[menog] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Jan 6 18:03:10 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 07 Jan, 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:                              918506
    Prefixes after maximum aggregation (per Origin AS):          347602
    Deaggregation factor:                                          2.64
    Unique aggregates announced (without unneeded subnets):      444924
Total ASes present in the Internet Routing Table:                 74024
    Prefixes per ASN:                                             12.41
Origin-only ASes present in the Internet Routing Table:           63539
Origin ASes announcing only one prefix:                           26133
Transit ASes present in the Internet Routing Table:               10485
Transit-only ASes present in the Internet Routing Table:            427
Average AS path length visible in the Internet Routing Table:       4.2
    Max AS path length visible:                                      55
    Max AS path prepend of ASN (265020)                              50
Prefixes from unregistered ASNs in the Routing Table:               987
    Number of instances of unregistered ASNs:                       997
Number of 32-bit ASNs allocated by the RIRs:                      41026
Number of 32-bit ASNs visible in the Routing Table:               33986
Prefixes from 32-bit ASNs in the Routing Table:                  165664
Number of bogon 32-bit ASNs visible in the Routing Table:            29
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            505
Number of addresses announced to Internet:                   3064057600
    Equivalent to 182 /8s, 161 /16s and 207 /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:      312021

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

Prefixes being announced by APNIC Region ASes:                   240104
    Total APNIC prefixes after maximum aggregation:               68678
    APNIC Deaggregation factor:                                    3.50
Prefixes being announced from the APNIC address blocks:          234949
    Unique aggregates announced from the APNIC address blocks:    97638
APNIC Region origin ASes present in the Internet Routing Table:   13227
    APNIC Prefixes per ASN:                                       17.76
APNIC Region origin ASes announcing only one prefix:               3858
APNIC Region transit ASes present in the Internet Routing Table:   1772
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         25
Number of APNIC region 32-bit ASNs visible in the Routing Table:   8485
Number of APNIC addresses announced to Internet:              773793408
    Equivalent to 46 /8s, 31 /16s and 38 /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:                    267526
    Total ARIN prefixes after maximum aggregation:               121772
    ARIN Deaggregation factor:                                     2.20
Prefixes being announced from the ARIN address blocks:           269111
    Unique aggregates announced from the ARIN address blocks:    129742
ARIN Region origin ASes present in the Internet Routing Table:    19061
    ARIN Prefixes per ASN:                                        14.12
ARIN Region origin ASes announcing only one prefix:                6981
ARIN Region transit ASes present in the Internet Routing Table:    1947
Average ARIN Region AS path length visible:                         3.7
    Max ARIN Region AS path length visible:                          34
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4717
Number of ARIN addresses announced to Internet:              1286404864
    Equivalent to 76 /8s, 172 /16s and 251 /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:                    263977
    Total RIPE prefixes after maximum aggregation:               122240
    RIPE Deaggregation factor:                                     2.16
Prefixes being announced from the RIPE address blocks:           260781
    Unique aggregates announced from the RIPE address blocks:    156113
RIPE Region origin ASes present in the Internet Routing Table:    28211
    RIPE Prefixes per ASN:                                         9.24
RIPE Region origin ASes announcing only one prefix:               12029
RIPE Region transit ASes present in the Internet Routing Table:    3975
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:   10963
Number of RIPE addresses announced to Internet:               719491968
    Equivalent to 42 /8s, 226 /16s and 147 /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:                  117339
    Total LACNIC prefixes after maximum aggregation:              28468
    LACNIC Deaggregation factor:                                   4.12
Prefixes being announced from the LACNIC address blocks:         116575
    Unique aggregates announced from the LACNIC address blocks:   48948
LACNIC Region origin ASes present in the Internet Routing Table:  11002
    LACNIC Prefixes per ASN:                                      10.60
LACNIC Region origin ASes announcing only one prefix:              2670
LACNIC Region transit ASes present in the Internet Routing Table:  2272
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:  8768
Number of LACNIC addresses announced to Internet:             176031232
    Equivalent to 10 /8s, 126 /16s and 6 /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:                  28573
    Total AfriNIC prefixes after maximum aggregation:              5696
    AfriNIC Deaggregation factor:                                  5.02
Prefixes being announced from the AfriNIC address blocks:         36585
    Unique aggregates announced from the AfriNIC address blocks:  12072
AfriNIC Region origin ASes present in the Internet Routing Table:  1710
    AfriNIC Prefixes per ASN:                                     21.39
AfriNIC Region origin ASes announcing only one prefix:              595
AfriNIC Region transit ASes present in the Internet Routing Table:  328
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: 1053
Number of AfriNIC addresses announced to Internet:            108043008
    Equivalent to 6 /8s, 112 /16s and 155 /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        9269       8884      50  CHINAMOBILE-CN China Mobile Communicati
  7545        5941        786     700  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4860       4192      75  ERX-CERNET-BKB China Education and Rese
  7552        3630       1331      21  VIETEL-AS-AP Viettel Group, VN
  7713        3507       1043      63  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3375       1874      95  VNPT-AS-VN VNPT Corp, VN
  9498        2687        499     238  BBIL-AP BHARTI Airtel Ltd., IN
  4766        2528      11251     593  KIXS-AS-KR Korea Telecom, KR
 24560        2358        849     436  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        7729      10631    2940  AMAZON-02, US
 11492        4548        301     565  CABLEONE, US
  7155        3894        265      33  VIASAT-SP-BACKBONE, US
 22773        3688       3062     319  ASN-CXA-ALL-CCI-22773-RDC, US
  6327        3520       1320      63  SHAW, CA
 16625        3476       1802    2509  AKAMAI-AS, US
   749        3024      50575    2291  DNIC-AS-00749, US
  7018        2603      24131    1574  ATT-INTERNET4, US
396982        2574       3493     369  GOOGLE-CLOUD-PLATFORM, US
 30036        2572        369     359  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        6955       1706     146  UNI2-AS, ES
  9121        6127       1692      17  TTNET, TR
 39891        4556        268      59  ALJAWWALSTC-AS, SA
 20940        4062       3400     183  AKAMAI-ASN1, NL
  8551        3910        374      38  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2941       2290     908  ROSTELECOM-AS, RU
 47331        2807        411    2115  TTNET, TR
  9009        2643        251    1356  M247, RO
 34984        2255        358     611  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       10937       3332     596  Uninet S.A. de C.V., MX
 10620        3466        507     852  Telmex Colombia S.A., CO
 11830        2262        369      64  Instituto Costarricense de Electricidad
 13999        2200        361     591  Mega Cable, S.A. de C.V., MX
 28573        1346       2328     258  Claro NXT Telecomunicacoes Ltda, BR
  6503        1295        339     517  Axtel, S.A.B. de C.V., MX
  3816        1291        740     156  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6147        1151        370      22  Telefonica del Peru S.A.A., PE
 11664        1135        186     467  Techtel LMDS Comunicaciones Interactiva
 26615         991       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        1538        533      30  RAYA-AS, EG
 24863        1464        393      21  LINKdotNET-AS, EG
 36992        1319       1517     275  ETISALAT-MISR, EG
 36903        1242        550      99  MT-MPLS, MA
 29571        1013         67      43  ORANGE-COTE-IVOIRE, CI
 36935         882        520      42  Vodafone-, EG
  6713         611       1861      34  IAM-AS, MA
 15399         519         53      42  WANANCHI-, KE
 37342         494         32       1  MOVITEL, MZ
  2018         374        319      72  TENET-1, ZA

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       10937       3332     596  Uninet S.A. de C.V., MX
  9808        9269       8884      50  CHINAMOBILE-CN China Mobile Communicati
 16509        7729      10631    2940  AMAZON-02, US
 12479        6955       1706     146  UNI2-AS, ES
  9121        6127       1692      17  TTNET, TR
  7545        5941        786     700  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4860       4192      75  ERX-CERNET-BKB China Education and Rese
 39891        4556        268      59  ALJAWWALSTC-AS, SA
 11492        4548        301     565  CABLEONE, US
 20940        4062       3400     183  AKAMAI-ASN1, NL

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

Global Per AS Maximum Aggregation summary
-----------------------------------------

   ASN  No of nets  Net Savings  Description
  9808        9269         9219  CHINAMOBILE-CN China Mobile Communications Grou
 12479        6955         6809  UNI2-AS, ES
  9121        6127         6110  TTNET, TR
  7545        5941         5241  TPG-INTERNET-AP TPG Telecom Limited, AU
 16509        7729         4789  AMAZON-02, US
  4538        4860         4785  ERX-CERNET-BKB China Education and Research Net
 39891        4556         4497  ALJAWWALSTC-AS, SA
 11492        4548         3983  CABLEONE, US
 20940        4062         3879  AKAMAI-ASN1, NL
  8551        3910         3872  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
    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
23.131.185.0/24      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
23.136.112.0/24      Origin:     54835  UNASSIGNED
23.136.112.0/24     Transit:     21559  OSNET, PR
23.139.232.0/24      Origin:    211619  MAXKO, HR
23.139.232.0/24     Transit:     42864  GIGANET-HU GigaNet Internet Service Prov

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      /11:101     /12:295     
/13:582     /14:1204    /15:2045    /16:13500   /17:8308    /18:13927   
/19:25195   /20:44304   /21:52349   /22:110197  /23:98163   /24:547455  
/25:813     /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        6002        6955  UNI2-AS, ES
  9121        5302        6127  TTNET, TR
  8151        4953       10937  Uninet S.A. de C.V., MX
 39891        3547        4556  ALJAWWALSTC-AS, SA
 11492        3455        4548  CABLEONE, US
  8551        3375        3910  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  6327        3328        3520  SHAW, CA
  7155        2983        3894  VIASAT-SP-BACKBONE, US
 22773        2723        3688  ASN-CXA-ALL-CCI-22773-RDC, US
 47331        2428        2807  TTNET, TR

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

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

   1:1637      2:1241      3:168       4:5         5:4104      6:110    
   7:5         8:1575      9:1        11:172      12:1596     13:368    
  14:2370     15:284      16:76       17:370      18:412      20:243    
  21:4        22:188      23:6046     24:2465     25:4        27:2706   
  29:19       31:2494     32:104      34:8        35:95       36:1839   
  37:4595     38:4004     39:823      40:144      41:3921     42:1058   
  43:2317     44:302      45:16490    46:4217     47:381      49:1725   
  50:1936     51:378      52:1544     54:395      55:798      56:8      
  57:78       58:1746     59:1157     60:1006     61:2427     62:2632   
  63:1935     64:5612     65:2324     66:4896     67:3046     68:1335   
  69:4139     70:1256     71:656      72:2984     74:2592     75:1465   
  76:597      77:2372     78:3960     79:3159     80:2058     81:1834   
  82:1479     83:1229     84:1514     85:3749     86:751      87:1925   
  88:2875     89:3556     90:587      91:7653     92:1984     93:2578   
  94:3531     95:4849     96:1315     97:344      98:1162     99:738    
 100:75      101:1061    102:2506    103:30736   104:4598    105:484    
 106:847     107:2533    108:916     109:4393    110:2047    111:3321   
 112:2029    113:1555    114:1611    115:2047    116:1895    117:2512   
 118:2288    119:1894    120:1749    121:1110    122:2584    123:2146   
 124:1576    125:2335    128:1294    129:1060    130:968     131:2013   
 132:801     133:405     134:1900    135:297     136:891     137:921    
 138:2583    139:1515    140:1036    141:1482    142:1419    143:1434   
 144:1189    145:352     146:1895    147:1543    148:2278    149:1870   
 150:862     151:1136    152:1850    153:477     154:3883    155:1410   
 156:1644    157:1294    158:1047    159:2252    160:2570    161:1432   
 162:3542    163:1488    164:1672    165:1650    166:835     167:1738   
 168:3880    169:919     170:4568    171:889     172:3495    173:3059   
 174:1028    175:1149    176:3718    177:4754    178:3551    179:2146   
 180:2377    181:3387    182:3279    183:1936    184:2350    185:19995  
 186:4615    187:3920    188:4110    189:3432    190:9042    191:1460   
 192:10978   193:8848    194:7214    195:5095    196:2982    197:2403   
 198:5993    199:6086    200:7721    201:5875    202:10636   203:10050  
 204:4600    205:3503    206:3856    207:3403    208:4102    209:4812   
 210:4431    211:2497    212:4093    213:3547    214:1103    215:55     
 216:6579    217:2636    218:1276    219:575     220:2027    221:965    
 222:842     223:2007   

End of report


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