Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Dec 7 18:03:28 UTC 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 at lists.apnic.net

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

If you have any comments please contact Philip Smith <pfs at cisco.com>.

Routing Table Report   04:00 +10GMT Sat 08 Dec, 2007

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

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

BGP routing table entries examined:                              239737
    Prefixes after maximum aggregation:                          123346
    Deaggregation factor:                                          1.94
    Unique aggregates announced to Internet:                     117087
Total ASes present in the Internet Routing Table:                 26839
    Prefixes per ASN:                                              8.93
Origin-only ASes present in the Internet Routing Table:           23354
Origin ASes announcing only one prefix:                           11384
Transit ASes present in the Internet Routing Table:                3485
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:                                      24
    Max AS path prepend of ASN (13227)                               16
Prefixes from unregistered ASNs in the Routing Table:                 2
    Unregistered ASNs in the Routing Table:                           6
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:                   1794930272
    Equivalent to 106 /8s, 252 /16s and 118 /24s
    Percentage of available address space announced:               48.4
    Percentage of allocated address space announced:               61.9
    Percentage of available address space allocated:               78.2
Total number of prefixes smaller than registry allocations:      112253

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

Prefixes being announced by APNIC Region ASes:                    55725
    Total APNIC prefixes after maximum aggregation:               21333
    APNIC Deaggregation factor:                                    2.61
Prefixes being announced from the APNIC address blocks:           52608
    Unique aggregates announced from the APNIC address blocks:    23404
APNIC Region origin ASes present in the Internet Routing Table:    3091
    APNIC Prefixes per ASN:                                       17.02
APNIC Region origin ASes announcing only one prefix:                815
APNIC Region transit ASes present in the Internet Routing Table:    475
Average APNIC Region AS path length visible:                        3.7
    Max APNIC Region AS path length visible:                         17
Number of APNIC addresses announced to Internet:              322888864
    Equivalent to 19 /8s, 62 /16s and 228 /24s
    Percentage of available APNIC address space announced:         73.8

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:                    112183
    Total ARIN prefixes after maximum aggregation:                63984
    ARIN Deaggregation factor:                                     1.75
Prefixes being announced from the ARIN address blocks:            82732
    Unique aggregates announced from the ARIN address blocks:     32990
ARIN Region origin ASes present in the Internet Routing Table:    11979
    ARIN Prefixes per ASN:                                         6.91
ARIN Region origin ASes announcing only one prefix:                4605
ARIN Region transit ASes present in the Internet Routing Table:    1130
Average ARIN Region AS path length visible:                         3.4
    Max ARIN Region AS path length visible:                          22
Number of ARIN addresses announced to Internet:               354750848
    Equivalent to 21 /8s, 37 /16s and 17 /24s
    Percentage of available ARIN address space announced:          78.3

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:                     50536
    Total RIPE prefixes after maximum aggregation:                32337
    RIPE Deaggregation factor:                                     1.56
Prefixes being announced from the RIPE address blocks:            47362
    Unique aggregates announced from the RIPE address blocks:     31266
RIPE Region origin ASes present in the Internet Routing Table:    10598
    RIPE Prefixes per ASN:                                         4.47
RIPE Region origin ASes announcing only one prefix:                5612
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:                          24
Number of RIPE addresses announced to Internet:               338279296
    Equivalent to 20 /8s, 41 /16s and 187 /24s
    Percentage of available RIPE address space announced:          77.6

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:                   18011
    Total LACNIC prefixes after maximum aggregation:               4588
    LACNIC Deaggregation factor:                                   3.93
Prefixes being announced from the LACNIC address blocks:          15990
    Unique aggregates announced from the LACNIC address blocks:    8885
LACNIC Region origin ASes present in the Internet Routing Table:    884
    LACNIC Prefixes per ASN:                                      18.09
LACNIC Region origin ASes announcing only one prefix:               284
LACNIC Region transit ASes present in the Internet Routing Table:   156
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        19
Number of LACNIC addresses announced to Internet:              47004416
    Equivalent to 2 /8s, 205 /16s and 59 /24s
    Percentage of available LACNIC address space announced:        46.7

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:                   3271
    Total AfriNIC prefixes after maximum aggregation:              1088
    AfriNIC Deaggregation factor:                                  3.01
Prefixes being announced from the AfriNIC address blocks:          2426
    Unique aggregates announced from the AfriNIC address blocks:   1446
AfriNIC Region origin ASes present in the Internet Routing Table:   213
    AfriNIC Prefixes per ASN:                                     11.39
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:                      3.7
    Max AfriNIC Region AS path length visible:                       14
Number of AfriNIC addresses announced to Internet:              8193792
    Equivalent to 0 /8s, 125 /16s and 7 /24s
    Percentage of available AfriNIC address space announced:       24.4

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     1490        383          71   Videsh Sanchar Nigam Ltd. Aut
 9583     1093         81         431   Sify Limited
 9498     1059        549          63   BHARTI BT INTERNET LTD.
 4134     1041      11569         305   CHINANET-BACKBONE
17488      917         59          80   Hathway IP Over Cable Interne
 4766      818       5474         330   Korea Telecom (KIX)
23577      797         34         680   Korea Telecom (ATM-MPLS)
 7545      667        146         113   TPG Internet Pty Ltd
18101      610        120          57   Reliance Infocom Ltd Internet
 9829      584        448          10   BSNL National Internet Backbo
 1221      546       1952         422   Telstra Pty Ltd
 4668      519         68          10   LG-EDS Systems Inc.
 4808      519        796         120   CNCGROUP IP network: China169
 4812      515        865          81   China Telecom (Shanghai)
17676      504      10919          64   Softbank BB Corp.
 4802      468        126         149   Wantree Development
 9443      440        121          70   Primus Telecommunications
17974      407        145          17   PT TELEKOMUNIKASI INDONESIA
 7474      384        202         270   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     1494       6121        1005   AT&T WorldNet Services
 4323     1385       1015         363   Time Warner Telecom
 2386     1321        635         796   AT&T Data Communications Serv
11492     1172        124          41   Cable One 
 6478     1118        329         193   AT&T Worldnet Services 
18566     1034        288           9   Covad Communications 
 6197     1031        721         510   BellSouth Network Solutions, 
 7011      992        295         578   Citizens Utilities 
  174      969       6857         820   Cogent Communications
  701      897       6548         703   UUNET Technologies, Inc. 
20115      847        774         457   Charter Communications 
 3356      841      10904         417   Level 3 Communications, LLC 
22773      830       2138          58   Cox Communications, Inc.
19262      800       3046         188   Verizon Global Networks 
 1239      789       2672         550   Sprint 
  209      741       3786         582   Qwest 
 5668      664        177          20   CenturyTel Internet Holdings,
15270      608        160          41   PaeTec.net -a division of Pae
 6517      600        163          33   Yipes Communications, Inc. 
  852      584       1110         357   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      408       1653         368   TDC Tele Danmark
 9116      341        184          28   Goldenlines main autonomous s
 3301      319       1457         294   TeliaNet Sweden
 3320      316       6019         262   Deutsche Telekom AG
 8866      282         78          26   Bulgarian Telecommunication C
 8452      280        188           7   TEDATA
 6746      277        130         254   Dynamic Network Technologies,
 8551      277        266          40   Bezeq International
 8708      273        421         245   Romania Data Systems S.A.
 3215      270       2583          92   France Telecom Transpac
  680      268       2045         254   DFN-IP service G-WiN
 8220      247        439         230   COLT Telecommunications
 3352      235       1948          40   Ibernet, Internet Access Netw
 3269      229       3029          67   TELECOM ITALIA
 3300      214        220         102   AUCS Communications Services 
 9121      212       1444          26   TTnet Autonomous System
 9155      199         43          11   QualityNet AS number
 1257      195       1195         178   SWIPnet Swedish IP Network
12479      195        578           6   Uni2 Autonomous System

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8151     1158       2409         219   UniNet S.A. de C.V. 
11830      539        299           9   Instituto Costarricense de El
16814      427         27          10   NSS, S.A. 
 7303      406        197          61   Telecom Argentina Stet-France
11172      379        115          62   Servicios Alestra S.A de C.V 
14522      379         34           8   SatNet S.A. 
 6471      363         85          38   ENTEL CHILE S.A. 
22047      322        254          13   VTR PUNTO NET S.A. 
10481      301        120          10   Prima S.A. 
10620      289         79          23   TVCABLE BOGOTA 
14117      285         19          15   Telefonica del Sur S.A. 
 6147      256        214          21   Telefonica Del Peru 
 7738      238        602          25   Telecomunicacoes da Bahia S.A
11556      236        128           4   Cable-Wireless Panama 
20299      223         33          29   NEWCOM AMERICAS 
23216      222         17          47   RAMtelecom Telecomunicaciones
 6503      220        187          86   AVANTEL, S.A. 
28573      216        321          29   NET Servicos de Comunicao S.A
19169      190         12          20   Telconet 
21826      186         33          47   INTERCABLE 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
24863      391         60          36   LINKdotNET AS number
 3741      280        869         226   The Internet Solution 
20858      200         34           3   EgyNet
 6713      145        135          11   Itissalat Al-MAGHRIB
 2018      144        300         116   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       86         84           4   Nile Online
 2905       77        174          73   The Internetworking Company o
23889       75         24          15   MAURITIUS TELECOM
20484       66          5           6   Yalla Online Autonomous Syste
15706       58         12           4   Sudatel Internet Exchange Aut
29571       57         13           7   Ci Telecom Autonomous system 
33774       50         37          28   AS Number for Telecom Algeria
 5713       47        423          37   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
 4755      1490        1419      Videsh Sanchar Nigam Ltd. Aut
11492      1172        1131      Cable One 
18566      1034        1025      Covad Communications 
 4323      1385        1022      Time Warner Telecom
 9498      1059         996      BHARTI BT INTERNET LTD.
 8151      1158         939      UniNet S.A. de C.V. 
 6478      1118         925      AT&T Worldnet Services 
17488       917         837      Hathway IP Over Cable Interne
22773       830         772      Cox Communications, Inc.
 4134      1041         736      CHINANET-BACKBONE
 9583      1093         662      Sify Limited
 5668       664         644      CenturyTel Internet Holdings,
19262       800         612      Verizon Global Networks 
 9829       584         574      BSNL National Internet Backbo
15270       608         567      PaeTec.net -a division of Pae
 6517       600         567      Yipes Communications, Inc. 
 7545       667         554      TPG Internet Pty Ltd
18101       610         553      Reliance Infocom Ltd Internet
11830       539         530      Instituto Costarricense de El
 2386      1321         525      AT&T Data Communications Serv

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

Bad AS  Designation  Network              Transit AS  Description
65068   PRIVATE       79.171.184.0/21      43895       *
64779   PRIVATE       124.161.4.0/23       38356       BeiJing Sincerity-ti

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     
/13:270     /14:485     /15:960     /16:9737    /17:4185    /18:6837    
/19:14817   /20:16917   /21:15942   /22:20093   /23:21045   /24:125722  
/25:821     /26:1035    /27:550     /28:91      /29:5       /30:0       
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
11492     1163          1172      Cable One 
 6478     1117          1118      AT&T Worldnet Services 
18566     1016          1034      Covad Communications 
 2386     1012          1321      AT&T Data Communications Serv
 9583      938          1093      Sify Limited
 7011      877           992      Citizens Utilities 
 4755      855          1490      Videsh Sanchar Nigam Ltd. Aut
 7018      824          1494      AT&T WorldNet Services
23577      788           797      Korea Telecom (ATM-MPLS)
 6197      773          1031      BellSouth Network Solutions, 
 9498      746          1059      BHARTI BT INTERNET LTD.
17488      732           917      Hathway IP Over Cable Interne
 4766      606           818      Korea Telecom (KIX)
 4323      591          1385      Time Warner Telecom
15270      570           608      PaeTec.net -a division of Pae
19916      564           569      OLM LLC 
 6517      556           600      Yipes Communications, Inc. 
 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         8:91       12:1908     13:2        15:20       16:3      
  17:6        18:13       20:35       24:1011     25:1        31:1      
  32:61       33:3        38:364      40:64       41:403      44:2      
  47:8        52:3        55:3        56:3        57:21       58:487    
  59:413      60:389      61:995      62:1003     63:1976     64:3287   
  65:2360     66:3597     67:950      68:646      69:2056     70:465    
  71:106      72:1458     73:7        74:754      75:263      76:158    
  77:488      78:376      79:43       80:894      81:814      82:550    
  83:361      84:617      85:890      86:365      87:613      88:289    
  89:1057     90:39       91:811      92:13       96:1        97:7      
  98:18      114:1       115:1       116:447     117:221     118:50     
 121:351     122:652     123:228     124:748     125:1062    128:309    
 129:181     130:137     131:375     132:62      133:9       134:194    
 135:33      136:195     137:82      138:148     139:73      140:513    
 141:117     142:372     143:260     144:329     145:51      146:331    
 147:127     148:481     149:184     150:171     151:118     152:95     
 153:122     154:11      155:270     156:199     157:226     158:165    
 159:197     160:185     161:100     162:193     163:185     164:558    
 165:415     166:291     167:311     168:552     169:126     170:417    
 171:29      172:5       173:1       189:119     190:1285    192:5739   
 193:4052    194:3226    195:2327    196:931     198:3806    199:3231   
 200:5216    201:1279    202:7368    203:7819    204:3956    205:2018   
 206:2416    207:2764    208:3011    209:3558    210:2511    211:1106   
 212:1274    213:1601    214:415     215:47      216:4075    217:1214   
 218:331     219:403     220:1014    221:406     222:287    

End of report



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