[menog] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Feb 24 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 25 Feb, 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:                              915074
    Prefixes after maximum aggregation (per Origin AS):          347188
    Deaggregation factor:                                          2.64
    Unique aggregates announced (without unneeded subnets):      446394
Total ASes present in the Internet Routing Table:                 74185
    Prefixes per ASN:                                             12.34
Origin-only ASes present in the Internet Routing Table:           63643
Origin ASes announcing only one prefix:                           26113
Transit ASes present in the Internet Routing Table:               10542
Transit-only ASes present in the Internet Routing Table:            441
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:              1048
    Number of instances of unregistered ASNs:                      1054
Number of 32-bit ASNs allocated by the RIRs:                      41269
Number of 32-bit ASNs visible in the Routing Table:               34240
Prefixes from 32-bit ASNs in the Routing Table:                  167726
Number of bogon 32-bit ASNs visible in the Routing Table:            21
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            574
Number of addresses announced to Internet:                   3064132864
    Equivalent to 182 /8s, 162 /16s and 245 /24s
    Percentage of available address space announced:               82.8
    Percentage of allocated address space announced:               82.8
    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:      306165

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

Prefixes being announced by APNIC Region ASes:                   242212
    Total APNIC prefixes after maximum aggregation:               69129
    APNIC Deaggregation factor:                                    3.50
Prefixes being announced from the APNIC address blocks:          236732
    Unique aggregates announced from the APNIC address blocks:    97969
APNIC Region origin ASes present in the Internet Routing Table:   13333
    APNIC Prefixes per ASN:                                       17.76
APNIC Region origin ASes announcing only one prefix:               3871
APNIC Region transit ASes present in the Internet Routing Table:   1784
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         26
Number of APNIC region 32-bit ASNs visible in the Routing Table:   8605
Number of APNIC addresses announced to Internet:              773801600
    Equivalent to 46 /8s, 31 /16s and 70 /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:                    267859
    Total ARIN prefixes after maximum aggregation:               121809
    ARIN Deaggregation factor:                                     2.20
Prefixes being announced from the ARIN address blocks:           270028
    Unique aggregates announced from the ARIN address blocks:    130386
ARIN Region origin ASes present in the Internet Routing Table:    19066
    ARIN Prefixes per ASN:                                        14.16
ARIN Region origin ASes announcing only one prefix:                6957
ARIN Region transit ASes present in the Internet Routing Table:    1958
Average ARIN Region AS path length visible:                         3.7
    Max ARIN Region AS path length visible:                          35
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4745
Number of ARIN addresses announced to Internet:              1286921472
    Equivalent to 76 /8s, 180 /16s and 221 /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:                    257350
    Total RIPE prefixes after maximum aggregation:               121191
    RIPE Deaggregation factor:                                     2.12
Prefixes being announced from the RIPE address blocks:           253790
    Unique aggregates announced from the RIPE address blocks:    156641
RIPE Region origin ASes present in the Internet Routing Table:    28248
    RIPE Prefixes per ASN:                                         8.98
RIPE Region origin ASes announcing only one prefix:               12026
RIPE Region transit ASes present in the Internet Routing Table:    3970
Average RIPE Region AS path length visible:                         4.2
    Max RIPE Region AS path length visible:                          38
Number of RIPE region 32-bit ASNs visible in the Routing Table:   11041
Number of RIPE addresses announced to Internet:               718421888
    Equivalent to 42 /8s, 210 /16s and 63 /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:                  117438
    Total LACNIC prefixes after maximum aggregation:              28511
    LACNIC Deaggregation factor:                                   4.12
Prefixes being announced from the LACNIC address blocks:         116688
    Unique aggregates announced from the LACNIC address blocks:   48794
LACNIC Region origin ASes present in the Internet Routing Table:  10973
    LACNIC Prefixes per ASN:                                      10.63
LACNIC Region origin ASes announcing only one prefix:              2659
LACNIC Region transit ASes present in the Internet Routing Table:  2282
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:  8780
Number of LACNIC addresses announced to Internet:             176546816
    Equivalent to 10 /8s, 133 /16s and 228 /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:                  29167
    Total AfriNIC prefixes after maximum aggregation:              5780
    AfriNIC Deaggregation factor:                                  5.05
Prefixes being announced from the AfriNIC address blocks:         37262
    Unique aggregates announced from the AfriNIC address blocks:  12155
AfriNIC Region origin ASes present in the Internet Routing Table:  1723
    AfriNIC Prefixes per ASN:                                     21.63
AfriNIC Region origin ASes announcing only one prefix:              600
AfriNIC Region transit ASes present in the Internet Routing Table:  337
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: 1069
Number of AfriNIC addresses announced to Internet:            108095488
    Equivalent to 6 /8s, 113 /16s and 104 /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        9467       8884      52  CHINAMOBILE-CN China Mobile Communicati
  7545        5810        787     694  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4861       4192      75  ERX-CERNET-BKB China Education and Rese
  7552        3665       1331      21  VIETEL-AS-AP Viettel Group, VN
  7713        3531       1043      65  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3377       1874      95  VNPT-AS-VN VNPT Corp, VN
  9498        2786        499     238  BBIL-AP BHARTI Airtel Ltd., IN
  4766        2544      11251     591  KIXS-AS-KR Korea Telecom, KR
 24560        2357        836     443  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        8023      10737    2873  AMAZON-02, US
 11492        4514        299     642  CABLEONE, US
  7155        3955        270      43  VIASAT-SP-BACKBONE, US
 22773        3649       3063     285  ASN-CXA-ALL-CCI-22773-RDC, US
  6327        3504       1320      64  SHAW, CA
 16625        3307       1660    2430  AKAMAI-AS, US
   749        3034      50571    2301  DNIC-AS-00749, US
396982        2618       3586     354  GOOGLE-CLOUD-PLATFORM, US
  7018        2582      24139    1575  ATT-INTERNET4, US
 30036        2534        363     422  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        7076       1706     146  UNI2-AS, ES
 39891        4561        269      58  ALJAWWALSTC-AS, SA
 20940        4048       3399     175  AKAMAI-ASN1, NL
  8551        3901        370      37  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2950       2292     911  ROSTELECOM-AS, RU
  9009        2666        253    1387  M247, RO
 34984        2264        359     608  TELLCOM-AS, TR
  6849        2164        339      19  UKRTELNET, UA
 58224        1847        949     546  TCI, IR
 13188        1607        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       11167       3346     585  Uninet S.A. de C.V., MX
 10620        3467        504     872  Telmex Colombia S.A., CO
 11830        2263        369      65  Instituto Costarricense de Electricidad
 13999        2255        370     603  Mega Cable, S.A. de C.V., MX
 28573        1342       2324     256  Claro NXT Telecomunicacoes Ltda, BR
  6503        1297        339     517  Axtel, S.A.B. de C.V., MX
  3816        1292        746     156  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6147        1134        370      22  Telefonica del Peru S.A.A., PE
 11664        1103        180     456  Techtel LMDS Comunicaciones Interactiva
 26615        1025       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
 24835        1542        533      30  RAYA-AS, EG
 24863        1489        393      19  LINKdotNET-AS, EG
 36992        1346       1517     278  ETISALAT-MISR, EG
 36903        1242        550      99  MT-MPLS, MA
 29571        1001         67      53  ORANGE-COTE-IVOIRE, CI
 36935         886        520      42  Vodafone-, EG
  6713         551       1861      34  IAM-AS, MA
 15399         526         54      46  WANANCHI-, KE
 24757         498         73       5  EthioNet-AS, ET
 37342         493         32       1  MOVITEL, MZ

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       11167       3346     585  Uninet S.A. de C.V., MX
  9808        9467       8884      52  CHINAMOBILE-CN China Mobile Communicati
 16509        8023      10737    2873  AMAZON-02, US
 12479        7076       1706     146  UNI2-AS, ES
  7545        5810        787     694  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4861       4192      75  ERX-CERNET-BKB China Education and Rese
 39891        4561        269      58  ALJAWWALSTC-AS, SA
 11492        4514        299     642  CABLEONE, US
 20940        4048       3399     175  AKAMAI-ASN1, NL
  7155        3955        270      43  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        9467         9415  CHINAMOBILE-CN China Mobile Communications Grou
 12479        7076         6930  UNI2-AS, ES
 16509        8023         5150  AMAZON-02, US
  7545        5810         5116  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4861         4786  ERX-CERNET-BKB China Education and Research Net
 39891        4561         4503  ALJAWWALSTC-AS, SA
  7155        3955         3912  VIASAT-SP-BACKBONE, US
 20940        4048         3873  AKAMAI-ASN1, NL
 11492        4514         3872  CABLEONE, US
  8551        3901         3864  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
      3507  UNALLOCATED  5.105.166.0/24          213035  AS-SERVERION Serverion B.V.,
     33123  UNALLOCATED  8.10.69.0/24             11168  SCC, US
     16641  UNALLOCATED  8.10.194.0/24             3356  LEVEL3, US
     16641  UNALLOCATED  8.10.210.0/24             3356  LEVEL3, US
     16641  UNALLOCATED  8.12.250.0/24             3356  LEVEL3, 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
      1618  UNALLOCATED  8.21.143.0/24           136796  CL-JP-AS CORELINK JAPAN, JP
    393266  UNALLOCATED  8.23.52.0/24             46887  LIGHTOWER, 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
23.136.112.0/24      Origin:     54835  UNASSIGNED
23.136.112.0/24     Transit:     21559  OSNET, PR

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       /9:13      /10:39      /11:103     /12:299     
/13:580     /14:1201    /15:2040    /16:13485   /17:8298    /18:13872   
/19:25241   /20:44374   /21:51795   /22:109976  /23:97498   /24:545423  
/25:821     /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        6133        7076  UNI2-AS, ES
  8151        5177       11167  Uninet S.A. de C.V., MX
 39891        3552        4561  ALJAWWALSTC-AS, SA
 11492        3430        4514  CABLEONE, US
  8551        3373        3901  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  6327        3312        3504  SHAW, CA
  7155        3032        3955  VIASAT-SP-BACKBONE, US
 22773        2699        3649  ASN-CXA-ALL-CCI-22773-RDC, US
 30036        2191        2534  MEDIACOM-ENTERPRISE-BUSINESS, US
 10620        2022        3467  Telmex Colombia S.A., CO

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

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

   1:1674      2:1241      3:169       4:5         5:4335      6:114    
   7:6         8:1549      9:1        11:172      12:1583     13:392    
  14:2353     15:291      16:111      17:367      18:396      20:249    
  21:4        22:188      23:6088     24:2503     25:4        27:2522   
  29:19       31:2512     32:107      34:8        35:106      36:1910   
  37:4602     38:4224     39:863      40:152      41:4030     42:1071   
  43:2337     44:302      45:16409    46:4185     47:383      49:1743   
  50:1833     51:386      52:1584     54:397      55:870      56:8      
  57:87       58:1743     59:1174     60:983      61:2439     62:2630   
  63:1942     64:5646     65:2324     66:4931     67:3035     68:1351   
  69:4147     70:1274     71:662      72:2972     74:2599     75:1458   
  76:603      77:2409     78:1857     79:3173     80:2064     81:1735   
  82:1502     83:1240     84:1532     85:2999     86:758      87:1969   
  88:1241     89:3622     90:611      91:7680     92:2022     93:2589   
  94:3510     95:3957     96:1335     97:358      98:1164     99:744    
 100:75      101:1069    102:2598    103:31036   104:4516    105:485    
 106:857     107:2546    108:919     109:4398    110:2094    111:3329   
 112:2044    113:1557    114:1625    115:2038    116:1913    117:2555   
 118:2281    119:1951    120:1774    121:1114    122:2604    123:2185   
 124:1586    125:2418    128:1317    129:1073    130:997     131:1986   
 132:787     133:413     134:1909    135:294     136:861     137:939    
 138:2555    139:1548    140:1193    141:1471    142:1426    143:1483   
 144:1211    145:350     146:1902    147:1560    148:2304    149:1916   
 150:873     151:1147    152:1848    153:487     154:4201    155:1421   
 156:1679    157:1298    158:1019    159:2265    160:2551    161:1445   
 162:3544    163:1496    164:1596    165:1675    166:856     167:1719   
 168:3833    169:926     170:4549    171:899     172:3508    173:2981   
 174:1038    175:1162    176:3730    177:4582    178:3622    179:2211   
 180:2384    181:3410    182:3427    183:1933    184:2359    185:20092  
 186:4655    187:3951    188:4153    189:3580    190:9129    191:1445   
 192:10957   193:8830    194:7241    195:5122    196:3063    197:2399   
 198:5961    199:6108    200:7730    201:5878    202:10687   203:10030  
 204:4611    205:3530    206:3861    207:3446    208:4085    209:4865   
 210:4466    211:2500    212:4093    213:3561    214:1088    215:55     
 216:6579    217:2647    218:1287    219:573     220:2019    221:972    
 222:872     223:2137   

End of report


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