Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Dec 4 14:34:27 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 05 Dec, 2009

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

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

BGP routing table entries examined:                              305390
    Prefixes after maximum aggregation:                          142337
    Deaggregation factor:                                          2.15
    Unique aggregates announced to Internet:                     150539
Total ASes present in the Internet Routing Table:                 32849
    Prefixes per ASN:                                              9.30
Origin-only ASes present in the Internet Routing Table:           28510
Origin ASes announcing only one prefix:                           13915
Transit ASes present in the Internet Routing Table:                4339
Transit-only ASes present in the Internet Routing Table:            103
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:              1081
    Unregistered ASNs in the Routing Table:                         172
Number of 32-bit ASNs allocated by the RIRs:                        342
Prefixes from 32-bit ASNs in the Routing Table:                     281
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            174
Number of addresses announced to Internet:                   2139389760
    Equivalent to 127 /8s, 132 /16s and 127 /24s
    Percentage of available address space announced:               57.7
    Percentage of allocated address space announced:               65.4
    Percentage of available address space allocated:               88.2
    Percentage of address space in use by end-sites:               80.2
Total number of prefixes smaller than registry allocations:      146684

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

Prefixes being announced by APNIC Region ASes:                    72874
    Total APNIC prefixes after maximum aggregation:               25430
    APNIC Deaggregation factor:                                    2.87
Prefixes being announced from the APNIC address blocks:           69560
    Unique aggregates announced from the APNIC address blocks:    30973
APNIC Region origin ASes present in the Internet Routing Table:    3883
    APNIC Prefixes per ASN:                                       17.91
APNIC Region origin ASes announcing only one prefix:               1057
APNIC Region transit ASes present in the Internet Routing Table:    601
Average APNIC Region AS path length visible:                        3.6
    Max APNIC Region AS path length visible:                         23
Number of APNIC addresses announced to Internet:              483411744
    Equivalent to 28 /8s, 208 /16s and 71 /24s
    Percentage of available APNIC address space announced:         80.0

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, 133/8, 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:                    128363
    Total ARIN prefixes after maximum aggregation:                67377
    ARIN Deaggregation factor:                                     1.91
Prefixes being announced from the ARIN address blocks:           102877
    Unique aggregates announced from the ARIN address blocks:     38831
ARIN Region origin ASes present in the Internet Routing Table:    13385
    ARIN Prefixes per ASN:                                         7.69
ARIN Region origin ASes announcing only one prefix:                5182
ARIN Region transit ASes present in the Internet Routing Table:    1326
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          39
Number of ARIN addresses announced to Internet:               731875872
    Equivalent to 43 /8s, 159 /16s and 138 /24s
    Percentage of available ARIN address space announced:          64.2

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:                     70631
    Total RIPE prefixes after maximum aggregation:                41162
    RIPE Deaggregation factor:                                     1.72
Prefixes being announced from the RIPE address blocks:            63769
    Unique aggregates announced from the RIPE address blocks:     42546
RIPE Region origin ASes present in the Internet Routing Table:    13833
    RIPE Prefixes per ASN:                                         4.61
RIPE Region origin ASes announcing only one prefix:                7185
RIPE Region transit ASes present in the Internet Routing Table:    2094
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          20
Number of RIPE addresses announced to Internet:               405643136
    Equivalent to 24 /8s, 45 /16s and 159 /24s
    Percentage of available RIPE address space announced:          75.6

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:                   26702
    Total LACNIC prefixes after maximum aggregation:               6480
    LACNIC Deaggregation factor:                                   4.12
Prefixes being announced from the LACNIC address blocks:          25010
    Unique aggregates announced from the LACNIC address blocks:   13646
LACNIC Region origin ASes present in the Internet Routing Table:   1219
    LACNIC Prefixes per ASN:                                      20.52
LACNIC Region origin ASes announcing only one prefix:               397
LACNIC Region transit ASes present in the Internet Routing Table:   203
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        17
Number of LACNIC addresses announced to Internet:              68833280
    Equivalent to 4 /8s, 26 /16s and 80 /24s
    Percentage of available LACNIC address space announced:        68.4

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:                   5972
    Total AfriNIC prefixes after maximum aggregation:              1567
    AfriNIC Deaggregation factor:                                  3.81
Prefixes being announced from the AfriNIC address blocks:          4371
    Unique aggregates announced from the AfriNIC address blocks:   1513
AfriNIC Region origin ASes present in the Internet Routing Table:   336
    AfriNIC Prefixes per ASN:                                     13.01
AfriNIC Region origin ASes announcing only one prefix:               94
AfriNIC Region transit ASes present in the Internet Routing Table:   70
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       16
Number of AfriNIC addresses announced to Internet:             13172992
    Equivalent to 0 /8s, 201 /16s and 1 /24s
    Percentage of available AfriNIC address space announced:       39.3

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     1750       7507         461   Korea Telecom (KIX)
17488     1458        143         132   Hathway IP Over Cable Interne
 4755     1280        296         148   TATA Communications formerly 
 9583     1044         79         514   Sify Limited
 4134     1015      19459         395   CHINANET-BACKBONE
18101      984        204          34   Reliance Infocom Ltd Internet
 7545      918        198          97   TPG Internet Pty Ltd
17974      864        270          57   PT TELEKOMUNIKASI INDONESIA
 9829      850        673          24   BSNL National Internet Backbo
24560      806        293         176   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     4235       3879         311   bellsouth.net, inc. 
 4323     3756       1068         399   Time Warner Telecom
 1785     1779        715         136   PaeTec Communications, Inc.
 7018     1590       5809        1032   AT&T WorldNet Services
20115     1526       1484         667   Charter Communications 
 2386     1292        632         933   AT&T Data Communications Serv
 3356     1219      10966         439   Level 3 Communications, LLC 
 6478     1179        255         334   AT&T Worldnet Services 
11492     1145        222          14   Cable One 
22773     1125       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      516         98         207   Evolva Telecom
35805      475         40           5   United Telecom of Georgia
 9198      471        138          12   Kazakhtelecom Data Network Ad
 3292      449       1906         394   TDC Tele Danmark
  702      416       1837         334   UUNET - Commercial IP service
 8551      377        354          41   Bezeq International
 8866      375        110          23   Bulgarian Telecommunication C
 3320      359       7068         305   Deutsche Telekom AG
 3215      349       3144         111   France Telecom Transpac
 3301      347       1411         303   TeliaNet Sweden

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     1588       2899         231   UniNet S.A. de C.V. 
10620      999        223         145   TVCABLE BOGOTA 
28573      818        668          84   NET Servicos de Comunicao S.A
 7303      665        351          96   Telecom Argentina Stet-France
22047      546        302          14   VTR PUNTO NET S.A. 
11830      474        308          59   Instituto Costarricense de El
11172      446         99          70   Servicios Alestra S.A de C.V 
14117      437         29          11   Telefonica del Sur S.A. 
 7738      431        858          29   Telecomunicacoes da Bahia S.A
 3816      425        193          71   Empresa Nacional de Telecomun

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     1026        188           7   TEDATA
24863      756        128          63   LINKdotNET AS number
 3741      273        857         233   The Internet Solution 
 2018      176        195         102   Tertiary Education Network 
 6713      175        167          12   Itissalat Al-MAGHRIB
29571      150         15           8   Ci Telecom Autonomous system 
29975      134        506          15   Vodacom
33776      124          7          11   Starcomms Nigeria Limited
 5536      121          8          18   Internet Egypt Network
 5713      116        508          67   Telkom SA Ltd 

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     4235       3879         311   bellsouth.net, inc. 
 4323     3756       1068         399   Time Warner Telecom
 1785     1779        715         136   PaeTec Communications, Inc.
 4766     1750       7507         461   Korea Telecom (KIX)
 7018     1590       5809        1032   AT&T WorldNet Services
 8151     1588       2899         231   UniNet S.A. de C.V. 
20115     1526       1484         667   Charter Communications 
17488     1458        143         132   Hathway IP Over Cable Interne
 2386     1292        632         933   AT&T Data Communications Serv
 4755     1280        296         148   TATA Communications formerly 

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

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

  ASN   No of nets  Net Savings Description
 4323      3756        3357      Time Warner Telecom
 1785      1779        1643      PaeTec Communications, Inc.
 8151      1588        1357      UniNet S.A. de C.V. 
17488      1458        1326      Hathway IP Over Cable Interne
 4766      1750        1289      Korea Telecom (KIX)
 4755      1280        1132      TATA Communications formerly 
11492      1145        1131      Cable One 
22773      1125        1059      Cox Communications, Inc.
18566      1059        1049      Covad Communications 
 8452      1026        1019      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        /8:20       /9:10      /10:25      /11:65      /12:177     
/13:353     /14:644     /15:1224    /16:10779   /17:5006    /18:8561    
/19:17650   /20:21503   /21:21436   /22:27640   /23:27536   /24:159858  
/25:930     /26:1135    /27:577     /28:234     /29:11      /30:8       
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2772          4235      bellsouth.net, inc. 
 4323     2369          3756      Time Warner Telecom
 4766     1430          1750      Korea Telecom (KIX)
 1785     1244          1779      PaeTec Communications, Inc.
17488     1224          1458      Hathway IP Over Cable Interne
11492     1067          1145      Cable One 
18566     1040          1059      Covad Communications 
 7018      955          1590      AT&T WorldNet Services
 8452      924          1026      TEDATA
10620      905           999      TVCABLE BOGOTA 

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

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

   1:1         2:1         4:13        8:234      12:2057     13:8      
  15:22       16:3        17:5        20:37       24:1282     32:49     
  34:2        38:625      40:98       41:1838     43:1        44:3      
  46:1        47:21       52:6        55:2        56:2        57:23     
  58:647      59:612      60:445      61:974      62:960      63:2009   
  64:3750     65:2369     66:4099     67:1775     68:1018     69:2810   
  70:687      71:232      72:1889     73:2        74:2021     75:190    
  76:357      77:848      78:601      79:399      80:950      81:810    
  82:469      83:448      84:529      85:1014     86:380      87:681    
  88:445      89:1507     90:59       91:2644     92:441      93:1157   
  94:1348     95:832      96:201      97:278      98:429      99:27     
 109:179     110:278     111:480     112:152     113:190     114:287    
 115:391     116:1089    117:588     118:366     119:802     120:143    
 121:698     122:1304    123:797     124:1024    125:1346    128:212    
 129:200     130:134     131:460     132:82      133:16      134:180    
 135:40      136:230     137:167     138:239     139:82      140:458    
 141:122     142:380     143:341     144:393     145:52      146:390    
 147:171     148:565     149:191     150:148     151:171     152:220    
 153:161     154:2       155:269     156:167     157:317     158:97     
 159:359     160:294     161:174     162:279     163:162     164:314    
 165:472     166:491     167:392     168:754     169:159     170:560    
 171:42      172:1       173:385     174:424     180:209     183:160    
 184:1       186:234     187:174     188:1379    189:650     190:3363   
 192:5733    193:4309    194:3363    195:2779    196:1184    198:3574   
 199:3380    200:5241    201:1420    202:7924    203:8291    204:3981   
 205:2149    206:2411    207:3049    208:3967    209:3390    210:2548   
 211:1144    212:1632    213:1632    214:246     215:57      216:4422   
 217:1364    218:479     219:422     220:1138    221:448     222:301    


End of report




More information about the NANOG mailing list