[menog] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Aug 19 18:03:08 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 20 Aug, 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:                              906799
    Prefixes after maximum aggregation (per Origin AS):          341924
    Deaggregation factor:                                          2.65
    Unique aggregates announced (without unneeded subnets):      438673
Total ASes present in the Internet Routing Table:                 73575
    Prefixes per ASN:                                             12.32
Origin-only ASes present in the Internet Routing Table:           63118
Origin ASes announcing only one prefix:                           25979
Transit ASes present in the Internet Routing Table:               10457
Transit-only ASes present in the Internet Routing Table:            392
Average AS path length visible in the Internet Routing Table:       4.3
    Max AS path length visible:                                      55
    Max AS path prepend of ASN (265020)                              50
Prefixes from unregistered ASNs in the Routing Table:               970
    Number of instances of unregistered ASNs:                       970
Number of 32-bit ASNs allocated by the RIRs:                      40018
Number of 32-bit ASNs visible in the Routing Table:               33216
Prefixes from 32-bit ASNs in the Routing Table:                  158507
Number of bogon 32-bit ASNs visible in the Routing Table:            12
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            512
Number of addresses announced to Internet:                   3070880896
    Equivalent to 183 /8s, 9 /16s and 236 /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:      307937

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

Prefixes being announced by APNIC Region ASes:                   236463
    Total APNIC prefixes after maximum aggregation:               67388
    APNIC Deaggregation factor:                                    3.51
Prefixes being announced from the APNIC address blocks:          231571
    Unique aggregates announced from the APNIC address blocks:    96339
APNIC Region origin ASes present in the Internet Routing Table:   12882
    APNIC Prefixes per ASN:                                       17.98
APNIC Region origin ASes announcing only one prefix:               3733
APNIC Region transit ASes present in the Internet Routing Table:   1764
Average APNIC Region AS path length visible:                        4.6
    Max APNIC Region AS path length visible:                         26
Number of APNIC region 32-bit ASNs visible in the Routing Table:   8120
Number of APNIC addresses announced to Internet:              773185536
    Equivalent to 46 /8s, 21 /16s and 224 /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:                    264708
    Total ARIN prefixes after maximum aggregation:               120974
    ARIN Deaggregation factor:                                     2.19
Prefixes being announced from the ARIN address blocks:           264954
    Unique aggregates announced from the ARIN address blocks:    127622
ARIN Region origin ASes present in the Internet Routing Table:    19052
    ARIN Prefixes per ASN:                                        13.91
ARIN Region origin ASes announcing only one prefix:                6911
ARIN Region transit ASes present in the Internet Routing Table:    1919
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:    4590
Number of ARIN addresses announced to Internet:              1295730432
    Equivalent to 77 /8s, 59 /16s and 71 /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:                    260394
    Total RIPE prefixes after maximum aggregation:               119511
    RIPE Deaggregation factor:                                     2.18
Prefixes being announced from the RIPE address blocks:           257688
    Unique aggregates announced from the RIPE address blocks:    153309
RIPE Region origin ASes present in the Internet Routing Table:    28203
    RIPE Prefixes per ASN:                                         9.14
RIPE Region origin ASes announcing only one prefix:               12083
RIPE Region transit ASes present in the Internet Routing Table:    4016
Average RIPE Region AS path length visible:                         4.3
    Max RIPE Region AS path length visible:                          36
Number of RIPE region 32-bit ASNs visible in the Routing Table:   10793
Number of RIPE addresses announced to Internet:               717746048
    Equivalent to 42 /8s, 199 /16s and 239 /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:                  116175
    Total LACNIC prefixes after maximum aggregation:              27773
    LACNIC Deaggregation factor:                                   4.18
Prefixes being announced from the LACNIC address blocks:         115864
    Unique aggregates announced from the LACNIC address blocks:   48967
LACNIC Region origin ASes present in the Internet Routing Table:  10980
    LACNIC Prefixes per ASN:                                      10.55
LACNIC Region origin ASes announcing only one prefix:              2668
LACNIC Region transit ASes present in the Internet Routing Table:  2249
Average LACNIC Region AS path length visible:                       5.0
    Max LACNIC Region AS path length visible:                        55
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8709
Number of LACNIC addresses announced to Internet:             176428800
    Equivalent to 10 /8s, 132 /16s and 23 /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:                  28088
    Total AfriNIC prefixes after maximum aggregation:              5525
    AfriNIC Deaggregation factor:                                  5.08
Prefixes being announced from the AfriNIC address blocks:         36210
    Unique aggregates announced from the AfriNIC address blocks:  11999
AfriNIC Region origin ASes present in the Internet Routing Table:  1674
    AfriNIC Prefixes per ASN:                                     21.63
AfriNIC Region origin ASes announcing only one prefix:              584
AfriNIC Region transit ASes present in the Internet Routing Table:  326
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: 1004
Number of AfriNIC addresses announced to Internet:            107498752
    Equivalent to 6 /8s, 104 /16s and 77 /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        9098       8883      47  CHINAMOBILE-CN China Mobile Communicati
  7545        5921        789     700  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4712       4192      75  ERX-CERNET-BKB China Education and Rese
  7552        3587       1330      20  VIETEL-AS-AP Viettel Group, VN
  7713        3509       1042      61  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3376       1877      67  VNPT-AS-VN VNPT Corp, VN
  4766        2492      11123     599  KIXS-AS-KR Korea Telecom, KR
  9498        2425        499     238  BBIL-AP BHARTI Airtel Ltd., IN
 45090        2181       1438      79  TENCENT-NET-AP Shenzhen Tencent Compute
 24560        2170        847     406  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd

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        6857      10400    2723  AMAZON-02, US
 11492        4532        300     580  CABLEONE, US
  7155        3906        265      32  VIASAT-SP-BACKBONE, US
 22773        3820       3064     353  ASN-CXA-ALL-CCI-22773-RDC, US
 16625        3469       1790    2501  AKAMAI-AS, US
  6327        3450       1319      63  SHAW, CA
   749        3034      50728    2292  DNIC-AS-00749, US
 30036        2603        369     268  MEDIACOM-ENTERPRISE-BUSINESS, US
396982        2528       3387     363  GOOGLE-CLOUD-PLATFORM, US
   209        2367       4936     405  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        6873       1730     144  UNI2-AS, ES
  9121        6611       1692      17  TTNET, TR
 20940        4059       3348     219  AKAMAI-ASN1, NL
 39891        4006        234      46  ALJAWWALSTC-AS, SA
  8551        3999        374      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2941       2290     911  ROSTELECOM-AS, RU
  6849        2759        355      21  UKRTELNET, UA
  9009        2592        252    1323  M247, GB
 34984        2248        358     631  TELLCOM-AS, TR
 47331        2062        324    1562  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       10851       3393     556  Uninet S.A. de C.V., MX
 10620        3488        515     783  Telmex Colombia S.A., CO
 11830        2335        369      64  Instituto Costarricense de Electricidad
 13999        1959        318     525  Mega Cable, S.A. de C.V., MX
 28573        1359       2328     264  Claro NXT Telecomunicacoes Ltda, BR
  6503        1288        338     520  Axtel, S.A.B. de C.V., MX
  3816        1272        697     155  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6147        1127        369      21  Telefonica del Peru S.A.A., PE
 11664        1051        177     460  Techtel LMDS Comunicaciones Interactiva
 26615         976       2466      43  TIM SA, BR

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

AfriNIC Region per AS prefix count summary
------------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 24835        1546        521      31  RAYA-AS, EG
 24863        1532        393      21  LINKdotNET-AS, EG
 36992        1324       1519     268  ETISALAT-MISR, EG
 36903        1268        550      99  MT-MPLS, MA
 29571         983         67      46  ORANGE-COTE-IVOIRE, CI
 36935         810        520      42  Vodafone-, EG
  6713         611       1863      34  IAM-AS, MA
 15399         520         52      39  WANANCHI-, KE
 37342         481         32       1  MOVITEL, MZ
 23889         401        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       10851       3393     556  Uninet S.A. de C.V., MX
  9808        9098       8883      47  CHINAMOBILE-CN China Mobile Communicati
 12479        6873       1730     144  UNI2-AS, ES
 16509        6857      10400    2723  AMAZON-02, US
  9121        6611       1692      17  TTNET, TR
  7545        5921        789     700  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4712       4192      75  ERX-CERNET-BKB China Education and Rese
 11492        4532        300     580  CABLEONE, US
 20940        4059       3348     219  AKAMAI-ASN1, NL
 39891        4006        234      46  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        9098         9051  CHINAMOBILE-CN China Mobile Communications Grou
 12479        6873         6729  UNI2-AS, ES
  9121        6611         6594  TTNET, TR
  7545        5921         5221  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4712         4637  ERX-CERNET-BKB China Education and Research Net
 16509        6857         4134  AMAZON-02, US
 39891        4006         3960  ALJAWWALSTC-AS, SA
  8551        3999         3960  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 11492        4532         3952  CABLEONE, US
  7155        3906         3874  VIASAT-SP-BACKBONE, 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
23.128.80.0/24       Origin:    397372  UNASSIGNED
23.128.80.0/24      Transit:       577  BACOM, CA
23.139.184.0/24      Origin:     27408  1371467, CA
23.139.184.0/24     Transit:     24875  NOVOSERVE-AS, NL
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

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      /11:101     /12:303     
/13:595     /14:1209    /15:2065    /16:13534   /17:8341    /18:13941   
/19:25114   /20:44460   /21:52285   /22:109097  /23:97154   /24:537729  
/25:802     /26:0       /27:0       /28:0       /29:0       /30:0       
/31:0       /32:0       

Advertised prefixes smaller than registry allocations
-----------------------------------------------------

   ASN  No of nets  Total ann.  Description
 12479        5858        6873  UNI2-AS, ES
  9121        5768        6611  TTNET, TR
  8151        4580       10851  Uninet S.A. de C.V., MX
  8551        3457        3999  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 11492        3447        4532  CABLEONE, US
  6327        3261        3450  SHAW, CA
 39891        3189        4006  ALJAWWALSTC-AS, SA
  7155        2995        3906  VIASAT-SP-BACKBONE, US
 22773        2834        3820  ASN-CXA-ALL-CCI-22773-RDC, US
  6849        2616        2759  UKRTELNET, UA

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

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

   1:1964      2:1027      3:157       4:5         5:3850      6:114    
   7:6         8:1587      9:1        11:173      12:1643     13:338    
  14:2363     15:242      16:45       17:379      18:190      20:243    
  21:4        22:188      23:5847     24:2418     25:6        27:2614   
  29:19       31:2415     32:95       34:7        35:87       36:1834   
  37:4466     38:3413     39:721      40:153      41:3897     42:1145   
  43:2199     44:291      45:16088    46:4167     47:331      49:1709   
  50:1957     51:239      52:1460     54:385      55:792      56:8      
  57:58       58:1796     59:1165     60:974      61:2292     62:2547   
  63:1926     64:5581     65:2364     66:4868     67:2966     68:1206   
  69:4155     70:1318     71:682      72:3024     74:2656     75:1405   
  76:582      77:2246     78:3960     79:3126     80:2021     81:1780   
  82:1495     83:1217     84:1376     85:3715     86:745      87:1909   
  88:2810     89:3406     90:547      91:7652     92:2047     93:2546   
  94:3522     95:4801     96:1301     97:351      98:1021     99:721    
 100:77      101:1050    102:2239    103:29660   104:4572    105:470    
 106:887     107:2549    108:879     109:4332    110:2006    111:3332   
 112:2057    113:1538    114:1485    115:1985    116:1917    117:2454   
 118:2313    119:1814    120:1791    121:1077    122:2512    123:2075   
 124:1580    125:2137    128:1243    129:1046    130:1007    131:2049   
 132:784     133:378     134:1935    135:300     136:853     137:876    
 138:2508    139:1505    140:936     141:1451    142:1324    143:1396   
 144:1201    145:341     146:1848    147:1512    148:2218    149:1778   
 150:859     151:1077    152:1876    153:465     154:3730    155:1456   
 156:1703    157:1274    158:1037    159:2207    160:2522    161:1331   
 162:3507    163:1371    164:1634    165:1631    166:786     167:1757   
 168:3839    169:880     170:4502    171:840     172:3329    173:3133   
 174:1023    175:1143    176:3638    177:4732    178:3563    179:2181   
 180:2341    181:3256    182:3238    183:1939    184:2375    185:19637  
 186:4515    187:3838    188:3988    189:3426    190:8979    191:1437   
 192:10983   193:8695    194:7103    195:5072    196:2968    197:2426   
 198:6010    199:6039    200:7640    201:5779    202:10470   203:10022  
 204:4515    205:3441    206:3758    207:3442    208:4068    209:4716   
 210:4367    211:2407    212:4042    213:3472    214:1136    215:66     
 216:6393    217:2622    218:1288    219:574     220:2014    221:951    
 222:828     223:1988   

End of report


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