[cmNOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Aug 5 18:02:47 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 06 Aug, 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:                              905630
    Prefixes after maximum aggregation (per Origin AS):          341172
    Deaggregation factor:                                          2.65
    Unique aggregates announced (without unneeded subnets):      437967
Total ASes present in the Internet Routing Table:                 73504
    Prefixes per ASN:                                             12.32
Origin-only ASes present in the Internet Routing Table:           63067
Origin ASes announcing only one prefix:                           26002
Transit ASes present in the Internet Routing Table:               10437
Transit-only ASes present in the Internet Routing Table:            397
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:               964
    Number of instances of unregistered ASNs:                       964
Number of 32-bit ASNs allocated by the RIRs:                      39934
Number of 32-bit ASNs visible in the Routing Table:               33128
Prefixes from 32-bit ASNs in the Routing Table:                  157782
Number of bogon 32-bit ASNs visible in the Routing Table:            12
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            493
Number of addresses announced to Internet:                   3071202688
    Equivalent to 183 /8s, 14 /16s and 213 /24s
    Percentage of available address space announced:               83.0
    Percentage of allocated address space announced:               83.0
    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:      307620

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

Prefixes being announced by APNIC Region ASes:                   236329
    Total APNIC prefixes after maximum aggregation:               67226
    APNIC Deaggregation factor:                                    3.52
Prefixes being announced from the APNIC address blocks:          231364
    Unique aggregates announced from the APNIC address blocks:    96319
APNIC Region origin ASes present in the Internet Routing Table:   12855
    APNIC Prefixes per ASN:                                       18.00
APNIC Region origin ASes announcing only one prefix:               3724
APNIC Region transit ASes present in the Internet Routing Table:   1758
Average APNIC Region AS path length visible:                        4.7
    Max APNIC Region AS path length visible:                         26
Number of APNIC region 32-bit ASNs visible in the Routing Table:   8083
Number of APNIC addresses announced to Internet:              773135872
    Equivalent to 46 /8s, 21 /16s and 30 /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:                    264488
    Total ARIN prefixes after maximum aggregation:               120774
    ARIN Deaggregation factor:                                     2.19
Prefixes being announced from the ARIN address blocks:           264796
    Unique aggregates announced from the ARIN address blocks:    127576
ARIN Region origin ASes present in the Internet Routing Table:    19052
    ARIN Prefixes per ASN:                                        13.90
ARIN Region origin ASes announcing only one prefix:                6923
ARIN Region transit ASes present in the Internet Routing Table:    1919
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:    4580
Number of ARIN addresses announced to Internet:              1295964160
    Equivalent to 77 /8s, 62 /16s and 216 /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:                    259894
    Total RIPE prefixes after maximum aggregation:               119098
    RIPE Deaggregation factor:                                     2.18
Prefixes being announced from the RIPE address blocks:           257286
    Unique aggregates announced from the RIPE address blocks:    152980
RIPE Region origin ASes present in the Internet Routing Table:    28185
    RIPE Prefixes per ASN:                                         9.13
RIPE Region origin ASes announcing only one prefix:               12090
RIPE Region transit ASes present in the Internet Routing Table:    4005
Average RIPE Region AS path length visible:                         4.3
    Max RIPE Region AS path length visible:                          35
Number of RIPE region 32-bit ASNs visible in the Routing Table:   10778
Number of RIPE addresses announced to Internet:               717634176
    Equivalent to 42 /8s, 198 /16s and 58 /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:                  115929
    Total LACNIC prefixes after maximum aggregation:              27750
    LACNIC Deaggregation factor:                                   4.18
Prefixes being announced from the LACNIC address blocks:         115641
    Unique aggregates announced from the LACNIC address blocks:   48860
LACNIC Region origin ASes present in the Internet Routing Table:  10958
    LACNIC Prefixes per ASN:                                      10.55
LACNIC Region origin ASes announcing only one prefix:              2682
LACNIC Region transit ASes present in the Internet Routing Table:  2253
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:  8691
Number of LACNIC addresses announced to Internet:             176386816
    Equivalent to 10 /8s, 131 /16s and 115 /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:                  28026
    Total AfriNIC prefixes after maximum aggregation:              5587
    AfriNIC Deaggregation factor:                                  5.02
Prefixes being announced from the AfriNIC address blocks:         36050
    Unique aggregates announced from the AfriNIC address blocks:  11813
AfriNIC Region origin ASes present in the Internet Routing Table:  1669
    AfriNIC Prefixes per ASN:                                     21.60
AfriNIC Region origin ASes announcing only one prefix:              583
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:                       33
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:  996
Number of AfriNIC addresses announced to Internet:            107798784
    Equivalent to 6 /8s, 108 /16s and 225 /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        9026       8884      50  CHINAMOBILE-CN China Mobile Communicati
  7545        5935        789     696  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4711       4192      75  ERX-CERNET-BKB China Education and Rese
  7552        3585       1330      19  VIETEL-AS-AP Viettel Group, VN
  7713        3501       1042      61  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3377       1877      67  VNPT-AS-VN VNPT Corp, VN
  4766        2494      11124     600  KIXS-AS-KR Korea Telecom, KR
  9498        2427        499     238  BBIL-AP BHARTI Airtel Ltd., IN
 45090        2174       1438      79  TENCENT-NET-AP Shenzhen Tencent Compute
 24560        2156        851     401  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd

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        6821      10401    2710  AMAZON-02, US
 11492        4642        307     476  CABLEONE, US
  7155        3906        265      32  VIASAT-SP-BACKBONE, US
 22773        3840       3069     363  ASN-CXA-ALL-CCI-22773-RDC, US
 16625        3462       1784    2501  AKAMAI-AS, US
  6327        3447       1319      66  SHAW, CA
   749        3021      50731    2279  DNIC-AS-00749, US
 30036        2607        373     253  MEDIACOM-ENTERPRISE-BUSINESS, US
396982        2524       3384     362  GOOGLE-CLOUD-PLATFORM, US
   209        2371       4936     408  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
 12479        6875       1730     144  UNI2-AS, ES
  9121        6611       1692      17  TTNET, TR
 20940        4050       3348     219  AKAMAI-ASN1, NL
 39891        4006        234      46  ALJAWWALSTC-AS, SA
  8551        3993        374      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2941       2290     911  ROSTELECOM-AS, RU
  6849        2754        355      21  UKRTELNET, UA
  9009        2600        256    1343  M247, GB
 34984        2245        357     634  TELLCOM-AS, TR
 47331        2063        324    1563  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       10808       3398     561  Uninet S.A. de C.V., MX
 10620        3483        515     780  Telmex Colombia S.A., CO
 11830        2407        369      64  Instituto Costarricense de Electricidad
 13999        1942        318     517  Mega Cable, S.A. de C.V., MX
 28573        1365       2330     267  Claro NXT Telecomunicacoes Ltda, BR
  6503        1290        338     520  Axtel, S.A.B. de C.V., MX
  3816        1270        695     154  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6147        1100        370      21  Telefonica del Peru S.A.A., PE
 11664        1048        180     455  Techtel LMDS Comunicaciones Interactiva
 26615         981       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        1529        393      21  LINKdotNET-AS, EG
 24835        1524        521      31  RAYA-AS, EG
 36992        1324       1519     268  ETISALAT-MISR, EG
 36903        1199        545     114  MT-MPLS, MA
 29571         972         66      53  ORANGE-COTE-IVOIRE, CI
 36935         801        520      42  Vodafone-, EG
  6713         612       1863      34  IAM-AS, MA
 15399         519         52      39  WANANCHI-, KE
 37342         481         32       1  MOVITEL, MZ
 23889         401        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       10808       3398     561  Uninet S.A. de C.V., MX
  9808        9026       8884      50  CHINAMOBILE-CN China Mobile Communicati
 12479        6875       1730     144  UNI2-AS, ES
 16509        6821      10401    2710  AMAZON-02, US
  9121        6611       1692      17  TTNET, TR
  7545        5935        789     696  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4711       4192      75  ERX-CERNET-BKB China Education and Rese
 11492        4642        307     476  CABLEONE, US
 20940        4050       3348     219  AKAMAI-ASN1, NL
 39891        4006        234      46  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        9026         8976  CHINAMOBILE-CN China Mobile Communications Grou
 12479        6875         6731  UNI2-AS, ES
  9121        6611         6594  TTNET, TR
  7545        5935         5239  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4711         4636  ERX-CERNET-BKB China Education and Research Net
 11492        4642         4166  CABLEONE, US
 16509        6821         4111  AMAZON-02, US
 39891        4006         3960  ALJAWWALSTC-AS, SA
  8551        3993         3954  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  7155        3906         3874  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
    398083  UNALLOCATED  5.133.124.0/24          399587  UT, US
     33123  UNALLOCATED  8.10.69.0/24             11168  SCC, 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
     18604  UNALLOCATED  8.25.204.0/24             3356  LEVEL3, US
    394936  UNALLOCATED  8.33.224.0/24            22442  HOU-PHONOSCOPE, US
     54338  UNALLOCATED  8.33.241.0/24             6461  ZAYO-6461, US
     18798  UNALLOCATED  8.40.106.0/24             6461  ZAYO-6461, US
    394856  UNALLOCATED  8.40.216.0/24             3356  LEVEL3, 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      /10:40      /11:101     /12:303     
/13:595     /14:1209    /15:2064    /16:13543   /17:8322    /18:13926   
/19:25108   /20:44425   /21:52295   /22:108980  /23:96909   /24:536977  
/25:804     /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        5862        6875  UNI2-AS, ES
  9121        5769        6611  TTNET, TR
  8151        4532       10808  Uninet S.A. de C.V., MX
 11492        3546        4642  CABLEONE, US
  8551        3456        3993  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  6327        3258        3447  SHAW, CA
 39891        3189        4006  ALJAWWALSTC-AS, SA
  7155        2995        3906  VIASAT-SP-BACKBONE, US
 22773        2851        3840  ASN-CXA-ALL-CCI-22773-RDC, US
  6849        2612        2754  UKRTELNET, UA

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

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

   1:1973      2:1022      3:157       4:5         5:3835      6:111    
   7:6         8:1584      9:1        11:173      12:1643     13:340    
  14:2360     15:241      16:44       17:383      18:187      20:242    
  21:4        22:188      23:5855     24:2428     25:6        27:2611   
  29:19       31:2413     32:95       34:7        35:87       36:1817   
  37:4441     38:3359     39:720      40:152      41:3884     42:1135   
  43:2204     44:288      45:16054    46:4146     47:332      49:1698   
  50:1951     51:238      52:1457     54:384      55:855      56:8      
  57:58       58:1803     59:1163     60:966      61:2295     62:2543   
  63:1932     64:5587     65:2374     66:4872     67:2986     68:1194   
  69:4157     70:1315     71:680      72:3029     74:2641     75:1398   
  76:581      77:2247     78:3921     79:3129     80:2009     81:1786   
  82:1496     83:1209     84:1368     85:3692     86:741      87:1906   
  88:2805     89:3393     90:546      91:7631     92:2035     93:2554   
  94:3506     95:4798     96:1335     97:350      98:1028     99:754    
 100:77      101:1062    102:2199    103:29539   104:4533    105:467    
 106:880     107:2546    108:867     109:4323    110:2018    111:3321   
 112:2036    113:1536    114:1484    115:2003    116:1909    117:2418   
 118:2301    119:1846    120:1787    121:1076    122:2550    123:2086   
 124:1587    125:2110    128:1239    129:1054    130:977     131:2041   
 132:777     133:378     134:1942    135:298     136:890     137:868    
 138:2497    139:1496    140:938     141:1441    142:1329    143:1403   
 144:1207    145:344     146:1843    147:1514    148:2211    149:1765   
 150:861     151:1069    152:1870    153:463     154:3689    155:1447   
 156:1702    157:1276    158:1040    159:2216    160:2501    161:1314   
 162:3495    163:1343    164:1642    165:1635    166:771     167:1752   
 168:3820    169:882     170:4530    171:838     172:3300    173:3132   
 174:1049    175:1143    176:3632    177:4713    178:3541    179:2147   
 180:2342    181:3235    182:3232    183:1937    184:2385    185:19605  
 186:4483    187:3827    188:3998    189:3396    190:8983    191:1441   
 192:10981   193:8677    194:7072    195:5056    196:2944    197:2422   
 198:6005    199:6044    200:7594    201:5844    202:10524   203:10050  
 204:4511    205:3445    206:3764    207:3434    208:4046    209:4705   
 210:4381    211:2408    212:4055    213:3480    214:1132    215:65     
 216:6397    217:2637    218:1285    219:575     220:2005    221:961    
 222:827     223:2005   

End of report


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