[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Jul 1 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 02 Jul, 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:                              902042
    Prefixes after maximum aggregation (per Origin AS):          340029
    Deaggregation factor:                                          2.65
    Unique aggregates announced (without unneeded subnets):      434638
Total ASes present in the Internet Routing Table:                 73329
    Prefixes per ASN:                                             12.30
Origin-only ASes present in the Internet Routing Table:           62916
Origin ASes announcing only one prefix:                           25883
Transit ASes present in the Internet Routing Table:               10413
Transit-only ASes present in the Internet Routing Table:            383
Average AS path length visible in the Internet Routing Table:       4.3
    Max AS path length visible:                                      65
    Max AS path prepend of ASN ( 37447)                              57
Prefixes from unregistered ASNs in the Routing Table:               903
    Number of instances of unregistered ASNs:                       908
Number of 32-bit ASNs allocated by the RIRs:                      39719
Number of 32-bit ASNs visible in the Routing Table:               32900
Prefixes from 32-bit ASNs in the Routing Table:                  156375
Number of bogon 32-bit ASNs visible in the Routing Table:            26
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            486
Number of addresses announced to Internet:                   3068212352
    Equivalent to 182 /8s, 225 /16s and 52 /24s
    Percentage of available address space announced:               82.9
    Percentage of allocated address space announced:               82.9
    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:      306196

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

Prefixes being announced by APNIC Region ASes:                   235588
    Total APNIC prefixes after maximum aggregation:               67010
    APNIC Deaggregation factor:                                    3.52
Prefixes being announced from the APNIC address blocks:          230804
    Unique aggregates announced from the APNIC address blocks:    95412
APNIC Region origin ASes present in the Internet Routing Table:   12750
    APNIC Prefixes per ASN:                                       18.10
APNIC Region origin ASes announcing only one prefix:               3668
APNIC Region transit ASes present in the Internet Routing Table:   1746
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:   7966
Number of APNIC addresses announced to Internet:              773059328
    Equivalent to 46 /8s, 19 /16s and 243 /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:                    263347
    Total ARIN prefixes after maximum aggregation:               120546
    ARIN Deaggregation factor:                                     2.18
Prefixes being announced from the ARIN address blocks:           263570
    Unique aggregates announced from the ARIN address blocks:    126880
ARIN Region origin ASes present in the Internet Routing Table:    19048
    ARIN Prefixes per ASN:                                        13.84
ARIN Region origin ASes announcing only one prefix:                6908
ARIN Region transit ASes present in the Internet Routing Table:    1945
Average ARIN Region AS path length visible:                         3.8
    Max ARIN Region AS path length visible:                          34
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4543
Number of ARIN addresses announced to Internet:              1296755200
    Equivalent to 77 /8s, 74 /16s and 234 /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:                    258869
    Total RIPE prefixes after maximum aggregation:               118611
    RIPE Deaggregation factor:                                     2.18
Prefixes being announced from the RIPE address blocks:           256176
    Unique aggregates announced from the RIPE address blocks:    151681
RIPE Region origin ASes present in the Internet Routing Table:    28148
    RIPE Prefixes per ASN:                                         9.10
RIPE Region origin ASes announcing only one prefix:               12040
RIPE Region transit ASes present in the Internet Routing Table:    3984
Average RIPE Region AS path length visible:                         4.3
    Max RIPE Region AS path length visible:                          35
Number of RIPE region 32-bit ASNs visible in the Routing Table:   10715
Number of RIPE addresses announced to Internet:               713945728
    Equivalent to 42 /8s, 141 /16s and 242 /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:                  115408
    Total LACNIC prefixes after maximum aggregation:              27658
    LACNIC Deaggregation factor:                                   4.17
Prefixes being announced from the LACNIC address blocks:         115182
    Unique aggregates announced from the LACNIC address blocks:   48711
LACNIC Region origin ASes present in the Internet Routing Table:  10979
    LACNIC Prefixes per ASN:                                      10.49
LACNIC Region origin ASes announcing only one prefix:              2692
LACNIC Region transit ASes present in the Internet Routing Table:  2244
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:  8699
Number of LACNIC addresses announced to Internet:             176466944
    Equivalent to 10 /8s, 132 /16s and 172 /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:                  27927
    Total AfriNIC prefixes after maximum aggregation:              5508
    AfriNIC Deaggregation factor:                                  5.07
Prefixes being announced from the AfriNIC address blocks:         35824
    Unique aggregates announced from the AfriNIC address blocks:  11541
AfriNIC Region origin ASes present in the Internet Routing Table:  1649
    AfriNIC Prefixes per ASN:                                     21.72
AfriNIC Region origin ASes announcing only one prefix:              575
AfriNIC Region transit ASes present in the Internet Routing Table:  325
Average AfriNIC Region AS path length visible:                      5.1
    Max AfriNIC Region AS path length visible:                       65
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:  977
Number of AfriNIC addresses announced to Internet:            107706112
    Equivalent to 6 /8s, 107 /16s and 119 /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        9265       8883      49  CHINAMOBILE-CN China Mobile Communicati
  7545        5927        789     695  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4714       4192      75  ERX-CERNET-BKB China Education and Rese
  7552        3529       1330      19  VIETEL-AS-AP Viettel Group, VN
  7713        3497       1039      53  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3427       1880      56  VNPT-AS-VN VNPT Corp, VN
  4766        2494      11125     600  KIXS-AS-KR Korea Telecom, KR
  9498        2422        499     236  BBIL-AP BHARTI Airtel Ltd., IN
 45090        2172       1438      79  TENCENT-NET-AP Shenzhen Tencent Compute
  4755        2124        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        6703      10379    2680  AMAZON-02, US
 11492        4507        299     675  CABLEONE, US
  7155        3901        264      31  VIASAT-SP-BACKBONE, US
 22773        3880       3146     354  ASN-CXA-ALL-CCI-22773-RDC, US
 16625        3470       1784    2506  AKAMAI-AS, US
  6327        3437       1319      63  SHAW, CA
   749        2991      50739    2249  DNIC-AS-00749, US
 30036        2631        374     139  MEDIACOM-ENTERPRISE-BUSINESS, US
396982        2510       3343     359  GOOGLE-CLOUD-PLATFORM, US
   209        2433       4953     416  CENTURYLINK-US-LEGACY-QWEST, 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        6884       1730     144  UNI2-AS, ES
  9121        6725       1692      17  TTNET, TR
  8551        4011        374      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 39891        4005        234      45  ALJAWWALSTC-AS, SA
 20940        4001       3361     206  AKAMAI-ASN1, NL
 12389        2943       2289     910  ROSTELECOM-AS, RU
  6849        2718        355      21  UKRTELNET, UA
  9009        2563        253    1328  M247, GB
 34984        2245        358     634  TELLCOM-AS, TR
 47331        2075        326    1591  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       10768       3403     549  Uninet S.A. de C.V., MX
 10620        3472        514     773  Telmex Colombia S.A., CO
 11830        2436        369      64  Instituto Costarricense de Electricidad
 13999        1894        311     498  Mega Cable, S.A. de C.V., MX
 28573        1376       2330     274  Claro NXT Telecomunicacoes Ltda, BR
  6503        1303        343     523  Axtel, S.A.B. de C.V., MX
  3816        1260        675     151  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6147        1077        369      21  Telefonica del Peru S.A.A., PE
 11664        1033        190     441  Techtel LMDS Comunicaciones Interactiva
 26615         979       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
 24863        1611        393      21  LINKdotNET-AS, EG
 24835        1546        521      31  RAYA-AS, EG
 36992        1317       1519     264  ETISALAT-MISR, EG
 36903        1199        545     114  MT-MPLS, MA
 29571         959         65      57  ORANGE-COTE-IVOIRE, CI
 36935         777        520      42  Vodafone-, EG
  6713         611       1863      34  IAM-AS, MA
 15399         518         52      37  WANANCHI-, KE
 37342         463         32       1  MOVITEL, MZ
 23889         412        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       10768       3403     549  Uninet S.A. de C.V., MX
  9808        9265       8883      49  CHINAMOBILE-CN China Mobile Communicati
 12479        6884       1730     144  UNI2-AS, ES
  9121        6725       1692      17  TTNET, TR
 16509        6703      10379    2680  AMAZON-02, US
  7545        5927        789     695  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4714       4192      75  ERX-CERNET-BKB China Education and Rese
 11492        4507        299     675  CABLEONE, US
  8551        4011        374      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 39891        4005        234      45  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        9265         9216  CHINAMOBILE-CN China Mobile Communications Grou
 12479        6884         6740  UNI2-AS, ES
  9121        6725         6708  TTNET, TR
  7545        5927         5232  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4714         4639  ERX-CERNET-BKB China Education and Research Net
 16509        6703         4023  AMAZON-02, US
  8551        4011         3972  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 39891        4005         3960  ALJAWWALSTC-AS, SA
  7155        3901         3870  VIASAT-SP-BACKBONE, US
 11492        4507         3832  CABLEONE, US

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
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
41.57.124.0/24       Origin:     37442  UNASSIGNED
41.57.124.0/24      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      /11:100     /12:303     
/13:593     /14:1207    /15:2058    /16:13529   /17:8329    /18:13889   
/19:25109   /20:44440   /21:52205   /22:108759  /23:96700   /24:533951  
/25:800     /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        5880        6725  TTNET, TR
 12479        5862        6884  UNI2-AS, ES
  8151        4492       10768  Uninet S.A. de C.V., MX
  8551        3475        4011  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 11492        3414        4507  CABLEONE, US
  6327        3247        3437  SHAW, CA
 39891        3189        4005  ALJAWWALSTC-AS, SA
  7155        2991        3901  VIASAT-SP-BACKBONE, US
 22773        2898        3880  ASN-CXA-ALL-CCI-22773-RDC, US
  6849        2576        2718  UKRTELNET, UA

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

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

   1:1932      2:1040      3:157       4:5         5:3800      6:109    
   7:6         8:1567      9:1        11:173      12:1646     13:336    
  14:2352     15:227      16:44       17:385      18:175      19:1      
  20:219      21:4        22:188      23:5737     24:2387     25:6      
  27:2612     29:19       31:2450     32:95       34:7        35:87     
  36:1801     37:4423     38:3176     39:712      40:152      41:3894   
  42:1121     43:2215     44:291      45:15927    46:4127     47:328    
  49:1698     50:1945     51:237      52:1456     54:386      55:844    
  56:8        57:59       58:1774     59:1164     60:963      61:2271   
  62:2510     63:1935     64:5545     65:2349     66:4872     67:2963   
  68:1189     69:4187     70:1327     71:680      72:3042     74:2633   
  75:1395     76:579      77:2222     78:3899     79:3133     80:1984   
  81:1762     82:1497     83:1211     84:1332     85:3691     86:714    
  87:1914     88:2778     89:3327     90:541      91:7610     92:2009   
  93:2546     94:3454     95:4755     96:1309     97:351      98:1004   
  99:751     100:76      101:1051    102:2093    103:29321   104:4482   
 105:467     106:873     107:2548    108:850     109:4277    110:1987   
 111:3329    112:2040    113:1534    114:1488    115:1996    116:1909   
 117:2559    118:2296    119:1827    120:1692    121:1077    122:2539   
 123:2094    124:1596    125:2115    128:1237    129:1068    130:985    
 131:2012    132:785     133:377     134:1940    135:278     136:889    
 137:867     138:2427    139:1526    140:895     141:1442    142:1305   
 143:1431    144:1202    145:347     146:1821    147:1516    148:2210   
 149:1725    150:860     151:1069    152:1852    153:459     154:3575   
 155:1444    156:1687    157:1260    158:1040    159:2225    160:2491   
 161:1288    162:3478    163:1283    164:1635    165:1616    166:756    
 167:1720    168:3803    169:882     170:4489    171:832     172:3224   
 173:3136    174:1021    175:1141    176:3543    177:4632    178:3535   
 179:2123    180:2295    181:3059    182:3253    183:1960    184:2344   
 185:19603   186:4319    187:3807    188:3965    189:3408    190:8954   
 191:1407    192:11005   193:8667    194:7070    195:4967    196:2942   
 197:2413    198:5996    199:6050    200:7561    201:5875    202:10489  
 203:10036   204:4536    205:3472    206:3722    207:3393    208:4020   
 209:4677    210:4359    211:2427    212:4047    213:3433    214:1146   
 215:66      216:6486    217:2632    218:1293    219:574     220:1992   
 221:971     222:827     223:2194   

End of report


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