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Weekly Routing Table Report

  • From: Routing Analysis Role Account
  • Date: Fri Dec 14 13:07:35 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 Dec, 2007

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

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

BGP routing table entries examined:                              240735
    Prefixes after maximum aggregation:                          123500
    Deaggregation factor:                                          1.95
    Unique aggregates announced to Internet:                     117441
Total ASes present in the Internet Routing Table:                 26879
    Prefixes per ASN:                                              8.96
Origin-only ASes present in the Internet Routing Table:           23383
Origin ASes announcing only one prefix:                           11388
Transit ASes present in the Internet Routing Table:                3496
Transit-only ASes present in the Internet Routing Table:             74
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)                               17
Prefixes from unregistered ASNs in the Routing Table:                 8
    Unregistered ASNs in the Routing Table:                           5
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:             14
Number of addresses announced to Internet:                   1796808672
    Equivalent to 107 /8s, 25 /16s and 31 /24s
    Percentage of available address space announced:               48.5
    Percentage of allocated address space announced:               62.0
    Percentage of available address space allocated:               78.2
Total number of prefixes smaller than registry allocations:      112821

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

Prefixes being announced by APNIC Region ASes:                    56050
    Total APNIC prefixes after maximum aggregation:               21429
    APNIC Deaggregation factor:                                    2.62
Prefixes being announced from the APNIC address blocks:           52923
    Unique aggregates announced from the APNIC address blocks:    23480
APNIC Region origin ASes present in the Internet Routing Table:    3108
    APNIC Prefixes per ASN:                                       17.03
APNIC Region origin ASes announcing only one prefix:                815
APNIC Region transit ASes present in the Internet Routing Table:    484
Average APNIC Region AS path length visible:                        3.6
    Max APNIC Region AS path length visible:                         17
Number of APNIC addresses announced to Internet:              323392416
    Equivalent to 19 /8s, 70 /16s and 147 /24s
    Percentage of available APNIC address space announced:         74.0

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, 114/7, 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:                    112613
    Total ARIN prefixes after maximum aggregation:                63992
    ARIN Deaggregation factor:                                     1.76
Prefixes being announced from the ARIN address blocks:            83054
    Unique aggregates announced from the ARIN address blocks:     33134
ARIN Region origin ASes present in the Internet Routing Table:    11981
    ARIN Prefixes per ASN:                                         6.93
ARIN Region origin ASes announcing only one prefix:                4602
ARIN Region transit ASes present in the Internet Routing Table:    1137
Average ARIN Region AS path length visible:                         3.4
    Max ARIN Region AS path length visible:                          15
Number of ARIN addresses announced to Internet:               355260288
    Equivalent to 21 /8s, 44 /16s and 215 /24s
    Percentage of available ARIN address space announced:          78.4

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:                     50670
    Total RIPE prefixes after maximum aggregation:                32386
    RIPE Deaggregation factor:                                     1.56
Prefixes being announced from the RIPE address blocks:            47531
    Unique aggregates announced from the RIPE address blocks:     31359
RIPE Region origin ASes present in the Internet Routing Table:    10616
    RIPE Prefixes per ASN:                                         4.48
RIPE Region origin ASes announcing only one prefix:                5617
RIPE Region transit ASes present in the Internet Routing Table:    1650
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          20
Number of RIPE addresses announced to Internet:               339078912
    Equivalent to 20 /8s, 53 /16s and 239 /24s
    Percentage of available RIPE address space announced:          77.7

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:                   18092
    Total LACNIC prefixes after maximum aggregation:               4588
    LACNIC Deaggregation factor:                                   3.94
Prefixes being announced from the LACNIC address blocks:          16072
    Unique aggregates announced from the LACNIC address blocks:    8927
LACNIC Region origin ASes present in the Internet Routing Table:    888
    LACNIC Prefixes per ASN:                                      18.10
LACNIC Region origin ASes announcing only one prefix:               289
LACNIC Region transit ASes present in the Internet Routing Table:   153
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        19
Number of LACNIC addresses announced to Internet:              47070208
    Equivalent to 2 /8s, 206 /16s and 60 /24s
    Percentage of available LACNIC address space announced:        46.8

LACNIC AS Blocks       26592-26623, 27648-28671, plus ERX transfers
LACNIC Address Blocks  186/7, 189/8, 190/8, 200/7

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

Prefixes being announced by AfriNIC Region ASes:                   3293
    Total AfriNIC prefixes after maximum aggregation:              1089
    AfriNIC Deaggregation factor:                                  3.02
Prefixes being announced from the AfriNIC address blocks:          2465
    Unique aggregates announced from the AfriNIC address blocks:   1451
AfriNIC Region origin ASes present in the Internet Routing Table:   211
    AfriNIC Prefixes per ASN:                                     11.68
AfriNIC Region origin ASes announcing only one prefix:               65
AfriNIC Region transit ASes present in the Internet Routing Table:   38
Average AfriNIC Region AS path length visible:                      3.6
    Max AfriNIC Region AS path length visible:                       14
Number of AfriNIC addresses announced to Internet:              8242944
    Equivalent to 0 /8s, 125 /16s and 199 /24s
    Percentage of available AfriNIC address space announced:       24.6

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     1494        383          71   Videsh Sanchar Nigam Ltd. Aut
 9583     1094         81         431   Sify Limited
 9498     1056        549          63   BHARTI BT INTERNET LTD.
 4134      977      11601         305   CHINANET-BACKBONE
17488      918         59          80   Hathway IP Over Cable Interne
 4766      818       5475         330   Korea Telecom (KIX)
23577      802         34         685   Korea Telecom (ATM-MPLS)
 7545      660        148         107   TPG Internet Pty Ltd
18101      610        120          57   Reliance Infocom Ltd Internet
 9829      598        448          10   BSNL National Internet Backbo
 1221      545       1952         421   Telstra Pty Ltd
 4812      529        874          82   China Telecom (Shanghai)
 4808      522        798         121   CNCGROUP IP network: China169
 4668      519         68          10   LG-EDS Systems Inc.
17676      504      10919          64   Softbank BB Corp.
 4802      470        128         149   Wantree Development
 9443      439        121          69   Primus Telecommunications
17974      408        145          17   PT TELEKOMUNIKASI INDONESIA
 7474      385        202         271   SingTel Optus Pty Ltd
 4837      362       5072         176   chinanet IDC center beijing n

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1489       6106        1009   AT&T WorldNet Services
 4323     1386       1015         366   Time Warner Telecom
 2386     1316        635         795   AT&T Data Communications Serv
11492     1186        125          36   Cable One 
 6478     1084        328         178   AT&T Worldnet Services 
18566     1034        288           9   Covad Communications 
 6197     1032        721         510   BellSouth Network Solutions, 
 7011      996        295         582   Citizens Utilities 
  174      971       6823         822   Cogent Communications
  701      893       6546         699   UUNET Technologies, Inc. 
19262      858       3102         173   Verizon Global Networks 
20115      843        773         455   Charter Communications 
 3356      837      10904         414   Level 3 Communications, LLC 
22773      831       2138          58   Cox Communications, Inc.
 1239      790       2673         549   Sprint 
  209      742       3786         583   Qwest 
 5668      665        176          18   CenturyTel Internet Holdings,
 6517      615        163          34   Yipes Communications, Inc. 
15270      588        160          48   PaeTec.net -a division of Pae
  852      585       1126         358   Telus Advanced Communications

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      466       1917         379   UUNET - Commercial IP service
 3292      406       1653         366   TDC Tele Danmark
 9116      335        184          28   Goldenlines main autonomous s
 3301      322       1458         296   TeliaNet Sweden
 3320      315       6019         261   Deutsche Telekom AG
 8452      284        188           7   TEDATA
 8866      280         78          24   Bulgarian Telecommunication C
 8551      276        266          40   Bezeq International
 6746      273        129         252   Dynamic Network Technologies,
 8708      272        421         244   Romania Data Systems S.A.
 3215      270       2583          92   France Telecom Transpac
  680      268       2045         254   DFN-IP service G-WiN
 9155      254         43          11   QualityNet AS number
 8220      242        423         228   COLT Telecommunications
 3352      238       1948          40   Ibernet, Internet Access Netw
 3269      230       3037          68   TELECOM ITALIA
 5462      229        666          27   Telewest Broadband
 3300      214        220         102   AUCS Communications Services 
 9121      213       1444          26   TTnet Autonomous System
 1257      195       1195         178   SWIPnet Swedish IP Network

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8151     1157       2408         216   UniNet S.A. de C.V. 
11830      539        299           9   Instituto Costarricense de El
16814      427         27          10   NSS, S.A. 
 7303      417        202          59   Telecom Argentina Stet-France
11172      379        115          62   Servicios Alestra S.A de C.V 
14522      371         34           8   SatNet S.A. 
 6471      363         85          37   ENTEL CHILE S.A. 
22047      322        254          13   VTR PUNTO NET S.A. 
10481      301        120          10   Prima S.A. 
10620      293         80          20   TVCABLE BOGOTA 
14117      286         19          15   Telefonica del Sur S.A. 
 6147      256        214          21   Telefonica Del Peru 
 7738      237        602          25   Telecomunicacoes da Bahia S.A
11556      235        128           3   Cable-Wireless Panama 
23216      223         17          47   RAMtelecom Telecomunicaciones
20299      221         33          29   NEWCOM AMERICAS 
 6503      220        187          86   AVANTEL, S.A. 
28573      219        321          29   NET Servicos de Comunicao S.A
19169      190         12          20   Telconet 
21826      187         33          48   INTERCABLE 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
24863      400         60          36   LINKdotNET AS number
 3741      278        869         226   The Internet Solution 
20858      201         34           3   EgyNet
 6713      145        135          11   Itissalat Al-MAGHRIB
 2018      143        268         115   Tertiary Education Network 
 5536      124          8          10   Internet Egypt Network
33783      124          8          15   EEPAD TISP TELECOM & INTERNET
33776      100          6           3   Starcomms Nigeria Limited
24835       88         48           6   RAYA Telecom - Egypt
15475       84         84           4   Nile Online
23889       79         24          16   MAURITIUS TELECOM
 2905       77        174          73   The Internetworking Company o
29571       77         13           7   Ci Telecom Autonomous system 
20484       65          5           6   Yalla Online Autonomous Syste
15706       57         12           4   Sudatel Internet Exchange Aut
33774       51         37          28   AS Number for Telecom Algeria
 5713       49        455          39   Telkom SA Ltd 
 8524       32          2          10   AUCEGYPT Autonomous System
12455       32          6           3   Jambonet Autonomous system
21152       32          2           1   AS for the uplinks of Soficom

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

  ASN   No of nets  Net Savings Description
11492      1186        1150      Cable One 
18566      1034        1025      Covad Communications 
 4323      1386        1020      Time Warner Telecom
 9498      1056         993      BHARTI BT INTERNET LTD.
 8151      1157         941      UniNet S.A. de C.V. 
 6478      1084         906      AT&T Worldnet Services 
17488       918         838      Hathway IP Over Cable Interne
22773       831         773      Cox Communications, Inc.
19262       858         685      Verizon Global Networks 
 4134       977         672      CHINANET-BACKBONE
 9583      1094         663      Sify Limited
 5668       665         647      CenturyTel Internet Holdings,
 9829       598         588      BSNL National Internet Backbo
 6517       615         581      Yipes Communications, Inc. 
 7545       660         553      TPG Internet Pty Ltd
18101       610         553      Reliance Infocom Ltd Internet
15270       588         540      PaeTec.net -a division of Pae
11830       539         530      Instituto Costarricense de El
 6197      1032         522      BellSouth Network Solutions, 
19916       569         522      OLM LLC 

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

Bad AS  Designation  Network              Transit AS  Description
65000   PRIVATE       78.108.160.0/24      39010       TerraNet sal
65068   PRIVATE       79.171.184.0/21      43895       *
65201   PRIVATE       202.112.45.0/24       4538       China Education and 
65201   PRIVATE       202.112.49.0/24       4538       China Education and 
65201   PRIVATE       202.112.50.0/24       4538       China Education and 
65201   PRIVATE       202.112.54.0/24       4538       China Education and 
65201   PRIVATE       202.112.57.0/24       4538       China Education and 
65201   PRIVATE       202.112.58.0/24       4538       China Education and 

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

Network            Origin AS  Description
31.31.31.0/24         9730     The Best ISP to go Multimedia
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
172.14.254.0/24      20312     CNTI-REACCIUN "Centro Naciona
172.15.254.0/24      20312     CNTI-REACCIUN "Centro Naciona
172.33.1.0/24         7018     AT&T WorldNet Services
173.173.173.0/24      9730     The Best ISP to go Multimedia
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        /8:18       /9:9       /10:15      /11:40      /12:135     
/13:271     /14:487     /15:962     /16:9745    /17:4184    /18:6860    
/19:14868   /20:16967   /21:16053   /22:20148   /23:21122   /24:126325  
/25:832     /26:1033    /27:551     /28:96      /29:5       /30:0       
/31:0       /32:9       

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

  ASN   No of nets  Total ann.   Description
11492     1177          1186      Cable One 
 6478     1083          1084      AT&T Worldnet Services 
18566     1016          1034      Covad Communications 
 2386     1007          1316      AT&T Data Communications Serv
 9583      939          1094      Sify Limited
 7011      881           996      Citizens Utilities 
 4755      860          1494      Videsh Sanchar Nigam Ltd. Aut
 7018      818          1489      AT&T WorldNet Services
23577      793           802      Korea Telecom (ATM-MPLS)
 6197      774          1032      BellSouth Network Solutions, 
 9498      742          1056      BHARTI BT INTERNET LTD.
17488      733           918      Hathway IP Over Cable Interne
 4766      605           818      Korea Telecom (KIX)
 4323      591          1386      Time Warner Telecom
 6517      570           615      Yipes Communications, Inc. 
19916      564           569      OLM LLC 
15270      551           588      PaeTec.net -a division of Pae
 5668      524           665      CenturyTel Internet Holdings,
 4668      509           519      LG-EDS Systems Inc.
18101      504           610      Reliance Infocom Ltd Internet

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

   4:9         8:92       12:1897     13:2        15:21       16:3      
  17:6        18:14       20:35       24:1016     25:1        31:1      
  32:61       33:4        38:368      40:69       41:422      44:2      
  47:8        52:3        55:3        56:3        57:21       58:498    
  59:412      60:389      61:984      62:1062     63:1980     64:3305   
  65:2364     66:3611     67:997      68:645      69:2105     70:466    
  71:106      72:1454     73:7        74:795      75:263      76:163    
  77:495      78:384      79:46       80:903      81:787      82:565    
  83:368      84:609      85:827      86:366      87:611      88:290    
  89:1058     90:39       91:867      92:45       96:2        97:7      
  98:21      114:1       115:1       116:475     117:222     118:54     
 119:4       121:365     122:656     123:229     124:755     125:1059   
 128:309     129:181     130:136     131:375     132:68      133:9      
 134:194     135:33      136:195     137:82      138:148     139:72     
 140:513     141:127     142:374     143:263     144:332     145:51     
 146:330     147:128     148:483     149:185     150:171     151:124    
 152:101     153:122     154:11      155:277     156:199     157:226    
 158:165     159:206     160:189     161:100     162:197     163:186    
 164:560     165:410     166:288     167:311     168:550     169:128    
 170:421     171:29      172:5       173:1       189:122     190:1298   
 192:5729    193:4052    194:3221    195:2328    196:938     198:3812   
 199:3227    200:5214    201:1287    202:7481    203:7852    204:3964   
 205:2024    206:2420    207:2759    208:3027    209:3544    210:2516   
 211:1112    212:1251    213:1597    214:433     215:42      216:4082   
 217:1210    218:331     219:403     220:1009    221:406     222:291    


End of report