[cmNOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Oct 6 18:02:11 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
UKNOF, 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 07 Oct, 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:                              932315
    Prefixes after maximum aggregation (per Origin AS):          353915
    Deaggregation factor:                                          2.63
    Unique aggregates announced (without unneeded subnets):      453446
Total ASes present in the Internet Routing Table:                 74914
    Prefixes per ASN:                                             12.45
Origin-only ASes present in the Internet Routing Table:           64301
Origin ASes announcing only one prefix:                           26472
Transit ASes present in the Internet Routing Table:               10613
Transit-only ASes present in the Internet Routing Table:            456
Average AS path length visible in the Internet Routing Table:       4.2
    Max AS path length visible:                                      55
    Max AS path prepend of ASN (265020)                              50
Prefixes from unregistered ASNs in the Routing Table:               995
    Number of instances of unregistered ASNs:                       997
Number of 32-bit ASNs allocated by the RIRs:                      42780
Number of 32-bit ASNs visible in the Routing Table:               35222
Prefixes from 32-bit ASNs in the Routing Table:                  176100
Number of bogon 32-bit ASNs visible in the Routing Table:            34
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            526
Number of addresses announced to Internet:                   3053552128
    Equivalent to 182 /8s, 1 /16s and 130 /24s
    Percentage of available address space announced:               82.5
    Percentage of allocated address space announced:               82.5
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               99.5
Total number of prefixes smaller than registry allocations:      310516

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

Prefixes being announced by APNIC Region ASes:                   247120
    Total APNIC prefixes after maximum aggregation:               71004
    APNIC Deaggregation factor:                                    3.48
Prefixes being announced from the APNIC address blocks:          240693
    Unique aggregates announced from the APNIC address blocks:    98970
APNIC Region origin ASes present in the Internet Routing Table:   13692
    APNIC Prefixes per ASN:                                       17.58
APNIC Region origin ASes announcing only one prefix:               4112
APNIC Region transit ASes present in the Internet Routing Table:   1816
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         27
Number of APNIC region 32-bit ASNs visible in the Routing Table:   9019
Number of APNIC addresses announced to Internet:              772799872
    Equivalent to 46 /8s, 15 /16s and 253 /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, 131072-153913
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:                    273510
    Total ARIN prefixes after maximum aggregation:               123860
    ARIN Deaggregation factor:                                     2.21
Prefixes being announced from the ARIN address blocks:           277244
    Unique aggregates announced from the ARIN address blocks:    131906
ARIN Region origin ASes present in the Internet Routing Table:    19090
    ARIN Prefixes per ASN:                                        14.52
ARIN Region origin ASes announcing only one prefix:                6954
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:    4827
Number of ARIN addresses announced to Internet:              1277857536
    Equivalent to 76 /8s, 42 /16s and 143 /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:                    261988
    Total RIPE prefixes after maximum aggregation:               123876
    RIPE Deaggregation factor:                                     2.11
Prefixes being announced from the RIPE address blocks:           257012
    Unique aggregates announced from the RIPE address blocks:    160127
RIPE Region origin ASes present in the Internet Routing Table:    28445
    RIPE Prefixes per ASN:                                         9.04
RIPE Region origin ASes announcing only one prefix:               12074
RIPE Region transit ASes present in the Internet Routing Table:    3953
Average RIPE Region AS path length visible:                         4.3
    Max RIPE Region AS path length visible:                          34
Number of RIPE region 32-bit ASNs visible in the Routing Table:   11370
Number of RIPE addresses announced to Internet:               716284544
    Equivalent to 42 /8s, 177 /16s and 162 /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
                       196608-216475
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:                  118788
    Total LACNIC prefixes after maximum aggregation:              28527
    LACNIC Deaggregation factor:                                   4.16
Prefixes being announced from the LACNIC address blocks:         117763
    Unique aggregates announced from the LACNIC address blocks:   49325
LACNIC Region origin ASes present in the Internet Routing Table:  11046
    LACNIC Prefixes per ASN:                                      10.66
LACNIC Region origin ASes announcing only one prefix:              2709
LACNIC Region transit ASes present in the Internet Routing Table:  2332
Average LACNIC Region AS path length visible:                       4.9
    Max LACNIC Region AS path length visible:                        55
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8869
Number of LACNIC addresses announced to Internet:             178476544
    Equivalent to 10 /8s, 163 /16s and 86 /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:                  29914
    Total AfriNIC prefixes after maximum aggregation:              5957
    AfriNIC Deaggregation factor:                                  5.02
Prefixes being announced from the AfriNIC address blocks:         39077
    Unique aggregates announced from the AfriNIC address blocks:  12679
AfriNIC Region origin ASes present in the Internet Routing Table:  1795
    AfriNIC Prefixes per ASN:                                     21.77
AfriNIC Region origin ASes announcing only one prefix:              623
AfriNIC Region transit ASes present in the Internet Routing Table:  340
Average AfriNIC Region AS path length visible:                      4.9
    Max AfriNIC Region AS path length visible:                       31
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1137
Number of AfriNIC addresses announced to Internet:            107707648
    Equivalent to 6 /8s, 107 /16s and 125 /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        9493       8730      44  CHINAMOBILE-CN China Mobile Communicati
  7545        5733        785     698  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4936       4192      75  ERX-CERNET-BKB China Education and Rese
 18403        4223        347      25  FPT-AS-AP FPT Telecom Company, VN
  7713        3594       1043      63  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3336       1840      96  VNPT-AS-VN VNPT Corp, VN
  9498        3195        498     252  BBIL-AP BHARTI Airtel Ltd., IN
  7552        2940       1330      20  VIETEL-AS-AP Viettel Group, VN
  4766        2540      11270     601  KIXS-AS-KR Korea Telecom, KR
 24560        2531        850     381  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        9080      10987    3283  AMAZON-02, US
 11492        4537        301     671  CABLEONE, US
  7155        4177        288     100  VIASAT-SP-BACKBONE, US
  6327        3546       1319      66  SHAW, CA
 22773        3520       3054     297  ASN-CXA-ALL-CCI-22773-RDC, US
   749        3163      54958    2415  DNIC-AS-00749, US
   367        3022       3847    1419  DNIC-ASBLK-00306-00371, US
 16625        3015       1418    2307  AKAMAI-AS, US
396982        2700       3597     396  GOOGLE-CLOUD-PLATFORM, US
 30036        2498        359     372  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        7386       1713     145  UNI2-AS, ES
 39891        4897        290      61  ALJAWWALSTC-AS, SA
 20940        4082       3398     153  AKAMAI-ASN1, NL
  8551        3446        368      34  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
  9009        3028        272    1501  M247, RO
 12389        2971       2295     915  ROSTELECOM-AS, RU
 34984        2334        362     594  TELLCOM-AS, TR
 58224        1720        923     530  TCI, IR
 13188        1606        100      27  TRIOLAN, UA
  8452        1520       1852      16  TE-AS TE-AS, EG

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       11814       3378     601  UNINET, MX
 10620        3534        504     858  Telmex Colombia S.A., CO
 13999        2395        331     628  Mega Cable, S.A. de C.V., MX
 11830        2006        369      64  Instituto Costarricense de Electricidad
 28573        1331       2324     233  Claro NXT Telecomunicacoes Ltda, BR
  3816        1297        766     191  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6503        1293        344     507  Axtel, S.A.B. de C.V., MX
  6147        1111        369      22  Telefonica del Peru S.A.A., PE
 11664        1077        169     428  Techtel LMDS Comunicaciones Interactiva
 26615        1035       2501      49  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        1606        393      19  LINKdotNET-AS, EG
 24835        1535        549      28  RAYA-AS, EG
 36992        1326       1516     283  ETISALAT-MISR, EG
 36903        1248        553      98  MT-MPLS, MA
 29571        1045         67      45  ORANGE-COTE-IVOIRE, CI
 36935         938        521      44  Vodafone-, EG
  6713         550       1861      34  IAM-AS, MA
 15399         540         55      53  WANANCHI-, KE
 37342         489         32       1  MOVITEL, MZ
 24757         479         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       11814       3378     601  UNINET, MX
  9808        9493       8730      44  CHINAMOBILE-CN China Mobile Communicati
 16509        9080      10987    3283  AMAZON-02, US
 12479        7386       1713     145  UNI2-AS, ES
  7545        5733        785     698  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4936       4192      75  ERX-CERNET-BKB China Education and Rese
 39891        4897        290      61  ALJAWWALSTC-AS, SA
 11492        4537        301     671  CABLEONE, US
 18403        4223        347      25  FPT-AS-AP FPT Telecom Company, VN
  7155        4177        288     100  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        9493         9449  CHINAMOBILE-CN China Mobile Communications Grou
 12479        7386         7241  UNI2-AS, ES
 16509        9080         5797  AMAZON-02, US
  7545        5733         5035  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4936         4861  ERX-CERNET-BKB China Education and Research Net
 39891        4897         4836  ALJAWWALSTC-AS, SA
 18403        4223         4198  FPT-AS-AP FPT Telecom Company, VN
  7155        4177         4077  VIASAT-SP-BACKBONE, US
 20940        4082         3929  AKAMAI-ASN1, NL
 11492        4537         3866  CABLEONE, 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
     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            32787  PROLEXIC-TECHNOLOGIES-DDOS-M
     40493  UNALLOCATED  8.17.26.0/24              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
     54338  UNALLOCATED  8.33.241.0/24             6461  ZAYO-6461, 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
23.140.216.0/24      Origin:     27176  DATAWAGON, US
23.140.216.0/24     Transit:     20278  NEXEON, US
23.141.0.0/24        Origin:    395350  RESERVED, ZZ
23.141.0.0/24       Transit:     11426  TWC-11426-CAROLINAS, US
23.176.160.0/24      Origin:    397327  RESERVED, ZZ
23.176.160.0/24     Transit:     19108  SUDDENLINK-COMMUNICATIONS, US
23.189.192.0/24      Origin:     27593  RESERVED, ZZ
23.189.192.0/24     Transit:       174  COGENT-174, US
36.255.139.0/24      Origin:     56050  NEW-SHINE-INTERNET-TH 134 Yenchit Road, 
36.255.139.0/24     Transit:     58913  HCL-TH 4819 Supapong 3 Alley, Srinakarin

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       /9:14      /10:38      /11:101     /12:299     
/13:581     /14:1196    /15:2064    /16:13502   /17:8315    /18:13881   
/19:25207   /20:44503   /21:51603   /22:110347  /23:99093   /24:560815  
/25:740     /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        6472        7386  UNI2-AS, ES
  8151        5850       11814  UNINET, MX
 39891        3632        4897  ALJAWWALSTC-AS, SA
 11492        3450        4537  CABLEONE, US
  6327        3356        3546  SHAW, CA
  7155        3122        4177  VIASAT-SP-BACKBONE, US
  8551        2923        3446  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 22773        2574        3520  ASN-CXA-ALL-CCI-22773-RDC, US
 30036        2155        2498  MEDIACOM-ENTERPRISE-BUSINESS, US
 10620        2108        3534  Telmex Colombia S.A., CO

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

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

   1:2229      2:1431      3:265       4:5         5:4424      6:137    
   7:6         8:1538      9:1        11:172      12:1503     13:367    
  14:2330     15:304      16:197      17:368      18:658      20:296    
  21:4        22:188      23:6446     24:2520     25:2        27:2534   
  29:19       31:2546     32:78       34:25       35:117      36:2009   
  37:4540     38:5369     39:871      40:143      41:4018     42:2062   
  43:2297     44:324      45:16634    46:4300     47:371      49:1838   
  50:1889     51:584      52:1594     54:389      55:933      56:5      
  57:126      58:1854     59:1181     60:1003     61:2517     62:2689   
  63:1916     64:5673     65:2358     66:5004     67:3041     68:1344   
  69:4159     70:1192     71:666      72:2939     74:2631     75:1563   
  76:634      77:2303     78:1830     79:2992     80:2092     81:1829   
  82:1520     83:1311     84:1564     85:3111     86:764      87:2001   
  88:1203     89:3926     90:623      91:7843     92:2062     93:2623   
  94:3540     95:4069     96:1302     97:315      98:1084     99:732    
 100:90      101:1047    102:2884    103:32181   104:4744    105:577    
 106:915     107:2726    108:1138    109:4235    110:2138    111:3196   
 112:2065    113:1819    114:1694    115:1985    116:1904    117:2457   
 118:2689    119:1967    120:1806    121:1190    122:2615    123:2219   
 124:1621    125:2579    128:1455    129:925     130:1048    131:1982   
 132:818     133:408     134:1785    135:306     136:971     137:973    
 138:2633    139:1610    140:1294    141:1330    142:1522    143:1559   
 144:1009    145:349     146:1960    147:1596    148:2488    149:2321   
 150:877     151:1229    152:1861    153:523     154:5105    155:1391   
 156:2009    157:1346    158:1056    159:2199    160:2644    161:1593   
 162:3520    163:1617    164:1709    165:1853    166:1084    167:1747   
 168:3849    169:808     170:4662    171:922     172:3802    173:2971   
 174:984     175:1195    176:3776    177:4486    178:3547    179:2154   
 180:2455    181:3532    182:3405    183:1979    184:2273    185:20622  
 186:4720    187:4138    188:4162    189:3877    190:9324    191:1410   
 192:10984   193:8967    194:7315    195:5227    196:3116    197:2476   
 198:6033    199:6186    200:7995    201:6156    202:10548   203:10030  
 204:4553    205:3714    206:4401    207:3513    208:4151    209:4916   
 210:4500    211:2539    212:4276    213:3377    214:1112    215:71     
 216:6727    217:2773    218:1302    219:577     220:2033    221:981    
 222:840     223:2178   

End of report


More information about the cmNOG mailing list