[lacnog] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora en apnic.net
Vie Oct 27 15:02:18 -03 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 en lists.apnic.net.

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

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

IPv4 Routing Table Report   04:00 +10GMT Sat 28 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:                              933486
    Prefixes after maximum aggregation (per Origin AS):          355172
    Deaggregation factor:                                          2.63
    Unique aggregates announced (without unneeded subnets):      454360
Total ASes present in the Internet Routing Table:                 74926
    Prefixes per ASN:                                             12.46
Origin-only ASes present in the Internet Routing Table:           64271
Origin ASes announcing only one prefix:                           26491
Transit ASes present in the Internet Routing Table:               10655
Transit-only ASes present in the Internet Routing Table:            466
Average AS path length visible in the Internet Routing Table:       4.2
    Max AS path length visible:                                     110
    Max AS path prepend of ASN ( 37447)                             103
Prefixes from unregistered ASNs in the Routing Table:              1035
    Number of instances of unregistered ASNs:                      1038
Number of 32-bit ASNs allocated by the RIRs:                      42931
Number of 32-bit ASNs visible in the Routing Table:               35242
Prefixes from 32-bit ASNs in the Routing Table:                  176650
Number of bogon 32-bit ASNs visible in the Routing Table:            23
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            522
Number of addresses announced to Internet:                   3052253184
    Equivalent to 181 /8s, 237 /16s and 176 /24s
    Percentage of available address space announced:               82.4
    Percentage of allocated address space announced:               82.4
    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:      310357

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

Prefixes being announced by APNIC Region ASes:                   247685
    Total APNIC prefixes after maximum aggregation:               71250
    APNIC Deaggregation factor:                                    3.48
Prefixes being announced from the APNIC address blocks:          241058
    Unique aggregates announced from the APNIC address blocks:    99089
APNIC Region origin ASes present in the Internet Routing Table:   13657
    APNIC Prefixes per ASN:                                       17.65
APNIC Region origin ASes announcing only one prefix:               4127
APNIC Region transit ASes present in the Internet Routing Table:   1823
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         32
Number of APNIC region 32-bit ASNs visible in the Routing Table:   8996
Number of APNIC addresses announced to Internet:              772061312
    Equivalent to 46 /8s, 4 /16s and 184 /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:                    273852
    Total ARIN prefixes after maximum aggregation:               124239
    ARIN Deaggregation factor:                                     2.20
Prefixes being announced from the ARIN address blocks:           278042
    Unique aggregates announced from the ARIN address blocks:    132470
ARIN Region origin ASes present in the Internet Routing Table:    19094
    ARIN Prefixes per ASN:                                        14.56
ARIN Region origin ASes announcing only one prefix:                6963
ARIN Region transit ASes present in the Internet Routing Table:    1971
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:              1277346304
    Equivalent to 76 /8s, 34 /16s and 194 /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:                    261730
    Total RIPE prefixes after maximum aggregation:               124378
    RIPE Deaggregation factor:                                     2.10
Prefixes being announced from the RIPE address blocks:           256575
    Unique aggregates announced from the RIPE address blocks:    160410
RIPE Region origin ASes present in the Internet Routing Table:    28464
    RIPE Prefixes per ASN:                                         9.01
RIPE Region origin ASes announcing only one prefix:               12095
RIPE Region transit ASes present in the Internet Routing Table:    3943
Average RIPE Region AS path length visible:                         4.3
    Max RIPE Region AS path length visible:                          30
Number of RIPE region 32-bit ASNs visible in the Routing Table:   11402
Number of RIPE addresses announced to Internet:               716620416
    Equivalent to 42 /8s, 182 /16s and 194 /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:                  119022
    Total LACNIC prefixes after maximum aggregation:              28594
    LACNIC Deaggregation factor:                                   4.16
Prefixes being announced from the LACNIC address blocks:         117934
    Unique aggregates announced from the LACNIC address blocks:   49302
LACNIC Region origin ASes present in the Internet Routing Table:  11044
    LACNIC Prefixes per ASN:                                      10.68
LACNIC Region origin ASes announcing only one prefix:              2681
LACNIC Region transit ASes present in the Internet Routing Table:  2358
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:  8873
Number of LACNIC addresses announced to Internet:             178300416
    Equivalent to 10 /8s, 160 /16s and 166 /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:                  30162
    Total AfriNIC prefixes after maximum aggregation:              5994
    AfriNIC Deaggregation factor:                                  5.03
Prefixes being announced from the AfriNIC address blocks:         39355
    Unique aggregates announced from the AfriNIC address blocks:  12657
AfriNIC Region origin ASes present in the Internet Routing Table:  1804
    AfriNIC Prefixes per ASN:                                     21.82
AfriNIC Region origin ASes announcing only one prefix:              625
AfriNIC Region transit ASes present in the Internet Routing Table:  348
Average AfriNIC Region AS path length visible:                      4.9
    Max AfriNIC Region AS path length visible:                      110
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1144
Number of AfriNIC addresses announced to Internet:            107500544
    Equivalent to 6 /8s, 104 /16s and 84 /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        9487       8730      43  CHINAMOBILE-CN China Mobile Communicati
  7545        5718        785     696  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4935       4192      75  ERX-CERNET-BKB China Education and Rese
 18403        4211        347      25  FPT-AS-AP FPT Telecom Company, VN
  7713        3605       1047      70  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3325       1840     100  VNPT-AS-VN VNPT Corp, VN
  9498        3230        492     239  BBIL-AP BHARTI Airtel Ltd., IN
  7552        2959       1330      20  VIETEL-AS-AP Viettel Group, VN
 24560        2558        850     376  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd
  4766        2538      11270     601  KIXS-AS-KR Korea Telecom, KR

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        9188      11027    3293  AMAZON-02, US
 11492        4538        301     673  CABLEONE, US
  7155        4173        288     100  VIASAT-SP-BACKBONE, US
  6327        3555       1320      67  SHAW, CA
 22773        3524       3056     304  ASN-CXA-ALL-CCI-22773-RDC, US
   749        3161      54958    2413  DNIC-AS-00749, US
   367        3079       3851    1436  DNIC-ASBLK-00306-00371, US
 16625        3007       1383    2291  AKAMAI-AS, US
396982        2705       3598     397  GOOGLE-CLOUD-PLATFORM, US
  7018        2542      23613    1590  ATT-INTERNET4, 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        7418       1713     145  UNI2-AS, ES
 39891        4570        271      54  ALJAWWALSTC-AS, SA
 20940        4089       3397     148  AKAMAI-ASN1, NL
  8551        3444        368      34  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
  9009        3226        285    1601  M247, RO
 12389        2968       2295     914  ROSTELECOM-AS, RU
 34984        2324        361     592  TELLCOM-AS, TR
 58224        1684        916     545  TCI, IR
 13188        1606        100      27  TRIOLAN, UA
  8452        1522       1852      14  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       11915       3370     611  UNINET, MX
 10620        3540        504     856  Telmex Colombia S.A., CO
 13999        2433        337     635  Mega Cable, S.A. de C.V., MX
 11830        2005        369      64  Instituto Costarricense de Electricidad
 28573        1331       2322     236  Claro NXT Telecomunicacoes Ltda, BR
  3816        1299        770     197  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6503        1250        342     505  Axtel, S.A.B. de C.V., MX
  6147        1109        369      22  Telefonica del Peru S.A.A., PE
 11664        1058        168     430  Techtel LMDS Comunicaciones Interactiva
 26615        1039       2501      51  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        1604        393      19  LINKdotNET-AS, EG
 24835        1549        549      28  RAYA-AS, EG
 36992        1358       1518     280  ETISALAT-MISR, EG
 36903        1248        553      98  MT-MPLS, MA
 29571        1047         67      46  ORANGE-COTE-IVOIRE, CI
 36935         938        521      44  Vodafone-, EG
  6713         551       1861      34  IAM-AS, MA
 15399         537         55      51  WANANCHI-, KE
 37342         495         32       1  MOVITEL, MZ
 24757         480         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       11915       3370     611  UNINET, MX
  9808        9487       8730      43  CHINAMOBILE-CN China Mobile Communicati
 16509        9188      11027    3293  AMAZON-02, US
 12479        7418       1713     145  UNI2-AS, ES
  7545        5718        785     696  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4935       4192      75  ERX-CERNET-BKB China Education and Rese
 39891        4570        271      54  ALJAWWALSTC-AS, SA
 11492        4538        301     673  CABLEONE, US
 18403        4211        347      25  FPT-AS-AP FPT Telecom Company, VN
  7155        4173        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        9487         9444  CHINAMOBILE-CN China Mobile Communications Grou
 12479        7418         7273  UNI2-AS, ES
 16509        9188         5895  AMAZON-02, US
  7545        5718         5022  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4935         4860  ERX-CERNET-BKB China Education and Research Net
 39891        4570         4516  ALJAWWALSTC-AS, SA
 18403        4211         4186  FPT-AS-AP FPT Telecom Company, VN
  7155        4173         4073  VIASAT-SP-BACKBONE, US
 20940        4089         3941  AKAMAI-ASN1, NL
 11492        4538         3865  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      /11:100     /12:299     
/13:582     /14:1195    /15:2061    /16:13499   /17:8329    /18:13847   
/19:25156   /20:44444   /21:51618   /22:110552  /23:99361   /24:561642  
/25:733     /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        6506        7418  UNI2-AS, ES
  8151        5953       11915  UNINET, MX
 11492        3451        4538  CABLEONE, US
  6327        3364        3555  SHAW, CA
 39891        3324        4570  ALJAWWALSTC-AS, SA
  7155        3118        4173  VIASAT-SP-BACKBONE, US
  8551        2921        3444  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 22773        2577        3524  ASN-CXA-ALL-CCI-22773-RDC, US
 30036        2154        2499  MEDIACOM-ENTERPRISE-BUSINESS, US
 10620        2114        3540  Telmex Colombia S.A., CO

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

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

   1:2243      2:1442      3:269       4:5         5:4373      6:159    
   7:6         8:1539      9:1        11:172      12:1508     13:359    
  14:2315     15:306      16:203      17:364      18:666      20:308    
  21:4        22:188      23:6501     24:2540     25:2        27:2529   
  29:19       31:2551     32:74       34:26       35:118      36:2005   
  37:4469     38:5454     39:866      40:129      41:3996     42:2050   
  43:2293     44:326      45:16755    46:4370     47:371      49:1877   
  50:1878     51:578      52:1589     54:395      55:961      56:5      
  57:127      58:1873     59:1162     60:1010     61:2526     62:2658   
  63:1908     64:5524     65:2348     66:5011     67:3052     68:1345   
  69:4138     70:1185     71:627      72:2939     74:2637     75:1564   
  76:640      77:2329     78:1827     79:3010     80:2110     81:1836   
  82:1528     83:1303     84:1552     85:3017     86:766      87:1944   
  88:1195     89:3950     90:624      91:7878     92:2077     93:2628   
  94:3577     95:3998     96:1305     97:315      98:1085     99:735    
 100:91      101:1145    102:2913    103:32033   104:4791    105:577    
 106:991     107:2787    108:1137    109:4249    110:2138    111:3173   
 112:2065    113:1817    114:1701    115:1980    116:1926    117:2448   
 118:2686    119:1962    120:1791    121:1222    122:2620    123:2220   
 124:1622    125:2627    128:1451    129:925     130:1042    131:1973   
 132:823     133:408     134:1771    135:301     136:910     137:980    
 138:2682    139:1592    140:1321    141:1328    142:1545    143:1518   
 144:1000    145:346     146:1966    147:1618    148:2463    149:2364   
 150:874     151:1241    152:1850    153:536     154:5253    155:1398   
 156:2050    157:1356    158:1061    159:2200    160:2620    161:1594   
 162:3505    163:1624    164:1696    165:1844    166:1071    167:1751   
 168:3862    169:795     170:4642    171:949     172:3880    173:3008   
 174:981     175:1191    176:3617    177:4539    178:3534    179:2134   
 180:2500    181:3590    182:3375    183:1990    184:2273    185:20630  
 186:4702    187:4192    188:4060    189:3915    190:9339    191:1412   
 192:11004   193:8966    194:7316    195:5232    196:3131    197:2564   
 198:6029    199:6383    200:8037    201:6188    202:10581   203:10015  
 204:4564    205:3689    206:4411    207:3503    208:4121    209:4917   
 210:4491    211:2540    212:4245    213:3400    214:1116    215:71     
 216:6736    217:2766    218:1308    219:583     220:2032    221:986    
 222:848     223:2176   

End of report


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