[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Nov 10 18:02:14 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 11 Nov, 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:                              935006
    Prefixes after maximum aggregation (per Origin AS):          355778
    Deaggregation factor:                                          2.63
    Unique aggregates announced (without unneeded subnets):      454622
Total ASes present in the Internet Routing Table:                 75042
    Prefixes per ASN:                                             12.46
Origin-only ASes present in the Internet Routing Table:           64403
Origin ASes announcing only one prefix:                           26462
Transit ASes present in the Internet Routing Table:               10639
Transit-only ASes present in the Internet Routing Table:            480
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:              1071
    Number of instances of unregistered ASNs:                      1077
Number of 32-bit ASNs allocated by the RIRs:                      43033
Number of 32-bit ASNs visible in the Routing Table:               35370
Prefixes from 32-bit ASNs in the Routing Table:                  177646
Number of bogon 32-bit ASNs visible in the Routing Table:            32
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            511
Number of addresses announced to Internet:                   3051023104
    Equivalent to 181 /8s, 218 /16s and 235 /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:      310908

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

Prefixes being announced by APNIC Region ASes:                   248524
    Total APNIC prefixes after maximum aggregation:               71578
    APNIC Deaggregation factor:                                    3.47
Prefixes being announced from the APNIC address blocks:          241689
    Unique aggregates announced from the APNIC address blocks:    98997
APNIC Region origin ASes present in the Internet Routing Table:   13744
    APNIC Prefixes per ASN:                                       17.59
APNIC Region origin ASes announcing only one prefix:               4126
APNIC Region transit ASes present in the Internet Routing Table:   1842
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:   9077
Number of APNIC addresses announced to Internet:              772185472
    Equivalent to 46 /8s, 6 /16s and 157 /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:                    273613
    Total ARIN prefixes after maximum aggregation:               124339
    ARIN Deaggregation factor:                                     2.20
Prefixes being announced from the ARIN address blocks:           278141
    Unique aggregates announced from the ARIN address blocks:    132362
ARIN Region origin ASes present in the Internet Routing Table:    19066
    ARIN Prefixes per ASN:                                        14.59
ARIN Region origin ASes announcing only one prefix:                6939
ARIN Region transit ASes present in the Internet Routing Table:    1955
Average ARIN Region AS path length visible:                         3.7
    Max ARIN Region AS path length visible:                          25
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4822
Number of ARIN addresses announced to Internet:              1277098496
    Equivalent to 76 /8s, 30 /16s and 250 /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:                    262130
    Total RIPE prefixes after maximum aggregation:               124509
    RIPE Deaggregation factor:                                     2.11
Prefixes being announced from the RIPE address blocks:           256809
    Unique aggregates announced from the RIPE address blocks:    160658
RIPE Region origin ASes present in the Internet Routing Table:    28492
    RIPE Prefixes per ASN:                                         9.01
RIPE Region origin ASes announcing only one prefix:               12103
RIPE Region transit ASes present in the Internet Routing Table:    3948
Average RIPE Region AS path length visible:                         4.3
    Max RIPE Region AS path length visible:                          36
Number of RIPE region 32-bit ASNs visible in the Routing Table:   11443
Number of RIPE addresses announced to Internet:               715368320
    Equivalent to 42 /8s, 163 /16s and 167 /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:                  119600
    Total LACNIC prefixes after maximum aggregation:              28609
    LACNIC Deaggregation factor:                                   4.18
Prefixes being announced from the LACNIC address blocks:         118470
    Unique aggregates announced from the LACNIC address blocks:   49382
LACNIC Region origin ASes present in the Internet Routing Table:  11049
    LACNIC Prefixes per ASN:                                      10.72
LACNIC Region origin ASes announcing only one prefix:              2665
LACNIC Region transit ASes present in the Internet Routing Table:  2337
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:  8879
Number of LACNIC addresses announced to Internet:             178404608
    Equivalent to 10 /8s, 162 /16s and 61 /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:                  30068
    Total AfriNIC prefixes after maximum aggregation:              6014
    AfriNIC Deaggregation factor:                                  5.00
Prefixes being announced from the AfriNIC address blocks:         39386
    Unique aggregates announced from the AfriNIC address blocks:  12797
AfriNIC Region origin ASes present in the Internet Routing Table:  1808
    AfriNIC Prefixes per ASN:                                     21.78
AfriNIC Region origin ASes announcing only one prefix:              629
AfriNIC Region transit ASes present in the Internet Routing Table:  347
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: 1149
Number of AfriNIC addresses announced to Internet:            107544064
    Equivalent to 6 /8s, 104 /16s and 254 /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        9716       8730      43  CHINAMOBILE-CN China Mobile Communicati
  7545        5716        786     692  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4921       4192      75  ERX-CERNET-BKB China Education and Rese
 18403        4255        347      25  FPT-AS-AP FPT Telecom Company, VN
  7713        3604       1047      70  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3260       1872      99  VNPT-AS-VN VNPT Corp, VN
  9498        3251        491     240  BBIL-AP BHARTI Airtel Ltd., IN
  7552        2976       1330      20  VIETEL-AS-AP Viettel Group, VN
 24560        2580        851     375  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd
  4766        2536      11270     600  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        9176      11051    3360  AMAZON-02, US
 11492        4550        302     673  CABLEONE, US
  7155        4174        288     100  VIASAT-SP-BACKBONE, US
  6327        3554       1320      67  SHAW, CA
 22773        3510       3055     301  ASN-CXA-ALL-CCI-22773-RDC, US
   749        3160      54933    2412  DNIC-AS-00749, US
 16625        3114       1382    2295  AKAMAI-AS, US
   367        3039       3870    1438  DNIC-ASBLK-00306-00371, US
396982        2720       3626     394  GOOGLE-CLOUD-PLATFORM, US
  7018        2522      23616    1600  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        7434       1713     145  UNI2-AS, ES
 39891        4570        271      54  ALJAWWALSTC-AS, SA
 20940        4006       3397     141  AKAMAI-ASN1, NL
  8551        3443        368      34  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
  9009        3418        296    1593  M247, RO
 12389        2971       2295     914  ROSTELECOM-AS, RU
 34984        2323        361     591  TELLCOM-AS, TR
 58224        1661        913     572  TCI, IR
 13188        1607        100      26  TRIOLAN, UA
  8452        1518       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       12000       3371     600  UNINET, MX
 10620        3541        504     860  Telmex Colombia S.A., CO
 13999        2444        333     634  Mega Cable, S.A. de C.V., MX
 11830        2006        369      64  Instituto Costarricense de Electricidad
 28573        1332       2322     236  Claro NXT Telecomunicacoes Ltda, BR
  3816        1297        778     195  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6503        1250        342     505  Axtel, S.A.B. de C.V., MX
  6147        1105        369      22  Telefonica del Peru S.A.A., PE
 11664        1056        168     431  Techtel LMDS Comunicaciones Interactiva
 26615        1038       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        1611        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        1045         67      53  ORANGE-COTE-IVOIRE, CI
 36935         935        521      43  Vodafone-, EG
  6713         552       1861      34  IAM-AS, MA
 15399         521         54      46  WANANCHI-, KE
 37342         493         32       1  MOVITEL, MZ
 24757         461         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       12000       3371     600  UNINET, MX
  9808        9716       8730      43  CHINAMOBILE-CN China Mobile Communicati
 16509        9176      11051    3360  AMAZON-02, US
 12479        7434       1713     145  UNI2-AS, ES
  7545        5716        786     692  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4921       4192      75  ERX-CERNET-BKB China Education and Rese
 39891        4570        271      54  ALJAWWALSTC-AS, SA
 11492        4550        302     673  CABLEONE, US
 18403        4255        347      25  FPT-AS-AP FPT Telecom Company, VN
  7155        4174        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        9716         9673  CHINAMOBILE-CN China Mobile Communications Grou
 12479        7434         7289  UNI2-AS, ES
 16509        9176         5816  AMAZON-02, US
  7545        5716         5024  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4921         4846  ERX-CERNET-BKB China Education and Research Net
 39891        4570         4516  ALJAWWALSTC-AS, SA
 18403        4255         4230  FPT-AS-AP FPT Telecom Company, VN
  7155        4174         4074  VIASAT-SP-BACKBONE, US
 11492        4550         3877  CABLEONE, US
 20940        4006         3865  AKAMAI-ASN1, NL

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
    216013  UNALLOCATED  2.57.240.0/24            20473  AS-CHOOPA, 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            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

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    /15:2060    /16:13478   /17:8334    /18:13826   
/19:25156   /20:44401   /21:51568   /22:110631  /23:99458   /24:563121  
/25:729     /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        6524        7434  UNI2-AS, ES
  8151        6024       12000  UNINET, MX
 11492        3463        4550  CABLEONE, US
  6327        3364        3554  SHAW, CA
 39891        3324        4570  ALJAWWALSTC-AS, SA
  7155        3119        4174  VIASAT-SP-BACKBONE, US
  8551        2920        3443  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 22773        2564        3510  ASN-CXA-ALL-CCI-22773-RDC, US
 30036        2140        2485  MEDIACOM-ENTERPRISE-BUSINESS, US
 10620        2115        3541  Telmex Colombia S.A., CO

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

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

   1:2250      2:1437      3:271       4:5         5:4378      6:161    
   7:6         8:1538      9:1        11:172      12:1495     13:354    
  14:2319     15:304      16:202      17:364      18:671      20:317    
  21:4        22:188      23:6520     24:2560     25:2        27:2526   
  29:19       31:2560     32:61       34:29       35:118      36:2023   
  37:4461     38:5563     39:866      40:149      41:3971     42:2079   
  43:2302     44:329      45:16828    46:4391     47:372      49:1871   
  50:1888     51:575      52:1587     54:392      55:885      56:5      
  57:127      58:1884     59:1173     60:1012     61:2567     62:2699   
  63:1904     64:5502     65:2329     66:5015     67:3060     68:1350   
  69:4126     70:1179     71:605      72:2926     74:2641     75:1567   
  76:636      77:2336     78:1828     79:3014     80:2109     81:1852   
  82:1525     83:1305     84:1616     85:2993     86:754      87:1941   
  88:1229     89:3954     90:627      91:7878     92:2134     93:2638   
  94:3583     95:3999     96:1300     97:315      98:1078     99:735    
 100:91      101:1150    102:2958    103:32269   104:4824    105:574    
 106:986     107:2789    108:1140    109:4224    110:2133    111:3196   
 112:2077    113:1743    114:1712    115:1987    116:1938    117:2495   
 118:2717    119:1942    120:1804    121:1247    122:2627    123:2230   
 124:1622    125:2654    128:1478    129:923     130:1056    131:1997   
 132:822     133:408     134:1698    135:301     136:907     137:988    
 138:2720    139:1578    140:1331    141:1330    142:1553    143:1524   
 144:1007    145:343     146:1969    147:1628    148:2465    149:2341   
 150:877     151:1250    152:1844    153:536     154:5332    155:1388   
 156:2106    157:1355    158:1051    159:2201    160:2620    161:1600   
 162:3526    163:1616    164:1660    165:1853    166:1078    167:1752   
 168:3868    169:793     170:4682    171:957     172:3872    173:2996   
 174:957     175:1193    176:3625    177:4649    178:3523    179:2224   
 180:2264    181:3581    182:3414    183:1999    184:2270    185:20661  
 186:4773    187:4238    188:4058    189:3964    190:9314    191:1472   
 192:11013   193:8983    194:7313    195:5132    196:3128    197:2497   
 198:6020    199:6464    200:8057    201:6257    202:10604   203:10033  
 204:4555    205:3699    206:4438    207:3527    208:4129    209:4930   
 210:4520    211:2554    212:4257    213:3410    214:1116    215:71     
 216:6710    217:2779    218:1323    219:582     220:2034    221:1006   
 222:860     223:2218   

End of report


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