[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Jul 8 18:02:43 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 09 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:                              901852
    Prefixes after maximum aggregation (per Origin AS):          340057
    Deaggregation factor:                                          2.65
    Unique aggregates announced (without unneeded subnets):      435937
Total ASes present in the Internet Routing Table:                 73344
    Prefixes per ASN:                                             12.30
Origin-only ASes present in the Internet Routing Table:           62930
Origin ASes announcing only one prefix:                           25891
Transit ASes present in the Internet Routing Table:               10414
Transit-only ASes present in the Internet Routing Table:            398
Average AS path length visible in the Internet Routing Table:       4.3
    Max AS path length visible:                                      61
    Max AS path prepend of ASN ( 37447)                              57
Prefixes from unregistered ASNs in the Routing Table:              1002
    Number of instances of unregistered ASNs:                      1008
Number of 32-bit ASNs allocated by the RIRs:                      39756
Number of 32-bit ASNs visible in the Routing Table:               32939
Prefixes from 32-bit ASNs in the Routing Table:                  156584
Number of bogon 32-bit ASNs visible in the Routing Table:            29
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            516
Number of addresses announced to Internet:                   3062942464
    Equivalent to 182 /8s, 144 /16s and 203 /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:      306465

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

Prefixes being announced by APNIC Region ASes:                   235479
    Total APNIC prefixes after maximum aggregation:               66986
    APNIC Deaggregation factor:                                    3.52
Prefixes being announced from the APNIC address blocks:          230596
    Unique aggregates announced from the APNIC address blocks:    95547
APNIC Region origin ASes present in the Internet Routing Table:   12769
    APNIC Prefixes per ASN:                                       18.06
APNIC Region origin ASes announcing only one prefix:               3689
APNIC Region transit ASes present in the Internet Routing Table:   1747
Average APNIC Region AS path length visible:                        4.7
    Max APNIC Region AS path length visible:                         26
Number of APNIC region 32-bit ASNs visible in the Routing Table:   7982
Number of APNIC addresses announced to Internet:              773025664
    Equivalent to 46 /8s, 19 /16s and 111 /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:                    262615
    Total ARIN prefixes after maximum aggregation:               120341
    ARIN Deaggregation factor:                                     2.18
Prefixes being announced from the ARIN address blocks:           262826
    Unique aggregates announced from the ARIN address blocks:    126769
ARIN Region origin ASes present in the Internet Routing Table:    19008
    ARIN Prefixes per ASN:                                        13.83
ARIN Region origin ASes announcing only one prefix:                6906
ARIN Region transit ASes present in the Internet Routing Table:    1950
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:    4546
Number of ARIN addresses announced to Internet:              1291235840
    Equivalent to 76 /8s, 246 /16s and 178 /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:                    259218
    Total RIPE prefixes after maximum aggregation:               118815
    RIPE Deaggregation factor:                                     2.18
Prefixes being announced from the RIPE address blocks:           256618
    Unique aggregates announced from the RIPE address blocks:    152619
RIPE Region origin ASes present in the Internet Routing Table:    28162
    RIPE Prefixes per ASN:                                         9.11
RIPE Region origin ASes announcing only one prefix:               12055
RIPE Region transit ASes present in the Internet Routing Table:    3990
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:   10738
Number of RIPE addresses announced to Internet:               714138240
    Equivalent to 42 /8s, 144 /16s and 226 /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:                  115591
    Total LACNIC prefixes after maximum aggregation:              27662
    LACNIC Deaggregation factor:                                   4.18
Prefixes being announced from the LACNIC address blocks:         115395
    Unique aggregates announced from the LACNIC address blocks:   48761
LACNIC Region origin ASes present in the Internet Routing Table:  10964
    LACNIC Prefixes per ASN:                                      10.52
LACNIC Region origin ASes announcing only one prefix:              2667
LACNIC Region transit ASes present in the Internet Routing Table:  2245
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:  8695
Number of LACNIC addresses announced to Internet:             176544256
    Equivalent to 10 /8s, 133 /16s and 218 /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:                  27947
    Total AfriNIC prefixes after maximum aggregation:              5497
    AfriNIC Deaggregation factor:                                  5.08
Prefixes being announced from the AfriNIC address blocks:         35901
    Unique aggregates announced from the AfriNIC address blocks:  11808
AfriNIC Region origin ASes present in the Internet Routing Table:  1648
    AfriNIC Prefixes per ASN:                                     21.78
AfriNIC Region origin ASes announcing only one prefix:              574
AfriNIC Region transit ASes present in the Internet Routing Table:  319
Average AfriNIC Region AS path length visible:                      5.0
    Max AfriNIC Region AS path length visible:                       61
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:  978
Number of AfriNIC addresses announced to Internet:            107699200
    Equivalent to 6 /8s, 107 /16s and 92 /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        8993       8883      49  CHINAMOBILE-CN China Mobile Communicati
  7545        5921        787     694  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4714       4192      75  ERX-CERNET-BKB China Education and Rese
  7552        3566       1330      19  VIETEL-AS-AP Viettel Group, VN
  7713        3512       1042      59  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3426       1880      56  VNPT-AS-VN VNPT Corp, VN
  4766        2494      11125     601  KIXS-AS-KR Korea Telecom, KR
  9498        2425        499     236  BBIL-AP BHARTI Airtel Ltd., IN
 45090        2172       1438      79  TENCENT-NET-AP Shenzhen Tencent Compute
  4755        2124        425     217  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        6784      10396    2686  AMAZON-02, US
 11492        4509        299     677  CABLEONE, US
  7155        3902        265      32  VIASAT-SP-BACKBONE, US
 22773        3874       3068     354  ASN-CXA-ALL-CCI-22773-RDC, US
 16625        3470       1788    2509  AKAMAI-AS, US
  6327        3438       1319      63  SHAW, CA
   749        2991      50739    2249  DNIC-AS-00749, US
 30036        2633        375     130  MEDIACOM-ENTERPRISE-BUSINESS, US
396982        2510       3343     359  GOOGLE-CLOUD-PLATFORM, US
   209        2414       4936     413  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        6861       1730     144  UNI2-AS, ES
  9121        6711       1692      17  TTNET, TR
  8551        4009        374      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 39891        4005        234      45  ALJAWWALSTC-AS, SA
 20940        3998       3361     206  AKAMAI-ASN1, NL
 12389        2934       2287     907  ROSTELECOM-AS, RU
  6849        2718        355      21  UKRTELNET, UA
  9009        2578        254    1334  M247, GB
 34984        2251        358     639  TELLCOM-AS, TR
 47331        2069        325    1586  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       10750       3397     556  Uninet S.A. de C.V., MX
 10620        3473        514     774  Telmex Colombia S.A., CO
 11830        2432        369      64  Instituto Costarricense de Electricidad
 13999        1910        314     507  Mega Cable, S.A. de C.V., MX
 28573        1360       2329     273  Claro NXT Telecomunicacoes Ltda, BR
  6503        1290        338     520  Axtel, S.A.B. de C.V., MX
  3816        1262        683     152  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6147        1078        369      21  Telefonica del Peru S.A.A., PE
 11664         998        179     459  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        1610        393      21  LINKdotNET-AS, EG
 24835        1546        521      31  RAYA-AS, EG
 36992        1317       1519     271  ETISALAT-MISR, EG
 36903        1199        545     114  MT-MPLS, MA
 29571         967         65      45  ORANGE-COTE-IVOIRE, CI
 36935         789        520      42  Vodafone-, EG
  6713         610       1863      34  IAM-AS, MA
 15399         518         52      37  WANANCHI-, KE
 37342         462         32       1  MOVITEL, MZ
 23889         402        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       10750       3397     556  Uninet S.A. de C.V., MX
  9808        8993       8883      49  CHINAMOBILE-CN China Mobile Communicati
 12479        6861       1730     144  UNI2-AS, ES
 16509        6784      10396    2686  AMAZON-02, US
  9121        6711       1692      17  TTNET, TR
  7545        5921        787     694  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4714       4192      75  ERX-CERNET-BKB China Education and Rese
 11492        4509        299     677  CABLEONE, US
  8551        4009        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        8993         8944  CHINAMOBILE-CN China Mobile Communications Grou
 12479        6861         6717  UNI2-AS, ES
  9121        6711         6694  TTNET, TR
  7545        5921         5227  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4714         4639  ERX-CERNET-BKB China Education and Research Net
 16509        6784         4098  AMAZON-02, US
  8551        4009         3970  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 39891        4005         3960  ALJAWWALSTC-AS, SA
  7155        3902         3870  VIASAT-SP-BACKBONE, US
 11492        4509         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
     53775  UNALLOCATED  8.20.88.0/24              7029  WINDSTREAM, 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

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      /10:40      /11:99      /12:301     
/13:591     /14:1204    /15:2060    /16:13516   /17:8302    /18:13841   
/19:25052   /20:44312   /21:52161   /22:108817  /23:96509   /24:534227  
/25:791     /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        5866        6711  TTNET, TR
 12479        5841        6861  UNI2-AS, ES
  8151        4495       10750  Uninet S.A. de C.V., MX
  8551        3472        4009  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 11492        3416        4509  CABLEONE, US
  6327        3248        3438  SHAW, CA
 39891        3189        4005  ALJAWWALSTC-AS, SA
  7155        2991        3902  VIASAT-SP-BACKBONE, US
 22773        2892        3874  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)
----------------------------------------------

   1:1935      2:1038      3:157       4:5         5:3813      6:109    
   7:6         8:1569      9:1        11:173      12:1645     13:344    
  14:2346     15:232      16:44       17:385      18:183      19:1      
  20:238      21:4        22:188      23:5742     24:2384     25:6      
  27:2610     29:19       31:2444     32:95       34:7        35:87     
  36:1802     37:4432     38:3200     39:716      40:152      41:3892   
  42:1120     43:2220     44:288      45:15980    46:4108     47:328    
  49:1696     50:1950     51:237      52:1450     54:386      55:851    
  56:8        57:59       58:1773     59:1164     60:963      61:2272   
  62:2521     63:1935     64:5543     65:2340     66:4866     67:2951   
  68:1187     69:4182     70:1323     71:681      72:3022     74:2616   
  75:1398     76:581      77:2227     78:3927     79:3133     80:1994   
  81:1770     82:1494     83:1212     84:1335     85:3696     86:731    
  87:1908     88:2778     89:3314     90:539      91:7619     92:2010   
  93:2549     94:3475     95:4765     96:1309     97:344      98:1007   
  99:752     100:76      101:1038    102:2134    103:29365   104:4520   
 105:468     106:874     107:2551    108:863     109:4310    110:1984   
 111:3317    112:2030    113:1532    114:1478    115:1996    116:1916   
 117:2396    118:2307    119:1826    120:1691    121:1080    122:2553   
 123:2088    124:1598    125:2114    128:1228    129:1063    130:986    
 131:2020    132:783     133:377     134:1936    135:307     136:894    
 137:862     138:2461    139:1525    140:894     141:1446    142:1271   
 143:1410    144:1204    145:353     146:1814    147:1517    148:2213   
 149:1679    150:862     151:1064    152:1848    153:464     154:3652   
 155:1436    156:1688    157:1267    158:1038    159:2222    160:2503   
 161:1271    162:3463    163:1289    164:1639    165:1615    166:764    
 167:1724    168:3803    169:886     170:4522    171:835     172:3242   
 173:3112    174:1020    175:1142    176:3565    177:4660    178:3544   
 179:2151    180:2326    181:3233    182:3259    183:1942    184:2345   
 185:19611   186:4375    187:3822    188:3968    189:3409    190:8966   
 191:1487    192:10983   193:8654    194:7071    195:5003    196:2954   
 197:2421    198:5979    199:6028    200:7596    201:5860    202:10483  
 203:10054   204:4462    205:3422    206:3708    207:3371    208:4023   
 209:4649    210:4355    211:2425    212:4051    213:3435    214:1143   
 215:67      216:6470    217:2639    218:1294    219:573     220:1992   
 221:964     222:831     223:1994   

End of report


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