[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Oct 28 18:03:08 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 29 Oct, 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:                              913431
    Prefixes after maximum aggregation (per Origin AS):          344677
    Deaggregation factor:                                          2.65
    Unique aggregates announced (without unneeded subnets):      440775
Total ASes present in the Internet Routing Table:                 73756
    Prefixes per ASN:                                             12.38
Origin-only ASes present in the Internet Routing Table:           63346
Origin ASes announcing only one prefix:                           26009
Transit ASes present in the Internet Routing Table:               10410
Transit-only ASes present in the Internet Routing Table:            411
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:              1068
    Number of instances of unregistered ASNs:                      1071
Number of 32-bit ASNs allocated by the RIRs:                      40510
Number of 32-bit ASNs visible in the Routing Table:               33589
Prefixes from 32-bit ASNs in the Routing Table:                  162188
Number of bogon 32-bit ASNs visible in the Routing Table:            14
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            527
Number of addresses announced to Internet:                   3064049024
    Equivalent to 182 /8s, 161 /16s and 173 /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:      310290

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

Prefixes being announced by APNIC Region ASes:                   238504
    Total APNIC prefixes after maximum aggregation:               67891
    APNIC Deaggregation factor:                                    3.51
Prefixes being announced from the APNIC address blocks:          233487
    Unique aggregates announced from the APNIC address blocks:    96685
APNIC Region origin ASes present in the Internet Routing Table:   13050
    APNIC Prefixes per ASN:                                       17.89
APNIC Region origin ASes announcing only one prefix:               3749
APNIC Region transit ASes present in the Internet Routing Table:   1763
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:   8296
Number of APNIC addresses announced to Internet:              773644800
    Equivalent to 46 /8s, 28 /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, 131072-151865
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:                    266822
    Total ARIN prefixes after maximum aggregation:               121568
    ARIN Deaggregation factor:                                     2.19
Prefixes being announced from the ARIN address blocks:           268075
    Unique aggregates announced from the ARIN address blocks:    128894
ARIN Region origin ASes present in the Internet Routing Table:    19061
    ARIN Prefixes per ASN:                                        14.06
ARIN Region origin ASes announcing only one prefix:                6959
ARIN Region transit ASes present in the Internet Routing Table:    1924
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:    4661
Number of ARIN addresses announced to Internet:              1289996800
    Equivalent to 76 /8s, 227 /16s and 202 /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:                    261940
    Total RIPE prefixes after maximum aggregation:               120746
    RIPE Deaggregation factor:                                     2.17
Prefixes being announced from the RIPE address blocks:           258812
    Unique aggregates announced from the RIPE address blocks:    154488
RIPE Region origin ASes present in the Internet Routing Table:    28152
    RIPE Prefixes per ASN:                                         9.19
RIPE Region origin ASes announcing only one prefix:               11998
RIPE Region transit ASes present in the Internet Routing Table:    3966
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:   10864
Number of RIPE addresses announced to Internet:               716309888
    Equivalent to 42 /8s, 178 /16s and 5 /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:                  116612
    Total LACNIC prefixes after maximum aggregation:              28105
    LACNIC Deaggregation factor:                                   4.15
Prefixes being announced from the LACNIC address blocks:         116120
    Unique aggregates announced from the LACNIC address blocks:   48367
LACNIC Region origin ASes present in the Internet Routing Table:  10985
    LACNIC Prefixes per ASN:                                      10.57
LACNIC Region origin ASes announcing only one prefix:              2707
LACNIC Region transit ASes present in the Internet Routing Table:  2246
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:  8744
Number of LACNIC addresses announced to Internet:             175875840
    Equivalent to 10 /8s, 123 /16s and 167 /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:                  28485
    Total AfriNIC prefixes after maximum aggregation:              5578
    AfriNIC Deaggregation factor:                                  5.11
Prefixes being announced from the AfriNIC address blocks:         36410
    Unique aggregates announced from the AfriNIC address blocks:  11915
AfriNIC Region origin ASes present in the Internet Routing Table:  1698
    AfriNIC Prefixes per ASN:                                     21.44
AfriNIC Region origin ASes announcing only one prefix:              596
AfriNIC Region transit ASes present in the Internet Routing Table:  326
Average AfriNIC Region AS path length visible:                      5.1
    Max AfriNIC Region AS path length visible:                       30
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1024
Number of AfriNIC addresses announced to Internet:            107920128
    Equivalent to 6 /8s, 110 /16s and 187 /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        9074       8884      50  CHINAMOBILE-CN China Mobile Communicati
  7545        5937        786     695  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4726       4192      75  ERX-CERNET-BKB China Education and Rese
  7552        3614       1330      20  VIETEL-AS-AP Viettel Group, VN
  7713        3500       1042      61  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3390       1877      66  VNPT-AS-VN VNPT Corp, VN
  4766        2533      11252     600  KIXS-AS-KR Korea Telecom, KR
  9498        2491        499     237  BBIL-AP BHARTI Airtel Ltd., IN
 24560        2243        851     409  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd
 45090        2179       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        7449      10588    2892  AMAZON-02, US
 11492        4631        306     502  CABLEONE, US
  7155        3898        265      32  VIASAT-SP-BACKBONE, US
 22773        3733       3057     322  ASN-CXA-ALL-CCI-22773-RDC, US
 16625        3533       1843    2542  AKAMAI-AS, US
  6327        3516       1320      63  SHAW, CA
   749        3029      50727    2287  DNIC-AS-00749, US
  7018        2612      24153    1578  ATT-INTERNET4, US
 30036        2606        372     243  MEDIACOM-ENTERPRISE-BUSINESS, US
396982        2558       3480     349  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        6919       1730     144  UNI2-AS, ES
  9121        6835       1692      17  TTNET, TR
 20940        4108       3400     182  AKAMAI-ASN1, NL
 39891        4010        234      47  ALJAWWALSTC-AS, SA
  8551        3980        374      38  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2950       2290     913  ROSTELECOM-AS, RU
  9009        2625        252    1348  M247, RO
  6849        2439        339      20  UKRTELNET, UA
 34984        2240        357     614  TELLCOM-AS, TR
 47331        2077        322    1580  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       10856       3298     605  Uninet S.A. de C.V., MX
 10620        3471        510     838  Telmex Colombia S.A., CO
 11830        2295        369      64  Instituto Costarricense de Electricidad
 13999        2091        341     548  Mega Cable, S.A. de C.V., MX
 28573        1334       2328     263  Claro NXT Telecomunicacoes Ltda, BR
  6503        1295        338     521  Axtel, S.A.B. de C.V., MX
  3816        1285        722     152  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
 11664        1090        181     467  Techtel LMDS Comunicaciones Interactiva
  6147        1087        369      22  Telefonica del Peru S.A.A., PE
 26615         989       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        1350       1519     270  ETISALAT-MISR, EG
 36903        1248        550      99  MT-MPLS, MA
 29571         992         68      32  ORANGE-COTE-IVOIRE, CI
 36935         815        520      42  Vodafone-, EG
  6713         612       1863      34  IAM-AS, MA
 15399         526         53      42  WANANCHI-, KE
 37342         495         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       10856       3298     605  Uninet S.A. de C.V., MX
  9808        9074       8884      50  CHINAMOBILE-CN China Mobile Communicati
 16509        7449      10588    2892  AMAZON-02, US
 12479        6919       1730     144  UNI2-AS, ES
  9121        6835       1692      17  TTNET, TR
  7545        5937        786     695  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4726       4192      75  ERX-CERNET-BKB China Education and Rese
 11492        4631        306     502  CABLEONE, US
 20940        4108       3400     182  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        9074         9024  CHINAMOBILE-CN China Mobile Communications Grou
  9121        6835         6818  TTNET, TR
 12479        6919         6775  UNI2-AS, ES
  7545        5937         5242  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4726         4651  ERX-CERNET-BKB China Education and Research Net
 16509        7449         4557  AMAZON-02, US
 11492        4631         4129  CABLEONE, US
 39891        4010         3963  ALJAWWALSTC-AS, SA
  8551        3980         3942  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 20940        4108         3926  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
23.141.0.0/24        Origin:    395350  UNASSIGNED
23.141.0.0/24       Transit:     11426  TWC-11426-CAROLINAS, US
23.158.240.0/24      Origin:     13465  UNASSIGNED
23.158.240.0/24     Transit:     33185  HIVE-DATA-CENTER, CA
23.181.240.0/24      Origin:    399613  UNASSIGNED
23.181.240.0/24     Transit:     11992  CENTENNIAL-, PR
24.48.128.0/19       Origin:     29866  OPTICALTEL, US
24.48.128.0/19      Transit:      3257  GTT-BACKBONE GTT, US

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     /12:294     
/13:589     /14:1202    /15:2045    /16:13495   /17:8343    /18:13975   
/19:25200   /20:44384   /21:52211   /22:109833  /23:97775   /24:543132  
/25:785     /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        5981        6835  TTNET, TR
 12479        5926        6919  UNI2-AS, ES
  8151        4819       10856  Uninet S.A. de C.V., MX
 11492        3537        4631  CABLEONE, US
  8551        3444        3980  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  6327        3324        3516  SHAW, CA
 39891        3193        4010  ALJAWWALSTC-AS, SA
  7155        2988        3898  VIASAT-SP-BACKBONE, US
 22773        2767        3733  ASN-CXA-ALL-CCI-22773-RDC, US
  6849        2302        2439  UKRTELNET, UA

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

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

   1:1905      2:1015      3:167       4:5         5:3998      6:116    
   7:5         8:1598      9:1        11:173      12:1621     13:354    
  14:2341     15:277      16:69       17:359      18:346      20:241    
  21:4        22:188      23:5980     24:2466     25:6        27:2710   
  29:19       31:2453     32:94       34:7        35:92       36:1799   
  37:4498     38:3742     39:753      40:159      41:3908     42:1180   
  43:2300     44:297      45:16294    46:4208     47:375      49:1724   
  50:1931     51:244      52:1500     54:398      55:843      56:8      
  57:78       58:1790     59:1164     60:996      61:2404     62:2583   
  63:1968     64:5628     65:2328     66:4853     67:2980     68:1379   
  69:4157     70:1300     71:679      72:2971     74:2652     75:1473   
  76:600      77:2251     78:3964     79:3146     80:2041     81:1823   
  82:1521     83:1218     84:1438     85:3734     86:731      87:1918   
  88:2843     89:3423     90:549      91:7595     92:2068     93:2549   
  94:3546     95:4822     96:1353     97:346      98:1169     99:739    
 100:69      101:1068    102:2336    103:30323   104:4519    105:477    
 106:890     107:2539    108:905     109:4324    110:2003    111:3323   
 112:2050    113:1551    114:1520    115:2023    116:1922    117:2475   
 118:2321    119:1849    120:1731    121:1090    122:2565    123:2117   
 124:1553    125:2183    128:1262    129:986     130:975     131:2015   
 132:846     133:379     134:1889    135:290     136:876     137:900    
 138:2496    139:1515    140:1127    141:1467    142:1402    143:1402   
 144:1203    145:353     146:1872    147:1536    148:2260    149:1830   
 150:875     151:1135    152:1824    153:469     154:3821    155:1428   
 156:1638    157:1302    158:1045    159:2206    160:2562    161:1383   
 162:3503    163:1433    164:1684    165:1637    166:809     167:1718   
 168:3815    169:903     170:4536    171:851     172:3463    173:3109   
 174:1041    175:1155    176:3595    177:4760    178:3528    179:2121   
 180:2341    181:3319    182:3238    183:1942    184:2356    185:19846  
 186:4531    187:3951    188:4047    189:3473    190:8984    191:1432   
 192:10987   193:8755    194:7175    195:5089    196:2976    197:2473   
 198:6008    199:6067    200:7605    201:5818    202:10544   203:10038  
 204:4601    205:3497    206:3902    207:3420    208:4092    209:4800   
 210:4336    211:2437    212:4055    213:3577    214:1082    215:53     
 216:6486    217:2624    218:1292    219:576     220:2045    221:924    
 222:827     223:2014   

End of report


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