[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Jul 21 18:02:09 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 22 Jul, 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:                              927100
    Prefixes after maximum aggregation (per Origin AS):          351578
    Deaggregation factor:                                          2.64
    Unique aggregates announced (without unneeded subnets):      452379
Total ASes present in the Internet Routing Table:                 74596
    Prefixes per ASN:                                             12.43
Origin-only ASes present in the Internet Routing Table:           64039
Origin ASes announcing only one prefix:                           26302
Transit ASes present in the Internet Routing Table:               10557
Transit-only ASes present in the Internet Routing Table:            450
Average AS path length visible in the Internet Routing Table:       4.3
    Max AS path length visible:                                      68
    Max AS path prepend of ASN (263725)                              64
Prefixes from unregistered ASNs in the Routing Table:              1101
    Number of instances of unregistered ASNs:                      1103
Number of 32-bit ASNs allocated by the RIRs:                      42276
Number of 32-bit ASNs visible in the Routing Table:               34837
Prefixes from 32-bit ASNs in the Routing Table:                  173955
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:            611
Number of addresses announced to Internet:                   3054068736
    Equivalent to 182 /8s, 9 /16s and 100 /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:               99.6
Total number of prefixes smaller than registry allocations:      308840

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

Prefixes being announced by APNIC Region ASes:                   246161
    Total APNIC prefixes after maximum aggregation:               70004
    APNIC Deaggregation factor:                                    3.52
Prefixes being announced from the APNIC address blocks:          239893
    Unique aggregates announced from the APNIC address blocks:    98720
APNIC Region origin ASes present in the Internet Routing Table:   13527
    APNIC Prefixes per ASN:                                       17.73
APNIC Region origin ASes announcing only one prefix:               4004
APNIC Region transit ASes present in the Internet Routing Table:   1797
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         28
Number of APNIC region 32-bit ASNs visible in the Routing Table:   8850
Number of APNIC addresses announced to Internet:              773626240
    Equivalent to 46 /8s, 28 /16s and 153 /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:                    271793
    Total ARIN prefixes after maximum aggregation:               123669
    ARIN Deaggregation factor:                                     2.20
Prefixes being announced from the ARIN address blocks:           274020
    Unique aggregates announced from the ARIN address blocks:    130777
ARIN Region origin ASes present in the Internet Routing Table:    19095
    ARIN Prefixes per ASN:                                        14.35
ARIN Region origin ASes announcing only one prefix:                6959
ARIN Region transit ASes present in the Internet Routing Table:    1953
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:    4818
Number of ARIN addresses announced to Internet:              1277193984
    Equivalent to 76 /8s, 32 /16s and 111 /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:                    260013
    Total RIPE prefixes after maximum aggregation:               122678
    RIPE Deaggregation factor:                                     2.12
Prefixes being announced from the RIPE address blocks:           256847
    Unique aggregates announced from the RIPE address blocks:    160046
RIPE Region origin ASes present in the Internet Routing Table:    28352
    RIPE Prefixes per ASN:                                         9.06
RIPE Region origin ASes announcing only one prefix:               12035
RIPE Region transit ASes present in the Internet Routing Table:    3944
Average RIPE Region AS path length visible:                         4.2
    Max RIPE Region AS path length visible:                          34
Number of RIPE region 32-bit ASNs visible in the Routing Table:   11247
Number of RIPE addresses announced to Internet:               716894592
    Equivalent to 42 /8s, 186 /16s and 241 /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:                  118670
    Total LACNIC prefixes after maximum aggregation:              28610
    LACNIC Deaggregation factor:                                   4.15
Prefixes being announced from the LACNIC address blocks:         117785
    Unique aggregates announced from the LACNIC address blocks:   49635
LACNIC Region origin ASes present in the Internet Routing Table:  11009
    LACNIC Prefixes per ASN:                                      10.70
LACNIC Region origin ASes announcing only one prefix:              2693
LACNIC Region transit ASes present in the Internet Routing Table:  2334
Average LACNIC Region AS path length visible:                       4.9
    Max LACNIC Region AS path length visible:                        68
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8811
Number of LACNIC addresses announced to Internet:             178450944
    Equivalent to 10 /8s, 162 /16s and 242 /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:                  29362
    Total AfriNIC prefixes after maximum aggregation:              5893
    AfriNIC Deaggregation factor:                                  4.98
Prefixes being announced from the AfriNIC address blocks:         37944
    Unique aggregates announced from the AfriNIC address blocks:  12692
AfriNIC Region origin ASes present in the Internet Routing Table:  1765
    AfriNIC Prefixes per ASN:                                     21.50
AfriNIC Region origin ASes announcing only one prefix:              611
AfriNIC Region transit ASes present in the Internet Routing Table:  326
Average AfriNIC Region AS path length visible:                      4.8
    Max AfriNIC Region AS path length visible:                       40
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1111
Number of AfriNIC addresses announced to Internet:            107557632
    Equivalent to 6 /8s, 105 /16s and 51 /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        9527       8706      40  CHINAMOBILE-CN China Mobile Communicati
  7545        5686        784     692  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4857       4192      75  ERX-CERNET-BKB China Education and Rese
 18403        4241        347      25  FPT-AS-AP FPT Telecom Company, VN
  7713        3588       1043      63  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3381       1856      96  VNPT-AS-VN VNPT Corp, VN
  7552        3345       1331      21  VIETEL-AS-AP Viettel Group, VN
  9498        3048        497     247  BBIL-AP BHARTI Airtel Ltd., IN
  4766        2545      11271     592  KIXS-AS-KR Korea Telecom, KR
 24560        2452        835     443  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        8701      10914    3133  AMAZON-02, US
 11492        4516        300     615  CABLEONE, US
  7155        4194        289     101  VIASAT-SP-BACKBONE, US
 22773        3542       3054     269  ASN-CXA-ALL-CCI-22773-RDC, US
  6327        3525       1319      66  SHAW, CA
 16625        3168       1577    2375  AKAMAI-AS, US
   749        3140      54962    2392  DNIC-AS-00749, US
   367        2762       3753    1322  DNIC-ASBLK-00306-00371, US
396982        2677       3595     383  GOOGLE-CLOUD-PLATFORM, US
 30036        2514        362     355  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        7299       1706     141  UNI2-AS, ES
 39891        4897        290      61  ALJAWWALSTC-AS, SA
 20940        4092       3398     161  AKAMAI-ASN1, NL
  8551        3461        368      33  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2971       2294     913  ROSTELECOM-AS, RU
  9009        2660        246    1381  M247, RO
 34984        2313        361     608  TELLCOM-AS, TR
 58224        1824        944     540  TCI, IR
  6849        1798        307      17  UKRTELNET, UA
 13188        1606        100      27  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       11606       3358     592  UNINET, MX
 10620        3529        507     836  Telmex Colombia S.A., CO
 13999        2409        361     631  Mega Cable, S.A. de C.V., MX
 11830        2107        369      64  Instituto Costarricense de Electricidad
 28573        1317       2322     238  Claro NXT Telecomunicacoes Ltda, BR
  3816        1300        767     172  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6503        1300        344     511  Axtel, S.A.B. de C.V., MX
  6147        1130        370      22  Telefonica del Peru S.A.A., PE
 11664        1104        177     436  Techtel LMDS Comunicaciones Interactiva
 26615        1038       2500      48  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        1517        533      27  RAYA-AS, EG
 36992        1296       1518     282  ETISALAT-MISR, EG
 36903        1242        550      99  MT-MPLS, MA
 29571        1052         67      45  ORANGE-COTE-IVOIRE, CI
 36935         922        521      43  Vodafone-, EG
  6713         551       1861      34  IAM-AS, MA
 37342         505         32       1  MOVITEL, MZ
 24757         485         73       5  EthioNet-AS, ET
 15399         458         54      50  WANANCHI-, KE

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       11606       3358     592  UNINET, MX
  9808        9527       8706      40  CHINAMOBILE-CN China Mobile Communicati
 16509        8701      10914    3133  AMAZON-02, US
 12479        7299       1706     141  UNI2-AS, ES
  7545        5686        784     692  TPG-INTERNET-AP TPG Telecom Limited, AU
 39891        4897        290      61  ALJAWWALSTC-AS, SA
  4538        4857       4192      75  ERX-CERNET-BKB China Education and Rese
 11492        4516        300     615  CABLEONE, US
 18403        4241        347      25  FPT-AS-AP FPT Telecom Company, VN
  7155        4194        289     101  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        9527         9487  CHINAMOBILE-CN China Mobile Communications Grou
 12479        7299         7158  UNI2-AS, ES
 16509        8701         5568  AMAZON-02, US
  7545        5686         4994  TPG-INTERNET-AP TPG Telecom Limited, AU
 39891        4897         4836  ALJAWWALSTC-AS, SA
  4538        4857         4782  ERX-CERNET-BKB China Education and Research Net
 18403        4241         4216  FPT-AS-AP FPT Telecom Company, VN
  7155        4194         4093  VIASAT-SP-BACKBONE, US
 20940        4092         3931  AKAMAI-ASN1, NL
 11492        4516         3901  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
     53775  UNALLOCATED  8.20.88.0/24              7029  WINDSTREAM, US
     19695  UNALLOCATED  8.20.161.0/24             7015  COMCAST-7015, 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  UNASSIGNED
23.141.0.0/24       Transit:     11426  TWC-11426-CAROLINAS, US
23.158.88.0/24       Origin:     20473  AS-CHOOPA, US
23.158.88.0/24      Transit:      3257  GTT-BACKBONE GTT, US
23.176.160.0/24      Origin:    397327  UNASSIGNED
23.176.160.0/24     Transit:     19108  SUDDENLINK-COMMUNICATIONS, US
27.100.7.0/24        Origin:     56096  UNASSIGNED
27.100.7.0/24       Transit:     45455  TH-2S1N-AP Two S One N Co Ltd, Internet 

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      /10:39      /11:102     /12:296     
/13:576     /14:1198    /15:2073    /16:13485   /17:8280    /18:13845   
/19:25211   /20:44431   /21:51530   /22:110165  /23:98844   /24:556249  
/25:746     /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        6387        7299  UNI2-AS, ES
  8151        5540       11606  UNINET, MX
 39891        3632        4897  ALJAWWALSTC-AS, SA
 11492        3425        4516  CABLEONE, US
  6327        3335        3525  SHAW, CA
  7155        3139        4194  VIASAT-SP-BACKBONE, US
  8551        2930        3461  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 22773        2607        3542  ASN-CXA-ALL-CCI-22773-RDC, US
 30036        2169        2514  MEDIACOM-ENTERPRISE-BUSINESS, US
 10620        2088        3529  Telmex Colombia S.A., CO

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

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

   1:2210      2:1354      3:230       4:5         5:4499      6:131    
   7:6         8:1552      9:1        11:172      12:1522     13:379    
  14:2321     15:301      16:198      17:374      18:523      20:268    
  21:4        22:188      23:6374     24:2614     25:4        27:2489   
  29:19       31:2530     32:81       34:25       35:114      36:1983   
  37:4694     38:5030     39:829      40:152      41:3844     42:2026   
  43:2326     44:303      45:16675    46:4376     47:377      49:1773   
  50:1856     51:584      52:1592     54:397      55:975      56:8      
  57:120      58:1891     59:1147     60:984      61:2498     62:2658   
  63:1922     64:5571     65:2316     66:4948     67:3049     68:1328   
  69:4092     70:1210     71:677      72:2984     74:2648     75:1581   
  76:617      77:2447     78:1826     79:2977     80:2110     81:1804   
  82:1491     83:1271     84:1539     85:2983     86:765      87:1992   
  88:1185     89:3837     90:613      91:7795     92:2049     93:2605   
  94:3580     95:4047     96:1306     97:331      98:1149     99:734    
 100:95      101:1082    102:2813    103:31766   104:4577    105:501    
 106:887     107:2556    108:1078    109:4252    110:2111    111:3188   
 112:2060    113:1811    114:1643    115:1970    116:1912    117:2516   
 118:2633    119:1983    120:1817    121:1138    122:2573    123:2184   
 124:1614    125:2498    128:1426    129:1047    130:1015    131:1967   
 132:813     133:422     134:1801    135:307     136:888     137:962    
 138:2505    139:1584    140:1259    141:1300    142:1476    143:1493   
 144:987     145:341     146:1959    147:1611    148:2430    149:2164   
 150:882     151:1166    152:1832    153:500     154:4683    155:1368   
 156:1882    157:1320    158:1098    159:2270    160:2585    161:1554   
 162:3513    163:1566    164:1669    165:1854    166:1067    167:1729   
 168:3882    169:940     170:4597    171:891     172:3647    173:2974   
 174:1047    175:1192    176:3739    177:4496    178:3614    179:2157   
 180:2455    181:3493    182:3443    183:1983    184:2314    185:20517  
 186:4754    187:4103    188:4127    189:3718    190:9244    191:1391   
 192:10936   193:8931    194:7321    195:5173    196:3115    197:2292   
 198:6013    199:6090    200:8061    201:5932    202:10593   203:10131  
 204:4572    205:3679    206:4356    207:3457    208:4143    209:4927   
 210:4474    211:2532    212:4255    213:3587    214:1092    215:60     
 216:6669    217:2752    218:1277    219:584     220:2006    221:961    
 222:854     223:2188   

End of report


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