[menog] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Feb 25 18:02:54 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 26 Feb, 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:                              889606
    Prefixes after maximum aggregation (per Origin AS):          335572
    Deaggregation factor:                                          2.65
    Unique aggregates announced (without unneeded subnets):      428228
Total ASes present in the Internet Routing Table:                 72908
    Prefixes per ASN:                                             12.20
Origin-only ASes present in the Internet Routing Table:           62551
Origin ASes announcing only one prefix:                           25795
Transit ASes present in the Internet Routing Table:               10357
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:                                      53
    Max AS path prepend of ASN (265020)                              50
Prefixes from unregistered ASNs in the Routing Table:               903
    Number of instances of unregistered ASNs:                       906
Number of 32-bit ASNs allocated by the RIRs:                      38651
Number of 32-bit ASNs visible in the Routing Table:               32221
Prefixes from 32-bit ASNs in the Routing Table:                  150454
Number of bogon 32-bit ASNs visible in the Routing Table:            22
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            504
Number of addresses announced to Internet:                   3068244224
    Equivalent to 182 /8s, 225 /16s and 177 /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:               99.5
Total number of prefixes smaller than registry allocations:      300926

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

Prefixes being announced by APNIC Region ASes:                   233321
    Total APNIC prefixes after maximum aggregation:               66019
    APNIC Deaggregation factor:                                    3.53
Prefixes being announced from the APNIC address blocks:          228154
    Unique aggregates announced from the APNIC address blocks:    94305
APNIC Region origin ASes present in the Internet Routing Table:   12445
    APNIC Prefixes per ASN:                                       18.33
APNIC Region origin ASes announcing only one prefix:               3575
APNIC Region transit ASes present in the Internet Routing Table:   1715
Average APNIC Region AS path length visible:                        4.6
    Max APNIC Region AS path length visible:                         29
Number of APNIC region 32-bit ASNs visible in the Routing Table:   7637
Number of APNIC addresses announced to Internet:              773963648
    Equivalent to 46 /8s, 33 /16s and 191 /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:                    259328
    Total ARIN prefixes after maximum aggregation:               119363
    ARIN Deaggregation factor:                                     2.17
Prefixes being announced from the ARIN address blocks:           259441
    Unique aggregates announced from the ARIN address blocks:    123680
ARIN Region origin ASes present in the Internet Routing Table:    18993
    ARIN Prefixes per ASN:                                        13.66
ARIN Region origin ASes announcing only one prefix:                6896
ARIN Region transit ASes present in the Internet Routing Table:    1971
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:    4372
Number of ARIN addresses announced to Internet:              1295641344
    Equivalent to 77 /8s, 57 /16s and 235 /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:                    254310
    Total RIPE prefixes after maximum aggregation:               116718
    RIPE Deaggregation factor:                                     2.18
Prefixes being announced from the RIPE address blocks:           250792
    Unique aggregates announced from the RIPE address blocks:    149315
RIPE Region origin ASes present in the Internet Routing Table:    28162
    RIPE Prefixes per ASN:                                         8.91
RIPE Region origin ASes announcing only one prefix:               12103
RIPE Region transit ASes present in the Internet Routing Table:    3977
Average RIPE Region AS path length visible:                         4.3
    Max RIPE Region AS path length visible:                          32
Number of RIPE region 32-bit ASNs visible in the Routing Table:   10652
Number of RIPE addresses announced to Internet:               713886080
    Equivalent to 42 /8s, 141 /16s and 9 /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:                  114243
    Total LACNIC prefixes after maximum aggregation:              27407
    LACNIC Deaggregation factor:                                   4.17
Prefixes being announced from the LACNIC address blocks:         114932
    Unique aggregates announced from the LACNIC address blocks:   48626
LACNIC Region origin ASes present in the Internet Routing Table:  10942
    LACNIC Prefixes per ASN:                                      10.50
LACNIC Region origin ASes announcing only one prefix:              2662
LACNIC Region transit ASes present in the Internet Routing Table:  2216
Average LACNIC Region AS path length visible:                       4.9
    Max LACNIC Region AS path length visible:                        53
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8628
Number of LACNIC addresses announced to Internet:             176664064
    Equivalent to 10 /8s, 135 /16s and 174 /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:                  27501
    Total AfriNIC prefixes after maximum aggregation:              5383
    AfriNIC Deaggregation factor:                                  5.11
Prefixes being announced from the AfriNIC address blocks:         35783
    Unique aggregates announced from the AfriNIC address blocks:  11861
AfriNIC Region origin ASes present in the Internet Routing Table:  1600
    AfriNIC Prefixes per ASN:                                     22.36
AfriNIC Region origin ASes announcing only one prefix:              559
AfriNIC Region transit ASes present in the Internet Routing Table:  313
Average AfriNIC Region AS path length visible:                      5.2
    Max AfriNIC Region AS path length visible:                       34
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:  932
Number of AfriNIC addresses announced to Internet:            107772416
    Equivalent to 6 /8s, 108 /16s and 122 /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        9082       8886      46  CHINAMOBILE-CN China Mobile Communicati
  7545        5879        788     691  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4681       4192      74  ERX-CERNET-BKB China Education and Rese
  7552        3610       1330      19  VIETEL-AS-AP Viettel Group, VN
  7713        3487       1038      51  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3433       1880      57  VNPT-AS-VN VNPT Corp, VN
  4766        2544      11122     623  KIXS-AS-KR Korea Telecom, KR
  9498        2380        475     238  BBIL-AP BHARTI Airtel Ltd., IN
 45090        2170       1438      79  TENCENT-NET-AP Shenzhen Tencent Compute
  4755        2112        429     198  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        6340      10198    2695  AMAZON-02, US
 11492        4444        295     737  CABLEONE, US
 22773        3960       3029     368  ASN-CXA-ALL-CCI-22773-RDC, US
  7155        3895        263      26  VIASAT-SP-BACKBONE, US
 16625        3659       1888    2573  AKAMAI-AS, US
  6327        3389       1318      62  SHAW, CA
   749        2887      50780    2143  DNIC-AS-00749, US
 30036        2610        374     156  MEDIACOM-ENTERPRISE-BUSINESS, US
   209        2522       4962     429  CENTURYLINK-US-LEGACY-QWEST, US
 20115        2261       3042     499  CHARTER-20115, US

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

RIPE Region per AS prefix count summary
---------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 12479        6804       1729     149  UNI2-AS, ES
  9121        6757       1692      17  TTNET, TR
  8551        4014        378      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 20940        3908       3348     213  AKAMAI-ASN1, NL
 39891        3274        188      25  ALJAWWALSTC-AS, SA
 12389        2962       2290     910  ROSTELECOM-AS, RU
  9009        2465        249    1284  M247, GB
 34984        2234        358     606  TELLCOM-AS, TR
 47331        1963        316    1496  TTNET, TR
 58224        1782        929     579  TCI, IR

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       10353       3415     566  Uninet S.A. de C.V., MX
 10620        3472        520     695  Telmex Colombia S.A., CO
 11830        2459        369      62  Instituto Costarricense de Electricidad
 13999        1688        288     471  Mega Cable, S.A. de C.V., MX
  6503        1440        354     523  Axtel, S.A.B. de C.V., MX
 28573        1399       2332     247  CLARO S.A., BR
  3816        1252        662     144  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
 26615        1149       2350     139  TIM SA, BR
  6147        1089        369      21  Telefonica del Peru S.A.A., PE
 11664        1004        191     447  Techtel LMDS Comunicaciones Interactiva

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        1592        393      21  LINKdotNET-AS, EG
 24835        1545        523      32  RAYA-AS, EG
 36992        1301       1518     262  ETISALAT-MISR, EG
 36903        1199        545     114  MT-MPLS, MA
 29571         903         64      62  ORANGE-COTE-IVOIRE, CI
 36935         730        521      39  Vodafone-, EG
  6713         612       1863      34  IAM-AS, MA
 15399         518         51      34  WANANCHI-, KE
 37342         469         32       1  MOVITEL, MZ
 23889         422        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       10353       3415     566  Uninet S.A. de C.V., MX
  9808        9082       8886      46  CHINAMOBILE-CN China Mobile Communicati
 12479        6804       1729     149  UNI2-AS, ES
  9121        6757       1692      17  TTNET, TR
 16509        6340      10198    2695  AMAZON-02, US
  7545        5879        788     691  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4681       4192      74  ERX-CERNET-BKB China Education and Rese
 11492        4444        295     737  CABLEONE, US
  8551        4014        378      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 22773        3960       3029     368  ASN-CXA-ALL-CCI-22773-RDC, US

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

Global Per AS Maximum Aggregation summary
-----------------------------------------

   ASN  No of nets  Net Savings  Description
  9808        9082         9036  CHINAMOBILE-CN China Mobile Communications Grou
  9121        6757         6740  TTNET, TR
 12479        6804         6655  UNI2-AS, ES
  7545        5879         5188  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4681         4607  ERX-CERNET-BKB China Education and Research Net
  8551        4014         3975  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  7155        3895         3869  VIASAT-SP-BACKBONE, US
 11492        4444         3707  CABLEONE, US
 20940        3908         3695  AKAMAI-ASN1, NL
 16509        6340         3645  AMAZON-02, 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
     46990  UNALLOCATED  8.5.242.0/23              3356  LEVEL3, 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
    395438  UNALLOCATED  8.42.206.0/24             3356  LEVEL3, US
    395056  UNALLOCATED  8.45.133.0/24             3356  LEVEL3, US
     32306  UNALLOCATED  8.46.80.0/24             33652  CMCS, US
     17033  UNALLOCATED  8.48.225.0/24             3356  LEVEL3, US

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

Prefixes from the Special Purpose Address Registry (Global)
-----------------------------------------------------------

Prefix                Origin AS  Description
192.88.99.0/24             6939  HURRICANE, US

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

Advertised Unallocated Addresses
--------------------------------

Unassigned Network     ASN Information  AS Name
23.141.0.0/24        Origin:    395350  UNASSIGNED
23.141.0.0/24       Transit:     11426  TWC-11426-CAROLINAS, US
23.252.160.0/24      Origin:    398968  GROUP-IID-01, US
23.252.160.0/24     Transit:       174  COGENT-174, US
23.252.161.0/24      Origin:    398968  GROUP-IID-01, US
23.252.161.0/24     Transit:       174  COGENT-174, US
23.252.163.0/24      Origin:    398968  GROUP-IID-01, US
23.252.163.0/24     Transit:       174  COGENT-174, US
23.252.164.0/24      Origin:    398968  GROUP-IID-01, US
23.252.164.0/24     Transit:       174  COGENT-174, US

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      /11:102     /12:305     
/13:591     /14:1206    /15:2029    /16:13580   /17:8351    /18:13885   
/19:25147   /20:43168   /21:52394   /22:108459  /23:95426   /24:524098  
/25:796     /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        5915        6757  TTNET, TR
 12479        5775        6804  UNI2-AS, ES
  8151        4019       10353  Uninet S.A. de C.V., MX
  8551        3479        4014  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 11492        3358        4444  CABLEONE, US
  6327        3201        3389  SHAW, CA
  7155        2988        3895  VIASAT-SP-BACKBONE, US
 22773        2951        3960  ASN-CXA-ALL-CCI-22773-RDC, US
 39891        2810        3274  ALJAWWALSTC-AS, SA
 30036        2266        2610  MEDIACOM-ENTERPRISE-BUSINESS, US

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

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

   1:1724      2:991       3:151       4:7         5:3775      6:103    
   7:5         8:1561      9:1        11:172      12:1719     13:416    
  14:2388     15:168      16:42       17:374      18:141      20:166    
  21:4        22:188      23:5497     24:2310     25:6        27:2609   
  29:19       31:2427     32:96       34:1        35:62       36:1747   
  37:3949     38:2595     39:691      40:150      41:3901     42:837    
  43:2101     44:295      45:16024    46:3902     47:337      49:1677   
  50:1914     51:107      52:1364     53:1        54:294      55:771    
  56:8        57:58       58:1773     59:1193     60:966      61:2273   
  62:2450     63:1940     64:5506     65:2302     66:4878     67:2943   
  68:1186     69:4142     70:1346     71:670      72:3079     74:2614   
  75:1517     76:721      77:2127     78:3856     79:3103     80:1966   
  81:1668     82:1461     83:1207     84:1336     85:3636     86:726    
  87:1945     88:2647     89:3239     90:509      91:7548     92:1886   
  93:2592     94:3284     95:4491     96:1310     97:345      98:990    
  99:861     100:75      101:1036    102:1961    103:28323   104:4230   
 105:463     106:857     107:2486    108:783     109:4202    110:2065   
 111:3279    112:1990    113:1506    114:1508    115:1955    116:1902   
 117:2507    118:2255    119:1858    120:1664    121:1059    122:2559   
 123:2115    124:1614    125:2107    128:1295    129:1182    130:919    
 131:2084    132:760     133:372     134:1930    135:289     136:866    
 137:865     138:2440    139:1223    140:889     141:1368    142:1267   
 143:1459    144:1225    145:344     146:1788    147:1471    148:2208   
 149:1699    150:859     151:1079    152:1834    153:454     154:3543   
 155:1423    156:1877    157:1231    158:1023    159:2057    160:2410   
 161:1297    162:3455    163:1221    164:1666    165:1577    166:657    
 167:1713    168:3712    169:681     170:4410    171:825     172:3032   
 173:3064    174:1020    175:1128    176:3503    177:4585    178:3104   
 179:1966    180:2276    181:2932    182:3305    183:1929    184:2389   
 185:19303   186:4302    187:3580    188:3846    189:3055    190:8846   
 191:1313    192:11060   193:8534    194:6930    195:4981    196:2904   
 197:2346    198:6017    199:5995    200:7522    201:5661    202:10438  
 203:9985    204:4560    205:3370    206:3806    207:3378    208:4010   
 209:4643    210:4246    211:2453    212:3950    213:3383    214:1161   
 215:64      216:6399    217:2635    218:1242    219:598     220:1948   
 221:988     222:859     223:2170   

End of report


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