[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Dec 15 18:02:28 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 16 Dec, 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:                              937687
    Prefixes after maximum aggregation (per Origin AS):          357483
    Deaggregation factor:                                          2.62
    Unique aggregates announced (without unneeded subnets):      455760
Total ASes present in the Internet Routing Table:                 75160
    Prefixes per ASN:                                             12.48
Origin-only ASes present in the Internet Routing Table:           64490
Origin ASes announcing only one prefix:                           26529
Transit ASes present in the Internet Routing Table:               10670
Transit-only ASes present in the Internet Routing Table:            471
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:              1061
    Number of instances of unregistered ASNs:                      1063
Number of 32-bit ASNs allocated by the RIRs:                      43229
Number of 32-bit ASNs visible in the Routing Table:               35560
Prefixes from 32-bit ASNs in the Routing Table:                  178899
Number of bogon 32-bit ASNs visible in the Routing Table:            19
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            521
Number of addresses announced to Internet:                   3048297728
    Equivalent to 181 /8s, 177 /16s and 85 /24s
    Percentage of available address space announced:               82.3
    Percentage of allocated address space announced:               82.3
    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:      310922

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

Prefixes being announced by APNIC Region ASes:                   250111
    Total APNIC prefixes after maximum aggregation:               72247
    APNIC Deaggregation factor:                                    3.46
Prefixes being announced from the APNIC address blocks:          243238
    Unique aggregates announced from the APNIC address blocks:    99474
APNIC Region origin ASes present in the Internet Routing Table:   13852
    APNIC Prefixes per ASN:                                       17.56
APNIC Region origin ASes announcing only one prefix:               4169
APNIC Region transit ASes present in the Internet Routing Table:   1861
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:   9198
Number of APNIC addresses announced to Internet:              770855552
    Equivalent to 45 /8s, 242 /16s and 82 /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:                    273744
    Total ARIN prefixes after maximum aggregation:               124582
    ARIN Deaggregation factor:                                     2.20
Prefixes being announced from the ARIN address blocks:           278526
    Unique aggregates announced from the ARIN address blocks:    132774
ARIN Region origin ASes present in the Internet Routing Table:    19076
    ARIN Prefixes per ASN:                                        14.60
ARIN Region origin ASes announcing only one prefix:                6948
ARIN Region transit ASes present in the Internet Routing Table:    1954
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:    4823
Number of ARIN addresses announced to Internet:              1276324864
    Equivalent to 76 /8s, 19 /16s and 44 /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:                    262512
    Total RIPE prefixes after maximum aggregation:               125016
    RIPE Deaggregation factor:                                     2.10
Prefixes being announced from the RIPE address blocks:           256990
    Unique aggregates announced from the RIPE address blocks:    160855
RIPE Region origin ASes present in the Internet Routing Table:    28494
    RIPE Prefixes per ASN:                                         9.02
RIPE Region origin ASes announcing only one prefix:               12103
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:                          39
Number of RIPE region 32-bit ASNs visible in the Routing Table:   11485
Number of RIPE addresses announced to Internet:               714696576
    Equivalent to 42 /8s, 153 /16s and 103 /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:                  119861
    Total LACNIC prefixes after maximum aggregation:              28871
    LACNIC Deaggregation factor:                                   4.15
Prefixes being announced from the LACNIC address blocks:         118563
    Unique aggregates announced from the LACNIC address blocks:   49322
LACNIC Region origin ASes present in the Internet Routing Table:  11052
    LACNIC Prefixes per ASN:                                      10.73
LACNIC Region origin ASes announcing only one prefix:              2668
LACNIC Region transit ASes present in the Internet Routing Table:  2362
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:  8897
Number of LACNIC addresses announced to Internet:             178274560
    Equivalent to 10 /8s, 160 /16s and 65 /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:                  30398
    Total AfriNIC prefixes after maximum aggregation:              6047
    AfriNIC Deaggregation factor:                                  5.03
Prefixes being announced from the AfriNIC address blocks:         39849
    Unique aggregates announced from the AfriNIC address blocks:  12908
AfriNIC Region origin ASes present in the Internet Routing Table:  1815
    AfriNIC Prefixes per ASN:                                     21.96
AfriNIC Region origin ASes announcing only one prefix:              641
AfriNIC Region transit ASes present in the Internet Routing Table:  351
Average AfriNIC Region AS path length visible:                      4.9
    Max AfriNIC Region AS path length visible:                       27
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1157
Number of AfriNIC addresses announced to Internet:            107784192
    Equivalent to 6 /8s, 108 /16s and 168 /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        9791       8732      46  CHINAMOBILE-CN China Mobile Communicati
  7545        5662        783     678  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4924       4192      75  ERX-CERNET-BKB China Education and Rese
 18403        4436        347      25  FPT-AS-AP FPT Telecom Company, VN
  7713        3596       1043      64  TELKOMNET-AS-AP PT Telekomunikasi Indon
  9498        3392        495     254  BBIL-AP BHARTI Airtel Ltd., IN
 45899        3267       1872      99  VNPT-AS-VN VNPT Corp, VN
  7552        3011       1330      20  VIETEL-AS-AP Viettel Group, VN
 24560        2644        854     364  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd
  4766        2485      11259     585  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        9391      11181    3409  AMAZON-02, US
 11492        4562        303     680  CABLEONE, US
  7155        4176        288      96  VIASAT-SP-BACKBONE, US
  6327        3567       1320      69  SHAW, CA
 22773        3479       3054     297  ASN-CXA-ALL-CCI-22773-RDC, US
 16625        3171       1412    2329  AKAMAI-AS, US
   749        3162      54930    2414  DNIC-AS-00749, US
   367        2949       3838    1406  DNIC-ASBLK-00306-00371, US
396982        2736       3637     383  GOOGLE-CLOUD-PLATFORM, US
  7018        2573      23627    1591  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        7585       1714     146  UNI2-AS, ES
 39891        4570        271      54  ALJAWWALSTC-AS, SA
 20940        3995       3397     142  AKAMAI-ASN1, NL
  9009        3492        300    1631  M247, RO
  8551        3356        368      34  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2982       2301     911  ROSTELECOM-AS, RU
 34984        2326        360     590  TELLCOM-AS, TR
 13188        1607        100      26  TRIOLAN, UA
 58224        1595        888     593  TCI, IR
  8452        1539       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       12135       3379     595  UNINET, MX
 10620        3518        496     885  Telmex Colombia S.A., CO
 13999        2490        339     634  Mega Cable, S.A. de C.V., MX
 11830        2005        369      64  Instituto Costarricense de Electricidad
 28573        1345       2318     237  Claro NXT Telecomunicacoes Ltda, BR
  3816        1306        787     197  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6503        1245        341     503  Axtel, S.A.B. de C.V., MX
 11664        1092        177     432  Techtel LMDS Comunicaciones Interactiva
  6147        1085        369      22  Telefonica del Peru S.A.A., PE
 22884        1075        116     379  TOTAL PLAY TELECOMUNICACIONES SA DE CV,

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        1582        389      16  LINKdotNET-AS, EG
 24835        1548        545      28  RAYA-AS, EG
 36992        1359       1518     280  ETISALAT-MISR, EG
 36903        1249        554      96  MT-MPLS, MA
 29571        1049         68      52  ORANGE-COTE-IVOIRE, CI
 36935         936        521      43  Vodafone-, EG
  6713         550       1861      34  IAM-AS, MA
 36914         534         82       3  KENET-AS, KE
 15399         533         55      54  WANANCHI-, KE
 24757         476         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       12135       3379     595  UNINET, MX
  9808        9791       8732      46  CHINAMOBILE-CN China Mobile Communicati
 16509        9391      11181    3409  AMAZON-02, US
 12479        7585       1714     146  UNI2-AS, ES
  7545        5662        783     678  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4924       4192      75  ERX-CERNET-BKB China Education and Rese
 39891        4570        271      54  ALJAWWALSTC-AS, SA
 11492        4562        303     680  CABLEONE, US
 18403        4436        347      25  FPT-AS-AP FPT Telecom Company, VN
  7155        4176        288      96  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        9791         9745  CHINAMOBILE-CN China Mobile Communications Grou
 12479        7585         7439  UNI2-AS, ES
 16509        9391         5982  AMAZON-02, US
  7545        5662         4984  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4924         4849  ERX-CERNET-BKB China Education and Research Net
 39891        4570         4516  ALJAWWALSTC-AS, SA
 18403        4436         4411  FPT-AS-AP FPT Telecom Company, VN
  7155        4176         4080  VIASAT-SP-BACKBONE, US
 11492        4562         3882  CABLEONE, US
 20940        3995         3853  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
     65536  DOCUMENT     5.102.30.0/24            65512  -Private Use AS-, ZZ
     33492  UNALLOCATED  8.6.184.0/23             33650  COMCAST-33650, US
     33123  UNALLOCATED  8.10.69.0/24               174  COGENT-174, 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
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
41.57.124.0/22       Origin:     37442  RESERVED, ZZ
41.57.124.0/22      Transit:     37204  TELONE, ZW

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      /11:99      /12:298     
/13:582     /14:1193    /15:2063    /16:13460   /17:8281    /18:13835   
/19:25158   /20:44434   /21:51668   /22:110804  /23:99672   /24:565340  
/25:732     /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        6671        7585  UNI2-AS, ES
  8151        6152       12135  UNINET, MX
 11492        3476        4562  CABLEONE, US
  6327        3371        3567  SHAW, CA
 39891        3324        4570  ALJAWWALSTC-AS, SA
  7155        3120        4176  VIASAT-SP-BACKBONE, US
  8551        2833        3356  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 22773        2534        3479  ASN-CXA-ALL-CCI-22773-RDC, US
 30036        2137        2483  MEDIACOM-ENTERPRISE-BUSINESS, US
 10620        2121        3518  Telmex Colombia S.A., CO

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

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

   1:2271      2:1413      3:282       4:5         5:4393      6:162    
   7:6         8:1536      9:1        11:172      12:1489     13:371    
  14:2327     15:305      16:207      17:362      18:701      20:343    
  21:4        22:188      23:6577     24:2605     25:2        27:2509   
  29:19       31:2540     32:56       34:36       35:119      36:2089   
  37:4496     38:5735     39:881      40:147      41:4106     42:2143   
  43:2327     44:327      45:16711    46:4397     47:286      49:1910   
  50:1893     51:573      52:1595     54:382      55:875      56:5      
  57:128      58:1926     59:1176     60:1009     61:2569     62:2744   
  63:1911     64:5488     65:2347     66:5007     67:3038     68:1330   
  69:4055     70:1172     71:608      72:2932     74:2646     75:1551   
  76:630      77:2336     78:1821     79:3003     80:2099     81:1874   
  82:1525     83:1325     84:1630     85:2983     86:788      87:1974   
  88:1232     89:3948     90:650      91:7889     92:2182     93:2640   
  94:3588     95:4001     96:1298     97:316      98:1020     99:747    
 100:95      101:1151    102:3008    103:32517   104:4786    105:600    
 106:989     107:2760    108:1141    109:4175    110:2140    111:3203   
 112:2083    113:1777    114:1756    115:1963    116:1952    117:2498   
 118:2756    119:1949    120:1806    121:1302    122:2655    123:2217   
 124:1646    125:2782    128:1485    129:920     130:1060    131:1980   
 132:828     133:411     134:1708    135:295     136:911     137:985    
 138:2716    139:1568    140:1382    141:1356    142:1542    143:1532   
 144:1006    145:336     146:1997    147:1648    148:2488    149:2400   
 150:1013    151:1315    152:1848    153:529     154:5369    155:1377   
 156:2124    157:1367    158:1088    159:2206    160:2625    161:1615   
 162:3591    163:1645    164:1632    165:1864    166:1096    167:1750   
 168:3844    169:791     170:4704    171:975     172:3756    173:3031   
 174:904     175:1213    176:3606    177:4640    178:3529    179:2237   
 180:2334    181:3612    182:3446    183:2021    184:2269    185:20488  
 186:4755    187:4268    188:3999    189:3947    190:9297    191:1492   
 192:11003   193:9001    194:7348    195:5224    196:3136    197:2643   
 198:6019    199:6759    200:8070    201:6228    202:10561   203:10067  
 204:4592    205:3687    206:4459    207:3492    208:4102    209:4941   
 210:4590    211:2578    212:4212    213:3370    214:1119    215:49     
 216:6770    217:2771    218:1325    219:587     220:2027    221:1018   
 222:881     223:2223   

End of report


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