Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Feb 5 12:44:12 CST 2010


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 06 Feb, 2010

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

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

BGP routing table entries examined:                              311094
    Prefixes after maximum aggregation:                          143960
    Deaggregation factor:                                          2.16
    Unique aggregates announced to Internet:                     152571
Total ASes present in the Internet Routing Table:                 33246
    Prefixes per ASN:                                              9.36
Origin-only ASes present in the Internet Routing Table:           28867
Origin ASes announcing only one prefix:                           14076
Transit ASes present in the Internet Routing Table:                4379
Transit-only ASes present in the Internet Routing Table:            102
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      23
    Max AS path prepend of ASN ( 9503)                               21
Prefixes from unregistered ASNs in the Routing Table:               819
    Unregistered ASNs in the Routing Table:                         132
Number of 32-bit ASNs allocated by the RIRs:                        425
Prefixes from 32-bit ASNs in the Routing Table:                     380
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            243
Number of addresses announced to Internet:                   2182589120
    Equivalent to 130 /8s, 23 /16s and 170 /24s
    Percentage of available address space announced:               58.9
    Percentage of allocated address space announced:               66.1
    Percentage of available address space allocated:               89.1
    Percentage of address space in use by end-sites:               81.1
Total number of prefixes smaller than registry allocations:      149895

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

Prefixes being announced by APNIC Region ASes:                    75113
    Total APNIC prefixes after maximum aggregation:               25903
    APNIC Deaggregation factor:                                    2.90
Prefixes being announced from the APNIC address blocks:           71774
    Unique aggregates announced from the APNIC address blocks:    31611
APNIC Region origin ASes present in the Internet Routing Table:    3946
    APNIC Prefixes per ASN:                                       18.19
APNIC Region origin ASes announcing only one prefix:               1079
APNIC Region transit ASes present in the Internet Routing Table:    625
Average APNIC Region AS path length visible:                        3.6
    Max APNIC Region AS path length visible:                         23
Number of APNIC addresses announced to Internet:              491247392
    Equivalent to 29 /8s, 71 /16s and 215 /24s
    Percentage of available APNIC address space announced:         77.1

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     1/8,  27/8,  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:                    129717
    Total ARIN prefixes after maximum aggregation:                67664
    ARIN Deaggregation factor:                                     1.92
Prefixes being announced from the ARIN address blocks:           103877
    Unique aggregates announced from the ARIN address blocks:     39391
ARIN Region origin ASes present in the Internet Routing Table:    13492
    ARIN Prefixes per ASN:                                         7.70
ARIN Region origin ASes announcing only one prefix:                5215
ARIN Region transit ASes present in the Internet Routing Table:    1331
Average ARIN Region AS path length visible:                         3.4
    Max ARIN Region AS path length visible:                          22
Number of ARIN addresses announced to Internet:               738405152
    Equivalent to 44 /8s, 3 /16s and 43 /24s
    Percentage of available ARIN address space announced:          64.7

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:                     71727
    Total RIPE prefixes after maximum aggregation:                41721
    RIPE Deaggregation factor:                                     1.72
Prefixes being announced from the RIPE address blocks:            64752
    Unique aggregates announced from the RIPE address blocks:     43107
RIPE Region origin ASes present in the Internet Routing Table:    14046
    RIPE Prefixes per ASN:                                         4.61
RIPE Region origin ASes announcing only one prefix:                7283
RIPE Region transit ASes present in the Internet Routing Table:    2097
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          21
Number of RIPE addresses announced to Internet:               413672064
    Equivalent to 24 /8s, 168 /16s and 34 /24s
    Percentage of available RIPE address space announced:          77.1

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:                   27455
    Total LACNIC prefixes after maximum aggregation:               6572
    LACNIC Deaggregation factor:                                   4.18
Prefixes being announced from the LACNIC address blocks:          25808
    Unique aggregates announced from the LACNIC address blocks:   13850
LACNIC Region origin ASes present in the Internet Routing Table:   1239
    LACNIC Prefixes per ASN:                                      20.83
LACNIC Region origin ASes announcing only one prefix:               406
LACNIC Region transit ASes present in the Internet Routing Table:   208
Average LACNIC Region AS path length visible:                       4.1
    Max LACNIC Region AS path length visible:                        23
Number of LACNIC addresses announced to Internet:              70394624
    Equivalent to 4 /8s, 50 /16s and 35 /24s
    Percentage of available LACNIC address space announced:        69.9

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:                   6477
    Total AfriNIC prefixes after maximum aggregation:              1734
    AfriNIC Deaggregation factor:                                  3.74
Prefixes being announced from the AfriNIC address blocks:          4855
    Unique aggregates announced from the AfriNIC address blocks:   1405
AfriNIC Region origin ASes present in the Internet Routing Table:   341
    AfriNIC Prefixes per ASN:                                     14.24
AfriNIC Region origin ASes announcing only one prefix:               93
AfriNIC Region transit ASes present in the Internet Routing Table:   73
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       16
Number of AfriNIC addresses announced to Internet:             14853376
    Equivalent to 0 /8s, 226 /16s and 165 /24s
    Percentage of available AfriNIC address space announced:       44.3

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     1858       7511         472   Korea Telecom (KIX)
 4755     1274        287         138   TATA Communications formerly 
17488     1272        131         139   Hathway IP Over Cable Interne
18101     1091        221          40   Reliance Infocom Ltd Internet
 4134     1018      19607         398   CHINANET-BACKBONE
 9583      985         71         490   Sify Limited
 7545      939        198          98   TPG Internet Pty Ltd
17974      887        277          43   PT TELEKOMUNIKASI INDONESIA
 4808      851       1582         211   CNCGROUP IP network: China169
24560      843        299         170   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     4132       3875         317   bellsouth.net, inc. 
 4323     3785       1088         395   Time Warner Telecom
 1785     1859        699         131   PaeTec Communications, Inc.
 7018     1584       5760        1021   AT&T WorldNet Services
20115     1538       1487         673   Charter Communications 
 2386     1298        616         919   AT&T Data Communications Serv
 3356     1208      10931         421   Level 3 Communications, LLC 
11492     1144        222          14   Cable One 
22773     1128       2600          66   Cox Communications, Inc.
 6478     1109        241         225   AT&T Worldnet Services 

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
35805      568         40           5   United Telecom of Georgia
 3292      455       1904         397   TDC Tele Danmark
30890      451        100         204   Evolva Telecom
  702      423       1822         337   UUNET - Commercial IP service
 8551      397        353          37   Bezeq International
 8866      376        110          24   Bulgarian Telecommunication C
 3320      360       7069         309   Deutsche Telekom AG
 3301      351       1412         312   TeliaNet Sweden
 3215      347       3206         103   France Telecom Transpac
12479      322        576           5   Uni2 Autonomous System

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     1571       2886         240   UniNet S.A. de C.V. 
10620      996        225         145   TVCABLE BOGOTA 
28573      855        679          86   NET Servicos de Comunicao S.A
 7303      676        357          99   Telecom Argentina Stet-France
22047      534        310          15   VTR PUNTO NET S.A. 
 6503      490        167         192   AVANTEL, S.A. 
11830      473        308          59   Instituto Costarricense de El
11172      445         99          70   Servicios Alestra S.A de C.V 
14117      439         29          12   Telefonica del Sur S.A. 
 3816      432        194          70   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     1027        445           9   TEDATA
24863      722        144          40   LINKdotNET AS number
36992      541        119         139   Etisalat MISR
 3741      273        854         233   The Internet Solution 
 2018      209        215         120   Tertiary Education Network 
 6713      177        167          12   Itissalat Al-MAGHRIB
29571      170         19           9   Ci Telecom Autonomous system 
29975      134        506          15   Vodacom
33776      123          7          11   Starcomms Nigeria Limited
 5536      116          8           3   Internet Egypt Network

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     4132       3875         317   bellsouth.net, inc. 
 4323     3785       1088         395   Time Warner Telecom
 1785     1859        699         131   PaeTec Communications, Inc.
 4766     1858       7511         472   Korea Telecom (KIX)
 7018     1584       5760        1021   AT&T WorldNet Services
 8151     1571       2886         240   UniNet S.A. de C.V. 
20115     1538       1487         673   Charter Communications 
 2386     1298        616         919   AT&T Data Communications Serv
 4755     1274        287         138   TATA Communications formerly 
17488     1272        131         139   Hathway IP Over Cable Interne

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

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

  ASN   No of nets  Net Savings Description
 4323      3785        3390      Time Warner Telecom
 1785      1859        1728      PaeTec Communications, Inc.
 4766      1858        1386      Korea Telecom (KIX)
 8151      1571        1331      UniNet S.A. de C.V. 
 4755      1274        1136      TATA Communications formerly 
17488      1272        1133      Hathway IP Over Cable Interne
11492      1144        1130      Cable One 
22773      1128        1062      Cox Communications, Inc.
18101      1091        1051      Reliance Infocom Ltd Internet
18566      1059        1049      Covad Communications 

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   12.39.155.0/24        7018       AT&T WorldNet Servic
26973   UNALLOCATED   12.39.159.0/24        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
41.77.236.0/22       23456     32-bit ASN transition
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

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        /8:21       /9:10      /10:25      /11:65      /12:185     
/13:384     /14:659     /15:1247    /16:10899   /17:5114    /18:8708    
/19:17895   /20:21843   /21:21895   /22:28211   /23:28324   /24:162692  
/25:935     /26:1163    /27:581     /28:214     /29:9       /30:7       
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2690          4132      bellsouth.net, inc. 
 4323     2353          3785      Time Warner Telecom
 4766     1476          1858      Korea Telecom (KIX)
 1785     1321          1859      PaeTec Communications, Inc.
11492     1062          1144      Cable One 
17488     1051          1272      Hathway IP Over Cable Interne
18566     1040          1059      Covad Communications 
18101      962          1091      Reliance Infocom Ltd Internet
 7018      952          1584      AT&T WorldNet Services
 8452      926          1027      TEDATA

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

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

   2:1         4:12        8:234      12:1998     13:10       15:22     
  16:3        17:8        20:39       24:1316     27:1        32:48     
  38:646      40:99       41:1941     44:3        46:1        47:26     
  52:6        55:2        56:2        57:23       58:643      59:632    
  60:397      61:1098     62:1039     63:2014     64:3802     65:2364   
  66:4103     67:1802     68:1039     69:2831     70:689      71:235    
  72:1869     73:2        74:2107     75:238      76:338      77:824    
  78:579      79:402      80:977      81:775      82:453      83:438    
  84:630      85:1009     86:381      87:688      88:419      89:1540   
  90:64       91:2708     92:422      93:1183     94:1378     95:791    
  96:212      97:295      98:536      99:23      100:1       109:305    
 110:296     111:425     112:231     113:224     114:354     115:518    
 116:1031    117:618     118:377     119:809     120:144     121:825    
 122:1402    123:871     124:1077    125:1285    128:196     129:202    
 130:139     131:482     132:82      133:16      134:195     135:42     
 136:226     137:177     138:238     139:89      140:463     141:132    
 142:377     143:339     144:388     145:51      146:405     147:178    
 148:568     149:204     150:146     151:170     152:248     153:165    
 154:2       155:274     156:178     157:331     158:98      159:355    
 160:305     161:163     162:272     163:165     164:304     165:462    
 166:503     167:389     168:761     169:157     170:569     171:48     
 172:3       173:467     174:532     175:37      178:5       180:301    
 183:226     184:3       186:257     187:227     188:1293    189:661    
 190:3504    192:5728    193:4457    194:3345    195:2779    196:1176   
 198:3534    199:3392    200:5325    201:1473    202:8092    203:8313   
 204:4020    205:2197    206:2482    207:2994    208:3922    209:3428   
 210:2539    211:1186    212:1661    213:1659    214:250     215:61     
 216:4429    217:1508    218:484     219:442     220:1067    221:470    
 222:306    

End of report




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