North American Network Operators Group

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Weekly Routing Table Report

  • From: Routing Analysis Role Account
  • Date: Fri Sep 14 14:09:48 2007

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 [email protected]

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

If you have any comments please contact Philip Smith <[email protected]>.

Routing Table Report   04:00 +10GMT Sat 15 Sep, 2007

Report Website: http://thyme.apnic.net
This report:    http://thyme.apnic.net/ap-data/2007/09/15/0400

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

BGP routing table entries examined:                              230723
    Prefixes after maximum aggregation:                          120516
    Deaggregation factor:                                          1.91
    Unique aggregates announced to Internet:                     112273
Total ASes present in the Internet Routing Table:                 26196
    Prefixes per ASN:                                              8.81
Origin-only ASes present in the Internet Routing Table:           22813
Origin ASes announcing only one prefix:                           11115
Transit ASes present in the Internet Routing Table:                3383
Transit-only ASes present in the Internet Routing Table:             72
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      20
    Max AS path prepend of ASN (35389)                               16
Prefixes from unregistered ASNs in the Routing Table:                17
    Unregistered ASNs in the Routing Table:                          10
Prefixes from 32-bit ASNs in the Routing Table:                       6
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:             12
Number of addresses announced to Internet:                   1776529760
    Equivalent to 105 /8s, 227 /16s and 177 /24s
    Percentage of available address space announced:               47.9
    Percentage of allocated address space announced:               62.8
    Percentage of available address space allocated:               76.4
Total number of prefixes smaller than registry allocations:      122544

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

Prefixes being announced by APNIC Region ASes:                    53768
    Total APNIC prefixes after maximum aggregation:               20884
    APNIC Deaggregation factor:                                    2.57
Prefixes being announced from the APNIC address blocks:           50695
    Unique aggregates announced from the APNIC address blocks:    22534
APNIC Region origin ASes present in the Internet Routing Table:    3047
    APNIC Prefixes per ASN:                                       16.64
APNIC Region origin ASes announcing only one prefix:                803
APNIC Region transit ASes present in the Internet Routing Table:    462
Average APNIC Region AS path length visible:                        3.7
    Max APNIC Region AS path length visible:                         15
Number of APNIC addresses announced to Internet:              313705632
    Equivalent to 18 /8s, 178 /16s and 196 /24s
    Percentage of available APNIC address space announced:         77.7

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911
APNIC Address Blocks   58/7, 60/7, 116/6, 120/6, 124/7, 126/8, 202/7
                       210/7, 218/7, 220/7 and 222/8

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

Prefixes being announced by ARIN Region ASes:                    108944
    Total ARIN prefixes after maximum aggregation:                63047
    ARIN Deaggregation factor:                                     1.73
Prefixes being announced from the ARIN address blocks:            80263
    Unique aggregates announced from the ARIN address blocks:     31964
ARIN Region origin ASes present in the Internet Routing Table:    11828
    ARIN Prefixes per ASN:                                         6.79
ARIN Region origin ASes announcing only one prefix:                4536
ARIN Region transit ASes present in the Internet Routing Table:    1091
Average ARIN Region AS path length visible:                         3.4
    Max ARIN Region AS path length visible:                          17
Number of ARIN addresses announced to Internet:               345002880
    Equivalent to 20 /8s, 144 /16s and 83 /24s
    Percentage of available ARIN address space announced:          76.2

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
ARIN Address Blocks    24/8, 63/8, 64/5, 72/6, 76/8, 96/6, 199/8, 204/6,
                       208/7 and 216/8

RIPE Region Analysis Summary
----------------------------

Prefixes being announced by RIPE Region ASes:                     48429
    Total RIPE prefixes after maximum aggregation:                31070
    RIPE Deaggregation factor:                                     1.56
Prefixes being announced from the RIPE address blocks:            44838
    Unique aggregates announced from the RIPE address blocks:     29638
RIPE Region origin ASes present in the Internet Routing Table:    10179
    RIPE Prefixes per ASN:                                         4.40
RIPE Region origin ASes announcing only one prefix:                5429
RIPE Region transit ASes present in the Internet Routing Table:    1617
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          20
Number of RIPE addresses announced to Internet:               326794112
    Equivalent to 19 /8s, 122 /16s and 123 /24s
    Percentage of available RIPE address space announced:          74.9

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
                       40960-44031
RIPE Address Blocks    62/8, 77/8, 78/7, 80/4, 193/8, 194/7, 212/7
                       and 217/8

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

Prefixes being announced by LACNIC Region ASes:                   16828
    Total LACNIC prefixes after maximum aggregation:               4469
    LACNIC Deaggregation factor:                                   3.77
Prefixes being announced from the LACNIC address blocks:          14925
    Unique aggregates announced from the LACNIC address blocks:    7943
LACNIC Region origin ASes present in the Internet Routing Table:    864
    LACNIC Prefixes per ASN:                                      17.27
LACNIC Region origin ASes announcing only one prefix:               280
LACNIC Region transit ASes present in the Internet Routing Table:   146
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        19
Number of LACNIC addresses announced to Internet:              42266112
    Equivalent to 2 /8s, 132 /16s and 238 /24s
    Percentage of available LACNIC address space announced:        63.0

LACNIC AS Blocks       26592-26623, 27648-28671, plus ERX transfers
LACNIC Address Blocks  189/8, 190/8, 200/7

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

Prefixes being announced by AfriNIC Region ASes:                   2741
    Total AfriNIC prefixes after maximum aggregation:              1034
    AfriNIC Deaggregation factor:                                  2.65
Prefixes being announced from the AfriNIC address blocks:          2297
    Unique aggregates announced from the AfriNIC address blocks:   1336
AfriNIC Region origin ASes present in the Internet Routing Table:   205
    AfriNIC Prefixes per ASN:                                     11.20
AfriNIC Region origin ASes announcing only one prefix:               67
AfriNIC Region transit ASes present in the Internet Routing Table:   35
Average AfriNIC Region AS path length visible:                      4.1
    Max AfriNIC Region AS path length visible:                       20
Number of AfriNIC addresses announced to Internet:              7463168
    Equivalent to 0 /8s, 113 /16s and 225 /24s
    Percentage of available AfriNIC address space announced:       22.2

AfriNIC AS Blocks      36864-37887 & ERX transfers
AfriNIC Address Blocks 41/8, 196/8

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 4755     1341        383          69   Videsh Sanchar Nigam Ltd. Aut
 9583     1130         81         405   Sify Limited
 4134     1077      11220         293   CHINANET-BACKBONE
 9498     1001        532          64   BHARTI BT INTERNET LTD.
 4766      809       5441         321   Korea Telecom (KIX)
17488      806         52          58   Hathway IP Over Cable Interne
23577      788         34         683   Korea Telecom (ATM-MPLS)
 7545      723        159         120   TPG Internet Pty Ltd
18101      596        119          50   Reliance Infocom Ltd Internet
 4812      547        974          94   China Telecom (Shanghai)
 1221      537       1950         418   Telstra Pty Ltd
 4668      517         68          10   LG-EDS Systems Inc.
17676      502      10903          63   Softbank BB Corp.
 4808      486        779         116   CNCGROUP IP network: China169
 9443      467        122          77   Primus Telecommunications
 4802      437        117         153   Wantree Development
 7474      381        218         268   SingTel Optus Pty Ltd
17974      378        130          13   PT TELEKOMUNIKASI INDONESIA
 9829      359        257          10   BSNL National Internet Backbo
 4837      356       5104         167   chinanet IDC center beijing n

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1469       6121         992   AT&T WorldNet Services
 4323     1323        990         370   Time Warner Telecom
 2386     1217        635         732   AT&T Data Communications Serv
11492     1146        112          17   Cable One 
 6478     1137        326         161   AT&T Worldnet Services 
 6197     1033        718         509   BellSouth Network Solutions, 
18566     1024        288           9   Covad Communications 
  174      973       6780         859   Cogent Communications
 7011      921        279         549   Citizens Utilities 
  701      874       6573         679   UUNET Technologies, Inc. 
20115      821        753         440   Charter Communications 
 1239      803       2719         565   Sprint 
19262      774       2745         184   Verizon Global Networks 
22773      772       2149          50   Cox Communications, Inc.
  209      751       3836         592   Qwest 
 5668      659        176          23   CenturyTel Internet Holdings,
 3356      636      10817         362   Level 3 Communications, LLC 
 6517      590        165          35   Yipes Communications, Inc. 
  852      577       1096         362   Telus Advanced Communications
15270      576        160          38   PaeTec.net -a division of Pae

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      494       1923         396   UUNET - Commercial IP service
24863      367         57          40   LINKdotNET AS number
 9116      351        168          26   Goldenlines main autonomous s
 3301      318       1457         296   TeliaNet Sweden
 3320      315       6035         262   Deutsche Telekom AG
 6746      290        130         266   Dynamic Network Technologies,
  680      269       2045         257   DFN-IP service G-WiN
 8551      264        252          37   Bezeq International
 8708      262        420         241   Romania Data Systems S.A.
 3215      258       2424          98   France Telecom Transpac
 8220      256        444         239   COLT Telecommunications
 3352      229       1866          39   Ibernet, Internet Access Netw
 5089      224       1658          54   NTL Group Limited
 3269      223       2839          73   TELECOM ITALIA
 9121      214       1441          24   TTnet Autonomous System
 3292      197       1380         177   TDC Tele Danmark
 3300      194        172          95   AUCS Communications Services 
12479      194        578           6   Uni2 Autonomous System
 1257      192       1195         170   SWIPnet Swedish IP Network
 3246      186        253         176   Song Networks

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8151      902       1974         206   UniNet S.A. de C.V. 
11830      514        299           9   Instituto Costarricense de El
16814      426         26           9   NSS, S.A. 
11172      374        114          60   Servicios Alestra S.A de C.V 
 7303      350        166          52   Telecom Argentina Stet-France
 6471      329         75          33   ENTEL CHILE S.A. 
14522      329         28           7   SatNet S.A. 
22047      317        246          13   VTR PUNTO NET S.A. 
14117      284         19          15   Telefonica del Sur S.A. 
10481      278        104           9   Prima S.A. 
11664      276         30          13   Keytech SA 
10620      235         65          22   TVCABLE BOGOTA 
11556      235        128           3   Cable-Wireless Panama 
 6147      228        178          24   Telefonica Del Peru 
 6503      201        170          82   AVANTEL, S.A. 
23216      197         17          46   RAMtelecom Telecomunicaciones
20299      180         25          31   NEWCOM AMERICAS 
 8163      177         11           6   METROTEL REDES S.A. 
19169      171         12          18   Telconet 
21826      171         30          58   INTERCABLE 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3741      285        870         226   The Internet Solution 
 8452      219        188           7   TEDATA
 6713      142        135          11   Itissalat Al-MAGHRIB
 2018      140        301         115   Tertiary Education Network 
33783      125          8          12   EEPAD TISP TELECOM & INTERNET
 5536      124          8          10   Internet Egypt Network
33776      100          6           3   Starcomms Nigeria Limited
24835       87         48           6   RAYA Telecom - Egypt
15475       76         84           4   Nile Online
 2905       75        174          72   The Internetworking Company o
23889       69         24          15   MAURITIUS TELECOM
 2561       62          6           2   Egyptian Universities Network
15706       56         12           4   Sudatel Internet Exchange Aut
33774       47         29          25   AS Number for Telecom Algeria
 5713       46        294          36   Telkom SA Ltd 
16637       42         21          29   Johnnic e-Ventures 
 8524       30          2          13   AUCEGYPT Autonomous System
21280       29          4           4   Swift Global Kenya Ltd.Is an 
12455       28          6           3   Jambonet Autonomous system
10798       27         16           1   Standard Bank of South Africa

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

  ASN   No of nets  Net Savings Description
 4755      1341        1272      Videsh Sanchar Nigam Ltd. Aut
11492      1146        1129      Cable One 
18566      1024        1015      Covad Communications 
 6478      1137         976      AT&T Worldnet Services 
 4323      1323         953      Time Warner Telecom
 9498      1001         937      BHARTI BT INTERNET LTD.
 4134      1077         784      CHINANET-BACKBONE
17488       806         748      Hathway IP Over Cable Interne
 9583      1130         725      Sify Limited
22773       772         722      Cox Communications, Inc.
 8151       902         696      UniNet S.A. de C.V. 
 5668       659         636      CenturyTel Internet Holdings,
 7545       723         603      TPG Internet Pty Ltd
19262       774         590      Verizon Global Networks 
 6517       590         555      Yipes Communications, Inc. 
18101       596         546      Reliance Infocom Ltd Internet
15270       576         538      PaeTec.net -a division of Pae
 6197      1033         524      BellSouth Network Solutions, 
19916       568         517      OLM LLC 
 4668       517         507      LG-EDS Systems Inc.

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

Bad AS  Designation  Network              Transit AS  Description
43460   UNALLOCATED   77.75.64.0/24        39180       SARL MWSP
43200   UNALLOCATED   81.26.32.0/19        15659       NEXTGENTEL Autonomou
43200   UNALLOCATED   85.89.192.0/19       15659       NEXTGENTEL Autonomou
43408   UNALLOCATED   87.238.207.0/24      31742       Sotaconnect UK
42789   UNALLOCATED   91.150.224.0/19      16095       Jay.net autonomous S
43618   UNALLOCATED   91.195.74.0/23       43576       LTD "KuMIR TELECOM"
64586   PRIVATE       192.170.73.0/24       4845       Chung Hsiao East Roa
42789   UNALLOCATED   193.33.190.0/23      16095       Jay.net autonomous S
43200   UNALLOCATED   193.161.232.0/22     15659       NEXTGENTEL Autonomou
43200   UNALLOCATED   193.161.252.0/24     15659       NEXTGENTEL Autonomou
43311   UNALLOCATED   195.248.250.0/23       174       Cogent Communication
64586   PRIVATE       202.165.137.0/24      4845       Chung Hsiao East Roa
64586   PRIVATE       202.165.140.0/24      4845       Chung Hsiao East Roa
64586   PRIVATE       202.165.141.0/24      4845       Chung Hsiao East Roa
64586   PRIVATE       202.165.142.0/24      4845       Chung Hsiao East Roa
64586   PRIVATE       202.165.143.0/24      4845       Chung Hsiao East Roa
24410   UNALLOCATED   203.119.28.0/24       4134       CHINANET-BACKBONE

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

Network            Origin AS  Description
7.1.1.0/24            1239     Sprint 
101.13.13.0/24        8764     LIETUVOS-TELEKOMAS Autonomous
132.0.0.0/10           721     DLA Systems Automation Center
137.0.0.0/13           721     DLA Systems Automation Center
158.0.0.0/13           721     DLA Systems Automation Center
172.33.1.0/24         7018     AT&T WorldNet Services
192.0.10.0/24         9498     BHARTI BT INTERNET LTD.
192.44.0.0/24         5501     Fraunhofer Gesellschaft
192.44.0.0/19          702     UUNET - Commercial IP service
192.70.164.0/24      25689     National Research Council of 
192.153.136.0/21       721     DLA Systems Automation Center
192.172.0.0/19         721     DLA Systems Automation Center

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

 /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
 /7:0        /8:19       /9:9       /10:15      /11:37      /12:135     
/13:262     /14:471     /15:922     /16:9614    /17:4075    /18:6622    
/19:13957   /20:16253   /21:14957   /22:19245   /23:20167   /24:121574  
/25:760     /26:1020    /27:514     /28:82      /29:5       /30:0       
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
11492     1138          1146      Cable One 
 6478     1136          1137      AT&T Worldnet Services 
18566     1006          1024      Covad Communications 
 9583      972          1130      Sify Limited
 2386      909          1217      AT&T Data Communications Serv
 7018      820          1469      AT&T WorldNet Services
 7011      813           921      Citizens Utilities 
 6197      786          1033      BellSouth Network Solutions, 
23577      779           788      Korea Telecom (ATM-MPLS)
 4755      749          1341      Videsh Sanchar Nigam Ltd. Aut
 9498      673          1001      BHARTI BT INTERNET LTD.
17488      629           806      Hathway IP Over Cable Interne
 4766      607           809      Korea Telecom (KIX)
19916      563           568      OLM LLC 
 6517      555           590      Yipes Communications, Inc. 
 4323      554          1323      Time Warner Telecom
15270      540           576      PaeTec.net -a division of Pae
 5668      524           659      CenturyTel Internet Holdings,
 4668      507           517      LG-EDS Systems Inc.
18101      502           596      Reliance Infocom Ltd Internet

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

   4:8         7:1         8:80       12:1804     13:1        15:20     
  16:3        17:3        18:13       20:36       24:966      25:1      
  32:60       33:3        38:348      40:60       41:321      44:2      
  47:4        52:4        55:3        56:3        57:24       58:473    
  59:406      60:369      61:993      62:920      63:2016     64:3199   
  65:2388     66:3408     67:800      68:661      69:1975     70:447    
  71:105      72:1399     73:4        74:652      75:259      76:125    
  77:348      78:156      80:830      81:831      82:586      83:361    
  84:621      85:816      86:343      87:517      88:279      89:978    
  90:24       91:548      96:1        97:6        98:2       101:1      
 116:322     117:172     118:19      121:289     122:606     123:176    
 124:663     125:988     128:271     129:212     130:139     131:361    
 132:55      133:9       134:197     135:34      136:188     137:82     
 138:154     139:74      140:505     141:174     142:384     143:255    
 144:304     145:46      146:331     147:125     148:414     149:148    
 150:111     151:159     152:87      153:119     154:3       155:259    
 156:161     157:218     158:158     159:173     160:120     161:95     
 162:175     163:182     164:485     165:396     166:284     167:298    
 168:516     169:122     170:388     171:22      172:2       189:74     
 190:1104    192:5703    193:3993    194:3198    195:2281    196:971    
 198:3820    199:3216    200:5283    201:1195    202:7364    203:7709   
 204:3905    205:1973    206:2416    207:2847    208:2843    209:3463   
 210:2470    211:1088    212:1313    213:1473    214:420     215:44     
 216:3983    217:1198    218:323     219:372     220:1011    221:413    
 222:263    

End of report