[menog] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Apr 21 18:03:31 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 Apr, 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:                              918940
    Prefixes after maximum aggregation (per Origin AS):          348842
    Deaggregation factor:                                          2.63
    Unique aggregates announced (without unneeded subnets):      448780
Total ASes present in the Internet Routing Table:                 74349
    Prefixes per ASN:                                             12.36
Origin-only ASes present in the Internet Routing Table:           63776
Origin ASes announcing only one prefix:                           26197
Transit ASes present in the Internet Routing Table:               10573
Transit-only ASes present in the Internet Routing Table:            439
Average AS path length visible in the Internet Routing Table:       4.3
    Max AS path length visible:                                      55
    Max AS path prepend of ASN (265020)                              50
Prefixes from unregistered ASNs in the Routing Table:              1361
    Number of instances of unregistered ASNs:                      1361
Number of 32-bit ASNs allocated by the RIRs:                      41703
Number of 32-bit ASNs visible in the Routing Table:               34496
Prefixes from 32-bit ASNs in the Routing Table:                  170505
Number of bogon 32-bit ASNs visible in the Routing Table:            13
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            857
Number of addresses announced to Internet:                   3061027072
    Equivalent to 182 /8s, 115 /16s and 145 /24s
    Percentage of available address space announced:               82.7
    Percentage of allocated address space announced:               82.7
    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:      307074

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

Prefixes being announced by APNIC Region ASes:                   242581
    Total APNIC prefixes after maximum aggregation:               69276
    APNIC Deaggregation factor:                                    3.50
Prefixes being announced from the APNIC address blocks:          236874
    Unique aggregates announced from the APNIC address blocks:    97897
APNIC Region origin ASes present in the Internet Routing Table:   13392
    APNIC Prefixes per ASN:                                       17.69
APNIC Region origin ASes announcing only one prefix:               3937
APNIC Region transit ASes present in the Internet Routing Table:   1801
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         32
Number of APNIC region 32-bit ASNs visible in the Routing Table:   8693
Number of APNIC addresses announced to Internet:              773697152
    Equivalent to 46 /8s, 29 /16s and 174 /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, 131072-151865
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:                    268810
    Total ARIN prefixes after maximum aggregation:               122340
    ARIN Deaggregation factor:                                     2.20
Prefixes being announced from the ARIN address blocks:           271345
    Unique aggregates announced from the ARIN address blocks:    130919
ARIN Region origin ASes present in the Internet Routing Table:    19084
    ARIN Prefixes per ASN:                                        14.22
ARIN Region origin ASes announcing only one prefix:                6957
ARIN Region transit ASes present in the Internet Routing Table:    1960
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:    4790
Number of ARIN addresses announced to Internet:              1284384768
    Equivalent to 76 /8s, 142 /16s and 40 /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:                    259272
    Total RIPE prefixes after maximum aggregation:               122099
    RIPE Deaggregation factor:                                     2.12
Prefixes being announced from the RIPE address blocks:           255283
    Unique aggregates announced from the RIPE address blocks:    157840
RIPE Region origin ASes present in the Internet Routing Table:    28311
    RIPE Prefixes per ASN:                                         9.02
RIPE Region origin ASes announcing only one prefix:               12055
RIPE Region transit ASes present in the Internet Routing Table:    3968
Average RIPE Region AS path length visible:                         4.2
    Max RIPE Region AS path length visible:                          30
Number of RIPE region 32-bit ASNs visible in the Routing Table:   11152
Number of RIPE addresses announced to Internet:               717903232
    Equivalent to 42 /8s, 202 /16s and 85 /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:                  117706
    Total LACNIC prefixes after maximum aggregation:              28516
    LACNIC Deaggregation factor:                                   4.13
Prefixes being announced from the LACNIC address blocks:         116976
    Unique aggregates announced from the LACNIC address blocks:   49247
LACNIC Region origin ASes present in the Internet Routing Table:  10982
    LACNIC Prefixes per ASN:                                      10.65
LACNIC Region origin ASes announcing only one prefix:              2638
LACNIC Region transit ASes present in the Internet Routing Table:  2301
Average LACNIC Region AS path length visible:                       5.0
    Max LACNIC Region AS path length visible:                        55
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8773
Number of LACNIC addresses announced to Internet:             176780544
    Equivalent to 10 /8s, 137 /16s and 117 /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:                  29210
    Total AfriNIC prefixes after maximum aggregation:              5806
    AfriNIC Deaggregation factor:                                  5.03
Prefixes being announced from the AfriNIC address blocks:         37605
    Unique aggregates announced from the AfriNIC address blocks:  12289
AfriNIC Region origin ASes present in the Internet Routing Table:  1743
    AfriNIC Prefixes per ASN:                                     21.57
AfriNIC Region origin ASes announcing only one prefix:              610
AfriNIC Region transit ASes present in the Internet Routing Table:  341
Average AfriNIC Region AS path length visible:                      4.9
    Max AfriNIC Region AS path length visible:                       30
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1088
Number of AfriNIC addresses announced to Internet:            107590144
    Equivalent to 6 /8s, 105 /16s and 178 /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        9481       8706      40  CHINAMOBILE-CN China Mobile Communicati
  7545        5727        786     691  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4859       4192      75  ERX-CERNET-BKB China Education and Rese
  7713        3546       1043      65  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3393       1872      93  VNPT-AS-VN VNPT Corp, VN
  7552        3057       1331      21  VIETEL-AS-AP Viettel Group, VN
  9498        2938        490     237  BBIL-AP BHARTI Airtel Ltd., IN
  4766        2551      11252     591  KIXS-AS-KR Korea Telecom, KR
 24560        2380        836     440  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd
 45090        2184       1438      79  TENCENT-NET-AP Shenzhen Tencent Compute

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        8228      10773    2938  AMAZON-02, US
 11492        4543        301     602  CABLEONE, US
  7155        3969        279      48  VIASAT-SP-BACKBONE, US
 22773        3594       3057     284  ASN-CXA-ALL-CCI-22773-RDC, US
  6327        3522       1320      64  SHAW, CA
 16625        3165       1584    2358  AKAMAI-AS, US
   749        3071      53111    2323  DNIC-AS-00749, US
396982        2631       3590     363  GOOGLE-CLOUD-PLATFORM, US
  7018        2572      24122    1566  ATT-INTERNET4, US
 30036        2510        362     438  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        7217       1706     140  UNI2-AS, ES
 39891        4833        286      59  ALJAWWALSTC-AS, SA
 20940        4076       3399     164  AKAMAI-ASN1, NL
  8551        3893        370      37  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2951       2292     909  ROSTELECOM-AS, RU
  9009        2659        250    1390  M247, RO
 34984        2276        359     612  TELLCOM-AS, TR
  6849        2018        307      18  UKRTELNET, UA
 58224        1851        950     543  TCI, IR
 13188        1606        100      26  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       11234       3361     589  Uninet S.A. de C.V., MX
 10620        3502        507     853  Telmex Colombia S.A., CO
 13999        2325        357     613  Mega Cable, S.A. de C.V., MX
 11830        2260        369      64  Instituto Costarricense de Electricidad
 28573        1334       2324     240  Claro NXT Telecomunicacoes Ltda, BR
  6503        1299        339     514  Axtel, S.A.B. de C.V., MX
  3816        1293        760     170  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6147        1132        370      22  Telefonica del Peru S.A.A., PE
 11664        1098        180     444  Techtel LMDS Comunicaciones Interactiva
 26615        1032       2498      45  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        1578        393      19  LINKdotNET-AS, EG
 24835        1553        533      30  RAYA-AS, EG
 36992        1338       1518     275  ETISALAT-MISR, EG
 36903        1242        550      99  MT-MPLS, MA
 29571        1025         67      51  ORANGE-COTE-IVOIRE, CI
 36935         875        520      42  Vodafone-, EG
  6713         549       1861      34  IAM-AS, MA
 15399         535         54      47  WANANCHI-, KE
 37342         493         32       1  MOVITEL, MZ
 24757         485         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       11234       3361     589  Uninet S.A. de C.V., MX
  9808        9481       8706      40  CHINAMOBILE-CN China Mobile Communicati
 16509        8228      10773    2938  AMAZON-02, US
 12479        7217       1706     140  UNI2-AS, ES
  7545        5727        786     691  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4859       4192      75  ERX-CERNET-BKB China Education and Rese
 39891        4833        286      59  ALJAWWALSTC-AS, SA
 11492        4543        301     602  CABLEONE, US
 20940        4076       3399     164  AKAMAI-ASN1, NL
  7155        3969        279      48  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        9481         9441  CHINAMOBILE-CN China Mobile Communications Grou
 12479        7217         7077  UNI2-AS, ES
 16509        8228         5290  AMAZON-02, US
  7545        5727         5036  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4859         4784  ERX-CERNET-BKB China Education and Research Net
 39891        4833         4774  ALJAWWALSTC-AS, SA
 11492        4543         3941  CABLEONE, US
  7155        3969         3921  VIASAT-SP-BACKBONE, US
 20940        4076         3912  AKAMAI-ASN1, NL
  8551        3893         3856  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo

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
    198802  UNALLOCATED  5.105.41.0/24           207279  MARKAHOST-TELEKOMUNIKASYON-L
    198802  UNALLOCATED  5.105.82.0/24           207279  MARKAHOST-TELEKOMUNIKASYON-L
    198802  UNALLOCATED  5.105.102.0/24          207279  MARKAHOST-TELEKOMUNIKASYON-L
      3507  UNALLOCATED  5.105.166.0/24          213035  AS-SERVERION Serverion B.V.,
    198802  UNALLOCATED  5.105.197.0/24          207279  MARKAHOST-TELEKOMUNIKASYON-L
     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
     62828  UNALLOCATED  8.21.130.0/24             3356  LEVEL3, 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
23.131.185.0/24      Origin:       174  COGENT-174, US
23.131.185.0/24     Transit:      2516  KDDI KDDI CORPORATION, JP
23.131.186.0/24      Origin:       174  COGENT-174, US
23.131.186.0/24     Transit:      2516  KDDI KDDI CORPORATION, JP
23.131.187.0/24      Origin:       174  COGENT-174, US
23.131.187.0/24     Transit:      2516  KDDI KDDI CORPORATION, JP
23.131.188.0/24      Origin:       174  COGENT-174, US
23.131.188.0/24     Transit:      2516  KDDI KDDI CORPORATION, JP
23.139.232.0/24      Origin:    211619  MAXKO, HR
23.139.232.0/24     Transit:     42864  GIGANET-HU GigaNet Internet Service Prov

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      /11:103     /12:298     
/13:578     /14:1196    /15:2050    /16:13461   /17:8245    /18:13834   
/19:25155   /20:44224   /21:51231   /22:109545  /23:97693   /24:550516  
/25:742     /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        6274        7217  UNI2-AS, ES
  8151        5176       11234  Uninet S.A. de C.V., MX
 39891        3632        4833  ALJAWWALSTC-AS, SA
 11492        3452        4543  CABLEONE, US
  8551        3365        3893  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  6327        3331        3522  SHAW, CA
  7155        3039        3969  VIASAT-SP-BACKBONE, US
 22773        2659        3594  ASN-CXA-ALL-CCI-22773-RDC, US
 30036        2167        2510  MEDIACOM-ENTERPRISE-BUSINESS, US
 10620        2056        3502  Telmex Colombia S.A., CO

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

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

   1:1806      2:1268      3:175       4:5         5:4498      6:128    
   7:6         8:1546      9:1        11:172      12:1548     13:385    
  14:2322     15:299      16:183      17:369      18:415      20:256    
  21:4        22:188      23:6255     24:2588     25:6        27:2449   
  29:19       31:2507     32:89       34:12       35:108      36:1923   
  37:4648     38:4458     39:820      40:151      41:3940     42:1220   
  43:2348     44:308      45:16552    46:4279     47:363      49:1754   
  50:1840     51:573      52:1589     54:391      55:859      56:8      
  57:113      58:1782     59:1153     60:989      61:2457     62:2655   
  63:1923     64:5684     65:2323     66:4969     67:3004     68:1377   
  69:4152     70:1249     71:674      72:2981     74:2629     75:1443   
  76:612      77:2439     78:1865     79:3175     80:2098     81:1737   
  82:1489     83:1284     84:1533     85:2995     86:762      87:1985   
  88:1240     89:3642     90:611      91:7719     92:2063     93:2630   
  94:3596     95:4011     96:1327     97:336      98:1154     99:745    
 100:73      101:1071    102:2680    103:31273   104:4653    105:484    
 106:943     107:2527    108:1031    109:4427    110:2084    111:3139   
 112:2034    113:1608    114:1652    115:2020    116:1925    117:2509   
 118:2358    119:2015    120:1799    121:1111    122:2631    123:2213   
 124:1614    125:2516    128:1301    129:1063    130:1015    131:1983   
 132:813     133:422     134:1898    135:304     136:877     137:949    
 138:2564    139:1577    140:1238    141:1454    142:1437    143:1504   
 144:1165    145:347     146:1943    147:1578    148:2350    149:2107   
 150:879     151:1158    152:1817    153:489     154:4471    155:1434   
 156:1773    157:1304    158:1056    159:2302    160:2552    161:1531   
 162:3519    163:1522    164:1624    165:1718    166:1037    167:1729   
 168:3893    169:944     170:4598    171:869     172:3558    173:2950   
 174:1072    175:1158    176:3699    177:4563    178:3586    179:2159   
 180:2572    181:3420    182:3372    183:1968    184:2359    185:20191  
 186:4711    187:3933    188:4115    189:3564    190:9155    191:1432   
 192:10934   193:8884    194:7316    195:5159    196:3066    197:2370   
 198:5949    199:6098    200:7986    201:5852    202:10666   203:10221  
 204:4597    205:3547    206:4169    207:3440    208:4078    209:4865   
 210:4435    211:2495    212:4126    213:3577    214:1083    215:59     
 216:6640    217:2703    218:1294    219:577     220:2019    221:971    
 222:885     223:2184   

End of report


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