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Weekly Routing Table Report

  • From: Routing Analysis Role Account
  • Date: Fri May 25 14:07:39 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 26 May, 2007

Report Website: http://thyme.apnic.net
This report:    http://thyme.apnic.net/ap-data/2007/05/26/0400

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

BGP routing table entries examined:                              221520
    Prefixes after maximum aggregation:                          117658
    Deaggregation factor:                                          1.88
    Unique aggregates announced to Internet:                     107449
Total ASes present in the Internet Routing Table:                 25272
    Prefixes per ASN:                                              8.77
Origin-only ASes present in the Internet Routing Table:           22014
Origin ASes announcing only one prefix:                           10646
Transit ASes present in the Internet Routing Table:                3258
Transit-only ASes present in the Internet Routing Table:             78
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      24
    Max AS path prepend of ASN (16327)                               21
Prefixes from unregistered ASNs in the Routing Table:                 8
    Unregistered ASNs in the Routing Table:                           9
Prefixes from 32-bit ASNs in the Routing Table:                       8
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:             11
Number of addresses announced to Internet:                   1723331808
    Equivalent to 102 /8s, 183 /16s and 244 /24s
    Percentage of available address space announced:               46.5
    Percentage of allocated address space announced:               61.6
    Percentage of available address space allocated:               75.5
Total number of prefixes smaller than registry allocations:      116211

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

Prefixes being announced by APNIC Region ASes:                    51095
    Total APNIC prefixes after maximum aggregation:               20319
    APNIC Deaggregation factor:                                    2.51
Prefixes being announced from the APNIC address blocks:           48066
    Unique aggregates announced from the APNIC address blocks:    21288
APNIC Region origin ASes present in the Internet Routing Table:    2950
    APNIC Prefixes per ASN:                                       16.29
APNIC Region origin ASes announcing only one prefix:                793
APNIC Region transit ASes present in the Internet Routing Table:    444
Average APNIC Region AS path length visible:                        3.6
    Max APNIC Region AS path length visible:                         17
Number of APNIC addresses announced to Internet:              295454624
    Equivalent to 17 /8s, 156 /16s and 71 /24s
    Percentage of available APNIC address space announced:         73.2

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:                    106768
    Total ARIN prefixes after maximum aggregation:                62251
    ARIN Deaggregation factor:                                     1.72
Prefixes being announced from the ARIN address blocks:            78724
    Unique aggregates announced from the ARIN address blocks:     30794
ARIN Region origin ASes present in the Internet Routing Table:    11596
    ARIN Prefixes per ASN:                                         6.79
ARIN Region origin ASes announcing only one prefix:                4449
ARIN Region transit ASes present in the Internet Routing Table:    1052
Average ARIN Region AS path length visible:                         3.4
    Max ARIN Region AS path length visible:                          21
Number of ARIN addresses announced to Internet:               334135168
    Equivalent to 19 /8s, 234 /16s and 127 /24s
    Percentage of available ARIN address space announced:          73.8

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:                     45757
    Total RIPE prefixes after maximum aggregation:                29916
    RIPE Deaggregation factor:                                     1.53
Prefixes being announced from the RIPE address blocks:            42261
    Unique aggregates announced from the RIPE address blocks:     28259
RIPE Region origin ASes present in the Internet Routing Table:     9663
    RIPE Prefixes per ASN:                                         4.37
RIPE Region origin ASes announcing only one prefix:                5093
RIPE Region transit ASes present in the Internet Routing Table:    1550
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          24
Number of RIPE addresses announced to Internet:               306906752
    Equivalent to 18 /8s, 75 /16s and 6 /24s
    Percentage of available RIPE address space announced:          76.2

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, 80/5, 88/6, 92/7, 193/8, 194/7,
                       212/7 and 217/8

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

Prefixes being announced by LACNIC Region ASes:                   15305
    Total LACNIC prefixes after maximum aggregation:               4158
    LACNIC Deaggregation factor:                                   3.68
Prefixes being announced from the LACNIC address blocks:          13391
    Unique aggregates announced from the LACNIC address blocks:    7308
LACNIC Region origin ASes present in the Internet Routing Table:    796
    LACNIC Prefixes per ASN:                                      16.82
LACNIC Region origin ASes announcing only one prefix:               255
LACNIC Region transit ASes present in the Internet Routing Table:   142
Average LACNIC Region AS path length visible:                       4.2
    Max LACNIC Region AS path length visible:                        18
Number of LACNIC addresses announced to Internet:              38960896
    Equivalent to 2 /8s, 82 /16s and 127 /24s
    Percentage of available LACNIC address space announced:        58.1

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:                   2582
    Total AfriNIC prefixes after maximum aggregation:              1000
    AfriNIC Deaggregation factor:                                  2.58
Prefixes being announced from the AfriNIC address blocks:          1966
    Unique aggregates announced from the AfriNIC address blocks:   1175
AfriNIC Region origin ASes present in the Internet Routing Table:   188
    AfriNIC Prefixes per ASN:                                     10.46
AfriNIC Region origin ASes announcing only one prefix:               56
AfriNIC Region transit ASes present in the Internet Routing Table:   38
Average AfriNIC Region AS path length visible:                      3.7
    Max AfriNIC Region AS path length visible:                       15
Number of AfriNIC addresses announced to Internet:              6127104
    Equivalent to 0 /8s, 93 /16s and 126 /24s
    Percentage of available AfriNIC address space announced:       18.3

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
 4134     1286       9974         277   CHINANET-BACKBONE
 4755     1223        383          72   Videsh Sanchar Nigam Ltd. Aut
 9583     1111         79         382   Sify Limited
 9498      981        469          71   BHARTI BT INTERNET LTD.
 4766      783       4943         312   Korea Telecom (KIX)
23577      777         35         707   Korea Telecom (ATM-MPLS)
17488      694         45          38   Hathway IP Over Cable Interne
 7545      624        142          77   TPG Internet Pty Ltd
 1221      549       1954         424   Telstra Pty Ltd
18101      544        116          36   Reliance Infocom Ltd Internet
 4668      505         68          10   LG-EDS Systems Inc.
17676      504      10935          65   Softbank BB Corp.
 4812      462        821          76   China Telecom (Shanghai)
 9443      455        115          74   Primus Telecommunications
 7474      410        218         269   SingTel Optus Pty Ltd
 4802      409         86         148   Wantree Development
 9829      362        258          14   BSNL National Internet Backbo
17557      356         37         169   Pakistan Telecom
 2907      353       1700         301   SINET Japan
17974      349        129          12   PT TELEKOMUNIKASI INDONESIA

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1502       6160         992   AT&T WorldNet Services
 4323     1270       1032         365   Time Warner Telecom
 2386     1150        596         756   AT&T Data Communications Serv
 6478     1100        343         121   AT&T Worldnet Services 
11492     1073        104          24   Cable One 
 6197     1040        706         508   BellSouth Network Solutions, 
18566     1010        288           9   Covad Communications 
  701      958       6598         734   UUNET Technologies, Inc. 
  174      954       6791         863   Cogent Communications
 1239      819       2731         578   Sprint 
20115      807        724         428   Charter Communications 
 7011      798        227         477   Citizens Utilities 
19262      776       2662         209   Verizon Global Networks 
  209      743       3852         582   Qwest 
22773      721       1892          44   Cox Communications, Inc.
 5668      598        160          17   CenturyTel Internet Holdings,
 7385      596        166         463   Linkport Communications 
  852      589       1090         371   Telus Advanced Communications
 7029      587        488          80   Alltel Information Services, 
  721      573      21659         267   DLA Systems Automation Center

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      517       1939         410   UUNET - Commercial IP service
24863      346         47          32   LINKdotNET AS number
 3301      308       1455         288   TeliaNet Sweden
 3320      306       4994         253   Deutsche Telekom AG
 6746      280        128         255   Dynamic Network Technologies,
  680      260       2044         251   DFN-IP service G-WiN
 8220      250        459         241   COLT Telecommunications
 3215      246       2279          94   France Telecom Transpac
 8708      236        288         229   Romania Data Systems S.A.
 5089      219       1658          53   NTL Group Limited
 3269      216       2647          74   TELECOM ITALIA
 8551      206        196          30   Bezeq International
 3246      202        337         192   Song Networks
 3352      200       1799          36   Ibernet, Internet Access Netw
 9116      196        136          25   Goldenlines main autonomous s
 1257      190       1180         168   SWIPnet Swedish IP Network
12479      185        578           6   Uni2 Autonomous System
30890      183         15          90   SC Kappa Invexim SRL
 3300      182        171          89   AUCS Communications Services 
  786      176       1795         176   The JANET IP Service

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8151     1302       1870         211   UniNet S.A. de C.V. 
11830      483        299          19   Instituto Costarricense de El
11172      366        116          63   Servicios Alestra S.A de C.V 
16814      361         22           8   NSS, S.A. 
22047      317        238          12   VTR PUNTO NET S.A. 
 7303      279        143          25   Telecom Argentina Stet-France
 6471      265         74          31   ENTEL CHILE S.A. 
14117      243         17          14   Telefonica del Sur S.A. 
11556      229        128           3   Cable-Wireless Panama 
 6147      222        168          25   Telefonica Del Peru 
 6503      217        172          86   AVANTEL, S.A. 
20299      195         23          12   NEWCOM AMERICAS 
10620      186         53          24   TVCABLE BOGOTA 
10481      181         72           8   Prima S.A. 
14522      167         27           8   SatNet S.A. 
 7910      157         11          31   ANDINET ON LINE 
23216      157         19          42   RAMtelecom Telecomunicaciones
21826      155         27          59   INTERCABLE 
19429      154         94          43   E.T.B. 
 7738      143        474          22   Telecomunicacoes da Bahia S.A

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3741      284        867         224   The Internet Solution 
 8452      228        188           7   TEDATA
 6713      143        135          11   Itissalat Al-MAGHRIB
 2018      136        301         111   Tertiary Education Network 
15475      134         84           4   Nile Online
 5536      123          8          15   Internet Egypt Network
33783      119          8           9   EEPAD TISP TELECOM & INTERNET
24835       85         48           6   RAYA Telecom - Egypt
 2905       77        174          73   The Internetworking Company o
 2561       61          6           2   Egyptian Universities Network
15706       56         12           4   Sudatel Internet Exchange Aut
23889       49         16          13   MAURITIUS TELECOM
 5713       44        294          34   Telkom SA Ltd 
33774       42         13          23   AS Number for Telecom Algeria
16637       33         21          25   Johnnic e-Ventures 
33776       31          2           6   Starcomms Nigeria Limited
 8524       30          2           6   AUCEGYPT Autonomous System
21280       27          4           4   Swift Global Kenya Ltd.Is an 
33766       26          2           1   Nyala Communications Pty Ltd 
12455       25          6           3   Jambonet Autonomous system

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

  ASN   No of nets  Net Savings Description
 4755      1223        1151      Videsh Sanchar Nigam Ltd. Aut
 8151      1302        1091      UniNet S.A. de C.V. 
11492      1073        1049      Cable One 
 4134      1286        1009      CHINANET-BACKBONE
18566      1010        1001      Covad Communications 
 6478      1100         979      AT&T Worldnet Services 
 9498       981         910      BHARTI BT INTERNET LTD.
 4323      1270         905      Time Warner Telecom
 9583      1111         729      Sify Limited
22773       721         677      Cox Communications, Inc.
17488       694         656      Hathway IP Over Cable Interne
 5668       598         581      CenturyTel Internet Holdings,
19262       776         567      Verizon Global Networks 
 7545       624         547      TPG Internet Pty Ltd
 6197      1040         532      BellSouth Network Solutions, 
19916       568         517      OLM LLC 
18101       544         508      Reliance Infocom Ltd Internet
 7029       587         507      Alltel Information Services, 
15270       541         506      PaeTec.net -a division of Pae
  855       566         495      Canadian Research Network 

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

Bad AS  Designation  Network              Transit AS  Description
65019   PRIVATE       63.138.117.0/24      19034       Norcom Networks Corp
65332   PRIVATE       63.166.106.192/27     1803       SPRINT 
65242   PRIVATE       64.222.142.0/24      13674       Bell Atlantic Global
64858   PRIVATE       84.36.180.0/24       20858       EgyNet
36628   UNALLOCATED   192.41.162.0/24       2914       Verio, Inc. 
36628   UNALLOCATED   199.7.59.0/24         2914       Verio, Inc. 
24410   UNALLOCATED   203.119.28.0/24       4134       CHINANET-BACKBONE
22895   UNALLOCATED   216.174.38.0/24      19094       Adelphia Business So

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

Network            Origin AS  Description
7.1.1.0/24            1239     Sprint 
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       /10:14      /11:35      /12:123     
/13:237     /14:452     /15:870     /16:9413    /17:3894    /18:6371    
/19:13491   /20:15488   /21:13991   /22:18197   /23:19419   /24:117340  
/25:764     /26:825     /27:474     /28:66      /29:8       /30:8       
/31:0       /32:12      

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

  ASN   No of nets  Total ann.   Description
 6478     1091          1100      AT&T Worldnet Services 
11492     1059          1073      Cable One 
18566      992          1010      Covad Communications 
 9583      948          1111      Sify Limited
 2386      845          1150      AT&T Data Communications Serv
 7018      809          1502      AT&T WorldNet Services
 6197      795          1040      BellSouth Network Solutions, 
23577      763           777      Korea Telecom (ATM-MPLS)
 7011      699           798      Citizens Utilities 
 8151      680          1302      UniNet S.A. de C.V. 
 9498      652           981      BHARTI BT INTERNET LTD.
 4755      620          1223      Videsh Sanchar Nigam Ltd. Aut
 4766      590           783      Korea Telecom (KIX)
19916      563           568      OLM LLC 
 4323      526          1270      Time Warner Telecom
17488      515           694      Hathway IP Over Cable Interne
15270      508           541      PaeTec.net -a division of Pae
 4668      495           505      LG-EDS Systems Inc.
18101      466           544      Reliance Infocom Ltd Internet
  855      464           566      Canadian Research Network 

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

   4:9         7:1         8:73        9:1        12:1808     15:19     
  16:3        17:3        18:8        20:38       24:946      25:1      
  32:52       33:2        38:311      40:61       41:134      44:2      
  47:5        52:4        55:3        56:3        57:25       58:397    
  59:391      60:296      61:947      62:895      63:1980     64:3126   
  65:2368     66:3279     67:814      68:637      69:1850     70:515    
  71:105      72:1322     73:1        74:481      75:262      76:60     
  77:199      78:2        80:816      81:802      82:581      83:387    
  84:408      85:766      86:342      87:465      88:274      89:863    
  90:7        91:315      97:6       116:73      121:185     122:531    
 123:104     124:817     125:935     128:282     129:223     130:129    
 131:365     132:52      133:9       134:192     135:38      136:186    
 137:80      138:140     139:70      140:477     141:171     142:368    
 143:234     144:293     145:43      146:322     147:118     148:396    
 149:143     150:115     151:159     152:92      153:124     154:4      
 155:254     156:152     157:186     158:158     159:158     160:106    
 161:91      162:234     163:185     164:447     165:404     166:240    
 167:283     168:498     169:120     170:402     171:16      172:1      
 189:524     190:624     192:5772    193:3851    194:3128    195:2221   
 196:939     198:3736    199:3292    200:4784    201:1031    202:7285   
 203:7525    204:3968    205:2061    206:2361    207:2875    208:2697   
 209:3590    210:2467    211:964     212:1319    213:1460    214:413    
 215:40      216:4031    217:1154    218:360     219:379     220:948    
 221:402     222:263    

End of report