Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Dec 16 18:03:10 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 17 Dec, 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:                              917158
    Prefixes after maximum aggregation (per Origin AS):          346713
    Deaggregation factor:                                          2.65
    Unique aggregates announced (without unneeded subnets):      443437
Total ASes present in the Internet Routing Table:                 73876
    Prefixes per ASN:                                             12.41
Origin-only ASes present in the Internet Routing Table:           63414
Origin ASes announcing only one prefix:                           26033
Transit ASes present in the Internet Routing Table:               10462
Transit-only ASes present in the Internet Routing Table:            425
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:              1005
    Number of instances of unregistered ASNs:                      1010
Number of 32-bit ASNs allocated by the RIRs:                      40913
Number of 32-bit ASNs visible in the Routing Table:               33853
Prefixes from 32-bit ASNs in the Routing Table:                  165128
Number of bogon 32-bit ASNs visible in the Routing Table:            16
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            483
Number of addresses announced to Internet:                   3062208256
    Equivalent to 182 /8s, 133 /16s and 151 /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:      311358

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

Prefixes being announced by APNIC Region ASes:                   239734
    Total APNIC prefixes after maximum aggregation:               68403
    APNIC Deaggregation factor:                                    3.50
Prefixes being announced from the APNIC address blocks:          234571
    Unique aggregates announced from the APNIC address blocks:    97351
APNIC Region origin ASes present in the Internet Routing Table:   13173
    APNIC Prefixes per ASN:                                       17.81
APNIC Region origin ASes announcing only one prefix:               3840
APNIC Region transit ASes present in the Internet Routing Table:   1757
Average APNIC Region AS path length visible:                        4.6
    Max APNIC Region AS path length visible:                         31
Number of APNIC region 32-bit ASNs visible in the Routing Table:   8431
Number of APNIC addresses announced to Internet:              773757824
    Equivalent to 46 /8s, 30 /16s and 155 /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:                    267576
    Total ARIN prefixes after maximum aggregation:               121706
    ARIN Deaggregation factor:                                     2.20
Prefixes being announced from the ARIN address blocks:           269183
    Unique aggregates announced from the ARIN address blocks:    129494
ARIN Region origin ASes present in the Internet Routing Table:    19050
    ARIN Prefixes per ASN:                                        14.13
ARIN Region origin ASes announcing only one prefix:                6963
ARIN Region transit ASes present in the Internet Routing Table:    1951
Average ARIN Region AS path length visible:                         3.8
    Max ARIN Region AS path length visible:                          34
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4701
Number of ARIN addresses announced to Internet:              1288689408
    Equivalent to 76 /8s, 207 /16s and 215 /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:                    262985
    Total RIPE prefixes after maximum aggregation:               121762
    RIPE Deaggregation factor:                                     2.16
Prefixes being announced from the RIPE address blocks:           259832
    Unique aggregates announced from the RIPE address blocks:    155382
RIPE Region origin ASes present in the Internet Routing Table:    28121
    RIPE Prefixes per ASN:                                         9.24
RIPE Region origin ASes announcing only one prefix:               11973
RIPE Region transit ASes present in the Internet Routing Table:    3954
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:   10908
Number of RIPE addresses announced to Internet:               715316864
    Equivalent to 42 /8s, 162 /16s and 222 /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:                  117374
    Total LACNIC prefixes after maximum aggregation:              28412
    LACNIC Deaggregation factor:                                   4.13
Prefixes being announced from the LACNIC address blocks:         116686
    Unique aggregates announced from the LACNIC address blocks:   48806
LACNIC Region origin ASes present in the Internet Routing Table:  11006
    LACNIC Prefixes per ASN:                                      10.60
LACNIC Region origin ASes announcing only one prefix:              2662
LACNIC Region transit ASes present in the Internet Routing Table:  2272
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:  8765
Number of LACNIC addresses announced to Internet:             176014336
    Equivalent to 10 /8s, 125 /16s and 196 /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:                  28484
    Total AfriNIC prefixes after maximum aggregation:              5658
    AfriNIC Deaggregation factor:                                  5.03
Prefixes being announced from the AfriNIC address blocks:         36403
    Unique aggregates announced from the AfriNIC address blocks:  12015
AfriNIC Region origin ASes present in the Internet Routing Table:  1710
    AfriNIC Prefixes per ASN:                                     21.29
AfriNIC Region origin ASes announcing only one prefix:              595
AfriNIC Region transit ASes present in the Internet Routing Table:  330
Average AfriNIC Region AS path length visible:                      5.0
    Max AfriNIC Region AS path length visible:                       37
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1048
Number of AfriNIC addresses announced to Internet:            108144128
    Equivalent to 6 /8s, 114 /16s and 38 /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        9165       8884      50  CHINAMOBILE-CN China Mobile Communicati
  7545        5933        786     692  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4883       4192      75  ERX-CERNET-BKB China Education and Rese
  7552        3625       1331      21  VIETEL-AS-AP Viettel Group, VN
  7713        3503       1043      63  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3359       1867      87  VNPT-AS-VN VNPT Corp, VN
  9498        2679        499     237  BBIL-AP BHARTI Airtel Ltd., IN
  4766        2529      11251     594  KIXS-AS-KR Korea Telecom, KR
 24560        2320        849     425  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        7752      10639    2928  AMAZON-02, US
 11492        4548        301     567  CABLEONE, US
  7155        3894        265      33  VIASAT-SP-BACKBONE, US
 22773        3700       3065     329  ASN-CXA-ALL-CCI-22773-RDC, US
  6327        3520       1320      63  SHAW, CA
 16625        3505       1828    2524  AKAMAI-AS, US
   749        3026      50577    2293  DNIC-AS-00749, US
  7018        2600      24142    1571  ATT-INTERNET4, US
396982        2571       3484     366  GOOGLE-CLOUD-PLATFORM, US
 30036        2564        368     378  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        6938       1706     146  UNI2-AS, ES
  9121        6235       1692      17  TTNET, TR
 39891        4487        264      56  ALJAWWALSTC-AS, SA
 20940        4072       3400     183  AKAMAI-ASN1, NL
  8551        3700        374      38  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2941       2290     907  ROSTELECOM-AS, RU
 47331        2717        401    2055  TTNET, TR
  9009        2645        252    1360  M247, RO
 34984        2254        358     610  TELLCOM-AS, TR
  6849        2216        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       10893       3340     593  Uninet S.A. de C.V., MX
 10620        3466        507     852  Telmex Colombia S.A., CO
 11830        2260        369      64  Instituto Costarricense de Electricidad
 13999        2173        356     576  Mega Cable, S.A. de C.V., MX
 28573        1343       2327     257  Claro NXT Telecomunicacoes Ltda, BR
  6503        1294        339     522  Axtel, S.A.B. de C.V., MX
  3816        1291        740     156  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6147        1153        370      22  Telefonica del Peru S.A.A., PE
 11664        1135        184     472  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        1550        537      31  RAYA-AS, EG
 24863        1534        393      21  LINKdotNET-AS, EG
 36992        1362       1520     269  ETISALAT-MISR, EG
 36903        1242        550      99  MT-MPLS, MA
 29571        1013         67      40  ORANGE-COTE-IVOIRE, CI
 36935         883        520      42  Vodafone-, EG
  6713         612       1863      34  IAM-AS, MA
 15399         518         53      42  WANANCHI-, KE
 37342         436         32       1  MOVITEL, MZ
  2018         375        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       10893       3340     593  Uninet S.A. de C.V., MX
  9808        9165       8884      50  CHINAMOBILE-CN China Mobile Communicati
 16509        7752      10639    2928  AMAZON-02, US
 12479        6938       1706     146  UNI2-AS, ES
  9121        6235       1692      17  TTNET, TR
  7545        5933        786     692  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4883       4192      75  ERX-CERNET-BKB China Education and Rese
 11492        4548        301     567  CABLEONE, US
 39891        4487        264      56  ALJAWWALSTC-AS, SA
 20940        4072       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        9165         9115  CHINAMOBILE-CN China Mobile Communications Grou
 12479        6938         6792  UNI2-AS, ES
  9121        6235         6218  TTNET, TR
  7545        5933         5241  TPG-INTERNET-AP TPG Telecom Limited, AU
 16509        7752         4824  AMAZON-02, US
  4538        4883         4808  ERX-CERNET-BKB China Education and Research Net
 39891        4487         4431  ALJAWWALSTC-AS, SA
 11492        4548         3981  CABLEONE, US
 20940        4072         3889  AKAMAI-ASN1, NL
  7155        3894         3861  VIASAT-SP-BACKBONE, US

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

List of Unregistered Origin ASNs (Global)
-----------------------------------------

    Bad AS  Designation  Net Originated      Transit AS  Transit AS Name
     65000  PRIVATE      2.92.64.0/20              8371  VIMPELCOM-NN Vimpelcom, Nizh
     65000  PRIVATE      2.92.80.0/20              8371  VIMPELCOM-NN Vimpelcom, Nizh
    398083  UNALLOCATED  5.133.124.0/24          399587  UT, US
     33123  UNALLOCATED  8.10.69.0/24             11168  SCC, US
     16641  UNALLOCATED  8.10.194.0/24             3356  LEVEL3, US
     16641  UNALLOCATED  8.10.210.0/24             3356  LEVEL3, US
     25674  UNALLOCATED  8.12.76.0/24              3356  LEVEL3, US
     16641  UNALLOCATED  8.12.250.0/24             3356  LEVEL3, US
     25674  UNALLOCATED  8.14.115.0/24             3356  LEVEL3, US
     12169  UNALLOCATED  8.15.207.0/24            32787  PROLEXIC-TECHNOLOGIES-DDOS-M

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

Prefixes from the Special Purpose Address Registry (Global)
-----------------------------------------------------------

Prefix                Origin AS  Description
192.88.99.0/24             6939  HURRICANE, US

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

Advertised Unallocated Addresses
--------------------------------

Unassigned Network     ASN Information  AS Name
23.131.185.0/24      Origin:       174  COGENT-174, US
23.131.185.0/24     Transit:      2516  KDDI KDDI CORPORATION, JP
23.131.186.0/24      Origin:       174  COGENT-174, US
23.131.186.0/24     Transit:      2516  KDDI KDDI CORPORATION, JP
23.131.187.0/24      Origin:       174  COGENT-174, US
23.131.187.0/24     Transit:      2516  KDDI KDDI CORPORATION, JP
23.131.188.0/24      Origin:     46450  PILOT, US
23.131.188.0/24     Transit:      1299  TWELVE99 Arelion, fka Telia Carrier, SE
23.131.190.0/24      Origin:      7018  ATT-INTERNET4, US
23.131.190.0/24     Transit:      1299  TWELVE99 Arelion, fka Telia Carrier, SE

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

Number of prefixes announced per prefix length (Global)
-------------------------------------------------------

 /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
 /7:0        /8:16       /9:13      /10:39      /11:100     /12:295     
/13:587     /14:1202    /15:2046    /16:13500   /17:8317    /18:13917   
/19:25224   /20:44284   /21:52387   /22:110230  /23:98080   /24:546112  
/25:809     /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        5981        6938  UNI2-AS, ES
  9121        5403        6235  TTNET, TR
  8151        4882       10893  Uninet S.A. de C.V., MX
 39891        3542        4487  ALJAWWALSTC-AS, SA
 11492        3455        4548  CABLEONE, US
  6327        3328        3520  SHAW, CA
  8551        3165        3700  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  7155        2983        3894  VIASAT-SP-BACKBONE, US
 22773        2725        3700  ASN-CXA-ALL-CCI-22773-RDC, US
 47331        2345        2717  TTNET, TR

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

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

   1:1655      2:1221      3:168       4:5         5:4067      6:110    
   7:5         8:1577      9:1        11:172      12:1609     13:373    
  14:2371     15:287      16:76       17:373      18:405      20:243    
  21:4        22:188      23:6022     24:2458     25:4        27:2697   
  29:19       31:2491     32:106      34:8        35:96       36:1816   
  37:4579     38:3925     39:819      40:144      41:3917     42:1085   
  43:2316     44:304      45:16426    46:4199     47:379      49:1720   
  50:1935     51:374      52:1527     54:395      55:823      56:8      
  57:80       58:1773     59:1157     60:1007     61:2431     62:2603   
  63:1949     64:5638     65:2328     66:4918     67:3028     68:1362   
  69:4144     70:1257     71:665      72:2997     74:2612     75:1464   
  76:598      77:2331     78:3966     79:2942     80:2046     81:1832   
  82:1489     83:1233     84:1515     85:3787     86:741      87:1924   
  88:2851     89:3493     90:579      91:7600     92:1974     93:2557   
  94:3515     95:4822     96:1316     97:344      98:1173     99:741    
 100:75      101:1056    102:2494    103:30615   104:4590    105:484    
 106:830     107:2545    108:919     109:4296    110:2055    111:3310   
 112:2031    113:1558    114:1610    115:2039    116:1901    117:2470   
 118:2291    119:1910    120:1727    121:1104    122:2581    123:2147   
 124:1577    125:2330    128:1288    129:981     130:968     131:2011   
 132:798     133:400     134:1901    135:295     136:885     137:917    
 138:2581    139:1503    140:1027    141:1483    142:1420    143:1446   
 144:1190    145:352     146:1895    147:1512    148:2282    149:1882   
 150:862     151:1149    152:1826    153:459     154:3812    155:1416   
 156:1625    157:1293    158:1043    159:2238    160:2580    161:1429   
 162:3536    163:1481    164:1685    165:1613    166:831     167:1734   
 168:3873    169:925     170:4577    171:875     172:3535    173:3058   
 174:1028    175:1147    176:3636    177:4765    178:3530    179:2144   
 180:2370    181:3360    182:3265    183:1933    184:2365    185:19989  
 186:4634    187:3933    188:4087    189:3452    190:9039    191:1453   
 192:11012   193:8800    194:7185    195:5085    196:2976    197:2338   
 198:6008    199:6095    200:7735    201:5861    202:10637   203:10042  
 204:4612    205:3508    206:3828    207:3403    208:4115    209:4829   
 210:4428    211:2496    212:4038    213:3554    214:1109    215:55     
 216:6600    217:2638    218:1268    219:576     220:2035    221:955    
 222:842     223:2018   

End of report


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