[SANOG] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri May 13 18:02:49 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 14 May, 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:                              897555
    Prefixes after maximum aggregation (per Origin AS):          338291
    Deaggregation factor:                                          2.65
    Unique aggregates announced (without unneeded subnets):      432305
Total ASes present in the Internet Routing Table:                 73179
    Prefixes per ASN:                                             12.27
Origin-only ASes present in the Internet Routing Table:           62817
Origin ASes announcing only one prefix:                           25792
Transit ASes present in the Internet Routing Table:               10362
Transit-only ASes present in the Internet Routing Table:            375
Average AS path length visible in the Internet Routing Table:       4.4
    Max AS path length visible:                                      66
    Max AS path prepend of ASN (267602)                              58
Prefixes from unregistered ASNs in the Routing Table:               884
    Number of instances of unregistered ASNs:                       891
Number of 32-bit ASNs allocated by the RIRs:                      39367
Number of 32-bit ASNs visible in the Routing Table:               32660
Prefixes from 32-bit ASNs in the Routing Table:                  153746
Number of bogon 32-bit ASNs visible in the Routing Table:            28
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            523
Number of addresses announced to Internet:                   3069896832
    Equivalent to 182 /8s, 250 /16s and 232 /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:      304751

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

Prefixes being announced by APNIC Region ASes:                   235080
    Total APNIC prefixes after maximum aggregation:               66692
    APNIC Deaggregation factor:                                    3.52
Prefixes being announced from the APNIC address blocks:          230271
    Unique aggregates announced from the APNIC address blocks:    94848
APNIC Region origin ASes present in the Internet Routing Table:   12643
    APNIC Prefixes per ASN:                                       18.21
APNIC Region origin ASes announcing only one prefix:               3611
APNIC Region transit ASes present in the Internet Routing Table:   1742
Average APNIC Region AS path length visible:                        4.7
    Max APNIC Region AS path length visible:                         32
Number of APNIC region 32-bit ASNs visible in the Routing Table:   7839
Number of APNIC addresses announced to Internet:              776150528
    Equivalent to 46 /8s, 67 /16s and 30 /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:                    261667
    Total ARIN prefixes after maximum aggregation:               120196
    ARIN Deaggregation factor:                                     2.18
Prefixes being announced from the ARIN address blocks:           261536
    Unique aggregates announced from the ARIN address blocks:    126040
ARIN Region origin ASes present in the Internet Routing Table:    19026
    ARIN Prefixes per ASN:                                        13.75
ARIN Region origin ASes announcing only one prefix:                6905
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:                          34
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4483
Number of ARIN addresses announced to Internet:              1295698688
    Equivalent to 77 /8s, 58 /16s and 203 /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:                    257476
    Total RIPE prefixes after maximum aggregation:               117662
    RIPE Deaggregation factor:                                     2.19
Prefixes being announced from the RIPE address blocks:           254816
    Unique aggregates announced from the RIPE address blocks:    150626
RIPE Region origin ASes present in the Internet Routing Table:    28154
    RIPE Prefixes per ASN:                                         9.05
RIPE Region origin ASes announcing only one prefix:               12039
RIPE Region transit ASes present in the Internet Routing Table:    3974
Average RIPE Region AS path length visible:                         4.3
    Max RIPE Region AS path length visible:                          33
Number of RIPE region 32-bit ASNs visible in the Routing Table:   10709
Number of RIPE addresses announced to Internet:               713864832
    Equivalent to 42 /8s, 140 /16s and 182 /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:                  114700
    Total LACNIC prefixes after maximum aggregation:              27605
    LACNIC Deaggregation factor:                                   4.16
Prefixes being announced from the LACNIC address blocks:         114534
    Unique aggregates announced from the LACNIC address blocks:   48595
LACNIC Region origin ASes present in the Internet Routing Table:  10965
    LACNIC Prefixes per ASN:                                      10.45
LACNIC Region origin ASes announcing only one prefix:              2671
LACNIC Region transit ASes present in the Internet Routing Table:  2195
Average LACNIC Region AS path length visible:                       4.9
    Max LACNIC Region AS path length visible:                        66
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8664
Number of LACNIC addresses announced to Internet:             176500992
    Equivalent to 10 /8s, 133 /16s and 49 /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:                  27748
    Total AfriNIC prefixes after maximum aggregation:              5449
    AfriNIC Deaggregation factor:                                  5.09
Prefixes being announced from the AfriNIC address blocks:         35875
    Unique aggregates announced from the AfriNIC address blocks:  11748
AfriNIC Region origin ASes present in the Internet Routing Table:  1637
    AfriNIC Prefixes per ASN:                                     21.92
AfriNIC Region origin ASes announcing only one prefix:              566
AfriNIC Region transit ASes present in the Internet Routing Table:  327
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:  965
Number of AfriNIC addresses announced to Internet:            107388928
    Equivalent to 6 /8s, 102 /16s and 160 /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        9148       8884      44  CHINAMOBILE-CN China Mobile Communicati
  7545        5924        789     694  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4708       4192      75  ERX-CERNET-BKB China Education and Rese
  7552        3584       1330      19  VIETEL-AS-AP Viettel Group, VN
  7713        3489       1039      53  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3429       1880      56  VNPT-AS-VN VNPT Corp, VN
  4766        2494      11121     601  KIXS-AS-KR Korea Telecom, KR
  9498        2403        499     238  BBIL-AP BHARTI Airtel Ltd., IN
 45090        2169       1438      79  TENCENT-NET-AP Shenzhen Tencent Compute
  4755        2119        438     203  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        6403      10352    2767  AMAZON-02, US
 11492        4494        298     692  CABLEONE, US
 22773        3920       3067     354  ASN-CXA-ALL-CCI-22773-RDC, US
  7155        3901        264      31  VIASAT-SP-BACKBONE, US
 16625        3599       1833    2544  AKAMAI-AS, US
  6327        3438       1318      62  SHAW, CA
   749        2882      50780    2138  DNIC-AS-00749, US
 30036        2624        374     128  MEDIACOM-ENTERPRISE-BUSINESS, US
   209        2461       4961     422  CENTURYLINK-US-LEGACY-QWEST, US
 20115        2251       3051     492  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        6799       1730     150  UNI2-AS, ES
  9121        6725       1692      17  TTNET, TR
  8551        4009        374      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 20940        3952       3360     201  AKAMAI-ASN1, NL
 39891        3751        216      30  ALJAWWALSTC-AS, SA
 12389        2949       2273     908  ROSTELECOM-AS, RU
  6849        2907        355      21  UKRTELNET, UA
  9009        2482        248    1288  M247, GB
 34984        2238        357     631  TELLCOM-AS, TR
 47331        2086        328    1598  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       10598       3397     561  Uninet S.A. de C.V., MX
 10620        3477        519     738  Telmex Colombia S.A., CO
 11830        2433        369      63  Instituto Costarricense de Electricidad
 13999        1799        299     470  Mega Cable, S.A. de C.V., MX
  6503        1454        355     527  Axtel, S.A.B. de C.V., MX
 28573        1402       2333     253  CLARO S.A., BR
  3816        1257        671     148  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6147        1079        369      21  Telefonica del Peru S.A.A., PE
 11664        1017        191     441  Techtel LMDS Comunicaciones Interactiva
 11172         957        133      61  Alestra, S. de R.L. de C.V., MX

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        1653        393      21  LINKdotNET-AS, EG
 24835        1442        501      30  RAYA-AS, EG
 36992        1313       1519     263  ETISALAT-MISR, EG
 36903        1199        545     114  MT-MPLS, MA
 29571         947         65      59  ORANGE-COTE-IVOIRE, CI
 36935         619        520      42  Vodafone-, EG
  6713         611       1863      34  IAM-AS, MA
 15399         512         51      33  WANANCHI-, KE
 37342         467         32       1  MOVITEL, MZ
 23889         423        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       10598       3397     561  Uninet S.A. de C.V., MX
  9808        9148       8884      44  CHINAMOBILE-CN China Mobile Communicati
 12479        6799       1730     150  UNI2-AS, ES
  9121        6725       1692      17  TTNET, TR
 16509        6403      10352    2767  AMAZON-02, US
  7545        5924        789     694  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4708       4192      75  ERX-CERNET-BKB China Education and Rese
 11492        4494        298     692  CABLEONE, US
  8551        4009        374      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 20940        3952       3360     201  AKAMAI-ASN1, NL

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

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

   ASN  No of nets  Net Savings  Description
  9808        9148         9104  CHINAMOBILE-CN China Mobile Communications Grou
  9121        6725         6708  TTNET, TR
 12479        6799         6649  UNI2-AS, ES
  7545        5924         5230  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4708         4633  ERX-CERNET-BKB China Education and Research Net
  8551        4009         3970  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  7155        3901         3870  VIASAT-SP-BACKBONE, US
 11492        4494         3802  CABLEONE, US
 20940        3952         3751  AKAMAI-ASN1, NL
 39891        3751         3721  ALJAWWALSTC-AS, SA

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
     65454  PRIVATE      1.9.206.0/24              4788  TMNET-AS-AP TM Net, Internet
     33123  UNALLOCATED  8.10.69.0/24             11168  SCC, US
     62828  UNALLOCATED  8.21.130.0/24             3356  LEVEL3, US
    393266  UNALLOCATED  8.23.52.0/24             46887  LIGHTOWER, US
     18604  UNALLOCATED  8.25.204.0/24             3356  LEVEL3, US
    394936  UNALLOCATED  8.33.224.0/24            22442  HOU-PHONOSCOPE, US
     54338  UNALLOCATED  8.33.241.0/24             6461  ZAYO-6461, US
    395438  UNALLOCATED  8.42.206.0/24             3356  LEVEL3, US
    395056  UNALLOCATED  8.45.133.0/24             3356  LEVEL3, 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
23.129.40.0/24       Origin:      6461  ZAYO-6461, US
23.129.40.0/24      Transit:      2516  KDDI KDDI CORPORATION, JP
23.129.56.0/24       Origin:      6461  ZAYO-6461, US
23.129.56.0/24      Transit:      2516  KDDI KDDI CORPORATION, JP
23.129.136.0/24      Origin:      6461  ZAYO-6461, US
23.129.136.0/24     Transit:      2516  KDDI KDDI CORPORATION, JP
23.131.8.0/24        Origin:      3257  GTT-BACKBONE GTT, US
23.131.8.0/24       Transit:      2516  KDDI KDDI CORPORATION, JP
23.131.88.0/24       Origin:      3257  GTT-BACKBONE GTT, US
23.131.88.0/24      Transit:      2516  KDDI KDDI CORPORATION, JP

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

Number of prefixes announced per prefix length (Global)
-------------------------------------------------------

 /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
 /7:0        /8:16       /9:13      /10:41      /11:101     /12:303     
/13:591     /14:1213    /15:2063    /16:13542   /17:8311    /18:13902   
/19:25186   /20:43851   /21:52191   /22:108370  /23:96015   /24:531042  
/25:804     /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        5881        6725  TTNET, TR
 12479        5778        6799  UNI2-AS, ES
  8151        4314       10598  Uninet S.A. de C.V., MX
  8551        3475        4009  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 11492        3400        4494  CABLEONE, US
  6327        3250        3438  SHAW, CA
 39891        3067        3751  ALJAWWALSTC-AS, SA
  7155        2991        3901  VIASAT-SP-BACKBONE, US
 22773        2926        3920  ASN-CXA-ALL-CCI-22773-RDC, US
  6849        2758        2907  UKRTELNET, UA

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

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

   1:1943      2:1034      3:154       4:6         5:3786      6:104    
   7:5         8:1566      9:1        11:172      12:1712     13:298    
  14:2383     15:201      16:44       17:386      18:161      20:212    
  21:4        22:188      23:5661     24:2292     25:6        27:2597   
  29:19       31:2420     32:96       34:2        35:76       36:1759   
  37:4372     38:2817     39:694      40:153      41:3979     42:1090   
  43:2181     44:287      45:16039    46:4143     47:321      49:1698   
  50:2156     51:100      52:1426     54:367      55:659      56:8      
  57:59       58:1810     59:1208     60:961      61:2257     62:2526   
  63:1948     64:5505     65:2315     66:4865     67:2974     68:1193   
  69:4159     70:1329     71:674      72:3043     74:2651     75:1390   
  76:584      77:2174     78:3914     79:3114     80:1990     81:1732   
  82:1494     83:1209     84:1366     85:3671     86:714      87:1962   
  88:2741     89:3288     90:521      91:7621     92:2015     93:2589   
  94:3492     95:4774     96:1307     97:349      98:996      99:737    
 100:75      101:1042    102:2056    103:28998   104:4379    105:462    
 106:873     107:2509    108:832     109:4243    110:2027    111:3287   
 112:2031    113:1550    114:1485    115:1979    116:1905    117:2513   
 118:2336    119:1840    120:1695    121:1073    122:2575    123:2115   
 124:1596    125:2125    128:1234    129:1100    130:971     131:2065   
 132:767     133:372     134:1902    135:290     136:880     137:850    
 138:2429    139:1507    140:864     141:1402    142:1291    143:1446   
 144:1209    145:343     146:1812    147:1493    148:2223    149:1724   
 150:847     151:1083    152:1853    153:459     154:3452    155:1424   
 156:1838    157:1232    158:1028    159:2171    160:2515    161:1273   
 162:3465    163:1265    164:1641    165:1601    166:716     167:1700   
 168:3782    169:837     170:4484    171:831     172:3177    173:3121   
 174:1023    175:1125    176:3515    177:4636    178:3509    179:2014   
 180:2281    181:2974    182:3246    183:1955    184:2388    185:19498  
 186:4306    187:3737    188:3867    189:3242    190:8866    191:1318   
 192:11009   193:8614    194:7006    195:4980    196:2985    197:2431   
 198:6008    199:6046    200:7499    201:5721    202:10492   203:10031  
 204:4553    205:3435    206:3760    207:3387    208:4042    209:4661   
 210:4305    211:2457    212:4040    213:3432    214:1151    215:67     
 216:6443    217:2664    218:1268    219:571     220:1946    221:980    
 222:843     223:2146   

End of report


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