[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Nov 25 18:02:50 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 26 Nov, 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:                              916410
    Prefixes after maximum aggregation (per Origin AS):          346196
    Deaggregation factor:                                          2.65
    Unique aggregates announced (without unneeded subnets):      442878
Total ASes present in the Internet Routing Table:                 73851
    Prefixes per ASN:                                             12.41
Origin-only ASes present in the Internet Routing Table:           63411
Origin ASes announcing only one prefix:                           26014
Transit ASes present in the Internet Routing Table:               10440
Transit-only ASes present in the Internet Routing Table:            416
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:               991
    Number of instances of unregistered ASNs:                       998
Number of 32-bit ASNs allocated by the RIRs:                      40721
Number of 32-bit ASNs visible in the Routing Table:               33758
Prefixes from 32-bit ASNs in the Routing Table:                  164456
Number of bogon 32-bit ASNs visible in the Routing Table:            20
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            519
Number of addresses announced to Internet:                   3063543424
    Equivalent to 182 /8s, 153 /16s and 246 /24s
    Percentage of available address space announced:               82.7
    Percentage of allocated address space announced:               82.7
    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:      311115

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

Prefixes being announced by APNIC Region ASes:                   239651
    Total APNIC prefixes after maximum aggregation:               68233
    APNIC Deaggregation factor:                                    3.51
Prefixes being announced from the APNIC address blocks:          234616
    Unique aggregates announced from the APNIC address blocks:    97365
APNIC Region origin ASes present in the Internet Routing Table:   13129
    APNIC Prefixes per ASN:                                       17.87
APNIC Region origin ASes announcing only one prefix:               3814
APNIC Region transit ASes present in the Internet Routing Table:   1756
Average APNIC Region AS path length visible:                        4.6
    Max APNIC Region AS path length visible:                         31
Number of APNIC region 32-bit ASNs visible in the Routing Table:   8380
Number of APNIC addresses announced to Internet:              773709568
    Equivalent to 46 /8s, 29 /16s and 223 /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:                    267370
    Total ARIN prefixes after maximum aggregation:               121947
    ARIN Deaggregation factor:                                     2.19
Prefixes being announced from the ARIN address blocks:           268887
    Unique aggregates announced from the ARIN address blocks:    129472
ARIN Region origin ASes present in the Internet Routing Table:    19076
    ARIN Prefixes per ASN:                                        14.10
ARIN Region origin ASes announcing only one prefix:                6975
ARIN Region transit ASes present in the Internet Routing Table:    1934
Average ARIN Region AS path length visible:                         3.7
    Max ARIN Region AS path length visible:                          35
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4685
Number of ARIN addresses announced to Internet:              1289378560
    Equivalent to 76 /8s, 218 /16s and 91 /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:                    262443
    Total RIPE prefixes after maximum aggregation:               121256
    RIPE Deaggregation factor:                                     2.16
Prefixes being announced from the RIPE address blocks:           259105
    Unique aggregates announced from the RIPE address blocks:    154703
RIPE Region origin ASes present in the Internet Routing Table:    28130
    RIPE Prefixes per ASN:                                         9.21
RIPE Region origin ASes announcing only one prefix:               11967
RIPE Region transit ASes present in the Internet Routing Table:    3956
Average RIPE Region AS path length visible:                         4.2
    Max RIPE Region AS path length visible:                          34
Number of RIPE region 32-bit ASNs visible in the Routing Table:   10893
Number of RIPE addresses announced to Internet:               716124032
    Equivalent to 42 /8s, 175 /16s and 47 /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:                  117281
    Total LACNIC prefixes after maximum aggregation:              28363
    LACNIC Deaggregation factor:                                   4.13
Prefixes being announced from the LACNIC address blocks:         116654
    Unique aggregates announced from the LACNIC address blocks:   48886
LACNIC Region origin ASes present in the Internet Routing Table:  11006
    LACNIC Prefixes per ASN:                                      10.60
LACNIC Region origin ASes announcing only one prefix:              2663
LACNIC Region transit ASes present in the Internet Routing Table:  2267
Average LACNIC Region AS path length visible:                       5.0
    Max LACNIC Region AS path length visible:                        55
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8764
Number of LACNIC addresses announced to Internet:             175912448
    Equivalent to 10 /8s, 124 /16s and 54 /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:                  28674
    Total AfriNIC prefixes after maximum aggregation:              5642
    AfriNIC Deaggregation factor:                                  5.08
Prefixes being announced from the AfriNIC address blocks:         36629
    Unique aggregates announced from the AfriNIC address blocks:  12024
AfriNIC Region origin ASes present in the Internet Routing Table:  1708
    AfriNIC Prefixes per ASN:                                     21.45
AfriNIC Region origin ASes announcing only one prefix:              595
AfriNIC Region transit ASes present in the Internet Routing Table:  329
Average AfriNIC Region AS path length visible:                      5.0
    Max AfriNIC Region AS path length visible:                       37
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1036
Number of AfriNIC addresses announced to Internet:            108127744
    Equivalent to 6 /8s, 113 /16s and 230 /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        9139       8884      50  CHINAMOBILE-CN China Mobile Communicati
  7545        5948        786     695  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4880       4192      75  ERX-CERNET-BKB China Education and Rese
  7552        3624       1330      20  VIETEL-AS-AP Viettel Group, VN
  7713        3515       1043      63  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3365       1867      82  VNPT-AS-VN VNPT Corp, VN
  9498        2543        499     237  BBIL-AP BHARTI Airtel Ltd., IN
  4766        2536      11252     601  KIXS-AS-KR Korea Telecom, KR
 24560        2301        849     417  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd
 45090        2180       1438      79  TENCENT-NET-AP Shenzhen Tencent Compute

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        7661      10622    2886  AMAZON-02, US
 11492        4579        303     539  CABLEONE, US
  7155        3966        265      32  VIASAT-SP-BACKBONE, US
 22773        3729       3061     327  ASN-CXA-ALL-CCI-22773-RDC, US
 16625        3588       1879    2570  AKAMAI-AS, US
  6327        3524       1320      63  SHAW, CA
   749        3065      50661    2332  DNIC-AS-00749, US
 30036        2589        369     312  MEDIACOM-ENTERPRISE-BUSINESS, US
  7018        2585      24059    1552  ATT-INTERNET4, US
396982        2564       3482     359  GOOGLE-CLOUD-PLATFORM, 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        6952       1730     145  UNI2-AS, ES
  9121        6401       1692      17  TTNET, TR
 20940        4107       3400     183  AKAMAI-ASN1, NL
 39891        4010        234      47  ALJAWWALSTC-AS, SA
  8551        3979        374      38  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2950       2290     912  ROSTELECOM-AS, RU
  9009        2647        253    1361  M247, RO
 47331        2548        377    1923  TTNET, TR
 34984        2246        357     610  TELLCOM-AS, TR
  6849        2194        339      20  UKRTELNET, 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       10889       3350     600  Uninet S.A. de C.V., MX
 10620        3455        506     852  Telmex Colombia S.A., CO
 11830        2301        369      64  Instituto Costarricense de Electricidad
 13999        2125        348     550  Mega Cable, S.A. de C.V., MX
 28573        1336       2327     262  Claro NXT Telecomunicacoes Ltda, BR
  6503        1293        338     521  Axtel, S.A.B. de C.V., MX
  3816        1287        728     154  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
 11664        1131        183     478  Techtel LMDS Comunicaciones Interactiva
  6147        1087        369      22  Telefonica del Peru S.A.A., PE
 26615         988       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
 24835        1545        537      31  RAYA-AS, EG
 24863        1539        393      21  LINKdotNET-AS, EG
 36992        1356       1520     269  ETISALAT-MISR, EG
 36903        1242        550      99  MT-MPLS, MA
 29571        1011         67      40  ORANGE-COTE-IVOIRE, CI
 36935         879        520      42  Vodafone-, EG
  6713         613       1863      34  IAM-AS, MA
 15399         530         54      45  WANANCHI-, KE
 37342         441         32       1  MOVITEL, MZ
 23889         400        231      14  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       10889       3350     600  Uninet S.A. de C.V., MX
  9808        9139       8884      50  CHINAMOBILE-CN China Mobile Communicati
 16509        7661      10622    2886  AMAZON-02, US
 12479        6952       1730     145  UNI2-AS, ES
  9121        6401       1692      17  TTNET, TR
  7545        5948        786     695  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4880       4192      75  ERX-CERNET-BKB China Education and Rese
 11492        4579        303     539  CABLEONE, US
 20940        4107       3400     183  AKAMAI-ASN1, NL
 39891        4010        234      47  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        9139         9089  CHINAMOBILE-CN China Mobile Communications Grou
 12479        6952         6807  UNI2-AS, ES
  9121        6401         6384  TTNET, TR
  7545        5948         5253  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4880         4805  ERX-CERNET-BKB China Education and Research Net
 16509        7661         4775  AMAZON-02, US
 11492        4579         4040  CABLEONE, US
 39891        4010         3963  ALJAWWALSTC-AS, SA
  8551        3979         3941  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  7155        3966         3934  VIASAT-SP-BACKBONE, 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
     65000  PRIVATE      2.92.64.0/20              8371  VIMPELCOM-NN Vimpelcom, Nizh
     65000  PRIVATE      2.92.80.0/20              8371  VIMPELCOM-NN Vimpelcom, Nizh
    398083  UNALLOCATED  5.133.124.0/24          399587  UT, US
     33123  UNALLOCATED  8.10.69.0/24             11168  SCC, US
     16641  UNALLOCATED  8.10.194.0/24             3356  LEVEL3, US
     16641  UNALLOCATED  8.10.210.0/24             3356  LEVEL3, US
     25674  UNALLOCATED  8.12.76.0/24              3356  LEVEL3, US
     16641  UNALLOCATED  8.12.250.0/24             3356  LEVEL3, US
     25674  UNALLOCATED  8.14.115.0/24             3356  LEVEL3, US
     12169  UNALLOCATED  8.15.207.0/24            32787  PROLEXIC-TECHNOLOGIES-DDOS-M

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
23.131.184.0/24      Origin:       174  COGENT-174, US
23.131.184.0/24     Transit:      2516  KDDI KDDI CORPORATION, JP
23.131.185.0/24      Origin:       174  COGENT-174, US
23.131.185.0/24     Transit:      2516  KDDI KDDI CORPORATION, JP
23.131.186.0/24      Origin:       174  COGENT-174, US
23.131.186.0/24     Transit:      2516  KDDI KDDI CORPORATION, JP
23.131.187.0/24      Origin:       174  COGENT-174, US
23.131.187.0/24     Transit:      2516  KDDI KDDI CORPORATION, JP
23.131.188.0/24      Origin:     46450  PILOT, US
23.131.188.0/24     Transit:      1299  TWELVE99 Arelion, fka Telia Carrier, SE

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      /10:39      /11:100     /12:295     
/13:587     /14:1201    /15:2045    /16:13523   /17:8317    /18:13914   
/19:25200   /20:44361   /21:52438   /22:110265  /23:97998   /24:545272  
/25:826     /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        5983        6952  UNI2-AS, ES
  9121        5553        6401  TTNET, TR
  8151        4834       10889  Uninet S.A. de C.V., MX
 11492        3485        4579  CABLEONE, US
  8551        3443        3979  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  6327        3332        3524  SHAW, CA
 39891        3193        4010  ALJAWWALSTC-AS, SA
  7155        3055        3966  VIASAT-SP-BACKBONE, US
 22773        2752        3729  ASN-CXA-ALL-CCI-22773-RDC, US
 30036        2247        2589  MEDIACOM-ENTERPRISE-BUSINESS, US

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

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

   1:1870      2:1029      3:166       4:5         5:4046      6:117    
   7:5         8:1585      9:1        11:173      12:1617     13:380    
  14:2377     15:287      16:72       17:366      18:386      20:239    
  21:4        22:188      23:6020     24:2465     25:6        27:2701   
  29:19       31:2483     32:98       34:8        35:94       36:1806   
  37:4544     38:3870     39:770      40:144      41:3951     42:1195   
  43:2303     44:303      45:16369    46:4144     47:379      49:1716   
  50:1933     51:244      52:1506     54:398      55:798      56:8      
  57:78       58:1797     59:1157     60:1005     61:2428     62:2564   
  63:1953     64:5649     65:2339     66:4851     67:3003     68:1381   
  69:4178     70:1293     71:688      72:2999     74:2645     75:1472   
  76:600      77:2253     78:3964     79:3155     80:2043     81:1830   
  82:1500     83:1220     84:1511     85:3752     86:745      87:1929   
  88:2842     89:3483     90:573      91:7614     92:1991     93:2573   
  94:3543     95:4827     96:1338     97:348      98:1174     99:740    
 100:69      101:1055    102:2455    103:30537   104:4555    105:477    
 106:828     107:2532    108:919     109:4280    110:2016    111:3318   
 112:2039    113:1571    114:1613    115:2073    116:1908    117:2468   
 118:2335    119:1871    120:1726    121:1112    122:2600    123:2137   
 124:1577    125:2200    128:1260    129:979     130:972     131:2024   
 132:842     133:401     134:1914    135:295     136:880     137:910    
 138:2542    139:1521    140:1049    141:1482    142:1417    143:1408   
 144:1200    145:352     146:1896    147:1511    148:2273    149:1846   
 150:866     151:1145    152:1836    153:456     154:3807    155:1387   
 156:1633    157:1290    158:1041    159:2241    160:2571    161:1424   
 162:3518    163:1455    164:1673    165:1641    166:843     167:1718   
 168:3863    169:918     170:4553    171:867     172:3517    173:3113   
 174:1032    175:1170    176:3629    177:4782    178:3551    179:2140   
 180:2359    181:3341    182:3240    183:1921    184:2356    185:19942  
 186:4611    187:3953    188:4034    189:3445    190:9052    191:1459   
 192:10995   193:8771    194:7192    195:5078    196:2995    197:2421   
 198:6009    199:6097    200:7648    201:5832    202:10595   203:10089  
 204:4602    205:3458    206:3836    207:3400    208:4108    209:4808   
 210:4420    211:2442    212:4035    213:3520    214:1104    215:57     
 216:6554    217:2613    218:1289    219:575     220:2048    221:953    
 222:837     223:2037   

End of report


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