[menog] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Dec 2 18:03:17 UTC 2022


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 03 Dec, 2022

  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:                              916495
    Prefixes after maximum aggregation (per Origin AS):          346331
    Deaggregation factor:                                          2.65
    Unique aggregates announced (without unneeded subnets):      443280
Total ASes present in the Internet Routing Table:                 73865
    Prefixes per ASN:                                             12.41
Origin-only ASes present in the Internet Routing Table:           63445
Origin ASes announcing only one prefix:                           26042
Transit ASes present in the Internet Routing Table:               10420
Transit-only ASes present in the Internet Routing Table:            416
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:              1005
    Number of instances of unregistered ASNs:                      1010
Number of 32-bit ASNs allocated by the RIRs:                      40761
Number of 32-bit ASNs visible in the Routing Table:               33760
Prefixes from 32-bit ASNs in the Routing Table:                  164587
Number of bogon 32-bit ASNs visible in the Routing Table:            16
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            526
Number of addresses announced to Internet:                   3063369856
    Equivalent to 182 /8s, 151 /16s and 80 /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:      311275

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

Prefixes being announced by APNIC Region ASes:                   239683
    Total APNIC prefixes after maximum aggregation:               68244
    APNIC Deaggregation factor:                                    3.51
Prefixes being announced from the APNIC address blocks:          234521
    Unique aggregates announced from the APNIC address blocks:    97382
APNIC Region origin ASes present in the Internet Routing Table:   13128
    APNIC Prefixes per ASN:                                       17.86
APNIC Region origin ASes announcing only one prefix:               3821
APNIC Region transit ASes present in the Internet Routing Table:   1756
Average APNIC Region AS path length visible:                        4.6
    Max APNIC Region AS path length visible:                         31
Number of APNIC region 32-bit ASNs visible in the Routing Table:   8383
Number of APNIC addresses announced to Internet:              773709312
    Equivalent to 46 /8s, 29 /16s and 222 /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:                    267297
    Total ARIN prefixes after maximum aggregation:               121921
    ARIN Deaggregation factor:                                     2.19
Prefixes being announced from the ARIN address blocks:           268818
    Unique aggregates announced from the ARIN address blocks:    129483
ARIN Region origin ASes present in the Internet Routing Table:    19070
    ARIN Prefixes per ASN:                                        14.10
ARIN Region origin ASes announcing only one prefix:                6975
ARIN Region transit ASes present in the Internet Routing Table:    1935
Average ARIN Region AS path length visible:                         3.8
    Max ARIN Region AS path length visible:                          35
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4684
Number of ARIN addresses announced to Internet:              1289197824
    Equivalent to 76 /8s, 215 /16s and 153 /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:                    262593
    Total RIPE prefixes after maximum aggregation:               121388
    RIPE Deaggregation factor:                                     2.16
Prefixes being announced from the RIPE address blocks:           259388
    Unique aggregates announced from the RIPE address blocks:    155057
RIPE Region origin ASes present in the Internet Routing Table:    28164
    RIPE Prefixes per ASN:                                         9.21
RIPE Region origin ASes announcing only one prefix:               11992
RIPE Region transit ASes present in the Internet Routing Table:    3957
Average RIPE Region AS path length visible:                         4.2
    Max RIPE Region AS path length visible:                          36
Number of RIPE region 32-bit ASNs visible in the Routing Table:   10898
Number of RIPE addresses announced to Internet:               716165760
    Equivalent to 42 /8s, 175 /16s and 210 /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:                  117313
    Total LACNIC prefixes after maximum aggregation:              28373
    LACNIC Deaggregation factor:                                   4.13
Prefixes being announced from the LACNIC address blocks:         116660
    Unique aggregates announced from the LACNIC address blocks:   48901
LACNIC Region origin ASes present in the Internet Routing Table:  11001
    LACNIC Prefixes per ASN:                                      10.60
LACNIC Region origin ASes announcing only one prefix:              2670
LACNIC Region transit ASes present in the Internet Routing Table:  2253
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:  8760
Number of LACNIC addresses announced to Internet:             175872000
    Equivalent to 10 /8s, 123 /16s and 152 /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:                  28604
    Total AfriNIC prefixes after maximum aggregation:              5648
    AfriNIC Deaggregation factor:                                  5.06
Prefixes being announced from the AfriNIC address blocks:         36582
    Unique aggregates announced from the AfriNIC address blocks:  12024
AfriNIC Region origin ASes present in the Internet Routing Table:  1698
    AfriNIC Prefixes per ASN:                                     21.54
AfriNIC Region origin ASes announcing only one prefix:              584
AfriNIC Region transit ASes present in the Internet Routing Table:  329
Average AfriNIC Region AS path length visible:                      5.0
    Max AfriNIC Region AS path length visible:                       37
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1035
Number of AfriNIC addresses announced to Internet:            108125440
    Equivalent to 6 /8s, 113 /16s and 221 /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        9139       8884      50  CHINAMOBILE-CN China Mobile Communicati
  7545        5955        786     695  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4882       4192      75  ERX-CERNET-BKB China Education and Rese
  7552        3616       1331      21  VIETEL-AS-AP Viettel Group, VN
  7713        3510       1043      63  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3366       1867      85  VNPT-AS-VN VNPT Corp, VN
  9498        2557        499     237  BBIL-AP BHARTI Airtel Ltd., IN
  4766        2533      11252     598  KIXS-AS-KR Korea Telecom, KR
 24560        2308        849     416  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd
 45090        2180       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        7674      10624    2899  AMAZON-02, US
 11492        4546        301     570  CABLEONE, US
  7155        3893        265      32  VIASAT-SP-BACKBONE, US
 22773        3702       3060     317  ASN-CXA-ALL-CCI-22773-RDC, US
  6327        3527       1320      63  SHAW, CA
 16625        3512       1834    2531  AKAMAI-AS, US
   749        3064      50660    2331  DNIC-AS-00749, US
 30036        2583        369     338  MEDIACOM-ENTERPRISE-BUSINESS, US
  7018        2578      24059    1552  ATT-INTERNET4, US
396982        2565       3482     360  GOOGLE-CLOUD-PLATFORM, 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        6961       1730     151  UNI2-AS, ES
  9121        6365       1692      17  TTNET, TR
 20940        4081       3400     182  AKAMAI-ASN1, NL
 39891        4010        234      47  ALJAWWALSTC-AS, SA
  8551        3977        374      38  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2952       2291     913  ROSTELECOM-AS, RU
  9009        2645        252    1362  M247, RO
 47331        2589        386    1951  TTNET, TR
 34984        2250        357     609  TELLCOM-AS, TR
  6849        2194        339      20  UKRTELNET, 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       10799       3336     597  Uninet S.A. de C.V., MX
 10620        3461        506     848  Telmex Colombia S.A., CO
 11830        2261        369      64  Instituto Costarricense de Electricidad
 13999        2131        350     554  Mega Cable, S.A. de C.V., MX
 28573        1333       2327     261  Claro NXT Telecomunicacoes Ltda, BR
  6503        1293        338     521  Axtel, S.A.B. de C.V., MX
  3816        1288        728     155  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6147        1154        369      22  Telefonica del Peru S.A.A., PE
 11664        1133        184     474  Techtel LMDS Comunicaciones Interactiva
 26615         989       2466      43  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        1548        537      31  RAYA-AS, EG
 24863        1537        393      21  LINKdotNET-AS, EG
 36992        1356       1520     269  ETISALAT-MISR, EG
 36903        1242        550      99  MT-MPLS, MA
 29571        1011         67      40  ORANGE-COTE-IVOIRE, CI
 36935         882        520      42  Vodafone-, EG
  6713         612       1863      34  IAM-AS, MA
 15399         527         53      45  WANANCHI-, KE
 37342         441         32       1  MOVITEL, MZ
 23889         400        231      14  MauritiusTelecom, MU

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       10799       3336     597  Uninet S.A. de C.V., MX
  9808        9139       8884      50  CHINAMOBILE-CN China Mobile Communicati
 16509        7674      10624    2899  AMAZON-02, US
 12479        6961       1730     151  UNI2-AS, ES
  9121        6365       1692      17  TTNET, TR
  7545        5955        786     695  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4882       4192      75  ERX-CERNET-BKB China Education and Rese
 11492        4546        301     570  CABLEONE, US
 20940        4081       3400     182  AKAMAI-ASN1, NL
 39891        4010        234      47  ALJAWWALSTC-AS, SA

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

Global Per AS Maximum Aggregation summary
-----------------------------------------

   ASN  No of nets  Net Savings  Description
  9808        9139         9089  CHINAMOBILE-CN China Mobile Communications Grou
 12479        6961         6810  UNI2-AS, ES
  9121        6365         6348  TTNET, TR
  7545        5955         5260  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4882         4807  ERX-CERNET-BKB China Education and Research Net
 16509        7674         4775  AMAZON-02, US
 11492        4546         3976  CABLEONE, US
 39891        4010         3963  ALJAWWALSTC-AS, SA
  8551        3977         3939  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 20940        4081         3899  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
     65000  PRIVATE      2.92.64.0/20              8371  VIMPELCOM-NN Vimpelcom, Nizh
     65000  PRIVATE      2.92.80.0/20              8371  VIMPELCOM-NN Vimpelcom, Nizh
    398083  UNALLOCATED  5.133.124.0/24          399587  UT, US
     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
     25674  UNALLOCATED  8.12.76.0/24              3356  LEVEL3, US
     16641  UNALLOCATED  8.12.250.0/24             3356  LEVEL3, US
     25674  UNALLOCATED  8.14.115.0/24             3356  LEVEL3, US
     12169  UNALLOCATED  8.15.207.0/24            32787  PROLEXIC-TECHNOLOGIES-DDOS-M

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
23.131.184.0/24      Origin:       174  COGENT-174, US
23.131.184.0/24     Transit:      2516  KDDI KDDI CORPORATION, JP
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:     46450  PILOT, US
23.131.188.0/24     Transit:      1299  TWELVE99 Arelion, fka Telia Carrier, SE

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      /11:100     /12:295     
/13:587     /14:1201    /15:2048    /16:13516   /17:8303    /18:13900   
/19:25190   /20:44356   /21:52395   /22:110218  /23:97945   /24:545572  
/25:801     /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        5994        6961  UNI2-AS, ES
  9121        5528        6365  TTNET, TR
  8151        4784       10799  Uninet S.A. de C.V., MX
 11492        3453        4546  CABLEONE, US
  8551        3441        3977  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  6327        3335        3527  SHAW, CA
 39891        3193        4010  ALJAWWALSTC-AS, SA
  7155        2982        3893  VIASAT-SP-BACKBONE, US
 22773        2731        3702  ASN-CXA-ALL-CCI-22773-RDC, US
 30036        2241        2583  MEDIACOM-ENTERPRISE-BUSINESS, US

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

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

   1:1845      2:1024      3:167       4:5         5:4065      6:118    
   7:5         8:1583      9:1        11:173      12:1614     13:380    
  14:2375     15:286      16:73       17:368      18:386      20:240    
  21:4        22:188      23:6012     24:2455     25:4        27:2707   
  29:19       31:2480     32:104      34:8        35:94       36:1808   
  37:4573     38:3879     39:771      40:145      41:3971     42:1154   
  43:2314     44:304      45:16374    46:4170     47:378      49:1723   
  50:1930     51:244      52:1506     54:397      55:838      56:8      
  57:78       58:1794     59:1159     60:1005     61:2426     62:2581   
  63:1950     64:5636     65:2337     66:4845     67:2983     68:1376   
  69:4143     70:1289     71:689      72:2988     74:2647     75:1470   
  76:599      77:2259     78:3958     79:3159     80:2041     81:1824   
  82:1499     83:1228     84:1503     85:3755     86:755      87:1932   
  88:2837     89:3494     90:578      91:7612     92:1994     93:2571   
  94:3537     95:4825     96:1315     97:345      98:1168     99:740    
 100:69      101:1052    102:2461    103:30496   104:4567    105:483    
 106:827     107:2547    108:915     109:4324    110:2024    111:3305   
 112:2042    113:1569    114:1605    115:2042    116:1912    117:2467   
 118:2333    119:1917    120:1723    121:1108    122:2593    123:2136   
 124:1578    125:2211    128:1259    129:949     130:971     131:2025   
 132:846     133:400     134:1904    135:295     136:878     137:856    
 138:2554    139:1522    140:1039    141:1487    142:1417    143:1422   
 144:1199    145:354     146:1897    147:1514    148:2283    149:1849   
 150:864     151:1146    152:1837    153:455     154:3802    155:1411   
 156:1634    157:1288    158:1041    159:2241    160:2578    161:1427   
 162:3530    163:1452    164:1677    165:1627    166:822     167:1731   
 168:3852    169:914     170:4569    171:869     172:3516    173:3106   
 174:1034    175:1144    176:3627    177:4782    178:3552    179:2148   
 180:2364    181:3358    182:3257    183:1936    184:2365    185:19962  
 186:4627    187:3925    188:4048    189:3435    190:9057    191:1466   
 192:11003   193:8801    194:7217    195:5078    196:2974    197:2445   
 198:6018    199:6099    200:7711    201:5833    202:10616   203:10070  
 204:4608    205:3500    206:3836    207:3405    208:4118    209:4818   
 210:4422    211:2489    212:4053    213:3457    214:1104    215:57     
 216:6581    217:2626    218:1287    219:575     220:2050    221:954    
 222:840     223:2031   

End of report


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