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Weekly Routing Table Report

  • From: Routing Analysis Role Account
  • Date: Fri Dec 21 13:10:44 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 22 Dec, 2007

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

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

BGP routing table entries examined:                              241244
    Prefixes after maximum aggregation:                          123670
    Deaggregation factor:                                          1.95
    Unique aggregates announced to Internet:                     117636
Total ASes present in the Internet Routing Table:                 26947
    Prefixes per ASN:                                              8.95
Origin-only ASes present in the Internet Routing Table:           23457
Origin ASes announcing only one prefix:                           11408
Transit ASes present in the Internet Routing Table:                3490
Transit-only ASes present in the Internet Routing Table:             76
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      26
    Max AS path prepend of ASN (29642)                               15
Prefixes from unregistered ASNs in the Routing Table:                 7
    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:             14
Number of addresses announced to Internet:                   1798304160
    Equivalent to 107 /8s, 47 /16s and 241 /24s
    Percentage of available address space announced:               48.5
    Percentage of allocated address space announced:               62.1
    Percentage of available address space allocated:               78.2
Total number of prefixes smaller than registry allocations:      113220

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

Prefixes being announced by APNIC Region ASes:                    56104
    Total APNIC prefixes after maximum aggregation:               21439
    APNIC Deaggregation factor:                                    2.62
Prefixes being announced from the APNIC address blocks:           52967
    Unique aggregates announced from the APNIC address blocks:    23481
APNIC Region origin ASes present in the Internet Routing Table:    3109
    APNIC Prefixes per ASN:                                       17.04
APNIC Region origin ASes announcing only one prefix:                816
APNIC Region transit ASes present in the Internet Routing Table:    480
Average APNIC Region AS path length visible:                        3.6
    Max APNIC Region AS path length visible:                         17
Number of APNIC addresses announced to Internet:              324193696
    Equivalent to 19 /8s, 82 /16s and 205 /24s
    Percentage of available APNIC address space announced:         74.1

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:                    112707
    Total ARIN prefixes after maximum aggregation:                64022
    ARIN Deaggregation factor:                                     1.76
Prefixes being announced from the ARIN address blocks:            83122
    Unique aggregates announced from the ARIN address blocks:     33082
ARIN Region origin ASes present in the Internet Routing Table:    11998
    ARIN Prefixes per ASN:                                         6.93
ARIN Region origin ASes announcing only one prefix:                4613
ARIN Region transit ASes present in the Internet Routing Table:    1135
Average ARIN Region AS path length visible:                         3.4
    Max ARIN Region AS path length visible:                          15
Number of ARIN addresses announced to Internet:               356010176
    Equivalent to 21 /8s, 56 /16s and 72 /24s
    Percentage of available ARIN address space announced:          78.6

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:                     50915
    Total RIPE prefixes after maximum aggregation:                32509
    RIPE Deaggregation factor:                                     1.57
Prefixes being announced from the RIPE address blocks:            47745
    Unique aggregates announced from the RIPE address blocks:     31555
RIPE Region origin ASes present in the Internet Routing Table:    10663
    RIPE Prefixes per ASN:                                         4.48
RIPE Region origin ASes announcing only one prefix:                5629
RIPE Region transit ASes present in the Internet Routing Table:    1651
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          26
Number of RIPE addresses announced to Internet:               339459200
    Equivalent to 20 /8s, 59 /16s and 188 /24s
    Percentage of available RIPE address space announced:          77.8

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:                   18184
    Total LACNIC prefixes after maximum aggregation:               4587
    LACNIC Deaggregation factor:                                   3.96
Prefixes being announced from the LACNIC address blocks:          16169
    Unique aggregates announced from the LACNIC address blocks:    8974
LACNIC Region origin ASes present in the Internet Routing Table:    888
    LACNIC Prefixes per ASN:                                      18.21
LACNIC Region origin ASes announcing only one prefix:               285
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:              47093248
    Equivalent to 2 /8s, 206 /16s and 150 /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:                   3318
    Total AfriNIC prefixes after maximum aggregation:              1097
    AfriNIC Deaggregation factor:                                  3.02
Prefixes being announced from the AfriNIC address blocks:          2482
    Unique aggregates announced from the AfriNIC address blocks:   1451
AfriNIC Region origin ASes present in the Internet Routing Table:   212
    AfriNIC Prefixes per ASN:                                     11.71
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:                      3.8
    Max AfriNIC Region AS path length visible:                       14
Number of AfriNIC addresses announced to Internet:              8212736
    Equivalent to 0 /8s, 125 /16s and 81 /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     1500        383          71   Videsh Sanchar Nigam Ltd. Aut
 9583     1097         81         432   Sify Limited
 9498     1066        549          62   BHARTI BT INTERNET LTD.
 4134      978      11601         305   CHINANET-BACKBONE
17488      921         60          81   Hathway IP Over Cable Interne
 4766      818       5476         331   Korea Telecom (KIX)
23577      808         34         689   Korea Telecom (ATM-MPLS)
18101      610        120          58   Reliance Infocom Ltd Internet
 9829      589        448          10   BSNL National Internet Backbo
 7545      585        147         100   TPG Internet Pty Ltd
 1221      541       1952         417   Telstra Pty Ltd
 4812      529        874          82   China Telecom (Shanghai)
 4808      523        799         121   CNCGROUP IP network: China169
 4668      519         68          10   LG-EDS Systems Inc.
17676      504      10919          64   Softbank BB Corp.
 4802      470        128         151   Wantree Development
 9443      438        121          69   Primus Telecommunications
17974      397        145          17   PT TELEKOMUNIKASI INDONESIA
 7474      387        202         273   SingTel Optus Pty Ltd
 4837      368       5068         177   chinanet IDC center beijing n

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1483       6106        1007   AT&T WorldNet Services
 4323     1392       1015         365   Time Warner Telecom
 2386     1329        636         807   AT&T Data Communications Serv
11492     1194        133          16   Cable One 
 6478     1090        330         161   AT&T Worldnet Services 
18566     1035        288           9   Covad Communications 
 6197     1032        721         510   BellSouth Network Solutions, 
 7011     1007        297         587   Citizens Utilities 
  174      974       6831         824   Cogent Communications
  701      900       6542         706   UUNET Technologies, Inc. 
19262      864       3119         176   Verizon Global Networks 
20115      857        792         465   Charter Communications 
 3356      837      10906         415   Level 3 Communications, LLC 
22773      835       2140          59   Cox Communications, Inc.
 1239      790       2673         550   Sprint 
  209      741       3784         586   Qwest 
 5668      664        176          18   CenturyTel Internet Holdings,
 6517      619        164          36   Yipes Communications, Inc. 
15270      592        160          49   PaeTec.net -a division of Pae
  852      585       1134         359   Telus Advanced Communications

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      462       1900         377   UUNET - Commercial IP service
 3292      407       1654         367   TDC Tele Danmark
 3301      323       1458         297   TeliaNet Sweden
 3320      316       6019         262   Deutsche Telekom AG
 8452      283        188           7   TEDATA
 9116      282        184          28   Goldenlines main autonomous s
 8866      279         78          24   Bulgarian Telecommunication C
 8551      276        266          40   Bezeq International
 6746      272        129         251   Dynamic Network Technologies,
 8708      271        420         243   Romania Data Systems S.A.
 3215      270       2583          92   France Telecom Transpac
  680      268       2045         254   DFN-IP service G-WiN
 9155      256         43          11   QualityNet AS number
 8220      242        423         228   COLT Telecommunications
 3352      238       1948          40   Ibernet, Internet Access Netw
 3269      231       3037          68   TELECOM ITALIA
 5462      229        666          27   Telewest Broadband
 3300      211        172         100   AUCS Communications Services 
 9121      211       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     1147       2391         217   UniNet S.A. de C.V. 
11830      545        299           9   Instituto Costarricense de El
16814      427         27          10   NSS, S.A. 
 7303      419        204          56   Telecom Argentina Stet-France
11172      379        115          62   Servicios Alestra S.A de C.V 
 6471      372         85          37   ENTEL CHILE S.A. 
14522      371         34           8   SatNet S.A. 
22047      322        254          13   VTR PUNTO NET S.A. 
10481      301        120          10   Prima S.A. 
10620      297         81          22   TVCABLE BOGOTA 
14117      286         19          15   Telefonica del Sur S.A. 
 6147      254        214          21   Telefonica Del Peru 
 7738      238        602          25   Telecomunicacoes da Bahia S.A
11556      235        128           3   Cable-Wireless Panama 
28573      228        321          29   NET Servicos de Comunicao S.A
23216      225         17          47   RAMtelecom Telecomunicaciones
20299      221         33          29   NEWCOM AMERICAS 
 6503      216        180          85   AVANTEL, 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      142        268         114   Tertiary Education Network 
33783      126          9          14   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       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       50        455          40   Telkom SA Ltd 
16637       43         21          28   Johnnic e-Ventures 
 8524       32          2          10   AUCEGYPT Autonomous System
12455       32          6           3   Jambonet Autonomous system

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

  ASN   No of nets  Net Savings Description
11492      1194        1178      Cable One 
 4323      1392        1027      Time Warner Telecom
18566      1035        1026      Covad Communications 
 9498      1066        1004      BHARTI BT INTERNET LTD.
 8151      1147         930      UniNet S.A. de C.V. 
 6478      1090         929      AT&T Worldnet Services 
17488       921         840      Hathway IP Over Cable Interne
22773       835         776      Cox Communications, Inc.
19262       864         688      Verizon Global Networks 
 4134       978         673      CHINANET-BACKBONE
 9583      1097         665      Sify Limited
 5668       664         646      CenturyTel Internet Holdings,
 6517       619         583      Yipes Communications, Inc. 
 9829       589         579      BSNL National Internet Backbo
18101       610         552      Reliance Infocom Ltd Internet
15270       592         543      PaeTec.net -a division of Pae
11830       545         536      Instituto Costarricense de El
 2386      1329         522      AT&T Data Communications Serv
 6197      1032         522      BellSouth Network Solutions, 
19916       563         521      OLM LLC 

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

Bad AS  Designation  Network              Transit AS  Description
65068   PRIVATE       79.171.184.0/21      43895       *
65500   PRIVATE       83.142.233.0/24      20516       LuckyNet Israel
65121   PRIVATE       89.25.36.0/24        44243       *
64779   PRIVATE       124.161.4.0/23       38356       BeiJing Sincerity-ti
65201   PRIVATE       202.112.49.0/24       4538       China Education and 
65201   PRIVATE       202.112.50.0/24       4538       China Education and 
65201   PRIVATE       202.112.57.0/24       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     /15:970     /16:9743    /17:4193    /18:6891    
/19:14887   /20:17046   /21:16106   /22:20178   /23:21229   /24:126450  
/25:857     /26:1052    /27:545     /28:104     /29:8       /30:1       
/31:0       /32:9       

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

  ASN   No of nets  Total ann.   Description
11492     1184          1194      Cable One 
 6478     1089          1090      AT&T Worldnet Services 
 2386     1020          1329      AT&T Data Communications Serv
18566     1017          1035      Covad Communications 
 9583      942          1097      Sify Limited
 7011      892          1007      Citizens Utilities 
 4755      865          1500      Videsh Sanchar Nigam Ltd. Aut
 7018      816          1483      AT&T WorldNet Services
23577      799           808      Korea Telecom (ATM-MPLS)
 6197      774          1032      BellSouth Network Solutions, 
 9498      752          1066      BHARTI BT INTERNET LTD.
17488      736           921      Hathway IP Over Cable Interne
 4766      605           818      Korea Telecom (KIX)
 4323      597          1392      Time Warner Telecom
 6517      572           619      Yipes Communications, Inc. 
19916      558           563      OLM LLC 
15270      555           592      PaeTec.net -a division of Pae
 5668      522           664      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         8:94       12:1911     13:2        15:21       16:3      
  17:6        18:14       20:35       24:1019     25:1        31:1      
  32:61       33:4        38:370      40:69       41:435      44:2      
  47:8        52:3        55:3        56:3        57:21       58:498    
  59:411      60:389      61:987      62:1081     63:1979     64:3301   
  65:2348     66:3572     67:1012     68:643      69:2071     70:465    
  71:106      72:1463     73:7        74:803      75:270      76:172    
  77:490      78:392      79:62       80:898      81:789      82:572    
  83:374      84:565      85:829      86:367      87:600      88:291    
  89:1066     90:39       91:891      92:49       96:2        97:7      
  98:25      114:1       115:1       116:445     117:236     118:70     
 119:5       121:368     122:669     123:227     124:756     125:1060   
 128:310     129:182     130:136     131:391     132:68      133:9      
 134:194     135:33      136:188     137:83      138:146     139:71     
 140:514     141:126     142:375     143:260     144:321     145:51     
 146:330     147:128     148:482     149:186     150:167     151:129    
 152:95      153:127     154:11      155:277     156:202     157:244    
 158:165     159:207     160:190     161:99      162:198     163:186    
 164:562     165:409     166:291     167:310     168:545     169:129    
 170:420     171:29      172:5       173:1       189:136     190:1315   
 192:5732    193:4053    194:3246    195:2330    196:942     198:3804   
 199:3193    200:5240    201:1310    202:7466    203:7817    204:3972   
 205:2030    206:2404    207:2721    208:3040    209:3559    210:2534   
 211:1110    212:1264    213:1592    214:435     215:45      216:4092   
 217:1223    218:335     219:402     220:1011    221:404     222:292    


End of report