  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 22773        2609        3544  ASN-CXA-ALL-CCI-22773-RDC, US
 30036        2147        2492  MEDIACOM-ENTERPRISE-BUSINESS, US
 10620        2089        3531  Telmex Colombia S.A., CO

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

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

   1:2192      2:1341      3:227       4:5         5:4516      6:130    
   7:6         8:1553      9:1        11:172      12:1517     13:387    
  14:2323     15:299      16:196      17:373      18:502      20:262    
  21:4        22:188      23:6365     24:2535     25:6        27:2467   
  29:19       31:2518     32:80       34:23       35:114      36:1966   
  37:4689     38:5001     39:827      40:151      41:3936     42:2006   
  43:2339     44:304      45:16666    46:4371     47:377      49:1770   
  50:1862     51:585      52:1590     54:395      55:978      56:8      
  57:119      58:1888     59:1161     60:984      61:2501     62:2660   
  63:1912     64:5621     65:2319     66:5040     67:3047     68:1354   
  69:4098     70:1212     71:687      72:2987     74:2634     75:1567   
  76:615      77:2456     78:1836     79:2981     80:2120     81:1788   
  82:1499     83:1258     84:1549     85:3005     86:770      87:2007   
  88:1188     89:3801     90:615      91:7773     92:2046     93:2606   
  94:3580     95:4058     96:1313     97:340      98:1136     99:736    
 100:94      101:1080    102:2802    103:31670   104:4567    105:506    
 106:894     107:2559    108:1084    109:4249    110:2101    111:3188   
 112:2061    113:1815    114:1644    115:1971    116:1912    117:2536   
 118:2618    119:1987    120:1821    121:1135    122:2602    123:2178   
 124:1620    125:2495    128:1460    129:1057    130:1016    131:1970   
 132:812     133:422     134:1798    135:308     136:890     137:953    
 138:2541    139:1577    140:1253    141:1359    142:1472    143:1509   
 144:1038    145:340     146:1959    147:1585    148:2430    149:2187   
 150:876     151:1166    152:1846    153:496     154:4650    155:1389   
 156:1814    157:1313    158:1089    159:2265    160:2583    161:1559   
 162:3512    163:1566    164:1607    165:1857    166:1077    167:1719   
 168:3871    169:953     170:4618    171:888     172:3638    173:2960   
 174:1085    175:1193    176:3780    177:4515    178:3614    179:2169   
 180:2437    181:3488    182:3435    183:1996    184:2323    185:20456  
 186:4770    187:4081    188:4124    189:3704    190:9256    191:1391   
 192:10927   193:8935    194:7339    195:5162    196:3120    197:2378   
 198:5994    199:6111    200:8091    201:5929    202:10596   203:10135  
 204:4571    205:3709    206:4334    207:3444    208:4145    209:4930   
 210:4473    211:2532    212:4261    213:3606    214:1085    215:59     
 216:6669    217:2762    218:1297    219:584     220:2000    221:965    
 222:855     223:2187   

End of report


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