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Weekly Routing Table Report

  • From: Routing Analysis Role Account
  • Date: Fri Sep 28 14:30:30 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 bgp-stats@xxxxxxxxxxxxxxx

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

If you have any comments please contact Philip Smith <pfs@xxxxxxxxx>.

Routing Table Report   04:00 +10GMT Sat 29 Sep, 2007

Report Website: http://thyme.apnic.net
This report:    http://thyme.apnic.net/ap-data/2007/09/29/0400

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

BGP routing table entries examined:                              233332
    Prefixes after maximum aggregation:                          121009
    Deaggregation factor:                                          1.93
    Unique aggregates announced to Internet:                     113214
Total ASes present in the Internet Routing Table:                 26304
    Prefixes per ASN:                                              8.87
Origin-only ASes present in the Internet Routing Table:           22901
Origin ASes announcing only one prefix:                           11173
Transit ASes present in the Internet Routing Table:                3403
Transit-only ASes present in the Internet Routing Table:             73
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      22
    Max AS path prepend of ASN (35389)                               16
Prefixes from unregistered ASNs in the Routing Table:                21
    Unregistered ASNs in the Routing Table:                           7
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:             12
Number of addresses announced to Internet:                   1787287392
    Equivalent to 106 /8s, 135 /16s and 215 /24s
    Percentage of available address space announced:               48.2
    Percentage of allocated address space announced:               63.1
    Percentage of available address space allocated:               76.4
Total number of prefixes smaller than registry allocations:      124191

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

Prefixes being announced by APNIC Region ASes:                    54550
    Total APNIC prefixes after maximum aggregation:               20985
    APNIC Deaggregation factor:                                    2.60
Prefixes being announced from the APNIC address blocks:           51477
    Unique aggregates announced from the APNIC address blocks:    22764
APNIC Region origin ASes present in the Internet Routing Table:    3064
    APNIC Prefixes per ASN:                                       16.80
APNIC Region origin ASes announcing only one prefix:                812
APNIC Region transit ASes present in the Internet Routing Table:    474
Average APNIC Region AS path length visible:                        3.6
    Max APNIC Region AS path length visible:                         18
Number of APNIC addresses announced to Internet:              319989664
    Equivalent to 19 /8s, 18 /16s and 167 /24s
    Percentage of available APNIC address space announced:         79.3

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:                    109895
    Total ARIN prefixes after maximum aggregation:                63243
    ARIN Deaggregation factor:                                     1.74
Prefixes being announced from the ARIN address blocks:            81066
    Unique aggregates announced from the ARIN address blocks:     32140
ARIN Region origin ASes present in the Internet Routing Table:    11850
    ARIN Prefixes per ASN:                                         6.84
ARIN Region origin ASes announcing only one prefix:                4549
ARIN Region transit ASes present in the Internet Routing Table:    1089
Average ARIN Region AS path length visible:                         3.4
    Max ARIN Region AS path length visible:                          14
Number of ARIN addresses announced to Internet:               346033280
    Equivalent to 20 /8s, 160 /16s and 12 /24s
    Percentage of available ARIN address space announced:          76.4

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:                     48930
    Total RIPE prefixes after maximum aggregation:                31225
    RIPE Deaggregation factor:                                     1.57
Prefixes being announced from the RIPE address blocks:            45305
    Unique aggregates announced from the RIPE address blocks:     29867
RIPE Region origin ASes present in the Internet Routing Table:    10244
    RIPE Prefixes per ASN:                                         4.42
RIPE Region origin ASes announcing only one prefix:                5467
RIPE Region transit ASes present in the Internet Routing Table:    1623
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          22
Number of RIPE addresses announced to Internet:               329301120
    Equivalent to 19 /8s, 160 /16s and 188 /24s
    Percentage of available RIPE address space announced:          75.5

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
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:                   17229
    Total LACNIC prefixes after maximum aggregation:               4516
    LACNIC Deaggregation factor:                                   3.82
Prefixes being announced from the LACNIC address blocks:          15244
    Unique aggregates announced from the LACNIC address blocks:    8195
LACNIC Region origin ASes present in the Internet Routing Table:    867
    LACNIC Prefixes per ASN:                                      17.58
LACNIC Region origin ASes announcing only one prefix:               275
LACNIC Region transit ASes present in the Internet Routing Table:   148
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        19
Number of LACNIC addresses announced to Internet:              43546624
    Equivalent to 2 /8s, 152 /16s and 120 /24s
    Percentage of available LACNIC address space announced:        64.9

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:                   2699
    Total AfriNIC prefixes after maximum aggregation:              1024
    AfriNIC Deaggregation factor:                                  2.64
Prefixes being announced from the AfriNIC address blocks:          2291
    Unique aggregates announced from the AfriNIC address blocks:   1364
AfriNIC Region origin ASes present in the Internet Routing Table:   205
    AfriNIC Prefixes per ASN:                                     11.18
AfriNIC Region origin ASes announcing only one prefix:               70
AfriNIC Region transit ASes present in the Internet Routing Table:   35
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       14
Number of AfriNIC addresses announced to Internet:              7460096
    Equivalent to 0 /8s, 113 /16s and 213 /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     1423        383          67   Videsh Sanchar Nigam Ltd. Aut
 9583     1126         81         413   Sify Limited
 4134     1077      11403         294   CHINANET-BACKBONE
 9498     1002        533          66   BHARTI BT INTERNET LTD.
17488      816         53          61   Hathway IP Over Cable Interne
 4766      809       5441         321   Korea Telecom (KIX)
23577      791         34         685   Korea Telecom (ATM-MPLS)
 7545      731        159         118   TPG Internet Pty Ltd
18101      600        119          50   Reliance Infocom Ltd Internet
 4802      576        131         149   Wantree Development
 4812      548        974          94   China Telecom (Shanghai)
 1221      539       1950         420   Telstra Pty Ltd
 9829      530       1312           9   BSNL National Internet Backbo
 4668      517         68          10   LG-EDS Systems Inc.
17676      502      10903          63   Softbank BB Corp.
 4808      490        783         119   CNCGROUP IP network: China169
 9443      467        122          77   Primus Telecommunications
 7474      381        218         268   SingTel Optus Pty Ltd
17974      362        130          13   PT TELEKOMUNIKASI INDONESIA
 4837      357       5136         169   chinanet IDC center beijing n

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1474       6106         987   AT&T WorldNet Services
 4323     1400        991         366   Time Warner Telecom
 2386     1220        635         732   AT&T Data Communications Serv
11492     1152        113          17   Cable One 
 6478     1131        328         137   AT&T Worldnet Services 
 6197     1030        718         508   BellSouth Network Solutions, 
18566     1028        288           9   Covad Communications 
  174      965       6779         844   Cogent Communications
 7011      944        287         559   Citizens Utilities 
  701      873       6573         681   UUNET Technologies, Inc. 
20115      830        762         441   Charter Communications 
 1239      800       2720         564   Sprint 
19262      780       2766         189   Verizon Global Networks 
22773      777       2149          52   Cox Communications, Inc.
  209      740       3818         584   Qwest 
 3356      674      10820         373   Level 3 Communications, LLC 
 5668      655        176          23   CenturyTel Internet Holdings,
 6517      586        165          36   Yipes Communications, Inc. 
  852      581       1095         360   Telus Advanced Communications
15270      580        160          38   PaeTec.net -a division of Pae

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      491       1921         393   UUNET - Commercial IP service
24863      371         58          37   LINKdotNET AS number
 9116      353        168          27   Goldenlines main autonomous s
 3301      317       1457         294   TeliaNet Sweden
 3320      313       6035         260   Deutsche Telekom AG
 8551      296        284          38   Bezeq International
 6746      290        131         266   Dynamic Network Technologies,
  680      269       2045         257   DFN-IP service G-WiN
 8866      265         62          22   Bulgarian Telecommunication C
 8708      263        421         242   Romania Data Systems S.A.
 3215      262       2472          99   France Telecom Transpac
 8220      255        444         238   COLT Telecommunications
 3352      230       1882          40   Ibernet, Internet Access Netw
 5089      224       1658          54   NTL Group Limited
 3269      223       2839          73   TELECOM ITALIA
 9121      217       1442          25   TTnet Autonomous System
 3300      197        172          96   AUCS Communications Services 
 3292      196       1380         176   TDC Tele Danmark
 1257      194       1195         171   SWIPnet Swedish IP Network
12479      194        578           6   Uni2 Autonomous System

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8151     1018       2157         211   UniNet S.A. de C.V. 
11830      514        299           9   Instituto Costarricense de El
16814      426         26           9   NSS, S.A. 
11172      378        114          60   Servicios Alestra S.A de C.V 
 7303      352        166          50   Telecom Argentina Stet-France
14522      345         29           8   SatNet S.A. 
 6471      337         75          33   ENTEL CHILE S.A. 
22047      317        246          13   VTR PUNTO NET S.A. 
14117      287         19          15   Telefonica del Sur S.A. 
11664      278         30          13   Keytech SA 
10481      261        104           9   Prima S.A. 
10620      238         66          24   TVCABLE BOGOTA 
11556      237        128           4   Cable-Wireless Panama 
 6147      229        178          24   Telefonica Del Peru 
 6503      206        171          83   AVANTEL, S.A. 
23216      196         16          44   RAMtelecom Telecomunicaciones
20299      178         25          30   NEWCOM AMERICAS 
 8163      177         11           6   METROTEL REDES S.A. 
19169      176         12          19   Telconet 
28573      175        272          18   NET Servicos de Comunicao S.A

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3741      277        869         225   The Internet Solution 
 8452      220        188           7   TEDATA
 6713      142        135          11   Itissalat Al-MAGHRIB
 2018      140        299         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       73         24          15   MAURITIUS TELECOM
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 
12455       37          6           3   Jambonet Autonomous system
 8524       31          2          10   AUCEGYPT Autonomous System
10798       27         16           1   Standard Bank of South Africa
29975       26         10           9   Vodacom
15804       24          2           1   AS of The Way Out Internet So

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

  ASN   No of nets  Net Savings Description
 4755      1423        1356      Videsh Sanchar Nigam Ltd. Aut
11492      1152        1135      Cable One 
 4323      1400        1034      Time Warner Telecom
18566      1028        1019      Covad Communications 
 6478      1131         994      AT&T Worldnet Services 
 9498      1002         936      BHARTI BT INTERNET LTD.
 8151      1018         807      UniNet S.A. de C.V. 
 4134      1077         783      CHINANET-BACKBONE
17488       816         755      Hathway IP Over Cable Interne
22773       777         725      Cox Communications, Inc.
 9583      1126         713      Sify Limited
 5668       655         632      CenturyTel Internet Holdings,
 7545       731         613      TPG Internet Pty Ltd
19262       780         591      Verizon Global Networks 
18101       600         550      Reliance Infocom Ltd Internet
 6517       586         550      Yipes Communications, Inc. 
15270       580         542      PaeTec.net -a division of Pae
 6197      1030         522      BellSouth Network Solutions, 
 9829       530         521      BSNL National Internet Backbo
19916       568         517      OLM LLC 

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

Bad AS  Designation  Network              Transit AS  Description
64250   RESERVED      59.144.44.0/24        9498       BHARTI BT INTERNET L
64250   RESERVED      122.167.64.0/19       9498       BHARTI BT INTERNET L
64250   RESERVED      122.167.96.0/20       9498       BHARTI BT INTERNET L
64250   RESERVED      122.167.112.0/21      9498       BHARTI BT INTERNET L
64250   RESERVED      122.167.176.0/21      9498       BHARTI BT INTERNET L
64250   RESERVED      122.167.188.0/22      9498       BHARTI BT INTERNET L
64250   RESERVED      122.167.192.0/22      9498       BHARTI BT INTERNET L
64250   RESERVED      122.167.196.0/22      9498       BHARTI BT INTERNET L
64250   RESERVED      122.167.200.0/22      9498       BHARTI BT INTERNET L
64250   RESERVED      122.167.204.0/22      9498       BHARTI BT INTERNET L
64250   RESERVED      122.167.208.0/22      9498       BHARTI BT INTERNET L
64250   RESERVED      122.167.212.0/22      9498       BHARTI BT INTERNET L
64250   RESERVED      122.167.216.0/22      9498       BHARTI BT INTERNET L
64250   RESERVED      122.167.220.0/22      9498       BHARTI BT INTERNET L
64250   RESERVED      122.167.240.0/23      9498       BHARTI BT INTERNET L
64250   RESERVED      122.167.242.0/23      9498       BHARTI BT INTERNET L
64250   RESERVED      122.167.244.0/23      9498       BHARTI BT INTERNET L
64250   RESERVED      122.167.246.0/23      9498       BHARTI BT INTERNET L
64520   PRIVATE       172.11.12.0/24        1803       SPRINT 
65501   PRIVATE       202.153.21.0/24      23666       PT Sistelindo Mitral
24409   UNALLOCATED   203.119.29.0/24       9808       Guangdong Mobile Com

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

Network            Origin AS  Description
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
172.11.12.0/24       64520     PRIVATE ASN
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       /10:16      /11:37      /12:136     
/13:265     /14:474     /15:928     /16:9621    /17:4094    /18:6661    
/19:14149   /20:16608   /21:15124   /22:19589   /23:20400   /24:122734  
/25:766     /26:1028    /27:548     /28:113     /29:5       /30:0       
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
11492     1144          1152      Cable One 
 6478     1130          1131      AT&T Worldnet Services 
18566     1010          1028      Covad Communications 
 9583      968          1126      Sify Limited
 2386      911          1220      AT&T Data Communications Serv
 7011      834           944      Citizens Utilities 
 7018      819          1474      AT&T WorldNet Services
 4755      796          1423      Videsh Sanchar Nigam Ltd. Aut
 6197      783          1030      BellSouth Network Solutions, 
23577      782           791      Korea Telecom (ATM-MPLS)
 9498      681          1002      BHARTI BT INTERNET LTD.
17488      639           816      Hathway IP Over Cable Interne
 4766      607           809      Korea Telecom (KIX)
 4323      596          1400      Time Warner Telecom
19916      563           568      OLM LLC 
 6517      551           586      Yipes Communications, Inc. 
15270      544           580      PaeTec.net -a division of Pae
 5668      521           655      CenturyTel Internet Holdings,
 4668      507           517      LG-EDS Systems Inc.
18101      503           600      Reliance Infocom Ltd Internet

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

   4:8         8:83       12:1791     13:1        15:20       16:3      
  17:3        18:13       20:36       24:974      25:1        32:60     
  33:3        38:349      40:61       41:320      44:2        47:4      
  52:4        55:3        56:3        57:23       58:473      59:409    
  60:370      61:989      62:934      63:2001     64:3253     65:2372   
  66:3518     67:819      68:676      69:1976     70:454      71:107    
  72:1419     73:5        74:677      75:260      76:133      77:378    
  78:196      80:816      81:841      82:570      83:364      84:632    
  85:820      86:346      87:560      88:287      89:994      90:38     
  91:562      97:6        98:2       101:1       116:373     117:162    
 118:21      121:302     122:610     123:184     124:677     125:1008   
 128:272     129:212     130:137     131:364     132:60      133:9      
 134:198     135:33      136:188     137:81      138:156     139:74     
 140:513     141:174     142:398     143:272     144:313     145:47     
 146:332     147:128     148:485     149:165     150:111     151:157    
 152:89      153:118     154:11      155:255     156:162     157:218    
 158:160     159:175     160:135     161:100     162:173     163:182    
 164:487     165:396     166:287     167:302     168:503     169:123    
 170:387     171:22      172:3       189:74      190:1168    192:5711   
 193:3964    194:3196    195:2305    196:965     198:3821    199:3216   
 200:5314    201:1222    202:7368    203:7873    204:3930    205:1996   
 206:2430    207:2847    208:2867    209:3472    210:2473    211:1083   
 212:1299    213:1488    214:424     215:45      216:4079    217:1193   
 218:317     219:382     220:1008    221:414     222:263    

End of report