[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Nov 4 18:03:11 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 05 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:                              914187
    Prefixes after maximum aggregation (per Origin AS):          345210
    Deaggregation factor:                                          2.65
    Unique aggregates announced (without unneeded subnets):      441304
Total ASes present in the Internet Routing Table:                 73782
    Prefixes per ASN:                                             12.39
Origin-only ASes present in the Internet Routing Table:           63404
Origin ASes announcing only one prefix:                           26064
Transit ASes present in the Internet Routing Table:               10378
Transit-only ASes present in the Internet Routing Table:            408
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:              1006
    Number of instances of unregistered ASNs:                      1008
Number of 32-bit ASNs allocated by the RIRs:                      40572
Number of 32-bit ASNs visible in the Routing Table:               33622
Prefixes from 32-bit ASNs in the Routing Table:                  162808
Number of bogon 32-bit ASNs visible in the Routing Table:            12
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            510
Number of addresses announced to Internet:                   3064630528
    Equivalent to 182 /8s, 170 /16s and 141 /24s
    Percentage of available address space announced:               82.8
    Percentage of allocated address space announced:               82.8
    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:      310253

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

Prefixes being announced by APNIC Region ASes:                   238910
    Total APNIC prefixes after maximum aggregation:               68007
    APNIC Deaggregation factor:                                    3.51
Prefixes being announced from the APNIC address blocks:          233889
    Unique aggregates announced from the APNIC address blocks:    96892
APNIC Region origin ASes present in the Internet Routing Table:   13077
    APNIC Prefixes per ASN:                                       17.89
APNIC Region origin ASes announcing only one prefix:               3778
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:                         33
Number of APNIC region 32-bit ASNs visible in the Routing Table:   8324
Number of APNIC addresses announced to Internet:              773861504
    Equivalent to 46 /8s, 32 /16s and 48 /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:                    267032
    Total ARIN prefixes after maximum aggregation:               121841
    ARIN Deaggregation factor:                                     2.19
Prefixes being announced from the ARIN address blocks:           268396
    Unique aggregates announced from the ARIN address blocks:    129002
ARIN Region origin ASes present in the Internet Routing Table:    19070
    ARIN Prefixes per ASN:                                        14.07
ARIN Region origin ASes announcing only one prefix:                6977
ARIN Region transit ASes present in the Internet Routing Table:    1928
Average ARIN Region AS path length visible:                         3.8
    Max ARIN Region AS path length visible:                          35
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4667
Number of ARIN addresses announced to Internet:              1290101248
    Equivalent to 76 /8s, 229 /16s and 98 /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:                    261799
    Total RIPE prefixes after maximum aggregation:               120887
    RIPE Deaggregation factor:                                     2.17
Prefixes being announced from the RIPE address blocks:           258585
    Unique aggregates announced from the RIPE address blocks:    154650
RIPE Region origin ASes present in the Internet Routing Table:    28150
    RIPE Prefixes per ASN:                                         9.19
RIPE Region origin ASes announcing only one prefix:               12004
RIPE Region transit ASes present in the Internet Routing Table:    3954
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:   10852
Number of RIPE addresses announced to Internet:               716490624
    Equivalent to 42 /8s, 180 /16s and 199 /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:                  116846
    Total LACNIC prefixes after maximum aggregation:              28114
    LACNIC Deaggregation factor:                                   4.16
Prefixes being announced from the LACNIC address blocks:         116298
    Unique aggregates announced from the LACNIC address blocks:   48449
LACNIC Region origin ASes present in the Internet Routing Table:  10985
    LACNIC Prefixes per ASN:                                      10.59
LACNIC Region origin ASes announcing only one prefix:              2708
LACNIC Region transit ASes present in the Internet Routing Table:  2229
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:  8750
Number of LACNIC addresses announced to Internet:             175917056
    Equivalent to 10 /8s, 124 /16s and 72 /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:                  28594
    Total AfriNIC prefixes after maximum aggregation:              5604
    AfriNIC Deaggregation factor:                                  5.10
Prefixes being announced from the AfriNIC address blocks:         36509
    Unique aggregates announced from the AfriNIC address blocks:  11890
AfriNIC Region origin ASes present in the Internet Routing Table:  1702
    AfriNIC Prefixes per ASN:                                     21.45
AfriNIC Region origin ASes announcing only one prefix:              597
AfriNIC Region transit ASes present in the Internet Routing Table:  332
Average AfriNIC Region AS path length visible:                      5.1
    Max AfriNIC Region AS path length visible:                       31
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1029
Number of AfriNIC addresses announced to Internet:            107975168
    Equivalent to 6 /8s, 111 /16s and 146 /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        9092       8884      50  CHINAMOBILE-CN China Mobile Communicati
  7545        5942        786     696  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4879       4192      75  ERX-CERNET-BKB China Education and Rese
  7552        3616       1330      20  VIETEL-AS-AP Viettel Group, VN
  7713        3498       1043      62  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3397       1877      66  VNPT-AS-VN VNPT Corp, VN
  4766        2531      11252     600  KIXS-AS-KR Korea Telecom, KR
  9498        2498        499     237  BBIL-AP BHARTI Airtel Ltd., IN
 24560        2259        850     411  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        7561      10612    2897  AMAZON-02, US
 11492        4585        304     549  CABLEONE, US
  7155        3898        265      32  VIASAT-SP-BACKBONE, US
 22773        3759       3061     341  ASN-CXA-ALL-CCI-22773-RDC, US
 16625        3562       1864    2548  AKAMAI-AS, US
  6327        3517       1320      63  SHAW, CA
   749        3029      50727    2287  DNIC-AS-00749, US
  7018        2609      24057    1569  ATT-INTERNET4, US
 30036        2599        371     285  MEDIACOM-ENTERPRISE-BUSINESS, US
396982        2560       3480     351  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        6920       1730     144  UNI2-AS, ES
  9121        6841       1692      17  TTNET, TR
 20940        4115       3400     183  AKAMAI-ASN1, NL
 39891        4010        234      47  ALJAWWALSTC-AS, SA
  8551        3981        374      38  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2956       2290     913  ROSTELECOM-AS, RU
  9009        2628        252    1351  M247, RO
  6849        2331        339      20  UKRTELNET, UA
 34984        2241        357     615  TELLCOM-AS, TR
 47331        2078        323    1581  TTNET, TR

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       10785       3345     604  Uninet S.A. de C.V., MX
 10620        3472        510     839  Telmex Colombia S.A., CO
 11830        2300        369      64  Instituto Costarricense de Electricidad
 13999        2099        341     544  Mega Cable, S.A. de C.V., MX
 28573        1335       2328     261  Claro NXT Telecomunicacoes Ltda, BR
  6503        1295        338     521  Axtel, S.A.B. de C.V., MX
  3816        1286        722     153  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
 11664        1110        182     471  Techtel LMDS Comunicaciones Interactiva
  6147        1083        369      22  Telefonica del Peru S.A.A., PE
 26615         992       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
 24863        1575        393      21  LINKdotNET-AS, EG
 24835        1545        521      31  RAYA-AS, EG
 36992        1354       1520     270  ETISALAT-MISR, EG
 36903        1242        550      99  MT-MPLS, MA
 29571         992         68      32  ORANGE-COTE-IVOIRE, CI
 36935         831        520      42  Vodafone-, EG
  6713         612       1863      34  IAM-AS, MA
 15399         526         53      42  WANANCHI-, KE
 37342         490         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       10785       3345     604  Uninet S.A. de C.V., MX
  9808        9092       8884      50  CHINAMOBILE-CN China Mobile Communicati
 16509        7561      10612    2897  AMAZON-02, US
 12479        6920       1730     144  UNI2-AS, ES
  9121        6841       1692      17  TTNET, TR
  7545        5942        786     696  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4879       4192      75  ERX-CERNET-BKB China Education and Rese
 11492        4585        304     549  CABLEONE, US
 20940        4115       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        9092         9042  CHINAMOBILE-CN China Mobile Communications Grou
  9121        6841         6824  TTNET, TR
 12479        6920         6776  UNI2-AS, ES
  7545        5942         5246  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4879         4804  ERX-CERNET-BKB China Education and Research Net
 16509        7561         4664  AMAZON-02, US
 11492        4585         4036  CABLEONE, US
 39891        4010         3963  ALJAWWALSTC-AS, SA
  8551        3981         3943  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 20940        4115         3932  AKAMAI-ASN1, NL

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
    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
     25674  UNALLOCATED  8.19.146.0/24             3356  LEVEL3, US
     53775  UNALLOCATED  8.20.88.0/24              7029  WINDSTREAM, 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
23.136.112.0/24      Origin:     54835  UNASSIGNED
23.136.112.0/24     Transit:     21559  OSNET, PR
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
23.181.240.0/24      Origin:    399613  UNASSIGNED
23.181.240.0/24     Transit:     11992  CENTENNIAL-, PR
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       /9:13      /10:39      /11:100     /12:295     
/13:588     /14:1198    /15:2047    /16:13533   /17:8355    /18:13983   
/19:25166   /20:44387   /21:52270   /22:109998  /23:97774   /24:543619  
/25:806     /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
  9121        5987        6841  TTNET, TR
 12479        5925        6920  UNI2-AS, ES
  8151        4738       10785  Uninet S.A. de C.V., MX
 11492        3492        4585  CABLEONE, US
  8551        3445        3981  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  6327        3325        3517  SHAW, CA
 39891        3193        4010  ALJAWWALSTC-AS, SA
  7155        2987        3898  VIASAT-SP-BACKBONE, US
 22773        2780        3759  ASN-CXA-ALL-CCI-22773-RDC, US
 30036        2255        2599  MEDIACOM-ENTERPRISE-BUSINESS, US

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

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

   1:1907      2:1017      3:166       4:5         5:4013      6:117    
   7:5         8:1597      9:1        11:173      12:1619     13:350    
  14:2382     15:280      16:69       17:360      18:373      20:236    
  21:4        22:188      23:6002     24:2454     25:6        27:2703   
  29:19       31:2467     32:93       34:7        35:95       36:1794   
  37:4498     38:3750     39:770      40:144      41:3931     42:1183   
  43:2252     44:301      45:16308    46:4201     47:375      49:1720   
  50:1924     51:244      52:1496     54:398      55:846      56:8      
  57:78       58:1790     59:1163     60:1002     61:2409     62:2590   
  63:1958     64:5622     65:2324     66:4831     67:2995     68:1379   
  69:4146     70:1297     71:679      72:2998     74:2648     75:1474   
  76:600      77:2226     78:3961     79:3149     80:2047     81:1830   
  82:1477     83:1216     84:1449     85:3733     86:730      87:1917   
  88:2842     89:3402     90:550      91:7593     92:2040     93:2555   
  94:3517     95:4810     96:1349     97:350      98:1172     99:739    
 100:69      101:1068    102:2378    103:30393   104:4555    105:480    
 106:894     107:2553    108:911     109:4316    110:2020    111:3319   
 112:2050    113:1560    114:1530    115:2029    116:1901    117:2474   
 118:2325    119:1851    120:1707    121:1092    122:2568    123:2115   
 124:1553    125:2180    128:1261    129:982     130:976     131:2022   
 132:845     133:378     134:1911    135:291     136:880     137:907    
 138:2508    139:1516    140:1120    141:1464    142:1398    143:1404   
 144:1196    145:354     146:1879    147:1533    148:2265    149:1831   
 150:874     151:1139    152:1831    153:453     154:3829    155:1438   
 156:1621    157:1297    158:1040    159:2202    160:2566    161:1385   
 162:3521    163:1436    164:1688    165:1636    166:823     167:1714   
 168:3855    169:903     170:4546    171:851     172:3479    173:3110   
 174:1032    175:1161    176:3602    177:4793    178:3514    179:2131   
 180:2348    181:3361    182:3238    183:1932    184:2361    185:19878  
 186:4548    187:3986    188:3977    189:3447    190:9052    191:1434   
 192:11015   193:8760    194:7175    195:5087    196:2983    197:2470   
 198:6005    199:6068    200:7613    201:5798    202:10557   203:10053  
 204:4598    205:3493    206:3921    207:3419    208:4092    209:4788   
 210:4395    211:2441    212:4038    213:3507    214:1100    215:53     
 216:6536    217:2630    218:1289    219:573     220:2051    221:925    
 222:839     223:2015   

End of report


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