[SANOG] Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Sep 3 18:02:54 UTC 2021


This is an automated weekly mailing describing the state of the Internet
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 http://thyme.rand.apnic.net.

If you have any comments please contact Philip Smith <pfsinoz at gmail.com>.

Routing Table Report   04:00 +10GMT Sat 04 Sep, 2021

Report Website:     http://thyme.rand.apnic.net
Detailed Analysis:  http://thyme.rand.apnic.net/current/

Analysis Summary
----------------

BGP routing table entries examined:                              861383
    Prefixes after maximum aggregation (per Origin AS):          325835
    Deaggregation factor:                                          2.64
    Unique aggregates announced (without unneeded subnets):      413595
Total ASes present in the Internet Routing Table:                 71886
    Prefixes per ASN:                                             11.98
Origin-only ASes present in the Internet Routing Table:           61764
Origin ASes announcing only one prefix:                           25516
Transit ASes present in the Internet Routing Table:               10122
Transit-only ASes present in the Internet Routing Table:            327
Average AS path length visible in the Internet Routing Table:       4.3
    Max AS path length visible:                                      37
    Max AS path prepend of ASN (141827)                              33
Prefixes from unregistered ASNs in the Routing Table:              1198
    Number of instances of unregistered ASNs:                      1203
Number of 32-bit ASNs allocated by the RIRs:                      37120
Number of 32-bit ASNs visible in the Routing Table:               30836
Prefixes from 32-bit ASNs in the Routing Table:                  143295
Number of bogon 32-bit ASNs visible in the Routing Table:            26
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            474
Number of addresses announced to Internet:                   3037773184
    Equivalent to 181 /8s, 16 /16s and 189 /24s
    Percentage of available address space announced:               82.1
    Percentage of allocated address space announced:               82.1
    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:      285963

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

Prefixes being announced by APNIC Region ASes:                   231406
    Total APNIC prefixes after maximum aggregation:               66017
    APNIC Deaggregation factor:                                    3.51
Prefixes being announced from the APNIC address blocks:          226886
    Unique aggregates announced from the APNIC address blocks:    90889
APNIC Region origin ASes present in the Internet Routing Table:   11911
    APNIC Prefixes per ASN:                                       19.05
APNIC Region origin ASes announcing only one prefix:               3384
APNIC Region transit ASes present in the Internet Routing Table:   1680
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         37
Number of APNIC region 32-bit ASNs visible in the Routing Table:   7061
Number of APNIC addresses announced to Internet:              772799232
    Equivalent to 46 /8s, 15 /16s and 251 /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, 131072-147769
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:                    251706
    Total ARIN prefixes after maximum aggregation:               115063
    ARIN Deaggregation factor:                                     2.19
Prefixes being announced from the ARIN address blocks:           251565
    Unique aggregates announced from the ARIN address blocks:    119692
ARIN Region origin ASes present in the Internet Routing Table:    18899
    ARIN Prefixes per ASN:                                        13.31
ARIN Region origin ASes announcing only one prefix:                6880
ARIN Region transit ASes present in the Internet Routing Table:    1950
Average ARIN Region AS path length visible:                         3.9
    Max ARIN Region AS path length visible:                          28
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4095
Number of ARIN addresses announced to Internet:              1268289792
    Equivalent to 75 /8s, 152 /16s and 145 /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:                    239210
    Total RIPE prefixes after maximum aggregation:               112205
    RIPE Deaggregation factor:                                     2.13
Prefixes being announced from the RIPE address blocks:           235630
    Unique aggregates announced from the RIPE address blocks:    144588
RIPE Region origin ASes present in the Internet Routing Table:    28029
    RIPE Prefixes per ASN:                                         8.41
RIPE Region origin ASes announcing only one prefix:               12060
RIPE Region transit ASes present in the Internet Routing Table:    3908
Average RIPE Region AS path length visible:                         4.3
    Max RIPE Region AS path length visible:                          29
Number of RIPE region 32-bit ASNs visible in the Routing Table:   10374
Number of RIPE addresses announced to Internet:               711223424
    Equivalent to 42 /8s, 100 /16s and 104 /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:                  111737
    Total LACNIC prefixes after maximum aggregation:              26602
    LACNIC Deaggregation factor:                                   4.20
Prefixes being announced from the LACNIC address blocks:         112763
    Unique aggregates announced from the LACNIC address blocks:   47115
LACNIC Region origin ASes present in the Internet Routing Table:  10789
    LACNIC Prefixes per ASN:                                      10.45
LACNIC Region origin ASes announcing only one prefix:              2661
LACNIC Region transit ASes present in the Internet Routing Table:  2103
Average LACNIC Region AS path length visible:                       4.9
    Max LACNIC Region AS path length visible:                        29
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8445
Number of LACNIC addresses announced to Internet:             176555776
    Equivalent to 10 /8s, 134 /16s and 7 /24s
LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       61440-61951, 64099-64197, 262144-272796 + 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:                  26125
    Total AfriNIC prefixes after maximum aggregation:              5173
    AfriNIC Deaggregation factor:                                  5.05
Prefixes being announced from the AfriNIC address blocks:         34065
    Unique aggregates announced from the AfriNIC address blocks:  10894
AfriNIC Region origin ASes present in the Internet Routing Table:  1527
    AfriNIC Prefixes per ASN:                                     22.31
AfriNIC Region origin ASes announcing only one prefix:              531
AfriNIC Region transit ASes present in the Internet Routing Table:  310
Average AfriNIC Region AS path length visible:                      5.1
    Max AfriNIC Region AS path length visible:                       25
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:  861
Number of AfriNIC addresses announced to Internet:            108567040
    Equivalent to 6 /8s, 120 /16s and 154 /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        7950       9000      57  CMNET-GD Guangdong Mobile Communication
  7545        5813        785     675  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4711       4192      74  ERX-CERNET-BKB China Education and Rese
  7552        3610       1330      20  VIETEL-AS-AP Viettel Group, VN
  7713        3537       1023      56  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        2805       1897      56  VNPT-AS-VN VNPT Corp, VN
  4766        2500      11119     583  KIXS-AS-KR Korea Telecom, KR
  9498        2360        502     238  BBIL-AP BHARTI Airtel Ltd., IN
 45090        2129       1198      75  CNNIC-TENCENT-NET-AP Shenzhen Tencent C
  4755        2117        437     195  TATACOMM-AS TATA Communications formerl

Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-APNIC

ARIN Region per AS prefix count summary
---------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 16509        5554       9711    2460  AMAZON-02, US
 11492        4648        307     724  CABLEONE, US
 22773        3999       3033     281  ASN-CXA-ALL-CCI-22773-RDC, US
  7155        3968        264      32  VIASAT-SP-BACKBONE, US
 16625        3591       1854    2489  AKAMAI-AS, US
  6327        3365       1313      63  SHAW, CA
 30036        2582        374     185  MEDIACOM-ENTERPRISE-BUSINESS, US
   209        2504       5028     447  CENTURYLINK-US-LEGACY-QWEST, US
  5972        2296        488     811  DNIC-ASBLK-05800-06055, US
 20115        2244       3032     506  CHARTER-20115, US

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
 12479        6804       1726     143  UNI2-AS, ES
 20940        3782       3348     216  AKAMAI-ASN1, NL
 39891        3269        187      23  ALJAWWALSTC-AS, SA
  8551        2965        378      39  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2904       2278     894  ROSTELECOM-AS, RU
  9009        2505        262    1341  M247, GB
 34984        2217        356     593  TELLCOM-AS, TR
 61317        1755        264     970  ASDETUK www.heficed.com, GB
 58224        1632        889     567  TCI, IR
 13188        1610        100      27  TRIOLAN, UA

Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-RIPE

LACNIC Region per AS prefix count summary
-----------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  8151        8821       3462     578  Uninet S.A. de C.V., MX
 10620        3409        523     675  Telmex Colombia S.A., CO
 11830        2500        369      62  Instituto Costarricense de Electricidad
 13999        1816        415     476  Mega Cable, S.A. de C.V., MX
  6503        1513        359     477  Axtel, S.A.B. de C.V., MX
 28573        1453       2300     230  CLARO S.A., BR
  3816        1240        652     152  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
 26615        1103       2351     134  TIM SA, BR
  6147        1085        369      22  Telefonica del Peru S.A.A., PE
 11664         978        187     435  Techtel LMDS Comunicaciones Interactiva

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

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

   ASN  No of nets  /20 equiv  MaxAgg  Description
 24863        1632        393      20  LINKdotNET-AS, EG
 24835        1463        499      33  RAYA-AS, EG
 36992        1309       1489     267  ETISALAT-MISR, EG
 36903        1183        537     110  MT-MPLS, MA
 29571         780         68      11  ORANGE-COTE-IVOIRE, CI
  6713         613       1863      34  IAM-AS, MA
 36935         579        522      40  Vodafone-, EG
 15399         499         49      28  WANANCHI-, KE
 37342         469         32       1  MOVITEL, MZ
  2018         337        319      74  TENET-1, ZA

Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-AFRINIC

Global Per AS prefix count summary
----------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  8151        8821       3462     578  Uninet S.A. de C.V., MX
  9808        7950       9000      57  CMNET-GD Guangdong Mobile Communication
 12479        6804       1726     143  UNI2-AS, ES
  7545        5813        785     675  TPG-INTERNET-AP TPG Telecom Limited, AU
 16509        5554       9711    2460  AMAZON-02, US
  4538        4711       4192      74  ERX-CERNET-BKB China Education and Rese
 11492        4648        307     724  CABLEONE, US
 22773        3999       3033     281  ASN-CXA-ALL-CCI-22773-RDC, US
  7155        3968        264      32  VIASAT-SP-BACKBONE, US
 20940        3782       3348     216  AKAMAI-ASN1, NL

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

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

   ASN  No of nets  Net Savings  Description
  9808        7950         7893  CMNET-GD Guangdong Mobile Communication Co.Ltd.
 12479        6804         6661  UNI2-AS, ES
  7545        5813         5138  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4711         4637  ERX-CERNET-BKB China Education and Research Net
  7155        3968         3936  VIASAT-SP-BACKBONE, US
 11492        4648         3924  CABLEONE, US
 22773        3999         3718  ASN-CXA-ALL-CCI-22773-RDC, US
  7552        3610         3590  VIETEL-AS-AP Viettel Group, VN
 20940        3782         3566  AKAMAI-ASN1, NL
  7713        3537         3481  TELKOMNET-AS-AP PT Telekomunikasi Indonesia, ID

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

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

    Bad AS  Designation  Net Originated      Transit AS  Transit AS Name
     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              174  COGENT-174, US
     54338  UNALLOCATED  8.33.241.0/24             6461  ZAYO-6461, US
     23061  UNALLOCATED  8.39.119.0/24             3356  LEVEL3, US
      1782  UNALLOCATED  8.42.19.0/24             46887  LIGHTOWER, US
    395438  UNALLOCATED  8.42.206.0/24             3356  LEVEL3, US
     40544  UNALLOCATED  12.0.33.0/24              6461  ZAYO-6461, US
     15132  UNALLOCATED  12.9.150.0/24             1239  SPRINTLINK, US

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

Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------

Prefix                Origin AS  Description
192.88.99.0/24             6939  HURRICANE, US

Complete listing at http://thyme.rand.apnic.net/current/data-dsua

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
23.177.96.0/24       Origin:    397300  UNASSIGNED
23.177.96.0/24      Transit:     33387  NOCIX, 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 
27.126.156.0/22      Origin:     55827  UNASSIGNED
27.126.156.0/22     Transit:      9930  TTNET-MY TIME dotCom Berhad No. 14, Jala
27.126.156.0/23      Origin:     55827  UNASSIGNED
27.126.156.0/23     Transit:      9930  TTNET-MY TIME dotCom Berhad No. 14, Jala

Complete listing at http://thyme.rand.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     
/13:589     /14:1195    /15:2004    /16:13393   /17:8239    /18:13977   
/19:25389   /20:42424   /21:50785   /22:107074  /23:91999   /24:502299  
/25:1542    /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        5738        6804  UNI2-AS, ES
 11492        3613        4648  CABLEONE, US
  6327        3176        3365  SHAW, CA
  8151        3175        8821  Uninet S.A. de C.V., MX
  7155        3056        3968  VIASAT-SP-BACKBONE, US
 22773        2986        3999  ASN-CXA-ALL-CCI-22773-RDC, US
 39891        2805        3269  ALJAWWALSTC-AS, SA
  8551        2431        2965  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 30036        2235        2582  MEDIACOM-ENTERPRISE-BUSINESS, US
 11830        1933        2500  Instituto Costarricense de Electricidad y Telec

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

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

   1:1908      2:1102      3:143       4:20        5:3596      6:84     
   7:5         8:1533      9:1        11:164      12:1742     13:389    
  14:2290     15:103      16:23       17:350      18:110      20:124    
  21:4        22:188      23:5040     24:2447     25:2        27:2513   
  29:19       31:2359     32:113      34:1        35:47       36:1732   
  37:3792     38:2204     39:640      40:165      41:3831     42:970    
  43:2076     44:286      45:15421    46:3679     47:349      48:7      
  49:1624     50:1820     51:100      52:1288     54:249      55:741    
  56:4        57:53       58:1727     59:1198     60:933      61:2295   
  62:2309     63:1959     64:5358     65:2361     66:4996     67:2865   
  68:1168     69:4107     70:1366     71:677      72:3164     74:2620   
  75:1499     76:696      77:2039     78:1673     79:2283     80:1868   
  81:1543     82:1364     83:1151     84:1301     85:2755     86:716    
  87:1816     88:970      89:3017     90:515      91:7372     92:1810   
  93:2551     94:3129     95:3502     96:1305     97:345      98:978    
  99:957     100:76      101:1059    102:1626    103:26805   104:4003   
 105:431     106:817     107:2322    108:728     109:3894    110:2038   
 111:3157    112:1939    113:1426    114:1469    115:1920    116:1895   
 117:2404    118:2338    119:1883    120:1540    121:1073    122:2517   
 123:2160    124:1599    125:2068    128:1341    129:1374    130:878    
 131:2014    132:775     133:362     134:1796    135:305     136:782    
 137:846     138:2390    139:1188    140:753     141:1211    142:1211   
 143:1333    144:1261    145:323     146:1496    147:1398    148:2166   
 149:1496    150:819     151:1080    152:1650    153:427     154:2993   
 155:1321    156:1756    157:1224    158:976     159:2015    160:2362   
 161:1237    162:3383    163:1095    164:1557    165:1424    166:597    
 167:1782    168:3645    169:696     170:4385    171:805     172:2741   
 173:2873    174:1007    175:1105    176:3223    177:4444    178:2974   
 179:1856    180:2261    181:2651    182:3218    183:2023    184:2414   
 185:18723   186:4265    187:3179    188:3315    189:2913    190:8671   
 191:1368    192:10703   193:8324    194:6747    195:4833    196:2907   
 197:2120    198:6015    199:5994    200:7358    201:5245    202:10577  
 203:10058   204:4588    205:3376    206:3767    207:3344    208:4022   
 209:4702    210:4183    211:2358    212:3750    213:3438    214:1158   
 215:64      216:6337    217:2581    218:1218    219:680     220:1953   
 221:964     222:857     223:2030   

End of report


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