[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri May 27 18:02:52 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 28 May, 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:                              899258
    Prefixes after maximum aggregation (per Origin AS):          339060
    Deaggregation factor:                                          2.65
    Unique aggregates announced (without unneeded subnets):      433427
Total ASes present in the Internet Routing Table:                 73221
    Prefixes per ASN:                                             12.28
Origin-only ASes present in the Internet Routing Table:           62839
Origin ASes announcing only one prefix:                           25797
Transit ASes present in the Internet Routing Table:               10382
Transit-only ASes present in the Internet Routing Table:            377
Average AS path length visible in the Internet Routing Table:       4.4
    Max AS path length visible:                                      66
    Max AS path prepend of ASN (267602)                              58
Prefixes from unregistered ASNs in the Routing Table:               922
    Number of instances of unregistered ASNs:                       930
Number of 32-bit ASNs allocated by the RIRs:                      39487
Number of 32-bit ASNs visible in the Routing Table:               32740
Prefixes from 32-bit ASNs in the Routing Table:                  154208
Number of bogon 32-bit ASNs visible in the Routing Table:           244
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            509
Number of addresses announced to Internet:                   3066265472
    Equivalent to 182 /8s, 195 /16s and 127 /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:      305546

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

Prefixes being announced by APNIC Region ASes:                   235296
    Total APNIC prefixes after maximum aggregation:               66895
    APNIC Deaggregation factor:                                    3.52
Prefixes being announced from the APNIC address blocks:          230516
    Unique aggregates announced from the APNIC address blocks:    95039
APNIC Region origin ASes present in the Internet Routing Table:   12684
    APNIC Prefixes per ASN:                                       18.17
APNIC Region origin ASes announcing only one prefix:               3644
APNIC Region transit ASes present in the Internet Routing Table:   1756
Average APNIC Region AS path length visible:                        4.7
    Max APNIC Region AS path length visible:                         31
Number of APNIC region 32-bit ASNs visible in the Routing Table:   7885
Number of APNIC addresses announced to Internet:              774119680
    Equivalent to 46 /8s, 36 /16s and 33 /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:                    262331
    Total ARIN prefixes after maximum aggregation:               120469
    ARIN Deaggregation factor:                                     2.18
Prefixes being announced from the ARIN address blocks:           262077
    Unique aggregates announced from the ARIN address blocks:    126232
ARIN Region origin ASes present in the Internet Routing Table:    19038
    ARIN Prefixes per ASN:                                        13.77
ARIN Region origin ASes announcing only one prefix:                6908
ARIN Region transit ASes present in the Internet Routing Table:    1939
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:    4509
Number of ARIN addresses announced to Internet:              1293438976
    Equivalent to 77 /8s, 24 /16s and 80 /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:                    258167
    Total RIPE prefixes after maximum aggregation:               117921
    RIPE Deaggregation factor:                                     2.19
Prefixes being announced from the RIPE address blocks:           255678
    Unique aggregates announced from the RIPE address blocks:    151267
RIPE Region origin ASes present in the Internet Routing Table:    28140
    RIPE Prefixes per ASN:                                         9.09
RIPE Region origin ASes announcing only one prefix:               12025
RIPE Region transit ASes present in the Internet Routing Table:    3972
Average RIPE Region AS path length visible:                         4.3
    Max RIPE Region AS path length visible:                          40
Number of RIPE region 32-bit ASNs visible in the Routing Table:   10706
Number of RIPE addresses announced to Internet:               714228352
    Equivalent to 42 /8s, 146 /16s and 66 /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:                  114749
    Total LACNIC prefixes after maximum aggregation:              27619
    LACNIC Deaggregation factor:                                   4.15
Prefixes being announced from the LACNIC address blocks:         114575
    Unique aggregates announced from the LACNIC address blocks:   48660
LACNIC Region origin ASes present in the Internet Routing Table:  10963
    LACNIC Prefixes per ASN:                                      10.45
LACNIC Region origin ASes announcing only one prefix:              2657
LACNIC Region transit ASes present in the Internet Routing Table:  2213
Average LACNIC Region AS path length visible:                       4.9
    Max LACNIC Region AS path length visible:                        66
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8675
Number of LACNIC addresses announced to Internet:             176530176
    Equivalent to 10 /8s, 133 /16s and 163 /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:                  27793
    Total AfriNIC prefixes after maximum aggregation:              5473
    AfriNIC Deaggregation factor:                                  5.08
Prefixes being announced from the AfriNIC address blocks:         35903
    Unique aggregates announced from the AfriNIC address blocks:  11809
AfriNIC Region origin ASes present in the Internet Routing Table:  1635
    AfriNIC Prefixes per ASN:                                     21.96
AfriNIC Region origin ASes announcing only one prefix:              563
AfriNIC Region transit ASes present in the Internet Routing Table:  328
Average AfriNIC Region AS path length visible:                      5.1
    Max AfriNIC Region AS path length visible:                       34
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:  965
Number of AfriNIC addresses announced to Internet:            107659776
    Equivalent to 6 /8s, 106 /16s and 194 /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        9204       8884      43  CHINAMOBILE-CN China Mobile Communicati
  7545        5928        789     695  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4709       4192      75  ERX-CERNET-BKB China Education and Rese
  7552        3555       1330      19  VIETEL-AS-AP Viettel Group, VN
  7713        3485       1039      53  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3423       1880      56  VNPT-AS-VN VNPT Corp, VN
  4766        2492      11121     601  KIXS-AS-KR Korea Telecom, KR
  9498        2410        499     236  BBIL-AP BHARTI Airtel Ltd., IN
 45090        2169       1438      79  TENCENT-NET-AP Shenzhen Tencent Compute
  4755        2123        425     214  TATACOMM-AS TATA Communications formerl

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        6470      10358    2808  AMAZON-02, US
 11492        4515        299     659  CABLEONE, US
 22773        3917       3072     364  ASN-CXA-ALL-CCI-22773-RDC, US
  7155        3901        264      31  VIASAT-SP-BACKBONE, US
 16625        3529       1817    2528  AKAMAI-AS, US
  6327        3442       1319      65  SHAW, CA
   749        2866      50792    2124  DNIC-AS-00749, US
 30036        2622        373     172  MEDIACOM-ENTERPRISE-BUSINESS, US
   209        2448       4961     420  CENTURYLINK-US-LEGACY-QWEST, US
 20115        2250       3050     492  CHARTER-20115, 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        6814       1730     150  UNI2-AS, ES
  9121        6735       1692      17  TTNET, TR
  8551        3998        374      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 20940        3969       3360     204  AKAMAI-ASN1, NL
 39891        3819        220      34  ALJAWWALSTC-AS, SA
 12389        2949       2273     908  ROSTELECOM-AS, RU
  6849        2927        355      21  UKRTELNET, UA
  9009        2471        246    1277  M247, GB
 34984        2238        357     628  TELLCOM-AS, TR
 47331        2089        328    1602  TTNET, TR

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       10655       3404     554  Uninet S.A. de C.V., MX
 10620        3480        518     736  Telmex Colombia S.A., CO
 11830        2437        369      63  Instituto Costarricense de Electricidad
 13999        1833        302     472  Mega Cable, S.A. de C.V., MX
  6503        1449        355     527  Axtel, S.A.B. de C.V., MX
 28573        1368       2333     255  CLARO S.A., BR
  3816        1257        671     148  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6147        1077        369      21  Telefonica del Peru S.A.A., PE
 11664        1027        192     442  Techtel LMDS Comunicaciones Interactiva
 11172         958        133      61  Alestra, S. de R.L. de C.V., MX

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        1655        393      21  LINKdotNET-AS, EG
 24835        1466        497      30  RAYA-AS, EG
 36992        1314       1519     263  ETISALAT-MISR, EG
 36903        1199        545     114  MT-MPLS, MA
 29571         956         65      64  ORANGE-COTE-IVOIRE, CI
 36935         675        520      42  Vodafone-, EG
  6713         611       1863      34  IAM-AS, MA
 15399         517         51      37  WANANCHI-, KE
 37342         464         32       1  MOVITEL, MZ
 23889         423        232      16  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       10655       3404     554  Uninet S.A. de C.V., MX
  9808        9204       8884      43  CHINAMOBILE-CN China Mobile Communicati
 12479        6814       1730     150  UNI2-AS, ES
  9121        6735       1692      17  TTNET, TR
 16509        6470      10358    2808  AMAZON-02, US
  7545        5928        789     695  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4709       4192      75  ERX-CERNET-BKB China Education and Rese
 11492        4515        299     659  CABLEONE, US
  8551        3998        374      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 20940        3969       3360     204  AKAMAI-ASN1, NL

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

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

   ASN  No of nets  Net Savings  Description
  9808        9204         9161  CHINAMOBILE-CN China Mobile Communications Grou
  9121        6735         6718  TTNET, TR
 12479        6814         6664  UNI2-AS, ES
  7545        5928         5233  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4709         4634  ERX-CERNET-BKB China Education and Research Net
  8551        3998         3959  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  7155        3901         3870  VIASAT-SP-BACKBONE, US
 11492        4515         3856  CABLEONE, US
 39891        3819         3785  ALJAWWALSTC-AS, SA
 20940        3969         3765  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
     65454  PRIVATE      1.9.206.0/24              4788  TMNET-AS-AP TM Net, Internet
    398083  UNALLOCATED  5.133.124.0/24          399587  UT, US
     33123  UNALLOCATED  8.10.69.0/24             11168  SCC, US
     62828  UNALLOCATED  8.21.130.0/24             3356  LEVEL3, US
    393266  UNALLOCATED  8.23.52.0/24             46887  LIGHTOWER, US
     18604  UNALLOCATED  8.25.204.0/24             3356  LEVEL3, US
    394936  UNALLOCATED  8.33.224.0/24            22442  HOU-PHONOSCOPE, US
     54338  UNALLOCATED  8.33.241.0/24             6461  ZAYO-6461, US
    395438  UNALLOCATED  8.42.206.0/24             3356  LEVEL3, US
    395056  UNALLOCATED  8.45.133.0/24             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
23.129.40.0/24       Origin:      6461  ZAYO-6461, US
23.129.40.0/24      Transit:      2516  KDDI KDDI CORPORATION, JP
23.129.56.0/24       Origin:      6461  ZAYO-6461, US
23.129.56.0/24      Transit:      2516  KDDI KDDI CORPORATION, JP
23.129.136.0/24      Origin:      6461  ZAYO-6461, US
23.129.136.0/24     Transit:      2516  KDDI KDDI CORPORATION, JP
23.141.0.0/24        Origin:    395350  UNASSIGNED
23.141.0.0/24       Transit:     11426  TWC-11426-CAROLINAS, US
23.166.208.0/24      Origin:    398906  LUFTCLOUD-ASN-01, US
23.166.208.0/24     Transit:    132132  REPUBLICTELECOM-SG MyRepublic Ltd., SG

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      /10:41      /11:100     /12:303     
/13:590     /14:1210    /15:2061    /16:13542   /17:8295    /18:13884   
/19:25158   /20:44042   /21:52201   /22:108486  /23:96209   /24:532297  
/25:810     /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
  9121        5891        6735  TTNET, TR
 12479        5787        6814  UNI2-AS, ES
  8151        4375       10655  Uninet S.A. de C.V., MX
  8551        3464        3998  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 11492        3418        4515  CABLEONE, US
  6327        3250        3442  SHAW, CA
 39891        3131        3819  ALJAWWALSTC-AS, SA
  7155        2991        3901  VIASAT-SP-BACKBONE, US
 22773        2919        3917  ASN-CXA-ALL-CCI-22773-RDC, US
  6849        2778        2927  UKRTELNET, UA

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

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

   1:1927      2:1019      3:154       4:6         5:3794      6:104    
   7:5         8:1567      9:1        11:173      12:1704     13:295    
  14:2381     15:202      16:42       17:384      18:162      20:212    
  21:4        22:188      23:5650     24:2329     25:6        27:2602   
  29:19       31:2435     32:95       34:4        35:82       36:1773   
  37:4455     38:2899     39:706      40:152      41:3970     42:1110   
  43:2184     44:292      45:16097    46:4144     47:324      49:1688   
  50:2172     51:108      52:1434     54:370      55:750      56:8      
  57:58       58:1758     59:1168     60:956      61:2260     62:2530   
  63:1942     64:5533     65:2333     66:4855     67:2978     68:1192   
  69:4177     70:1332     71:685      72:3053     74:2644     75:1393   
  76:586      77:2171     78:3921     79:3115     80:1994     81:1750   
  82:1497     83:1211     84:1365     85:3682     86:711      87:1971   
  88:2757     89:3297     90:535      91:7626     92:2017     93:2598   
  94:3501     95:4817     96:1311     97:349      98:998      99:737    
 100:77      101:1046    102:2066    103:29136   104:4418    105:457    
 106:876     107:2527    108:842     109:4262    110:2040    111:3308   
 112:2036    113:1538    114:1484    115:1977    116:1917    117:2507   
 118:2313    119:1838    120:1696    121:1075    122:2580    123:2101   
 124:1589    125:2128    128:1231    129:1090    130:979     131:2054   
 132:770     133:378     134:1906    135:291     136:882     137:862    
 138:2435    139:1506    140:862     141:1420    142:1292    143:1431   
 144:1209    145:347     146:1816    147:1492    148:2211    149:1730   
 150:852     151:1080    152:1849    153:459     154:3464    155:1425   
 156:1840    157:1236    158:1046    159:2205    160:2521    161:1283   
 162:3459    163:1273    164:1658    165:1605    166:728     167:1710   
 168:3777    169:833     170:4480    171:831     172:3181    173:3123   
 174:1024    175:1123    176:3590    177:4660    178:3551    179:2024   
 180:2290    181:2999    182:3256    183:1954    184:2371    185:19514  
 186:4265    187:3784    188:3885    189:3279    190:8894    191:1304   
 192:11006   193:8626    194:7020    195:4964    196:2969    197:2374   
 198:5997    199:6047    200:7574    201:5732    202:10500   203:10037  
 204:4544    205:3446    206:3757    207:3380    208:4016    209:4662   
 210:4305    211:2460    212:4042    213:3432    214:1155    215:67     
 216:6469    217:2672    218:1284    219:571     220:1949    221:980    
 222:842     223:2159   

End of report


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