[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Mar 3 18:03:30 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 04 Mar, 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:                              915877
    Prefixes after maximum aggregation (per Origin AS):          346961
    Deaggregation factor:                                          2.64
    Unique aggregates announced (without unneeded subnets):      446240
Total ASes present in the Internet Routing Table:                 74173
    Prefixes per ASN:                                             12.35
Origin-only ASes present in the Internet Routing Table:           63640
Origin ASes announcing only one prefix:                           26126
Transit ASes present in the Internet Routing Table:               10533
Transit-only ASes present in the Internet Routing Table:            445
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:              1039
    Number of instances of unregistered ASNs:                      1055
Number of 32-bit ASNs allocated by the RIRs:                      41345
Number of 32-bit ASNs visible in the Routing Table:               34262
Prefixes from 32-bit ASNs in the Routing Table:                  167731
Number of bogon 32-bit ASNs visible in the Routing Table:            39
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            532
Number of addresses announced to Internet:                   3063466752
    Equivalent to 182 /8s, 152 /16s and 203 /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:      306375

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

Prefixes being announced by APNIC Region ASes:                   242621
    Total APNIC prefixes after maximum aggregation:               69112
    APNIC Deaggregation factor:                                    3.51
Prefixes being announced from the APNIC address blocks:          237131
    Unique aggregates announced from the APNIC address blocks:    97910
APNIC Region origin ASes present in the Internet Routing Table:   13342
    APNIC Prefixes per ASN:                                       17.77
APNIC Region origin ASes announcing only one prefix:               3892
APNIC Region transit ASes present in the Internet Routing Table:   1801
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:   8617
Number of APNIC addresses announced to Internet:              773691776
    Equivalent to 46 /8s, 29 /16s and 153 /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:                    267916
    Total ARIN prefixes after maximum aggregation:               121637
    ARIN Deaggregation factor:                                     2.20
Prefixes being announced from the ARIN address blocks:           270075
    Unique aggregates announced from the ARIN address blocks:    130267
ARIN Region origin ASes present in the Internet Routing Table:    19058
    ARIN Prefixes per ASN:                                        14.17
ARIN Region origin ASes announcing only one prefix:                6966
ARIN Region transit ASes present in the Internet Routing Table:    1960
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:    4745
Number of ARIN addresses announced to Internet:              1286859264
    Equivalent to 76 /8s, 179 /16s and 234 /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:                    257386
    Total RIPE prefixes after maximum aggregation:               121252
    RIPE Deaggregation factor:                                     2.12
Prefixes being announced from the RIPE address blocks:           253796
    Unique aggregates announced from the RIPE address blocks:    156624
RIPE Region origin ASes present in the Internet Routing Table:    28232
    RIPE Prefixes per ASN:                                         8.99
RIPE Region origin ASes announcing only one prefix:               12007
RIPE Region transit ASes present in the Internet Routing Table:    3949
Average RIPE Region AS path length visible:                         4.3
    Max RIPE Region AS path length visible:                          38
Number of RIPE region 32-bit ASNs visible in the Routing Table:   11050
Number of RIPE addresses announced to Internet:               718465920
    Equivalent to 42 /8s, 210 /16s and 235 /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:                  117790
    Total LACNIC prefixes after maximum aggregation:              28486
    LACNIC Deaggregation factor:                                   4.14
Prefixes being announced from the LACNIC address blocks:         117129
    Unique aggregates announced from the LACNIC address blocks:   48798
LACNIC Region origin ASes present in the Internet Routing Table:  10981
    LACNIC Prefixes per ASN:                                      10.67
LACNIC Region origin ASes announcing only one prefix:              2664
LACNIC Region transit ASes present in the Internet Routing Table:  2277
Average LACNIC Region AS path length visible:                       4.9
    Max LACNIC Region AS path length visible:                        55
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8779
Number of LACNIC addresses announced to Internet:             176559104
    Equivalent to 10 /8s, 134 /16s and 20 /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:                  29125
    Total AfriNIC prefixes after maximum aggregation:              5708
    AfriNIC Deaggregation factor:                                  5.10
Prefixes being announced from the AfriNIC address blocks:         37214
    Unique aggregates announced from the AfriNIC address blocks:  12218
AfriNIC Region origin ASes present in the Internet Routing Table:  1726
    AfriNIC Prefixes per ASN:                                     21.56
AfriNIC Region origin ASes announcing only one prefix:              597
AfriNIC Region transit ASes present in the Internet Routing Table:  334
Average AfriNIC Region AS path length visible:                      4.9
    Max AfriNIC Region AS path length visible:                       30
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1071
Number of AfriNIC addresses announced to Internet:            107562240
    Equivalent to 6 /8s, 105 /16s and 69 /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        9463       8884      51  CHINAMOBILE-CN China Mobile Communicati
  7545        5797        786     692  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4862       4192      75  ERX-CERNET-BKB China Education and Rese
  7552        3680       1331      21  VIETEL-AS-AP Viettel Group, VN
  7713        3533       1043      65  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3374       1874      95  VNPT-AS-VN VNPT Corp, VN
  9498        2795        499     238  BBIL-AP BHARTI Airtel Ltd., IN
  4766        2553      11251     591  KIXS-AS-KR Korea Telecom, KR
 24560        2358        836     440  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd
 45090        2184       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        8040      10755    2872  AMAZON-02, US
 11492        4517        299     627  CABLEONE, US
  7155        3958        270      43  VIASAT-SP-BACKBONE, US
 22773        3652       3064     290  ASN-CXA-ALL-CCI-22773-RDC, US
  6327        3504       1320      64  SHAW, CA
 16625        3305       1661    2430  AKAMAI-AS, US
   749        3033      50571    2300  DNIC-AS-00749, US
396982        2620       3586     356  GOOGLE-CLOUD-PLATFORM, US
  7018        2565      24120    1572  ATT-INTERNET4, US
 30036        2540        364     392  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        7064       1706     146  UNI2-AS, ES
 39891        4561        269      58  ALJAWWALSTC-AS, SA
 20940        4056       3399     175  AKAMAI-ASN1, NL
  8551        3900        370      37  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2950       2292     911  ROSTELECOM-AS, RU
  9009        2657        252    1378  M247, RO
 34984        2264        359     608  TELLCOM-AS, TR
  6849        2164        339      19  UKRTELNET, UA
 58224        1847        949     546  TCI, IR
 13188        1607        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       11223       3349     585  Uninet S.A. de C.V., MX
 10620        3466        504     876  Telmex Colombia S.A., CO
 13999        2264        369     603  Mega Cable, S.A. de C.V., MX
 11830        2261        369      64  Instituto Costarricense de Electricidad
 28573        1341       2325     254  Claro NXT Telecomunicacoes Ltda, BR
  3816        1298        757     159  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6503        1298        339     513  Axtel, S.A.B. de C.V., MX
  6147        1128        370      22  Telefonica del Peru S.A.A., PE
 11664        1098        180     458  Techtel LMDS Comunicaciones Interactiva
 26615        1026       2498      45  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        1551        393      19  LINKdotNET-AS, EG
 24835        1528        533      30  RAYA-AS, EG
 36992        1345       1517     276  ETISALAT-MISR, EG
 36903        1242        550      99  MT-MPLS, MA
 29571        1010         67      53  ORANGE-COTE-IVOIRE, CI
 36935         854        520      42  Vodafone-, EG
  6713         549       1861      34  IAM-AS, MA
 15399         527         54      46  WANANCHI-, KE
 24757         493         73       5  EthioNet-AS, ET
 37342         493         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       11223       3349     585  Uninet S.A. de C.V., MX
  9808        9463       8884      51  CHINAMOBILE-CN China Mobile Communicati
 16509        8040      10755    2872  AMAZON-02, US
 12479        7064       1706     146  UNI2-AS, ES
  7545        5797        786     692  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4862       4192      75  ERX-CERNET-BKB China Education and Rese
 39891        4561        269      58  ALJAWWALSTC-AS, SA
 11492        4517        299     627  CABLEONE, US
 20940        4056       3399     175  AKAMAI-ASN1, NL
  7155        3958        270      43  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        9463         9412  CHINAMOBILE-CN China Mobile Communications Grou
 12479        7064         6918  UNI2-AS, ES
 16509        8040         5168  AMAZON-02, US
  7545        5797         5105  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4862         4787  ERX-CERNET-BKB China Education and Research Net
 39891        4561         4503  ALJAWWALSTC-AS, SA
  7155        3958         3915  VIASAT-SP-BACKBONE, US
 11492        4517         3890  CABLEONE, US
 20940        4056         3881  AKAMAI-ASN1, NL
  8551        3900         3863  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo

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
      3507  UNALLOCATED  5.105.166.0/24          213035  AS-SERVERION Serverion B.V.,
     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
     16641  UNALLOCATED  8.12.250.0/24             3356  LEVEL3, US
     12169  UNALLOCATED  8.15.207.0/24            32787  PROLEXIC-TECHNOLOGIES-DDOS-M
     53775  UNALLOCATED  8.20.88.0/24              7029  WINDSTREAM, US
     62828  UNALLOCATED  8.21.130.0/24             3356  LEVEL3, US
      1618  UNALLOCATED  8.21.143.0/24           136796  CL-JP-AS CORELINK JAPAN, JP
    393266  UNALLOCATED  8.23.52.0/24             46887  LIGHTOWER, 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
23.131.185.0/24      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:       174  COGENT-174, US
23.131.188.0/24     Transit:      2516  KDDI KDDI CORPORATION, JP
23.136.112.0/24      Origin:     54835  UNASSIGNED
23.136.112.0/24     Transit:     21559  OSNET, PR

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      /11:103     /12:299     
/13:580     /14:1202    /15:2040    /16:13479   /17:8283    /18:13847   
/19:25192   /20:44372   /21:51820   /22:109962  /23:97531   /24:546277  
/25:822     /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        6121        7064  UNI2-AS, ES
  8151        5224       11223  Uninet S.A. de C.V., MX
 39891        3552        4561  ALJAWWALSTC-AS, SA
 11492        3433        4517  CABLEONE, US
  8551        3372        3900  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  6327        3312        3504  SHAW, CA
  7155        3035        3958  VIASAT-SP-BACKBONE, US
 22773        2697        3652  ASN-CXA-ALL-CCI-22773-RDC, US
 30036        2197        2540  MEDIACOM-ENTERPRISE-BUSINESS, US
 10620        2020        3466  Telmex Colombia S.A., CO

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

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

   1:1683      2:1241      3:168       4:5         5:4335      6:115    
   7:6         8:1555      9:1        11:172      12:1583     13:391    
  14:2337     15:293      16:111      17:365      18:398      20:249    
  21:4        22:188      23:6108     24:2489     25:4        27:2525   
  29:19       31:2505     32:107      34:8        35:106      36:1919   
  37:4604     38:4281     39:865      40:152      41:4031     42:1094   
  43:2343     44:305      45:16415    46:4175     47:381      49:1747   
  50:1830     51:386      52:1584     54:386      55:862      56:8      
  57:90       58:1746     59:1170     60:981      61:2436     62:2640   
  63:1939     64:5627     65:2322     66:4933     67:3030     68:1353   
  69:4143     70:1270     71:664      72:2976     74:2600     75:1458   
  76:605      77:2417     78:1851     79:3174     80:2059     81:1733   
  82:1504     83:1236     84:1532     85:3015     86:757      87:1955   
  88:1247     89:3623     90:610      91:7674     92:2012     93:2585   
  94:3507     95:3955     96:1328     97:331      98:1165     99:745    
 100:77      101:1061    102:2627    103:31048   104:4588    105:483    
 106:915     107:2541    108:932     109:4391    110:2100    111:3319   
 112:2045    113:1552    114:1628    115:2043    116:1919    117:2567   
 118:2276    119:1964    120:1771    121:1115    122:2591    123:2186   
 124:1586    125:2435    128:1328    129:1071    130:996     131:2011   
 132:790     133:421     134:1907    135:299     136:863     137:939    
 138:2581    139:1547    140:1198    141:1467    142:1428    143:1485   
 144:1209    145:356     146:1906    147:1559    148:2245    149:1929   
 150:919     151:1147    152:1846    153:487     154:4243    155:1429   
 156:1674    157:1292    158:1021    159:2266    160:2564    161:1444   
 162:3549    163:1495    164:1598    165:1678    166:856     167:1723   
 168:3847    169:924     170:4585    171:900     172:3505    173:2969   
 174:1015    175:1164    176:3741    177:4747    178:3614    179:2185   
 180:2385    181:3417    182:3428    183:1936    184:2351    185:20075  
 186:4679    187:4017    188:4148    189:3637    190:9108    191:1500   
 192:10962   193:8825    194:7230    195:5126    196:3065    197:2392   
 198:5958    199:6092    200:7774    201:5879    202:10697   203:10174  
 204:4601    205:3526    206:3860    207:3442    208:4081    209:4865   
 210:4464    211:2499    212:4096    213:3560    214:1096    215:55     
 216:6590    217:2650    218:1287    219:582     220:2018    221:972    
 222:872     223:2147   

End of report


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