[cmNOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Apr 14 18:03:16 UTC 2023


This is an automated weekly mailing describing the state of the Global
IPv4 Routing Table as seen from APNIC's router in Japan.

The posting is sent to APOPS, NANOG, AfNOG, SANOG, PacNOG, SAFNOG
TZNOG, MENOG, BJNOG, SDNOG, CMNOG, LACNOG and the RIPE Routing WG.

Daily listings are sent to bgp-stats at lists.apnic.net.

For historical data, please see https://thyme.apnic.net.

If you have any comments please contact Philip Smith <pfsinoz at gmail.com>.

IPv4 Routing Table Report   04:00 +10GMT Sat 15 Apr, 2023

  BGP Table (Global) as seen in Japan.

Report Website:     https://thyme.apnic.net
Detailed Analysis:  https://thyme.apnic.net/current/

Analysis Summary
----------------

BGP routing table entries examined:                              918516
    Prefixes after maximum aggregation (per Origin AS):          348679
    Deaggregation factor:                                          2.63
    Unique aggregates announced (without unneeded subnets):      448419
Total ASes present in the Internet Routing Table:                 74329
    Prefixes per ASN:                                             12.36
Origin-only ASes present in the Internet Routing Table:           63774
Origin ASes announcing only one prefix:                           26207
Transit ASes present in the Internet Routing Table:               10555
Transit-only ASes present in the Internet Routing Table:            432
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:              1397
    Number of instances of unregistered ASNs:                      1397
Number of 32-bit ASNs allocated by the RIRs:                      41657
Number of 32-bit ASNs visible in the Routing Table:               34469
Prefixes from 32-bit ASNs in the Routing Table:                  170077
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:            934
Number of addresses announced to Internet:                   3061998848
    Equivalent to 182 /8s, 130 /16s and 101 /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:      307006

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

Prefixes being announced by APNIC Region ASes:                   242257
    Total APNIC prefixes after maximum aggregation:               69283
    APNIC Deaggregation factor:                                    3.50
Prefixes being announced from the APNIC address blocks:          236590
    Unique aggregates announced from the APNIC address blocks:    97749
APNIC Region origin ASes present in the Internet Routing Table:   13397
    APNIC Prefixes per ASN:                                       17.66
APNIC Region origin ASes announcing only one prefix:               3932
APNIC Region transit ASes present in the Internet Routing Table:   1805
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         26
Number of APNIC region 32-bit ASNs visible in the Routing Table:   8686
Number of APNIC addresses announced to Internet:              773666688
    Equivalent to 46 /8s, 29 /16s and 55 /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:                    268730
    Total ARIN prefixes after maximum aggregation:               122356
    ARIN Deaggregation factor:                                     2.20
Prefixes being announced from the ARIN address blocks:           271182
    Unique aggregates announced from the ARIN address blocks:    130874
ARIN Region origin ASes present in the Internet Routing Table:    19082
    ARIN Prefixes per ASN:                                        14.21
ARIN Region origin ASes announcing only one prefix:                6964
ARIN Region transit ASes present in the Internet Routing Table:    1963
Average ARIN Region AS path length visible:                         3.7
    Max ARIN Region AS path length visible:                          24
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4788
Number of ARIN addresses announced to Internet:              1285271808
    Equivalent to 76 /8s, 155 /16s and 177 /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:                    259027
    Total RIPE prefixes after maximum aggregation:               121950
    RIPE Deaggregation factor:                                     2.12
Prefixes being announced from the RIPE address blocks:           255085
    Unique aggregates announced from the RIPE address blocks:    157646
RIPE Region origin ASes present in the Internet Routing Table:    28296
    RIPE Prefixes per ASN:                                         9.01
RIPE Region origin ASes announcing only one prefix:               12040
RIPE Region transit ASes present in the Internet Routing Table:    3962
Average RIPE Region AS path length visible:                         4.3
    Max RIPE Region AS path length visible:                          31
Number of RIPE region 32-bit ASNs visible in the Routing Table:   11132
Number of RIPE addresses announced to Internet:               717840512
    Equivalent to 42 /8s, 201 /16s and 96 /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:                  117757
    Total LACNIC prefixes after maximum aggregation:              28461
    LACNIC Deaggregation factor:                                   4.14
Prefixes being announced from the LACNIC address blocks:         117044
    Unique aggregates announced from the LACNIC address blocks:   49186
LACNIC Region origin ASes present in the Internet Routing Table:  10985
    LACNIC Prefixes per ASN:                                      10.65
LACNIC Region origin ASes announcing only one prefix:              2661
LACNIC Region transit ASes present in the Internet Routing Table:  2286
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:  8780
Number of LACNIC addresses announced to Internet:             176708352
    Equivalent to 10 /8s, 136 /16s and 91 /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:                  29348
    Total AfriNIC prefixes after maximum aggregation:              5795
    AfriNIC Deaggregation factor:                                  5.06
Prefixes being announced from the AfriNIC address blocks:         37681
    Unique aggregates announced from the AfriNIC address blocks:  12293
AfriNIC Region origin ASes present in the Internet Routing Table:  1738
    AfriNIC Prefixes per ASN:                                     21.68
AfriNIC Region origin ASes announcing only one prefix:              610
AfriNIC Region transit ASes present in the Internet Routing Table:  335
Average AfriNIC Region AS path length visible:                      4.9
    Max AfriNIC Region AS path length visible:                       30
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1083
Number of AfriNIC addresses announced to Internet:            107792384
    Equivalent to 6 /8s, 108 /16s and 200 /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        9480       8705      39  CHINAMOBILE-CN China Mobile Communicati
  7545        5728        786     689  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4865       4192      75  ERX-CERNET-BKB China Education and Rese
  7552        3552       1331      21  VIETEL-AS-AP Viettel Group, VN
  7713        3545       1043      65  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3388       1872      93  VNPT-AS-VN VNPT Corp, VN
  9498        2932        491     237  BBIL-AP BHARTI Airtel Ltd., IN
  4766        2551      11252     591  KIXS-AS-KR Korea Telecom, KR
 24560        2375        836     442  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd
 45090        2184       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        8240      10779    2906  AMAZON-02, US
 11492        4541        301     607  CABLEONE, US
  7155        3967        279      48  VIASAT-SP-BACKBONE, US
 22773        3600       3056     280  ASN-CXA-ALL-CCI-22773-RDC, US
  6327        3514       1320      64  SHAW, CA
 16625        3165       1590    2343  AKAMAI-AS, US
   749        3055      50540    2322  DNIC-AS-00749, US
396982        2630       3590     362  GOOGLE-CLOUD-PLATFORM, US
  7018        2566      24116    1563  ATT-INTERNET4, US
 30036        2493        360     505  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        7237       1705     149  UNI2-AS, ES
 39891        4833        286      59  ALJAWWALSTC-AS, SA
 20940        4066       3399     164  AKAMAI-ASN1, NL
  8551        3889        370      37  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2949       2292     909  ROSTELECOM-AS, RU
  9009        2659        249    1390  M247, RO
 34984        2271        359     611  TELLCOM-AS, TR
  6849        2017        307      18  UKRTELNET, UA
 58224        1850        950     543  TCI, IR
 13188        1606        100      26  TRIOLAN, 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       11234       3343     579  Uninet S.A. de C.V., MX
 10620        3500        507     851  Telmex Colombia S.A., CO
 13999        2317        355     615  Mega Cable, S.A. de C.V., MX
 11830        2262        369      64  Instituto Costarricense de Electricidad
 28573        1332       2324     240  Claro NXT Telecomunicacoes Ltda, BR
  6503        1299        339     514  Axtel, S.A.B. de C.V., MX
  3816        1293        760     170  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6147        1133        370      22  Telefonica del Peru S.A.A., PE
 11664        1103        180     447  Techtel LMDS Comunicaciones Interactiva
 26615        1028       2498      45  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        1578        393      19  LINKdotNET-AS, EG
 24835        1541        533      30  RAYA-AS, EG
 36992        1338       1518     275  ETISALAT-MISR, EG
 36903        1242        550      99  MT-MPLS, MA
 29571        1023         67      48  ORANGE-COTE-IVOIRE, CI
 36935         875        520      42  Vodafone-, EG
  6713         550       1861      34  IAM-AS, MA
 15399         535         54      47  WANANCHI-, KE
 37342         493         32       1  MOVITEL, MZ
 24757         488         73       5  EthioNet-AS, ET

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       11234       3343     579  Uninet S.A. de C.V., MX
  9808        9480       8705      39  CHINAMOBILE-CN China Mobile Communicati
 16509        8240      10779    2906  AMAZON-02, US
 12479        7237       1705     149  UNI2-AS, ES
  7545        5728        786     689  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4865       4192      75  ERX-CERNET-BKB China Education and Rese
 39891        4833        286      59  ALJAWWALSTC-AS, SA
 11492        4541        301     607  CABLEONE, US
 20940        4066       3399     164  AKAMAI-ASN1, NL
  7155        3967        279      48  VIASAT-SP-BACKBONE, US

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

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

   ASN  No of nets  Net Savings  Description
  9808        9480         9441  CHINAMOBILE-CN China Mobile Communications Grou
 12479        7237         7088  UNI2-AS, ES
 16509        8240         5334  AMAZON-02, US
  7545        5728         5039  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4865         4790  ERX-CERNET-BKB China Education and Research Net
 39891        4833         4774  ALJAWWALSTC-AS, SA
 11492        4541         3934  CABLEONE, US
  7155        3967         3919  VIASAT-SP-BACKBONE, US
 20940        4066         3902  AKAMAI-ASN1, NL
  8551        3889         3852  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo

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

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

    Bad AS  Designation  Net Originated      Transit AS  Transit AS Name
      3507  UNALLOCATED  5.105.166.0/24          213035  AS-SERVERION Serverion B.V.,
    398083  UNALLOCATED  5.133.124.0/24          399587  UT, US
     33492  UNALLOCATED  8.6.184.0/23             33650  COMCAST-33650, US
     33123  UNALLOCATED  8.10.69.0/24             11168  SCC, US
     12169  UNALLOCATED  8.15.207.0/24             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
    396894  UNALLOCATED  8.28.201.0/24            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
23.131.185.0/24      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:       174  COGENT-174, US
23.131.188.0/24     Transit:      2516  KDDI KDDI CORPORATION, JP
23.136.112.0/24      Origin:     54835  UNASSIGNED
23.136.112.0/24     Transit:     21559  OSNET, PR

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      /11:103     /12:299     
/13:578     /14:1198    /15:2034    /16:13480   /17:8257    /18:13837   
/19:25149   /20:44265   /21:51412   /22:109764  /23:97735   /24:549596  
/25:741     /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        6297        7237  UNI2-AS, ES
  8151        5196       11234  Uninet S.A. de C.V., MX
 39891        3632        4833  ALJAWWALSTC-AS, SA
 11492        3450        4541  CABLEONE, US
  8551        3361        3889  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  6327        3323        3514  SHAW, CA
  7155        3039        3967  VIASAT-SP-BACKBONE, US
 22773        2668        3600  ASN-CXA-ALL-CCI-22773-RDC, US
 30036        2150        2493  MEDIACOM-ENTERPRISE-BUSINESS, US
 10620        2054        3500  Telmex Colombia S.A., CO

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

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

   1:1703      2:1239      3:173       4:5         5:4490      6:128    
   7:6         8:1549      9:1        11:172      12:1548     13:391    
  14:2319     15:299      16:183      17:372      18:415      20:255    
  21:4        22:188      23:6227     24:2586     25:6        27:2489   
  29:19       31:2522     32:89       34:10       35:107      36:1932   
  37:4652     38:4438     39:811      40:151      41:3973     42:988    
  43:2351     44:308      45:16557    46:4265     47:363      49:1757   
  50:1838     51:571      52:1589     54:389      55:858      56:8      
  57:112      58:1757     59:1127     60:972      61:2447     62:2655   
  63:1923     64:5676     65:2320     66:4941     67:3016     68:1367   
  69:4162     70:1252     71:671      72:2968     74:2626     75:1466   
  76:610      77:2435     78:1864     79:3170     80:2095     81:1750   
  82:1486     83:1279     84:1533     85:2995     86:759      87:1986   
  88:1245     89:3613     90:612      91:7699     92:2064     93:2624   
  94:3592     95:4000     96:1328     97:336      98:1157     99:744    
 100:72      101:1071    102:2672    103:31271   104:4652    105:484    
 106:905     107:2526    108:1028    109:4425    110:2080    111:3234   
 112:2061    113:1565    114:1649    115:2022    116:1936    117:2557   
 118:2280    119:2020    120:1795    121:1115    122:2610    123:2160   
 124:1616    125:2524    128:1312    129:1060    130:1016    131:1984   
 132:811     133:422     134:1902    135:304     136:878     137:944    
 138:2550    139:1573    140:1232    141:1460    142:1436    143:1493   
 144:1164    145:347     146:1940    147:1574    148:2350    149:2092   
 150:871     151:1152    152:1844    153:488     154:4398    155:1435   
 156:1797    157:1309    158:1055    159:2287    160:2531    161:1518   
 162:3515    163:1516    164:1624    165:1711    166:1021    167:1723   
 168:3883    169:937     170:4616    171:886     172:3557    173:2940   
 174:1072    175:1153    176:3677    177:4583    178:3585    179:2132   
 180:2422    181:3424    182:3376    183:1930    184:2356    185:20185  
 186:4742    187:3966    188:4106    189:3546    190:9120    191:1435   
 192:10929   193:8865    194:7310    195:5157    196:3094    197:2395   
 198:5956    199:6099    200:8016    201:5852    202:10664   203:10223  
 204:4601    205:3555    206:4148    207:3459    208:4077    209:4867   
 210:4428    211:2487    212:4113    213:3576    214:1083    215:59     
 216:6633    217:2694    218:1295    219:577     220:2016    221:971    
 222:887     223:2184   

End of report


More information about the cmNOG mailing list