[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Jun 10 18:02:55 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 11 Jun, 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:                              900506
    Prefixes after maximum aggregation (per Origin AS):          339370
    Deaggregation factor:                                          2.65
    Unique aggregates announced (without unneeded subnets):      434242
Total ASes present in the Internet Routing Table:                 73256
    Prefixes per ASN:                                             12.29
Origin-only ASes present in the Internet Routing Table:           62869
Origin ASes announcing only one prefix:                           25827
Transit ASes present in the Internet Routing Table:               10387
Transit-only ASes present in the Internet Routing Table:            376
Average AS path length visible in the Internet Routing Table:       4.4
    Max AS path length visible:                                      61
    Max AS path prepend of ASN ( 37447)                              57
Prefixes from unregistered ASNs in the Routing Table:               918
    Number of instances of unregistered ASNs:                       925
Number of 32-bit ASNs allocated by the RIRs:                      39573
Number of 32-bit ASNs visible in the Routing Table:               32813
Prefixes from 32-bit ASNs in the Routing Table:                  154828
Number of bogon 32-bit ASNs visible in the Routing Table:           242
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            495
Number of addresses announced to Internet:                   3065155456
    Equivalent to 182 /8s, 178 /16s and 143 /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:      305833

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

Prefixes being announced by APNIC Region ASes:                   235356
    Total APNIC prefixes after maximum aggregation:               66865
    APNIC Deaggregation factor:                                    3.52
Prefixes being announced from the APNIC address blocks:          230680
    Unique aggregates announced from the APNIC address blocks:    95361
APNIC Region origin ASes present in the Internet Routing Table:   12701
    APNIC Prefixes per ASN:                                       18.16
APNIC Region origin ASes announcing only one prefix:               3643
APNIC Region transit ASes present in the Internet Routing Table:   1751
Average APNIC Region AS path length visible:                        4.7
    Max APNIC Region AS path length visible:                         32
Number of APNIC region 32-bit ASNs visible in the Routing Table:   7915
Number of APNIC addresses announced to Internet:              773710848
    Equivalent to 46 /8s, 29 /16s and 228 /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:                    263341
    Total ARIN prefixes after maximum aggregation:               120608
    ARIN Deaggregation factor:                                     2.18
Prefixes being announced from the ARIN address blocks:           263102
    Unique aggregates announced from the ARIN address blocks:    126827
ARIN Region origin ASes present in the Internet Routing Table:    19035
    ARIN Prefixes per ASN:                                        13.82
ARIN Region origin ASes announcing only one prefix:                6894
ARIN Region transit ASes present in the Internet Routing Table:    1932
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:    4526
Number of ARIN addresses announced to Internet:              1293383680
    Equivalent to 77 /8s, 23 /16s and 120 /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:                    258021
    Total RIPE prefixes after maximum aggregation:               118041
    RIPE Deaggregation factor:                                     2.19
Prefixes being announced from the RIPE address blocks:           255597
    Unique aggregates announced from the RIPE address blocks:    151284
RIPE Region origin ASes present in the Internet Routing Table:    28127
    RIPE Prefixes per ASN:                                         9.09
RIPE Region origin ASes announcing only one prefix:               12033
RIPE Region transit ASes present in the Internet Routing Table:    3974
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:   10703
Number of RIPE addresses announced to Internet:               713612416
    Equivalent to 42 /8s, 136 /16s and 220 /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:                  115036
    Total LACNIC prefixes after maximum aggregation:              27674
    LACNIC Deaggregation factor:                                   4.16
Prefixes being announced from the LACNIC address blocks:         114810
    Unique aggregates announced from the LACNIC address blocks:   48715
LACNIC Region origin ASes present in the Internet Routing Table:  10981
    LACNIC Prefixes per ASN:                                      10.46
LACNIC Region origin ASes announcing only one prefix:              2687
LACNIC Region transit ASes present in the Internet Routing Table:  2230
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:  8693
Number of LACNIC addresses announced to Internet:             176417536
    Equivalent to 10 /8s, 131 /16s and 235 /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:                  27834
    Total AfriNIC prefixes after maximum aggregation:              5473
    AfriNIC Deaggregation factor:                                  5.09
Prefixes being announced from the AfriNIC address blocks:         35822
    Unique aggregates announced from the AfriNIC address blocks:  11639
AfriNIC Region origin ASes present in the Internet Routing Table:  1651
    AfriNIC Prefixes per ASN:                                     21.70
AfriNIC Region origin ASes announcing only one prefix:              570
AfriNIC Region transit ASes present in the Internet Routing Table:  332
Average AfriNIC Region AS path length visible:                      5.1
    Max AfriNIC Region AS path length visible:                       61
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:  976
Number of AfriNIC addresses announced to Internet:            107740416
    Equivalent to 6 /8s, 107 /16s and 253 /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        9224       8880      38  CHINAMOBILE-CN China Mobile Communicati
  7545        5921        789     694  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4711       4192      75  ERX-CERNET-BKB China Education and Rese
  7552        3578       1330      19  VIETEL-AS-AP Viettel Group, VN
  7713        3483       1039      53  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3430       1880      56  VNPT-AS-VN VNPT Corp, VN
  4766        2493      11121     601  KIXS-AS-KR Korea Telecom, KR
  9498        2412        499     236  BBIL-AP BHARTI Airtel Ltd., IN
 45090        2170       1438      79  TENCENT-NET-AP Shenzhen Tencent Compute
  4755        2127        425     216  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        6631      10371    2689  AMAZON-02, US
 11492        4528        300     650  CABLEONE, US
 22773        3910       3071     365  ASN-CXA-ALL-CCI-22773-RDC, US
  7155        3901        264      31  VIASAT-SP-BACKBONE, US
 16625        3455       1801    2512  AKAMAI-AS, US
  6327        3442       1319      65  SHAW, CA
   749        2963      50742    2219  DNIC-AS-00749, US
 30036        2622        375     192  MEDIACOM-ENTERPRISE-BUSINESS, US
   209        2437       4961     419  CENTURYLINK-US-LEGACY-QWEST, US
 20115        2251       3053     490  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        6835       1730     143  UNI2-AS, ES
  9121        6745       1692      17  TTNET, TR
  8551        4000        374      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 20940        3976       3360     204  AKAMAI-ASN1, NL
 39891        3873        226      43  ALJAWWALSTC-AS, SA
 12389        2961       2273     907  ROSTELECOM-AS, RU
  6849        2874        355      21  UKRTELNET, UA
  9009        2482        247    1282  M247, GB
 34984        2245        357     633  TELLCOM-AS, TR
 47331        2087        327    1601  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       10706       3401     551  Uninet S.A. de C.V., MX
 10620        3486        519     740  Telmex Colombia S.A., CO
 11830        2436        369      63  Instituto Costarricense de Electricidad
 13999        1856        307     483  Mega Cable, S.A. de C.V., MX
  6503        1444        355     526  Axtel, S.A.B. de C.V., MX
 28573        1375       2332     273  CLARO S.A., BR
  3816        1258        671     149  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6147        1079        369      21  Telefonica del Peru S.A.A., PE
 11664        1031        192     439  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        1603        393      19  LINKdotNET-AS, EG
 24835        1506        521      31  RAYA-AS, EG
 36992        1316       1519     264  ETISALAT-MISR, EG
 36903        1199        545     114  MT-MPLS, MA
 29571         961         65      58  ORANGE-COTE-IVOIRE, CI
 36935         776        520      42  Vodafone-, EG
  6713         610       1863      34  IAM-AS, MA
 15399         518         51      37  WANANCHI-, KE
 37342         458         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       10706       3401     551  Uninet S.A. de C.V., MX
  9808        9224       8880      38  CHINAMOBILE-CN China Mobile Communicati
 12479        6835       1730     143  UNI2-AS, ES
  9121        6745       1692      17  TTNET, TR
 16509        6631      10371    2689  AMAZON-02, US
  7545        5921        789     694  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4711       4192      75  ERX-CERNET-BKB China Education and Rese
 11492        4528        300     650  CABLEONE, US
  8551        4000        374      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 20940        3976       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        9224         9186  CHINAMOBILE-CN China Mobile Communications Grou
  9121        6745         6728  TTNET, TR
 12479        6835         6692  UNI2-AS, ES
  7545        5921         5227  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4711         4636  ERX-CERNET-BKB China Education and Research Net
  8551        4000         3961  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 16509        6631         3942  AMAZON-02, US
 11492        4528         3878  CABLEONE, US
  7155        3901         3870  VIASAT-SP-BACKBONE, US
 39891        3873         3830  ALJAWWALSTC-AS, SA

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
    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
     18798  UNALLOCATED  8.40.106.0/24             6461  ZAYO-6461, US
    394856  UNALLOCATED  8.40.216.0/24             3356  LEVEL3, US
    395438  UNALLOCATED  8.42.206.0/24             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
23.141.0.0/24        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
27.100.7.0/24        Origin:     56096  UNASSIGNED
27.100.7.0/24       Transit:     45455  TH-2S1N-AP Two S One N Co Ltd, Internet 
41.57.124.0/22       Origin:     37442  UNASSIGNED
41.57.124.0/22      Transit:     37204  TELONE, ZW
41.57.124.0/23       Origin:     37442  UNASSIGNED
41.57.124.0/23      Transit:     37204  TELONE, ZW

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

Number of prefixes announced per prefix length (Global)
-------------------------------------------------------

 /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
 /7:0        /8:16       /9:13      /10:41      /11:99      /12:300     
/13:591     /14:1208    /15:2054    /16:13515   /17:8292    /18:13852   
/19:25125   /20:44192   /21:52306   /22:108637  /23:96452   /24:533008  
/25:805     /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        5899        6745  TTNET, TR
 12479        5812        6835  UNI2-AS, ES
  8151        4425       10706  Uninet S.A. de C.V., MX
  8551        3466        4000  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 11492        3431        4528  CABLEONE, US
  6327        3250        3442  SHAW, CA
 39891        3185        3873  ALJAWWALSTC-AS, SA
  7155        2991        3901  VIASAT-SP-BACKBONE, US
 22773        2911        3910  ASN-CXA-ALL-CCI-22773-RDC, US
  6849        2730        2874  UKRTELNET, UA

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

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

   1:1936      2:1024      3:157       4:6         5:3798      6:108    
   7:5         8:1574      9:1        11:173      12:1681     13:332    
  14:2369     15:209      16:42       17:386      18:171      20:213    
  21:4        22:188      23:5682     24:2365     25:6        27:2613   
  29:19       31:2441     32:95       34:3        35:87       36:1773   
  37:4460     38:3043     39:710      40:152      41:3901     42:1122   
  43:2215     44:290      45:15858    46:4148     47:326      49:1690   
  50:2170     51:108      52:1444     54:381      55:758      56:8      
  57:58       58:1767     59:1156     60:961      61:2266     62:2489   
  63:1941     64:5550     65:2342     66:4846     67:2977     68:1194   
  69:4186     70:1330     71:683      72:3051     74:2664     75:1392   
  76:584      77:2188     78:3919     79:3124     80:1992     81:1754   
  82:1495     83:1211     84:1330     85:3675     86:713      87:1946   
  88:2767     89:3338     90:534      91:7596     92:2009     93:2553   
  94:3464     95:4782     96:1311     97:351      98:999      99:754    
 100:77      101:1045    102:2105    103:29220   104:4466    105:467    
 106:874     107:2535    108:847     109:4264    110:1999    111:3304   
 112:2039    113:1539    114:1482    115:1977    116:1914    117:2514   
 118:2324    119:1849    120:1699    121:1075    122:2542    123:2096   
 124:1599    125:2124    128:1242    129:1084    130:982     131:2033   
 132:775     133:378     134:1926    135:280     136:875     137:855    
 138:2435    139:1517    140:889     141:1422    142:1294    143:1453   
 144:1206    145:349     146:1833    147:1509    148:2212    149:1743   
 150:855     151:1077    152:1851    153:460     154:3567    155:1438   
 156:1811    157:1237    158:1044    159:2206    160:2533    161:1279   
 162:3467    163:1277    164:1626    165:1613    166:726     167:1716   
 168:3783    169:853     170:4482    171:831     172:3210    173:3133   
 174:1018    175:1133    176:3593    177:4610    178:3548    179:2069   
 180:2288    181:2996    182:3249    183:1954    184:2366    185:19538  
 186:4290    187:3818    188:3927    189:3328    190:8892    191:1308   
 192:11002   193:8634    194:7033    195:4965    196:2951    197:2392   
 198:5998    199:6043    200:7583    201:5833    202:10499   203:10031  
 204:4539    205:3451    206:3747    207:3393    208:4027    209:4697   
 210:4364    211:2439    212:4045    213:3416    214:1147    215:66     
 216:6483    217:2673    218:1295    219:573     220:1945    221:1009   
 222:825     223:2155   

End of report


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