Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Nov 13 12:34:33 CST 2009


This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.
Daily listings are sent to bgp-stats at lists.apnic.net

For historical data, please see http://thyme.apnic.net.

If you have any comments please contact Philip Smith <pfs at cisco.com>.

Routing Table Report   04:00 +10GMT Sat 14 Nov, 2009

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

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

BGP routing table entries examined:                              302501
    Prefixes after maximum aggregation:                          141653
    Deaggregation factor:                                          2.14
    Unique aggregates announced to Internet:                     149678
Total ASes present in the Internet Routing Table:                 32670
    Prefixes per ASN:                                              9.26
Origin-only ASes present in the Internet Routing Table:           28386
Origin ASes announcing only one prefix:                           13852
Transit ASes present in the Internet Routing Table:                4284
Transit-only ASes present in the Internet Routing Table:             99
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      39
    Max AS path prepend of ASN (22394)                               36
Prefixes from unregistered ASNs in the Routing Table:               635
    Unregistered ASNs in the Routing Table:                         131
Number of 32-bit ASNs allocated by the RIRs:                        317
Prefixes from 32-bit ASNs in the Routing Table:                     263
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            177
Number of addresses announced to Internet:                   2116745984
    Equivalent to 126 /8s, 42 /16s and 251 /24s
    Percentage of available address space announced:               57.1
    Percentage of allocated address space announced:               64.7
    Percentage of available address space allocated:               88.2
    Percentage of address space in use by end-sites:               80.0
Total number of prefixes smaller than registry allocations:      145338

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

Prefixes being announced by APNIC Region ASes:                    72284
    Total APNIC prefixes after maximum aggregation:               25310
    APNIC Deaggregation factor:                                    2.86
Prefixes being announced from the APNIC address blocks:           68830
    Unique aggregates announced from the APNIC address blocks:    30438
APNIC Region origin ASes present in the Internet Routing Table:    3858
    APNIC Prefixes per ASN:                                       17.84
APNIC Region origin ASes announcing only one prefix:               1046
APNIC Region transit ASes present in the Internet Routing Table:    597
Average APNIC Region AS path length visible:                        3.6
    Max APNIC Region AS path length visible:                         23
Number of APNIC addresses announced to Internet:              470486048
    Equivalent to 28 /8s, 11 /16s and 12 /24s
    Percentage of available APNIC address space announced:         80.1

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079
                       55296-56319, 131072-132095
APNIC Address Blocks    43/8,  58/8,  59/8,  60/8,  61/8, 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, 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,
                      

ARIN Region Analysis Summary
----------------------------

Prefixes being announced by ARIN Region ASes:                    127674
    Total ARIN prefixes after maximum aggregation:                67188
    ARIN Deaggregation factor:                                     1.90
Prefixes being announced from the ARIN address blocks:           102073
    Unique aggregates announced from the ARIN address blocks:     38770
ARIN Region origin ASes present in the Internet Routing Table:    13337
    ARIN Prefixes per ASN:                                         7.65
ARIN Region origin ASes announcing only one prefix:                5169
ARIN Region transit ASes present in the Internet Routing Table:    1313
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          39
Number of ARIN addresses announced to Internet:               714745632
    Equivalent to 42 /8s, 154 /16s and 39 /24s
    Percentage of available ARIN address space announced:          62.7

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, 393216-394239
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,  24/8,  26/8,  28/8,  29/8,
                        30/8,  32/8,  33/8,  34/8,  35/8,  38/8,  40/8,
                        44/8,  45/8,  47/8,  48/8,  52/8,  54/8,  55/8,
                        56/8,  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, 108/8, 173/8,
                       174/8, 184/8, 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:                     69750
    Total RIPE prefixes after maximum aggregation:                40882
    RIPE Deaggregation factor:                                     1.71
Prefixes being announced from the RIPE address blocks:            63032
    Unique aggregates announced from the RIPE address blocks:     42158
RIPE Region origin ASes present in the Internet Routing Table:    13751
    RIPE Prefixes per ASN:                                         4.58
RIPE Region origin ASes announcing only one prefix:                7150
RIPE Region transit ASes present in the Internet Routing Table:    2064
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          20
Number of RIPE addresses announced to Internet:               404254144
    Equivalent to 24 /8s, 24 /16s and 109 /24s
    Percentage of available RIPE address space announced:          75.3

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, 196608-197631
RIPE Address Blocks      2/8,  25/8,  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, 178/8, 193/8, 194/8,
                       195/8, 212/8, 213/8, 217/8,

LACNIC Region Analysis Summary
------------------------------

Prefixes being announced by LACNIC Region ASes:                   26248
    Total LACNIC prefixes after maximum aggregation:               6386
    LACNIC Deaggregation factor:                                   4.11
Prefixes being announced from the LACNIC address blocks:          24557
    Unique aggregates announced from the LACNIC address blocks:   13594
LACNIC Region origin ASes present in the Internet Routing Table:   1205
    LACNIC Prefixes per ASN:                                      20.38
LACNIC Region origin ASes announcing only one prefix:               387
LACNIC Region transit ASes present in the Internet Routing Table:   200
Average LACNIC Region AS path length visible:                       4.1
    Max LACNIC Region AS path length visible:                        30
Number of LACNIC addresses announced to Internet:              68200192
    Equivalent to 4 /8s, 16 /16s and 167 /24s
    Percentage of available LACNIC address space announced:        67.8

LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       262144-263167 plus ERX transfers
LACNIC Address Blocks  186/8, 187/8, 189/8, 190/8, 200/8, 201/8,

AfriNIC Region Analysis Summary
-------------------------------

Prefixes being announced by AfriNIC Region ASes:                   6052
    Total AfriNIC prefixes after maximum aggregation:              1588
    AfriNIC Deaggregation factor:                                  3.81
Prefixes being announced from the AfriNIC address blocks:          4414
    Unique aggregates announced from the AfriNIC address blocks:   1583
AfriNIC Region origin ASes present in the Internet Routing Table:   333
    AfriNIC Prefixes per ASN:                                     13.26
AfriNIC Region origin ASes announcing only one prefix:              100
AfriNIC Region transit ASes present in the Internet Routing Table:   69
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       15
Number of AfriNIC addresses announced to Internet:             13027584
    Equivalent to 0 /8s, 198 /16s and 201 /24s
    Percentage of available AfriNIC address space announced:       38.8

AfriNIC AS Blocks      36864-37887, 327680-328703 & ERX transfers
AfriNIC Address Blocks  41/8, 197/8,

APNIC Region per AS prefix count summary
----------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 4766     1770       7505         456   Korea Telecom (KIX)
17488     1477        142         125   Hathway IP Over Cable Interne
 4755     1277        292         148   TATA Communications formerly 
 9583     1045         81         515   Sify Limited
 4134     1007      19185         393   CHINANET-BACKBONE
18101      982        204          33   Reliance Infocom Ltd Internet
 7545      900        199         100   TPG Internet Pty Ltd
 9829      853        665          21   BSNL National Internet Backbo
17974      836        252         103   PT TELEKOMUNIKASI INDONESIA
24560      797        292         172   Bharti Airtel Ltd., Telemedia

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

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6389     4257       3883         315   bellsouth.net, inc. 
 4323     3733       1054         399   Time Warner Telecom
 1785     1787        715         140   PaeTec Communications, Inc.
 7018     1586       5839        1039   AT&T WorldNet Services
20115     1515       1481         675   Charter Communications 
 6478     1312        270         415   AT&T Worldnet Services 
 2386     1307        638         943   AT&T Data Communications Serv
 3356     1218      10966         442   Level 3 Communications, LLC 
11492     1145        222          14   Cable One 
22773     1118       2600          66   Cox Communications, Inc.

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

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
30890      515         98         208   Evolva Telecom
 3292      445       1905         390   TDC Tele Danmark
35805      436         40           5   United Telecom of Georgia
  702      416       1822         335   UUNET - Commercial IP service
 9198      404        138          12   Kazakhtelecom Data Network Ad
 8866      364        110          23   Bulgarian Telecommunication C
 3320      358       7068         305   Deutsche Telekom AG
 3215      349       3144         111   France Telecom Transpac
 3301      347       1412         302   TeliaNet Sweden
 8551      316        294          40   Bezeq International

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

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8151     1569       2899         230   UniNet S.A. de C.V. 
10620     1030        228         102   TVCABLE BOGOTA 
28573      803        664          89   NET Servicos de Comunicao S.A
 7303      663        349          95   Telecom Argentina Stet-France
22047      546        302          14   VTR PUNTO NET S.A. 
11830      473        308          59   Instituto Costarricense de El
11172      444         99          70   Servicios Alestra S.A de C.V 
14117      437         29          11   Telefonica del Sur S.A. 
 7738      430        858          29   Telecomunicacoes da Bahia S.A
 6471      422         96          31   ENTEL CHILE S.A. 

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

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8452     1044        188           7   TEDATA
24863      943         98          72   LINKdotNET AS number
 3741      274        857         234   The Internet Solution 
 2018      191        188         118   Tertiary Education Network 
 6713      176        167          12   Itissalat Al-MAGHRIB
29571      128         15           8   Ci Telecom Autonomous system 
33776      124          7          11   Starcomms Nigeria Limited
 5536      122          8          13   Internet Egypt Network
 5713      116        508          67   Telkom SA Ltd 
20858      109         34           6   EgyNet

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

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6389     4257       3883         315   bellsouth.net, inc. 
 4323     3733       1054         399   Time Warner Telecom
 1785     1787        715         140   PaeTec Communications, Inc.
 4766     1770       7505         456   Korea Telecom (KIX)
 7018     1586       5839        1039   AT&T WorldNet Services
 8151     1569       2899         230   UniNet S.A. de C.V. 
20115     1515       1481         675   Charter Communications 
17488     1477        142         125   Hathway IP Over Cable Interne
 6478     1312        270         415   AT&T Worldnet Services 
 2386     1307        638         943   AT&T Data Communications Serv

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

Global Per AS Maximum Aggr summary
----------------------------------

  ASN   No of nets  Net Savings Description
 4323      3733        3334      Time Warner Telecom
 1785      1787        1647      PaeTec Communications, Inc.
17488      1477        1352      Hathway IP Over Cable Interne
 8151      1569        1339      UniNet S.A. de C.V. 
 4766      1770        1314      Korea Telecom (KIX)
11492      1145        1131      Cable One 
 4755      1277        1129      TATA Communications formerly 
22773      1118        1052      Cox Communications, Inc.
18566      1059        1049      Covad Communications 
 8452      1044        1037      TEDATA

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

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

Bad AS  Designation  Network              Transit AS  Description
16927   UNALLOCATED   12.0.252.0/23         7018       AT&T WorldNet Servic
15132   UNALLOCATED   12.9.150.0/24         7018       AT&T WorldNet Servic
32567   UNALLOCATED   12.14.170.0/24        7018       AT&T WorldNet Servic
13746   UNALLOCATED   12.24.56.0/24         7018       AT&T WorldNet Servic
32567   UNALLOCATED   12.25.107.0/24        7018       AT&T WorldNet Servic
26973   UNALLOCATED   12.39.152.0/24        7018       AT&T WorldNet Servic
26973   UNALLOCATED   12.39.154.0/23        7018       AT&T WorldNet Servic
26973   UNALLOCATED   12.39.159.0/24        7018       AT&T WorldNet Servic
32326   UNALLOCATED   12.40.49.0/24         7018       AT&T WorldNet Servic
25639   UNALLOCATED   12.41.169.0/24        7018       AT&T WorldNet Servic

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

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

Network            Origin AS  Description
2.0.0.0/16           12654     RIPE NCC RIS Project
2.1.0.0/21           12654     RIPE NCC RIS Project
2.1.24.0/24          12654     RIPE NCC RIS Project
41.223.92.0/22       36936     >>UNKNOWN<<
41.223.188.0/24      22351     Intelsat 
41.223.189.0/24      26452     Local Communications Networks
46.0.0.0/16          12654     RIPE NCC RIS Project
46.1.0.0/21          12654     RIPE NCC RIS Project
46.1.24.0/24         12654     RIPE NCC RIS Project
62.61.220.0/24       24974     Tachyon Europe BV - Wireless 

Complete listing at http://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        /8:19       /9:10      /10:25      /11:65      /12:177     
/13:361     /14:640     /15:1220    /16:10741   /17:4960    /18:8511    
/19:17574   /20:21253   /21:21202   /22:27534   /23:27360   /24:157968  
/25:944     /26:1126    /27:565     /28:219     /29:11      /30:8       
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2782          4257      bellsouth.net, inc. 
 4323     2357          3733      Time Warner Telecom
 4766     1435          1770      Korea Telecom (KIX)
17488     1254          1477      Hathway IP Over Cable Interne
 1785     1251          1787      PaeTec Communications, Inc.
11492     1068          1145      Cable One 
18566     1040          1059      Covad Communications 
 7018      947          1586      AT&T WorldNet Services
 8452      944          1044      TEDATA
10620      935          1030      TVCABLE BOGOTA 

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

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

   2:1         4:14        8:233      12:2134     13:8        15:22     
  16:3        17:5        20:36       24:1251     32:49       34:2      
  38:612      40:99       41:1795     43:1        44:2        46:1      
  47:21       52:6        55:2        56:2        57:23       58:628    
  59:610      60:443      61:992      62:948      63:1994     64:3656   
  65:2363     66:4091     67:1755     68:995      69:2795     70:588    
  71:156      72:1748     73:2        74:1989     75:183      76:352    
  77:842      78:569      79:376      80:940      81:814      82:472    
  83:441      84:529      85:1016     86:382      87:697      88:425    
  89:1500     90:63       91:2645     92:424      93:1158     94:1297   
  95:825      96:200      97:273      98:412      99:31      109:160    
 110:270     111:460     112:146     113:174     114:285     115:355    
 116:1123    117:596     118:349     119:785     120:127     121:703    
 122:1304    123:777     124:1059    125:1350    128:222     129:218    
 130:133     131:425     132:75      133:16      134:186     135:43     
 136:233     137:166     138:180     139:84      140:441     141:122    
 142:387     143:343     144:365     145:49      146:395     147:171    
 148:559     149:196     150:150     151:172     152:216     153:160    
 154:2       155:274     156:167     157:313     158:95      159:360    
 160:293     161:173     162:274     163:159     164:278     165:468    
 166:490     167:390     168:750     169:160     170:554     171:43     
 172:1       173:391     174:392     178:1       180:174     184:1      
 186:157     187:190     188:1281    189:628     190:3250    192:5738   
 193:4282    194:3340    195:2730    196:1154    198:3566    199:3373   
 200:5206    201:1390    202:7901    203:8241    204:3937    205:2159   
 206:2403    207:3011    208:3975    209:3436    210:2541    211:1149   
 212:1652    213:1621    214:189     215:40      216:4416    217:1343   
 218:475     219:424     220:1140    221:452     222:304    

End of report




More information about the NANOG mailing list