[menog] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Sep 30 18:03:00 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 01 Oct, 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:                              910553
    Prefixes after maximum aggregation (per Origin AS):          343775
    Deaggregation factor:                                          2.65
    Unique aggregates announced (without unneeded subnets):      440139
Total ASes present in the Internet Routing Table:                 73683
    Prefixes per ASN:                                             12.36
Origin-only ASes present in the Internet Routing Table:           63291
Origin ASes announcing only one prefix:                           26001
Transit ASes present in the Internet Routing Table:               10392
Transit-only ASes present in the Internet Routing Table:            401
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:              1073
    Number of instances of unregistered ASNs:                      1074
Number of 32-bit ASNs allocated by the RIRs:                      40302
Number of 32-bit ASNs visible in the Routing Table:               33423
Prefixes from 32-bit ASNs in the Routing Table:                  160828
Number of bogon 32-bit ASNs visible in the Routing Table:            13
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            518
Number of addresses announced to Internet:                   3065307520
    Equivalent to 182 /8s, 180 /16s and 225 /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:      308807

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

Prefixes being announced by APNIC Region ASes:                   237924
    Total APNIC prefixes after maximum aggregation:               67674
    APNIC Deaggregation factor:                                    3.52
Prefixes being announced from the APNIC address blocks:          232823
    Unique aggregates announced from the APNIC address blocks:    96420
APNIC Region origin ASes present in the Internet Routing Table:   12986
    APNIC Prefixes per ASN:                                       17.93
APNIC Region origin ASes announcing only one prefix:               3746
APNIC Region transit ASes present in the Internet Routing Table:   1742
Average APNIC Region AS path length visible:                        4.6
    Max APNIC Region AS path length visible:                         27
Number of APNIC region 32-bit ASNs visible in the Routing Table:   8224
Number of APNIC addresses announced to Internet:              773828352
    Equivalent to 46 /8s, 31 /16s and 175 /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:                    265561
    Total ARIN prefixes after maximum aggregation:               121579
    ARIN Deaggregation factor:                                     2.18
Prefixes being announced from the ARIN address blocks:           266493
    Unique aggregates announced from the ARIN address blocks:    128522
ARIN Region origin ASes present in the Internet Routing Table:    19044
    ARIN Prefixes per ASN:                                        13.99
ARIN Region origin ASes announcing only one prefix:                6929
ARIN Region transit ASes present in the Internet Routing Table:    1925
Average ARIN Region AS path length visible:                         3.8
    Max ARIN Region AS path length visible:                          33
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4619
Number of ARIN addresses announced to Internet:              1290929152
    Equivalent to 76 /8s, 242 /16s and 4 /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:                    261023
    Total RIPE prefixes after maximum aggregation:               120192
    RIPE Deaggregation factor:                                     2.17
Prefixes being announced from the RIPE address blocks:           258094
    Unique aggregates announced from the RIPE address blocks:    153786
RIPE Region origin ASes present in the Internet Routing Table:    28202
    RIPE Prefixes per ASN:                                         9.15
RIPE Region origin ASes announcing only one prefix:               12049
RIPE Region transit ASes present in the Internet Routing Table:    3995
Average RIPE Region AS path length visible:                         4.2
    Max RIPE Region AS path length visible:                          35
Number of RIPE region 32-bit ASNs visible in the Routing Table:   10834
Number of RIPE addresses announced to Internet:               716326784
    Equivalent to 42 /8s, 178 /16s and 71 /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:                  116548
    Total LACNIC prefixes after maximum aggregation:              27977
    LACNIC Deaggregation factor:                                   4.17
Prefixes being announced from the LACNIC address blocks:         116184
    Unique aggregates announced from the LACNIC address blocks:   49060
LACNIC Region origin ASes present in the Internet Routing Table:  10972
    LACNIC Prefixes per ASN:                                      10.59
LACNIC Region origin ASes announcing only one prefix:              2693
LACNIC Region transit ASes present in the Internet Routing Table:  2211
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:  8735
Number of LACNIC addresses announced to Internet:             176082688
    Equivalent to 10 /8s, 126 /16s and 207 /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:                  28424
    Total AfriNIC prefixes after maximum aggregation:              5557
    AfriNIC Deaggregation factor:                                  5.11
Prefixes being announced from the AfriNIC address blocks:         36441
    Unique aggregates announced from the AfriNIC address blocks:  11920
AfriNIC Region origin ASes present in the Internet Routing Table:  1679
    AfriNIC Prefixes per ASN:                                     21.70
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:                       37
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1011
Number of AfriNIC addresses announced to Internet:            107854592
    Equivalent to 6 /8s, 109 /16s and 187 /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        9070       8884      50  CHINAMOBILE-CN China Mobile Communicati
  7545        5924        786     698  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4722       4192      75  ERX-CERNET-BKB China Education and Rese
  7552        3588       1330      20  VIETEL-AS-AP Viettel Group, VN
  7713        3497       1042      61  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3375       1870      59  VNPT-AS-VN VNPT Corp, VN
  4766        2468      11252     600  KIXS-AS-KR Korea Telecom, KR
  9498        2454        499     237  BBIL-AP BHARTI Airtel Ltd., IN
 24560        2232        851     411  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd
 45090        2178       1438      79  TENCENT-NET-AP Shenzhen Tencent Compute

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        7321      10558    2826  AMAZON-02, US
 11492        4548        301     624  CABLEONE, US
  7155        3898        265      32  VIASAT-SP-BACKBONE, US
 22773        3771       3062     344  ASN-CXA-ALL-CCI-22773-RDC, US
 16625        3547       1849    2543  AKAMAI-AS, US
  6327        3490       1319      64  SHAW, CA
   749        3032      50727    2290  DNIC-AS-00749, US
 30036        2605        368     263  MEDIACOM-ENTERPRISE-BUSINESS, US
396982        2544       3479     342  GOOGLE-CLOUD-PLATFORM, US
   209        2345       4934     392  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
  9121        6892       1692      17  TTNET, TR
 12479        6882       1730     144  UNI2-AS, ES
 20940        4088       3381     211  AKAMAI-ASN1, NL
 39891        4010        234      47  ALJAWWALSTC-AS, SA
  8551        3987        374      38  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2946       2290     913  ROSTELECOM-AS, RU
  9009        2614        252    1342  M247, RO
  6849        2534        339      20  UKRTELNET, UA
 34984        2255        358     632  TELLCOM-AS, TR
 47331        2002        314    1514  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       11022       3392     559  Uninet S.A. de C.V., MX
 10620        3484        513     829  Telmex Colombia S.A., CO
 11830        2302        369      64  Instituto Costarricense de Electricidad
 13999        2036        333     533  Mega Cable, S.A. de C.V., MX
 28573        1349       2328     264  Claro NXT Telecomunicacoes Ltda, BR
  6503        1291        338     520  Axtel, S.A.B. de C.V., MX
  3816        1279        712     148  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6147        1139        369      21  Telefonica del Peru S.A.A., PE
 11664        1067        180     463  Techtel LMDS Comunicaciones Interactiva
 26615         987       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        1569        393      21  LINKdotNET-AS, EG
 24835        1520        521      31  RAYA-AS, EG
 36992        1349       1519     270  ETISALAT-MISR, EG
 36903        1268        550      99  MT-MPLS, MA
 29571        1006         68      32  ORANGE-COTE-IVOIRE, CI
 36935         814        520      42  Vodafone-, EG
  6713         611       1863      34  IAM-AS, MA
 15399         523         53      41  WANANCHI-, KE
 37342         488         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       11022       3392     559  Uninet S.A. de C.V., MX
  9808        9070       8884      50  CHINAMOBILE-CN China Mobile Communicati
 16509        7321      10558    2826  AMAZON-02, US
  9121        6892       1692      17  TTNET, TR
 12479        6882       1730     144  UNI2-AS, ES
  7545        5924        786     698  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4722       4192      75  ERX-CERNET-BKB China Education and Rese
 11492        4548        301     624  CABLEONE, US
 20940        4088       3381     211  AKAMAI-ASN1, NL
 39891        4010        234      47  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        9070         9020  CHINAMOBILE-CN China Mobile Communications Grou
  9121        6892         6875  TTNET, TR
 12479        6882         6738  UNI2-AS, ES
  7545        5924         5226  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4722         4647  ERX-CERNET-BKB China Education and Research Net
 16509        7321         4495  AMAZON-02, US
 39891        4010         3963  ALJAWWALSTC-AS, SA
  8551        3987         3949  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 11492        4548         3924  CABLEONE, US
 20940        4088         3877  AKAMAI-ASN1, NL

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

List of Unregistered Origin ASNs (Global)
-----------------------------------------

    Bad AS  Designation  Net Originated      Transit AS  Transit AS Name
    398083  UNALLOCATED  5.133.124.0/24          399587  UT, US
     33123  UNALLOCATED  8.10.69.0/24             11168  SCC, US
     25674  UNALLOCATED  8.12.76.0/24              3356  LEVEL3, US
     25674  UNALLOCATED  8.14.115.0/24             3356  LEVEL3, US
     12169  UNALLOCATED  8.15.207.0/24            32787  PROLEXIC-TECHNOLOGIES-DDOS-M
     25674  UNALLOCATED  8.19.146.0/24             3356  LEVEL3, 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
    394936  UNALLOCATED  8.33.224.0/24            22442  HOU-PHONOSCOPE, 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      /10:39      /11:100     /12:295     
/13:589     /14:1199    /15:2043    /16:13499   /17:8353    /18:13932   
/19:25161   /20:44377   /21:52350   /22:109462  /23:97464   /24:540873  
/25:788     /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        6036        6892  TTNET, TR
 12479        5890        6882  UNI2-AS, ES
  8151        4762       11022  Uninet S.A. de C.V., MX
 11492        3471        4548  CABLEONE, US
  8551        3451        3987  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  6327        3299        3490  SHAW, CA
 39891        3193        4010  ALJAWWALSTC-AS, SA
  7155        2987        3898  VIASAT-SP-BACKBONE, US
 22773        2793        3771  ASN-CXA-ALL-CCI-22773-RDC, US
  6849        2391        2534  UKRTELNET, UA

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

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

   1:1904      2:1026      3:166       4:5         5:3910      6:116    
   7:6         8:1597      9:1        11:173      12:1626     13:344    
  14:2373     15:266      16:67       17:361      18:332      20:238    
  21:4        22:188      23:5944     24:2453     25:6        27:2664   
  29:19       31:2431     32:94       34:7        35:89       36:1865   
  37:4475     38:3632     39:745      40:153      41:3943     42:1176   
  43:2264     44:292      45:16216    46:4181     47:371      49:1722   
  50:1932     51:242      52:1496     54:388      55:848      56:8      
  57:76       58:1792     59:1162     60:988      61:2375     62:2548   
  63:1919     64:5623     65:2315     66:4866     67:2953     68:1203   
  69:4162     70:1310     71:678      72:2979     74:2645     75:1479   
  76:592      77:2258     78:3995     79:3141     80:2035     81:1784   
  82:1514     83:1213     84:1429     85:3710     86:735      87:1909   
  88:2828     89:3407     90:543      91:7591     92:2038     93:2547   
  94:3540     95:4782     96:1320     97:344      98:1033     99:737    
 100:76      101:1065    102:2297    103:30158   104:4563    105:472    
 106:887     107:2530    108:899     109:4313    110:2018    111:3322   
 112:2043    113:1541    114:1515    115:2009    116:1919    117:2485   
 118:2326    119:1845    120:1737    121:1079    122:2550    123:2105   
 124:1558    125:2169    128:1230    129:1009    130:954     131:2031   
 132:825     133:378     134:1897    135:292     136:865     137:880    
 138:2524    139:1515    140:1055    141:1471    142:1356    143:1410   
 144:1190    145:347     146:1870    147:1521    148:2246    149:1816   
 150:880     151:1108    152:1814    153:468     154:3824    155:1436   
 156:1678    157:1280    158:1042    159:2195    160:2538    161:1360   
 162:3493    163:1416    164:1679    165:1641    166:796     167:1718   
 168:3834    169:870     170:4552    171:853     172:3394    173:3102   
 174:1019    175:1152    176:3594    177:4723    178:3556    179:2143   
 180:2337    181:3263    182:3238    183:1935    184:2343    185:19777  
 186:4580    187:3927    188:4014    189:3494    190:8978    191:1449   
 192:10996   193:8718    194:7147    195:5044    196:2973    197:2462   
 198:5989    199:6033    200:7646    201:5789    202:10568   203:10037  
 204:4519    205:3478    206:3884    207:3417    208:4043    209:4742   
 210:4337    211:2435    212:4064    213:3551    214:1116    215:54     
 216:6428    217:2634    218:1292    219:571     220:2035    221:923    
 222:821     223:2014   

End of report


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