[afnog] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Sep 23 18:03:05 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 24 Sep, 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:                              910003
    Prefixes after maximum aggregation (per Origin AS):          343475
    Deaggregation factor:                                          2.65
    Unique aggregates announced (without unneeded subnets):      439705
Total ASes present in the Internet Routing Table:                 73701
    Prefixes per ASN:                                             12.35
Origin-only ASes present in the Internet Routing Table:           63292
Origin ASes announcing only one prefix:                           26051
Transit ASes present in the Internet Routing Table:               10409
Transit-only ASes present in the Internet Routing Table:            410
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:              1054
    Number of instances of unregistered ASNs:                      1055
Number of 32-bit ASNs allocated by the RIRs:                      40223
Number of 32-bit ASNs visible in the Routing Table:               33403
Prefixes from 32-bit ASNs in the Routing Table:                  160413
Number of bogon 32-bit ASNs visible in the Routing Table:            11
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            541
Number of addresses announced to Internet:                   3067455872
    Equivalent to 182 /8s, 213 /16s and 169 /24s
    Percentage of available address space announced:               82.9
    Percentage of allocated address space announced:               82.9
    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:      308917

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

Prefixes being announced by APNIC Region ASes:                   237587
    Total APNIC prefixes after maximum aggregation:               67618
    APNIC Deaggregation factor:                                    3.51
Prefixes being announced from the APNIC address blocks:          232518
    Unique aggregates announced from the APNIC address blocks:    96299
APNIC Region origin ASes present in the Internet Routing Table:   12969
    APNIC Prefixes per ASN:                                       17.93
APNIC Region origin ASes announcing only one prefix:               3747
APNIC Region transit ASes present in the Internet Routing Table:   1755
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:   8208
Number of APNIC addresses announced to Internet:              773308672
    Equivalent to 46 /8s, 23 /16s and 193 /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:                    265460
    Total ARIN prefixes after maximum aggregation:               121652
    ARIN Deaggregation factor:                                     2.18
Prefixes being announced from the ARIN address blocks:           266181
    Unique aggregates announced from the ARIN address blocks:    128292
ARIN Region origin ASes present in the Internet Routing Table:    19058
    ARIN Prefixes per ASN:                                        13.97
ARIN Region origin ASes announcing only one prefix:                6955
ARIN Region transit ASes present in the Internet Routing Table:    1923
Average ARIN Region AS path length visible:                         3.8
    Max ARIN Region AS path length visible:                          33
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4621
Number of ARIN addresses announced to Internet:              1291873792
    Equivalent to 77 /8s, 0 /16s and 110 /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:                    260949
    Total RIPE prefixes after maximum aggregation:               119907
    RIPE Deaggregation factor:                                     2.18
Prefixes being announced from the RIPE address blocks:           258179
    Unique aggregates announced from the RIPE address blocks:    153773
RIPE Region origin ASes present in the Internet Routing Table:    28193
    RIPE Prefixes per ASN:                                         9.16
RIPE Region origin ASes announcing only one prefix:               12049
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:                          30
Number of RIPE region 32-bit ASNs visible in the Routing Table:   10819
Number of RIPE addresses announced to Internet:               718004096
    Equivalent to 42 /8s, 203 /16s and 223 /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:                  116503
    Total LACNIC prefixes after maximum aggregation:              27926
    LACNIC Deaggregation factor:                                   4.17
Prefixes being announced from the LACNIC address blocks:         116137
    Unique aggregates announced from the LACNIC address blocks:   49010
LACNIC Region origin ASes present in the Internet Routing Table:  10977
    LACNIC Prefixes per ASN:                                      10.58
LACNIC Region origin ASes announcing only one prefix:              2703
LACNIC Region transit ASes present in the Internet Routing Table:  2222
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:  8733
Number of LACNIC addresses announced to Internet:             176147456
    Equivalent to 10 /8s, 127 /16s and 204 /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:                  28450
    Total AfriNIC prefixes after maximum aggregation:              5576
    AfriNIC Deaggregation factor:                                  5.10
Prefixes being announced from the AfriNIC address blocks:         36447
    Unique aggregates announced from the AfriNIC address blocks:  11884
AfriNIC Region origin ASes present in the Internet Routing Table:  1693
    AfriNIC Prefixes per ASN:                                     21.53
AfriNIC Region origin ASes announcing only one prefix:              597
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: 1022
Number of AfriNIC addresses announced to Internet:            107835904
    Equivalent to 6 /8s, 109 /16s and 114 /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        9068       8884      50  CHINAMOBILE-CN China Mobile Communicati
  7545        5884        786     695  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4720       4192      75  ERX-CERNET-BKB China Education and Rese
  7552        3583       1330      20  VIETEL-AS-AP Viettel Group, VN
  7713        3497       1042      61  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3375       1870      59  VNPT-AS-VN VNPT Corp, VN
  4766        2470      11124     602  KIXS-AS-KR Korea Telecom, KR
  9498        2447        499     237  BBIL-AP BHARTI Airtel Ltd., IN
 24560        2221        854     414  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        7220      10536    2833  AMAZON-02, US
 11492        4546        301     591  CABLEONE, US
  7155        3898        265      32  VIASAT-SP-BACKBONE, US
 22773        3784       3063     349  ASN-CXA-ALL-CCI-22773-RDC, US
 16625        3531       1841    2536  AKAMAI-AS, US
  6327        3479       1319      64  SHAW, CA
   749        3033      50728    2291  DNIC-AS-00749, US
 30036        2608        369     263  MEDIACOM-ENTERPRISE-BUSINESS, US
396982        2536       3387     368  GOOGLE-CLOUD-PLATFORM, US
   209        2350       4935     395  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        6905       1730     144  UNI2-AS, ES
  9121        6877       1692      17  TTNET, TR
 20940        4062       3348     216  AKAMAI-ASN1, NL
 39891        4010        234      47  ALJAWWALSTC-AS, SA
  8551        3988        374      38  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2943       2290     911  ROSTELECOM-AS, RU
  9009        2604        251    1339  M247, GB
  6849        2590        339      20  UKRTELNET, UA
 34984        2257        358     633  TELLCOM-AS, TR
 47331        1994        313    1508  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       10975       3391     562  Uninet S.A. de C.V., MX
 10620        3506        515     788  Telmex Colombia S.A., CO
 11830        2321        369      65  Instituto Costarricense de Electricidad
 13999        2008        328     515  Mega Cable, S.A. de C.V., MX
 28573        1348       2328     264  Claro NXT Telecomunicacoes Ltda, BR
  6503        1292        338     520  Axtel, S.A.B. de C.V., MX
  3816        1278        708     147  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6147        1137        369      21  Telefonica del Peru S.A.A., PE
 11664        1059        179     466  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        1584        393      21  LINKdotNET-AS, EG
 24835        1520        521      31  RAYA-AS, EG
 36992        1349       1519     270  ETISALAT-MISR, EG
 36903        1268        550      99  MT-MPLS, MA
 29571         997         68      32  ORANGE-COTE-IVOIRE, CI
 36935         814        520      42  Vodafone-, EG
  6713         612       1863      34  IAM-AS, MA
 15399         522         52      40  WANANCHI-, KE
 37342         481         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       10975       3391     562  Uninet S.A. de C.V., MX
  9808        9068       8884      50  CHINAMOBILE-CN China Mobile Communicati
 16509        7220      10536    2833  AMAZON-02, US
 12479        6905       1730     144  UNI2-AS, ES
  9121        6877       1692      17  TTNET, TR
  7545        5884        786     695  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4720       4192      75  ERX-CERNET-BKB China Education and Rese
 11492        4546        301     591  CABLEONE, US
 20940        4062       3348     216  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        9068         9018  CHINAMOBILE-CN China Mobile Communications Grou
  9121        6877         6860  TTNET, TR
 12479        6905         6761  UNI2-AS, ES
  7545        5884         5189  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4720         4645  ERX-CERNET-BKB China Education and Research Net
 16509        7220         4387  AMAZON-02, US
 39891        4010         3963  ALJAWWALSTC-AS, SA
 11492        4546         3955  CABLEONE, US
  8551        3988         3950  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  7155        3898         3866  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
     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      /11:101     /12:297     
/13:589     /14:1203    /15:2061    /16:13505   /17:8342    /18:13943   
/19:25165   /20:44438   /21:52395   /22:109415  /23:97455   /24:540221  
/25:805     /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        6022        6877  TTNET, TR
 12479        5909        6905  UNI2-AS, ES
  8151        4720       10975  Uninet S.A. de C.V., MX
 11492        3466        4546  CABLEONE, US
  8551        3452        3988  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  6327        3288        3479  SHAW, CA
 39891        3193        4010  ALJAWWALSTC-AS, SA
  7155        2987        3898  VIASAT-SP-BACKBONE, US
 22773        2805        3784  ASN-CXA-ALL-CCI-22773-RDC, US
  6849        2445        2590  UKRTELNET, UA

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

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

   1:1917      2:1020      3:163       4:5         5:3893      6:116    
   7:6         8:1600      9:1        11:173      12:1627     13:345    
  14:2372     15:263      16:60       17:362      18:318      20:240    
  21:4        22:188      23:5954     24:2456     25:6        27:2660   
  29:19       31:2423     32:94       34:7        35:89       36:1865   
  37:4475     38:3560     39:750      40:155      41:3911     42:1167   
  43:2245     44:290      45:16203    46:4191     47:309      48:1      
  49:1733     50:1933     51:242      52:1492     54:387      55:843    
  56:8        57:68       58:1794     59:1163     60:979      61:2354   
  62:2545     63:1914     64:5610     65:2315     66:4902     67:2974   
  68:1203     69:4178     70:1313     71:686      72:2993     74:2656   
  75:1488     76:594      77:2267     78:3997     79:3135     80:2062   
  81:1794     82:1510     83:1210     84:1397     85:3728     86:730    
  87:1914     88:2828     89:3405     90:554      91:7579     92:2060   
  93:2545     94:3550     95:4799     96:1311     97:347      98:1035   
  99:722     100:75      101:1065    102:2325    103:30019   104:4573   
 105:472     106:886     107:2528    108:896     109:4310    110:1995   
 111:3322    112:2040    113:1539    114:1500    115:2008    116:1912   
 117:2482    118:2327    119:1841    120:1737    121:1085    122:2536   
 123:2103    124:1555    125:2169    128:1223    129:1019    130:1000   
 131:2042    132:823     133:378     134:1937    135:293     136:766    
 137:880     138:2536    139:1513    140:991     141:1452    142:1351   
 143:1396    144:1193    145:346     146:1861    147:1523    148:2229   
 149:1815    150:869     151:1101    152:1819    153:469     154:3775   
 155:1425    156:1701    157:1282    158:1047    159:2196    160:2531   
 161:1343    162:3496    163:1400    164:1675    165:1650    166:789    
 167:1727    168:3840    169:875     170:4531    171:847     172:3368   
 173:3105    174:1021    175:1154    176:3626    177:4702    178:3567   
 179:2144    180:2335    181:3290    182:3231    183:1922    184:2361   
 185:19755   186:4549    187:3919    188:4014    189:3465    190:8986   
 191:1422    192:10992   193:8688    194:7140    195:5054    196:2970   
 197:2458    198:5976    199:6033    200:7683    201:5798    202:10548  
 203:10033   204:4521    205:3491    206:3877    207:3425    208:4054   
 209:4737    210:4339    211:2448    212:4087    213:3465    214:1116   
 215:54      216:6416    217:2637    218:1284    219:567     220:2036   
 221:922     222:827     223:2005   

End of report



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