[menog] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Oct 7 18:02:59 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 08 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:                              910829
    Prefixes after maximum aggregation (per Origin AS):          343738
    Deaggregation factor:                                          2.65
    Unique aggregates announced (without unneeded subnets):      440115
Total ASes present in the Internet Routing Table:                 73730
    Prefixes per ASN:                                             12.35
Origin-only ASes present in the Internet Routing Table:           63297
Origin ASes announcing only one prefix:                           26022
Transit ASes present in the Internet Routing Table:               10433
Transit-only ASes present in the Internet Routing Table:            407
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:              1036
    Number of instances of unregistered ASNs:                      1038
Number of 32-bit ASNs allocated by the RIRs:                      40356
Number of 32-bit ASNs visible in the Routing Table:               33473
Prefixes from 32-bit ASNs in the Routing Table:                  161004
Number of bogon 32-bit ASNs visible in the Routing Table:            15
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            496
Number of addresses announced to Internet:                   3065356800
    Equivalent to 182 /8s, 181 /16s and 162 /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:      308908

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

Prefixes being announced by APNIC Region ASes:                   238083
    Total APNIC prefixes after maximum aggregation:               67736
    APNIC Deaggregation factor:                                    3.51
Prefixes being announced from the APNIC address blocks:          232954
    Unique aggregates announced from the APNIC address blocks:    96464
APNIC Region origin ASes present in the Internet Routing Table:   13014
    APNIC Prefixes per ASN:                                       17.90
APNIC Region origin ASes announcing only one prefix:               3756
APNIC Region transit ASes present in the Internet Routing Table:   1758
Average APNIC Region AS path length visible:                        4.6
    Max APNIC Region AS path length visible:                         27
Number of APNIC region 32-bit ASNs visible in the Routing Table:   8252
Number of APNIC addresses announced to Internet:              773836672
    Equivalent to 46 /8s, 31 /16s and 207 /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:                    265816
    Total ARIN prefixes after maximum aggregation:               121572
    ARIN Deaggregation factor:                                     2.19
Prefixes being announced from the ARIN address blocks:           266788
    Unique aggregates announced from the ARIN address blocks:    128517
ARIN Region origin ASes present in the Internet Routing Table:    19068
    ARIN Prefixes per ASN:                                        13.99
ARIN Region origin ASes announcing only one prefix:                6941
ARIN Region transit ASes present in the Internet Routing Table:    1926
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:    4627
Number of ARIN addresses announced to Internet:              1290885120
    Equivalent to 76 /8s, 241 /16s and 88 /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:                    261141
    Total RIPE prefixes after maximum aggregation:               120009
    RIPE Deaggregation factor:                                     2.18
Prefixes being announced from the RIPE address blocks:           258177
    Unique aggregates announced from the RIPE address blocks:    153698
RIPE Region origin ASes present in the Internet Routing Table:    28177
    RIPE Prefixes per ASN:                                         9.16
RIPE Region origin ASes announcing only one prefix:               12023
RIPE Region transit ASes present in the Internet Routing Table:    3990
Average RIPE Region AS path length visible:                         4.2
    Max RIPE Region AS path length visible:                          35
Number of RIPE region 32-bit ASNs visible in the Routing Table:   10829
Number of RIPE addresses announced to Internet:               716507264
    Equivalent to 42 /8s, 181 /16s and 8 /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:                  116340
    Total LACNIC prefixes after maximum aggregation:              28059
    LACNIC Deaggregation factor:                                   4.15
Prefixes being announced from the LACNIC address blocks:         115969
    Unique aggregates announced from the LACNIC address blocks:   49051
LACNIC Region origin ASes present in the Internet Routing Table:  10985
    LACNIC Prefixes per ASN:                                      10.56
LACNIC Region origin ASes announcing only one prefix:              2704
LACNIC Region transit ASes present in the Internet Routing Table:  2247
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:  8742
Number of LACNIC addresses announced to Internet:             175967232
    Equivalent to 10 /8s, 125 /16s and 12 /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:                  28413
    Total AfriNIC prefixes after maximum aggregation:              5585
    AfriNIC Deaggregation factor:                                  5.09
Prefixes being announced from the AfriNIC address blocks:         36445
    Unique aggregates announced from the AfriNIC address blocks:  11970
AfriNIC Region origin ASes present in the Internet Routing Table:  1692
    AfriNIC Prefixes per ASN:                                     21.54
AfriNIC Region origin ASes announcing only one prefix:              598
AfriNIC Region transit ASes present in the Internet Routing Table:  325
Average AfriNIC Region AS path length visible:                      5.1
    Max AfriNIC Region AS path length visible:                       37
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1023
Number of AfriNIC addresses announced to Internet:            107880192
    Equivalent to 6 /8s, 110 /16s and 31 /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        9070       8884      50  CHINAMOBILE-CN China Mobile Communicati
  7545        5927        786     695  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4722       4192      75  ERX-CERNET-BKB China Education and Rese
  7552        3584       1330      20  VIETEL-AS-AP Viettel Group, VN
  7713        3500       1042      61  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3389       1877      67  VNPT-AS-VN VNPT Corp, VN
  4766        2466      11252     600  KIXS-AS-KR Korea Telecom, KR
  9498        2456        499     237  BBIL-AP BHARTI Airtel Ltd., IN
 24560        2233        851     412  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd
 45090        2178       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        7302      10555    2844  AMAZON-02, US
 11492        4566        302     609  CABLEONE, US
  7155        3898        265      32  VIASAT-SP-BACKBONE, US
 22773        3781       3066     356  ASN-CXA-ALL-CCI-22773-RDC, US
 16625        3550       1850    2545  AKAMAI-AS, US
  6327        3498       1319      64  SHAW, CA
   749        3030      50696    2297  DNIC-AS-00749, US
 30036        2600        367     264  MEDIACOM-ENTERPRISE-BUSINESS, US
396982        2552       3479     345  GOOGLE-CLOUD-PLATFORM, US
   209        2346       4934     391  CENTURYLINK-US-LEGACY-QWEST, 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
  9121        6901       1692      17  TTNET, TR
 12479        6876       1730     144  UNI2-AS, ES
 20940        4107       3400     184  AKAMAI-ASN1, NL
 39891        4010        234      47  ALJAWWALSTC-AS, SA
  8551        3989        374      38  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2946       2290     913  ROSTELECOM-AS, RU
  9009        2618        252    1344  M247, RO
  6849        2534        339      20  UKRTELNET, UA
 34984        2252        358     626  TELLCOM-AS, TR
 47331        2006        314    1516  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       10847       3334     593  Uninet S.A. de C.V., MX
 10620        3472        510     841  Telmex Colombia S.A., CO
 11830        2303        369      64  Instituto Costarricense de Electricidad
 13999        2051        334     531  Mega Cable, S.A. de C.V., MX
 28573        1347       2328     264  Claro NXT Telecomunicacoes Ltda, BR
  6503        1288        338     520  Axtel, S.A.B. de C.V., MX
  3816        1279        712     149  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6147        1146        369      22  Telefonica del Peru S.A.A., PE
 11664        1071        180     462  Techtel LMDS Comunicaciones Interactiva
 26615         987       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        1567        393      21  LINKdotNET-AS, EG
 24835        1512        521      31  RAYA-AS, EG
 36992        1345       1519     270  ETISALAT-MISR, EG
 36903        1268        550      99  MT-MPLS, MA
 29571        1006         68      32  ORANGE-COTE-IVOIRE, CI
 36935         812        520      42  Vodafone-, EG
  6713         611       1863      34  IAM-AS, MA
 15399         524         53      42  WANANCHI-, KE
 37342         488         32       1  MOVITEL, MZ
 23889         402        232      16  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       10847       3334     593  Uninet S.A. de C.V., MX
  9808        9070       8884      50  CHINAMOBILE-CN China Mobile Communicati
 16509        7302      10555    2844  AMAZON-02, US
  9121        6901       1692      17  TTNET, TR
 12479        6876       1730     144  UNI2-AS, ES
  7545        5927        786     695  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4722       4192      75  ERX-CERNET-BKB China Education and Rese
 11492        4566        302     609  CABLEONE, US
 20940        4107       3400     184  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        9070         9020  CHINAMOBILE-CN China Mobile Communications Grou
  9121        6901         6884  TTNET, TR
 12479        6876         6732  UNI2-AS, ES
  7545        5927         5232  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4722         4647  ERX-CERNET-BKB China Education and Research Net
 16509        7302         4458  AMAZON-02, US
 39891        4010         3963  ALJAWWALSTC-AS, SA
 11492        4566         3957  CABLEONE, US
  8551        3989         3951  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 20940        4107         3923  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
     25674  UNALLOCATED  8.12.76.0/24              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
     62828  UNALLOCATED  8.21.130.0/24             3356  LEVEL3, US
    393266  UNALLOCATED  8.23.52.0/24             46887  LIGHTOWER, US
    394936  UNALLOCATED  8.33.224.0/24            22442  HOU-PHONOSCOPE, 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
23.141.0.0/24        Origin:    395350  UNASSIGNED
23.141.0.0/24       Transit:     11426  TWC-11426-CAROLINAS, US
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 
41.57.124.0/22       Origin:     37442  UNASSIGNED
41.57.124.0/22      Transit:     37204  TELONE, ZW
41.57.124.0/23       Origin:     37442  UNASSIGNED
41.57.124.0/23      Transit:     37204  TELONE, ZW
41.57.124.0/24       Origin:     37442  UNASSIGNED
41.57.124.0/24      Transit:     37204  TELONE, ZW

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     
/13:589     /14:1199    /15:2046    /16:13519   /17:8360    /18:13945   
/19:25147   /20:44396   /21:52247   /22:109410  /23:97461   /24:541258  
/25:789     /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        6045        6901  TTNET, TR
 12479        5883        6876  UNI2-AS, ES
  8151        4731       10847  Uninet S.A. de C.V., MX
 11492        3489        4566  CABLEONE, US
  8551        3453        3989  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  6327        3307        3498  SHAW, CA
 39891        3193        4010  ALJAWWALSTC-AS, SA
  7155        2987        3898  VIASAT-SP-BACKBONE, US
 22773        2787        3781  ASN-CXA-ALL-CCI-22773-RDC, US
  6849        2391        2534  UKRTELNET, UA

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

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

   1:1900      2:1030      3:166       4:5         5:3916      6:116    
   7:6         8:1598      9:1        11:173      12:1623     13:337    
  14:2376     15:266      16:68       17:362      18:330      20:240    
  21:4        22:188      23:5936     24:2467     25:6        27:2665   
  29:19       31:2437     32:94       34:7        35:90       36:1865   
  37:4480     38:3635     39:746      40:159      41:3927     42:1179   
  43:2265     44:294      45:16184    46:4202     47:384      49:1720   
  50:1939     51:242      52:1492     54:387      55:850      56:8      
  57:76       58:1793     59:1161     60:990      61:2374     62:2536   
  63:1922     64:5616     65:2315     66:4866     67:2956     68:1203   
  69:4170     70:1309     71:679      72:2991     74:2651     75:1476   
  76:594      77:2233     78:3958     79:3140     80:2031     81:1790   
  82:1514     83:1216     84:1420     85:3722     86:735      87:1903   
  88:2828     89:3422     90:542      91:7564     92:2054     93:2547   
  94:3533     95:4796     96:1332     97:344      98:1031     99:735    
 100:77      101:1065    102:2313    103:30216   104:4559    105:473    
 106:886     107:2542    108:900     109:4331    110:2025    111:3322   
 112:2044    113:1544    114:1521    115:2004    116:1920    117:2484   
 118:2324    119:1865    120:1737    121:1073    122:2552    123:2109   
 124:1563    125:2166    128:1236    129:993     130:970     131:2022   
 132:829     133:377     134:1901    135:294     136:871     137:889    
 138:2531    139:1518    140:1079    141:1477    142:1409    143:1395   
 144:1199    145:347     146:1866    147:1529    148:2248    149:1789   
 150:877     151:1114    152:1816    153:468     154:3856    155:1424   
 156:1678    157:1293    158:1045    159:2175    160:2540    161:1360   
 162:3515    163:1422    164:1683    165:1652    166:787     167:1713   
 168:3828    169:875     170:4551    171:855     172:3412    173:3106   
 174:1015    175:1142    176:3619    177:4727    178:3559    179:2130   
 180:2338    181:3272    182:3232    183:1936    184:2355    185:19771  
 186:4588    187:3938    188:4031    189:3461    190:8990    191:1446   
 192:11000   193:8718    194:7152    195:5040    196:2972    197:2459   
 198:6017    199:6052    200:7664    201:5804    202:10561   203:10035  
 204:4520    205:3486    206:3882    207:3429    208:4047    209:4739   
 210:4337    211:2434    212:4036    213:3549    214:1114    215:54     
 216:6411    217:2622    218:1292    219:570     220:2044    221:923    
 222:822     223:2042   

End of report


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