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Weekly Routing Table Report

  • From: Routing Analysis Role Account
  • Date: Fri Jan 11 13:09:50 2008

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 12 Jan, 2008

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

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

BGP routing table entries examined:                              242944
    Prefixes after maximum aggregation:                          124170
    Deaggregation factor:                                          1.96
    Unique aggregates announced to Internet:                     118684
Total ASes present in the Internet Routing Table:                 27064
    Prefixes per ASN:                                              8.98
Origin-only ASes present in the Internet Routing Table:           23563
Origin ASes announcing only one prefix:                           11452
Transit ASes present in the Internet Routing Table:                3501
Transit-only ASes present in the Internet Routing Table:             77
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      19
    Max AS path prepend of ASN (29642)                               15
Prefixes from unregistered ASNs in the Routing Table:                12
    Unregistered ASNs in the Routing Table:                           8
Prefixes from 32-bit ASNs in the Routing Table:                       9
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:             12
Number of addresses announced to Internet:                   1799965984
    Equivalent to 107 /8s, 73 /16s and 77 /24s
    Percentage of available address space announced:               48.6
    Percentage of allocated address space announced:               62.1
    Percentage of available address space allocated:               78.2
Total number of prefixes smaller than registry allocations:      114374

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

Prefixes being announced by APNIC Region ASes:                    55911
    Total APNIC prefixes after maximum aggregation:               21003
    APNIC Deaggregation factor:                                    2.66
Prefixes being announced from the APNIC address blocks:           53426
    Unique aggregates announced from the APNIC address blocks:    23847
APNIC Region origin ASes present in the Internet Routing Table:    3091
    APNIC Prefixes per ASN:                                       17.28
APNIC Region origin ASes announcing only one prefix:                806
APNIC Region transit ASes present in the Internet Routing Table:    461
Average APNIC Region AS path length visible:                        3.6
    Max APNIC Region AS path length visible:                         14
Number of APNIC addresses announced to Internet:              325161632
    Equivalent to 19 /8s, 97 /16s and 146 /24s
    Percentage of available APNIC address space announced:         74.4

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:                    114433
    Total ARIN prefixes after maximum aggregation:                65214
    ARIN Deaggregation factor:                                     1.75
Prefixes being announced from the ARIN address blocks:            83426
    Unique aggregates announced from the ARIN address blocks:     33233
ARIN Region origin ASes present in the Internet Routing Table:    12059
    ARIN Prefixes per ASN:                                         6.92
ARIN Region origin ASes announcing only one prefix:                4646
ARIN Region transit ASes present in the Internet Routing Table:    1152
Average ARIN Region AS path length visible:                         3.4
    Max ARIN Region AS path length visible:                          15
Number of ARIN addresses announced to Internet:               355588544
    Equivalent to 21 /8s, 49 /16s and 217 /24s
    Percentage of available ARIN address space announced:          78.5

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:                     50815
    Total RIPE prefixes after maximum aggregation:                32203
    RIPE Deaggregation factor:                                     1.58
Prefixes being announced from the RIPE address blocks:            48137
    Unique aggregates announced from the RIPE address blocks:     31950
RIPE Region origin ASes present in the Internet Routing Table:    10722
    RIPE Prefixes per ASN:                                         4.49
RIPE Region origin ASes announcing only one prefix:                5645
RIPE Region transit ASes present in the Internet Routing Table:    1666
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          18
Number of RIPE addresses announced to Internet:               340099072
    Equivalent to 20 /8s, 69 /16s and 128 /24s
    Percentage of available RIPE address space announced:          78.0

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:                   18404
    Total LACNIC prefixes after maximum aggregation:               4626
    LACNIC Deaggregation factor:                                   3.98
Prefixes being announced from the LACNIC address blocks:          16553
    Unique aggregates announced from the LACNIC address blocks:    9040
LACNIC Region origin ASes present in the Internet Routing Table:    897
    LACNIC Prefixes per ASN:                                      18.45
LACNIC Region origin ASes announcing only one prefix:               287
LACNIC Region transit ASes present in the Internet Routing Table:   153
Average LACNIC Region AS path length visible:                       3.9
    Max LACNIC Region AS path length visible:                        19
Number of LACNIC addresses announced to Internet:              47242240
    Equivalent to 2 /8s, 208 /16s and 220 /24s
    Percentage of available LACNIC address space announced:        46.9

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:                   3359
    Total AfriNIC prefixes after maximum aggregation:              1106
    AfriNIC Deaggregation factor:                                  3.04
Prefixes being announced from the AfriNIC address blocks:          2504
    Unique aggregates announced from the AfriNIC address blocks:   1455
AfriNIC Region origin ASes present in the Internet Routing Table:   217
    AfriNIC Prefixes per ASN:                                     11.54
AfriNIC Region origin ASes announcing only one prefix:               68
AfriNIC Region transit ASes present in the Internet Routing Table:   39
Average AfriNIC Region AS path length visible:                      3.6
    Max AfriNIC Region AS path length visible:                       14
Number of AfriNIC addresses announced to Internet:              8219136
    Equivalent to 0 /8s, 125 /16s and 106 /24s
    Percentage of available AfriNIC address space announced:       24.5

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     1518        383          71   Videsh Sanchar Nigam Ltd. Aut
 9583     1112         82         436   Sify Limited
 9498     1094        549          61   BHARTI BT INTERNET LTD.
17488      960         62          87   Hathway IP Over Cable Interne
 4134      858      11593         305   CHINANET-BACKBONE
 4766      834       5494         339   Korea Telecom (KIX)
23577      815         34         693   Korea Telecom (ATM-MPLS)
18101      609        121          60   Reliance Infocom Ltd Internet
 4780      591        308          43   Digital United Inc.
 9829      590        449          11   BSNL National Internet Backbo
 1221      545       1952         421   Telstra Pty Ltd
 4812      535        938          83   China Telecom (Shanghai)
 4808      530        821         125   CNCGROUP IP network: China169
 4668      521         68          10   LG-EDS Systems Inc.
17676      505      10919          64   Softbank BB Corp.
 7545      486        146          89   TPG Internet Pty Ltd
 4802      471        128         152   Wantree Development
 9443      434        121          69   Primus Telecommunications
17974      399        145          17   PT TELEKOMUNIKASI INDONESIA
 7474      386        202         272   SingTel Optus Pty Ltd

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1472       6073         996   AT&T WorldNet Services
 4323     1388       1011         361   Time Warner Telecom
 2386     1355        668         824   AT&T Data Communications Serv
11492     1210        134          16   Cable One 
 6478     1095        330         135   AT&T Worldnet Services 
18566     1039        296          10   Covad Communications 
 7011     1003        296         589   Citizens Utilities 
  174      969       6832         812   Cogent Communications
 6197      968        697         502   BellSouth Network Solutions, 
  701      898       6559         693   UUNET Technologies, Inc. 
19262      863       3156         171   Verizon Global Networks 
20115      862        794         468   Charter Communications 
22773      837       2139          58   Cox Communications, Inc.
 3356      835      10907         412   Level 3 Communications, LLC 
 1239      793       2673         552   Sprint 
  209      751       3912         600   Qwest 
 5668      666        177          19   CenturyTel Internet Holdings,
 6140      608        110         151   ImpSat
 6517      605        151          42   Yipes Communications, Inc. 
  852      600       1134         358   Telus Advanced Communications

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3292      402       1651         367   TDC Tele Danmark
 3301      327       1458         298   TeliaNet Sweden
 3320      317       6019         263   Deutsche Telekom AG
 8452      287        188           7   TEDATA
 8551      278        267          41   Bezeq International
 8866      277         78          24   Bulgarian Telecommunication C
 5462      276        666          27   Telewest Broadband
 6746      272        128         250   Dynamic Network Technologies,
  680      270       2046         255   DFN-IP service G-WiN
 3215      270       2583          92   France Telecom Transpac
 8708      270        420         241   Romania Data Systems S.A.
 8220      242        422         228   COLT Telecommunications
 3352      240       1948          40   Ibernet, Internet Access Netw
 3269      231       3037          68   TELECOM ITALIA
 9155      227         43          10   QualityNet AS number
 3300      211        172         100   AUCS Communications Services 
 9121      209       1444          25   TTnet Autonomous System
29357      199         17           4   WATANIYA TELECOM
 1257      197       1196         180   SWIPnet Swedish IP Network
 9116      196        184          28   Goldenlines main autonomous s

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8151     1149       2390         218   UniNet S.A. de C.V. 
11830      545        299           9   Instituto Costarricense de El
16814      427         27          10   NSS, S.A. 
 7303      418        203          56   Telecom Argentina Stet-France
11172      396        115          62   Servicios Alestra S.A de C.V 
 6471      374         85          37   ENTEL CHILE S.A. 
14117      351         23          16   Telefonica del Sur S.A. 
10620      343         91          25   TVCABLE BOGOTA 
22047      322        254          13   VTR PUNTO NET S.A. 
10481      301        120          10   Prima S.A. 
 6147      255        214          21   Telefonica Del Peru 
 7738      240        602          25   Telecomunicacoes da Bahia S.A
11556      236        128           4   Cable-Wireless Panama 
20299      236         33          29   NEWCOM AMERICAS 
28573      228        322          23   NET Servicos de Comunicao S.A
23216      225         17          47   RAMtelecom Telecomunicaciones
14522      220         36           8   SatNet S.A. 
 6503      215        180          85   AVANTEL, S.A. 
10834      194         76          40   ADVANCE TELECOMUNICACIONES S.
19169      193         12          20   Telconet 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
24863      402         60          36   LINKdotNET AS number
 3741      282        869         226   The Internet Solution 
20858      201         34           3   EgyNet
 6713      145        135          11   Itissalat Al-MAGHRIB
 2018      142        268         114   Tertiary Education Network 
33783      141          9          10   EEPAD TISP TELECOM & INTERNET
 5536      124          8          10   Internet Egypt Network
33776       99          6           7   Starcomms Nigeria Limited
24835       88         48           6   RAYA Telecom - Egypt
15475       85         84           4   Nile Online
 2905       77        174          73   The Internetworking Company o
23889       77         24          16   MAURITIUS TELECOM
29571       77         13           7   Ci Telecom Autonomous system 
20484       71          5           4   Yalla Online Autonomous Syste
15706       57         12           4   Sudatel Internet Exchange Aut
 5713       50        455          40   Telkom SA Ltd 
33774       50         37          28   AS Number for Telecom Algeria
16637       41         21          28   Johnnic e-Ventures 
 8524       33          2           8   AUCEGYPT Autonomous System
12455       32          6           3   Jambonet Autonomous system

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

  ASN   No of nets  Net Savings Description
11492      1210        1194      Cable One 
 9498      1094        1033      BHARTI BT INTERNET LTD.
18566      1039        1029      Covad Communications 
 4323      1388        1027      Time Warner Telecom
 6478      1095         960      AT&T Worldnet Services 
 8151      1149         931      UniNet S.A. de C.V. 
17488       960         873      Hathway IP Over Cable Interne
22773       837         779      Cox Communications, Inc.
19262       863         692      Verizon Global Networks 
 9583      1112         676      Sify Limited
 5668       666         647      CenturyTel Internet Holdings,
 9829       590         579      BSNL National Internet Backbo
 6517       605         563      Yipes Communications, Inc. 
 4134       858         553      CHINANET-BACKBONE
18101       609         549      Reliance Infocom Ltd Internet
 4780       591         548      Digital United Inc.
15270       600         545      PaeTec.net -a division of Pae
11830       545         536      Instituto Costarricense de El
 2386      1355         531      AT&T Data Communications Serv
19916       563         521      OLM LLC 

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

Bad AS  Designation  Network              Transit AS  Description
65101   PRIVATE       89.211.192.0/19      42298       Qatar Telecom
65364   PRIVATE       190.144.163.0/24     14080       FIRSTCOM COLOMBIA 
65389   PRIVATE       190.144.166.0/24     14080       FIRSTCOM COLOMBIA 
65394   PRIVATE       190.144.167.0/24     14080       FIRSTCOM COLOMBIA 
65403   PRIVATE       190.144.168.0/24     14080       FIRSTCOM COLOMBIA 
65375   PRIVATE       190.144.175.0/24     14080       FIRSTCOM COLOMBIA 
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
172.33.1.0/24         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      /12:133     
/13:271     /14:486     /15:969     /16:9735    /17:4210    /18:6947    
/19:14867   /20:17088   /21:16130   /22:20334   /23:21444   /24:127610  
/25:872     /26:1093    /27:557     /28:101     /29:8       /30:1       
/31:0       /32:6       

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

  ASN   No of nets  Total ann.   Description
11492     1200          1210      Cable One 
 6478     1094          1095      AT&T Worldnet Services 
 2386     1049          1355      AT&T Data Communications Serv
18566     1020          1039      Covad Communications 
 9583      957          1112      Sify Limited
 7011      888          1003      Citizens Utilities 
 4755      882          1518      Videsh Sanchar Nigam Ltd. Aut
 7018      808          1472      AT&T WorldNet Services
23577      806           815      Korea Telecom (ATM-MPLS)
17488      775           960      Hathway IP Over Cable Interne
 9498      766          1094      BHARTI BT INTERNET LTD.
 6197      728           968      BellSouth Network Solutions, 
 4766      618           834      Korea Telecom (KIX)
 4323      594          1388      Time Warner Telecom
 6517      568           605      Yipes Communications, Inc. 
15270      560           600      PaeTec.net -a division of Pae
19916      558           563      OLM LLC 
 5668      522           666      CenturyTel Internet Holdings,
 4668      511           521      LG-EDS Systems Inc.
18101      503           609      Reliance Infocom Ltd Internet

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

   4:9         8:97       12:1940     13:2        15:21       16:3      
  17:6        18:14       20:35       24:1009     25:1        31:1      
  32:61       33:4        38:379      40:65       41:439      44:2      
  47:8        52:3        55:3        56:3        57:22       58:504    
  59:413      60:405      61:980      62:1046     63:1981     64:3335   
  65:2364     66:3605     67:1059     68:640      69:2077     70:469    
  71:105      72:1462     73:7        74:785      75:173      76:176    
  77:493      78:434      79:65       80:888      81:786      82:565    
  83:352      84:522      85:926      86:366      87:595      88:289    
  89:1085     90:39       91:898      92:96       93:18       95:1      
  96:2        97:7        98:29      114:1       115:1       116:481    
 117:241     118:63      119:89      121:387     122:668     123:226    
 124:767     125:1062    128:310     129:198     130:125     131:390    
 132:68      133:9       134:188     135:31      136:215     137:85     
 138:149     139:90      140:500     141:131     142:375     143:272    
 144:325     145:51      146:336     147:129     148:481     149:188    
 150:115     151:131     152:95      153:127     154:11      155:278    
 156:196     157:246     158:165     159:212     160:196     161:99     
 162:199     163:190     164:562     165:420     166:291     167:310    
 168:566     169:130     170:427     171:28      172:3       173:1      
 189:140     190:1382    192:5742    193:4061    194:3247    195:2317   
 196:959     198:3803    199:3221    200:5414    201:1295    202:7492   
 203:7906    204:3959    205:2052    206:2424    207:2753    208:3092   
 209:3607    210:2637    211:1118    212:1265    213:1612    214:448    
 215:46      216:4134    217:1236    218:331     219:404     220:1008   
 221:411     222:295    

End of report