Weekly Routing Table Report

Routing Table Analysis cscora at apnic.net
Fri Aug 20 18:06:27 UTC 2004


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

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

Routing Table Report   04:00 +10GMT Sat 21 Aug, 2004

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

BGP routing table entries examined:                              143916
    Prefixes after maximum aggregation:                           85856
    Unique aggregates announced to Internet:                      69426
Total ASes present in the Internet Routing Table:                 17828
Origin-only ASes present in the Internet Routing Table:           15446
Origin ASes announcing only one prefix:                            7268
Transit ASes present in the Internet Routing Table:                2382
Transit-only ASes present in the Internet Routing Table:             76
Average AS path length visible in the Internet Routing Table:       4.8
    Max AS path length visible:                                      21
Prefixes from unregistered ASNs in the Routing Table:                 6
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:             16
Number of addresses announced to Internet:                   1330637096
    Equivalent to 79 /8s, 79 /16s and 233 /24s
    Percentage of available address space announced:               35.9
    Percentage of allocated address space announced:               58.0
    Percentage of available address space allocated:               61.9
Total number of prefixes smaller than registry allocations:       65206

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

Prefixes being announced by APNIC Region ASes:                    27808
    Total APNIC prefixes after maximum aggregation:               14051
Prefixes being announced from the APNIC address blocks:           26026
    Unique aggregates announced from the APNIC address blocks:    14151
APNIC Region origin ASes present in the Internet Routing Table:    2105
APNIC Region origin ASes announcing only one prefix:                619
APNIC Region transit ASes present in the Internet Routing Table:    332
Average APNIC Region AS path length visible:                        4.9
    Max APNIC Region AS path length visible:                         16
Number of APNIC addresses announced to Internet:              157720064
    Equivalent to 9 /8s, 102 /16s and 158 /24s
    Percentage of available APNIC address space announced:         72.0

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
                       23552-24575
APNIC Address Blocks   58/7, 60/7, 202/7, 210/7, 218/7, 220/7 and 222/8

ARIN Region Analysis Summary
----------------------------

Prefixes being announced by ARIN Region ASes:                     82039
    Total ARIN prefixes after maximum aggregation:                50063
Prefixes being announced from the ARIN address blocks:            63556
    Unique aggregates announced from the ARIN address blocks:     22372
ARIN Region origin ASes present in the Internet Routing Table:     9420
ARIN Region origin ASes announcing only one prefix:                3400
ARIN Region transit ASes present in the Internet Routing Table:     924
Average ARIN Region AS path length visible:                         4.5
    Max ARIN Region AS path length visible:                          19
Number of ARIN addresses announced to Internet:               230151968
    Equivalent to 13 /8s, 183 /16s and 215 /24s
    Percentage of available ARIN address space announced:          68.6

ARIN AS Blocks         1-1876, 1902-2042, 2044-2046, 2048-2106
                       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,
                       26624-27647,29695-30719, 31744-33791
ARIN Address Blocks    24/8, 63/8, 64/6, 68/7, 70/7, 72/8, 198/7, 204/6,
                       208/7 and 216/8

RIPE Region Analysis Summary
----------------------------

Prefixes being announced by RIPE Region ASes:                     26621
    Total RIPE prefixes after maximum aggregation:                18818
Prefixes being announced from the RIPE address blocks:            23369
    Unique aggregates announced from the RIPE address blocks:     15593
RIPE Region origin ASes present in the Internet Routing Table:     5752
RIPE Region origin ASes announcing only one prefix:                3112
RIPE Region transit ASes present in the Internet Routing Table:    1006
Average RIPE Region AS path length visible:                         5.4
    Max RIPE Region AS path length visible:                          21
Number of RIPE addresses announced to Internet:               169553728
    Equivalent to 10 /8s, 27 /16s and 47 /24s
    Percentage of available RIPE address space announced:          59.4

RIPE AS Blocks         1877-1901, 2043, 2047, 2107-2136, 2585-2614
                       2773-2822, 2830-2879, 3154-3353, 5377-5631
                       6656-6911, 8192-9215, 12288-13311, 15360-16383
                       20480-21503, 24576-25599, 28672-29695
                       30720-31743, 33792-34815
RIPE Address Blocks    62/8, 80/5, 88/8, 188/8, 193/8, 194/7, 212/7
                       and 217/8

LACNIC Region Analysis Summary
------------------------------

Prefixes being announced by LACNIC Region ASes:                    6278
    Total LACNIC prefixes after maximum aggregation:               2247
Prefixes being announced from the LACNIC address blocks:           6029
    Unique aggregates announced from the LACNIC address blocks:    3540
LACNIC Region origin ASes present in the Internet Routing Table:    387
LACNIC Region origin ASes announcing only one prefix:               115
LACNIC Region transit ASes present in the Internet Routing Table:    76
Average LACNIC Region AS path length visible:                       5.2
    Max LACNIC Region AS path length visible:                        15
Number of LACNIC addresses announced to Internet:              15724544
    Equivalent to 0 /8s, 239 /16s and 240 /24s
    Percentage of available LACNIC address space announced:        46.9

LACNIC AS Blocks       26592-26623, 27648-28671
LACNIC Address Blocks  200/7

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

Prefixes being announced by AfriNIC Region ASes:                   1164
    Total AfriNIC prefixes after maximum aggregation:               677
Prefixes being announced from the AfriNIC address blocks:           802
    Unique aggregates announced from the AfriNIC address blocks:    655
AfriNIC Region origin ASes present in the Internet Routing Table:    89
AfriNIC Region origin ASes announcing only one prefix:               22
AfriNIC Region transit ASes present in the Internet Routing Table:   13
Average AfriNIC Region AS path length visible:                      4.9
    Max AfriNIC Region AS path length visible:                       16
Number of AfriNIC addresses announced to Internet:              1992192
    Equivalent to 0 /8s, 30 /16s and 102 /24s
    Percentage of available AfriNIC address space announced:       11.9

AfriNIC AS Blocks      <none>
AfriNIC Address Blocks 196/8

APNIC Region per AS prefix count summary
----------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 4134      830       4161         155   Data Communications Bureau
 1221      811       1184         585   Telstra Pty Ltd
 4766      559       2897         265   Korea Internet Exchange for "
 9583      525         40         105   Satyam Infoway Ltd.,
 4755      364        133          48   Videsh Sanchar Nigam Ltd. Aut
 9929      361        161          33   China Netcom Corp.
 9443      355         70          81   Primus Telecommunications
 2907      353       1840         327   SINET Japan
17676      346       5148          38   XTAGE CORPORATION
17557      327         23         164   Pakistan Telecom
  703      317        342         244   UUNET
 2764      289        274         236   connect.com.au pty ltd
 7474      264        268         201   Optus Communications Pty Ltd
 9942      236         73         129   COMindico Australia
 4802      230         25         139   Wantree Development
 9800      225        369          63   CHINA UNICOM
 9498      220         49          49   BHARTI BT INTERNET LTD.
17633      214         56           6   ASN for Shandong Provincial N
 4837      202       2246         109   chinanet IDC center beijing n
10036      202         18         183   C&M Communication Co. Ltd.

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1398       6787         966   AT&T WorldNet Services
  701     1278       8423         921   UUNET Technologies, Inc. 
 1239      928       2855         619   Sprint 
 6347      801        373         120   SAVVIS Communications Corpora
 4323      781        632         219   Time Warner Telecom
18566      741        193           8   Covad Communications 
 6197      717        361         339   BellSouth Network Solutions, 
  209      614       3430         497   Qwest 
  721      601      20805         275   DLA Systems Automation Center
20115      576        384         298   Charter Communications 
 3356      564      10935         434   Level 3 Communications, LLC 
  852      510       1142         398   Telus Advanced Communications
 7843      507        690         119   Adelphia Corp. 
 6198      454        398         206   BellSouth Network Solutions, 
 7132      432       8029         374   SBC Internet Services
  705      429        163         271   UUNET Technologies, Inc. 
 2386      405        531         229   AT&T Data Communications Serv
22773      405        960          18   Cox Communications, Inc. Atla
 4355      388        323          99   EarthLink, Inc. 
  376      385        363         113   Reseau Interordinateurs Scien

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      651       2020         542   UUNET - Commercial IP service
 3320      300       2469         237   Deutsche Telekom AG
 3301      281       1098         271   TeliaNet Sweden
 8220      275        445         262   COLT Internet - International
  680      244       2025         239   DFN-IP service G-WiN
13083      217         51           8   Mannesmann Datenverarbeitung 
 3246      216        483         213   Song Networks
 1257      214        747         183   SWIPnet Swedish IP Network
 8708      203        113         181   Romania Data Systems S.A.
 5515      199        842         145   Sonera Solution Autonomous Sy
 3215      183        892          77   France Telecom Transpac
  786      177       1794         177   The JANET IP Service
25186      164        155         112   France Telecom Transpac's Tra
 5400      158        274         129   BT Ignite European Backbone
 6746      153         29         130   Dynamic Network Technologies,
  719      150        288         102   LANLINK autonomous system
 3269      143       1195          65   TELECOM ITALIA
 8866      131         15          15   Bulgarian Telecommunication C
 3303      130        609         129   Swisscom Ltd
12302      127         18          33   MobiFon S.A.

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
11172      358        100          54   Servicios Alestra S.A de C.V 
 6140      334        137          64   ImpSat
 8151      286        392         132   UniNet S.A. de C.V. 
16814      206         13           7   NSS, S.A. 
 6147      187         86          19   Telefonica Del Peru 
11664      154         11          24   Keytech SA 
 6505      137         90          94   Global One Communicaoes Ltda 
 6503      129        203          87   AVANTEL, S.A. 
 7303      121         55          19   Telecom Argentina Stet-France
11992       89          9          30   Integrated Systems 
14420       82          6          32   ANDINATEL S.A. 
 6535       81          5          16   Chilesat Servicios  Empresari
11556       81         41           3   Cable-Wireless Panama 
11311       79          7          19   Sinectis S.A. 
 5639       76          8           8   Telecommunications Services o
15311       76         21          36   Telefonica Empresas 
 4270       70         18           9   Red de Interconexion Universi
14117       69          5           4   Telefonica del Sur S.A. 
11340       68         21          37   Red Universitaria Nacional 
10292       67          6          26   TELECOMMUNICATIONS OF JAMAICA

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3741      253        632         220   The Internet Solution 
 5536      113         16           4   Internet Egypt Network
 2018       94        297          92   Tertiary Education Network 
 2905       92        276          81   The Internetworking Company o
14988       44         16           1   Botswana Telecommunications C
20928       44         16           1   Noor Advanced Technologies AS
24835       33         18           6   RAYA Telecom - Egypt
 6713       27         42          10   Itissalat Al-MAGHRIB
 8524       26          2           4   AUCEGYPT Autonomous System
 5713       25        125          23   Telkom SA Ltd 
16637       24         10          19   Johnnic e-Ventures 
12455       20          4           2   Jambonet Autonomous system
10798       18          1          12   Standard Bank of South Africa
12258       18          3          12   Vodacom Internet Company 
 8346       15          7          14   SONATEL-AS Autonomous System
15706       15          4           2   Sudatel Internet Exchange Aut
21491       14          1           3   UTL On-line is RF broadband I
17148       13          1           7   First National Bank 
 2609       12         26           4   Tunisia BackBone AS
11845       12          9          11   Data Pro Business Online 

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

  ASN   No of nets  Net Savings Description
18566       741         733      Covad Communications 
 6347       801         681      SAVVIS Communications Corpora
 4134       830         675      Data Communications Bureau
 4323       781         562      Time Warner Telecom
 9583       525         420      Satyam Infoway Ltd.,
 7843       507         388      Adelphia Corp. 
22773       405         387      Cox Communications, Inc. Atla
 6197       717         378      BellSouth Network Solutions, 
 5668       383         365      Century Telephone 
  701      1278         357      UUNET Technologies, Inc. 
27364       350         331      Armstrong Cable Services 
 9929       361         328      China Netcom Corp.
  721       601         326      DLA Systems Automation Center
22909       358         323      Comcast Cable Corporation 
 6467       350         321      E.Spire Communications, Inc. 
 4755       364         316      Videsh Sanchar Nigam Ltd. Aut
 1239       928         309      Sprint 
17676       346         308      XTAGE CORPORATION
11172       358         304      Servicios Alestra S.A de C.V 
 4766       559         294      Korea Internet Exchange for "

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

Bad AS  Designation  Network              Transit AS  Description
65217   PRIVATE       192.102.236.0/24       217       University of Minnes
 1877   UNALLOCATED   192.108.199.0/24      1876       Southern Methodist U
64584   PRIVATE       219.146.176.0/22     17633       ASN for Shandong Pro
64584   PRIVATE       219.146.180.0/22     17633       ASN for Shandong Pro
64584   PRIVATE       222.174.96.0/20      17633       ASN for Shandong Pro
64584   PRIVATE       222.174.112.0/20     17633       ASN for Shandong Pro

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

Network            Origin AS  Description
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
192.43.230.0/24       4738     South Australian Academic Res
192.44.0.0/19          702     UUNET - Commercial IP service
192.70.164.0/24      25689     National Research Council of 
192.83.16.0/20        5515     Sonera Solution Autonomous Sy
192.83.32.0/19        5515     Sonera Solution Autonomous Sy
192.83.96.0/22        5515     Sonera Solution Autonomous Sy
192.83.100.0/24       5515     Sonera Solution Autonomous Sy
192.84.205.0/24        719     LANLINK autonomous system
192.119.135.0/24       270     NASA 
192.135.50.0/24       7018     AT&T WorldNet Services
192.136.79.0/24        719     LANLINK autonomous system
192.172.0.0/19         721     DLA Systems Automation Center
192.172.11.0/24        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       /9:3       /10:6       /11:14      /12:63      
/13:134     /14:304     /15:542     /16:7973    /17:2166    /18:3771    
/19:9698    /20:10194   /21:7508    /22:10415   /23:12050   /24:78385   
/25:236     /26:188     /27:100     /28:36      /29:9       /30:75      
/31:0       /32:27      

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

  ASN   No of nets  Total ann.   Description
18566      724           741      Covad Communications 
 6347      604           801      SAVVIS Communications Corpora
 6197      569           717      BellSouth Network Solutions, 
 7018      538          1398      AT&T WorldNet Services
  702      405           651      UUNET - Commercial IP service
 4766      367           559      Korea Internet Exchange for "
 9583      367           525      Satyam Infoway Ltd.,
  701      364          1278      UUNET Technologies, Inc. 
 1239      364           928      Sprint 
27364      336           350      Armstrong Cable Services 
 5668      335           383      Century Telephone 
 6198      334           454      BellSouth Network Solutions, 
20115      303           576      Charter Communications 
 9929      289           361      China Netcom Corp.
 6517      264           291      Yipes Communications, Inc. 
 6467      259           350      E.Spire Communications, Inc. 
13609      257           300      Choice One Communications Inc
 3320      247           300      Deutsche Telekom AG
25844      245           245      Skadden, Arps, Slate, Meagher
14824      242           265      NewSouth Communications Corp.

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

   4:4         8:2        12:851      13:1        15:5        16:2      
  17:3        20:9        24:717      32:66       33:2        38:79     
  40:54       44:4        55:1        56:3        57:16       60:6      
  61:458      62:511      63:1850     64:2240     65:2042     66:2446   
  67:359      68:545      69:695      70:65       80:539      81:355    
  82:196      83:122      84:33      128:95      129:174     130:84     
 131:178     132:23      134:185     135:17      136:182     137:49     
 138:169     139:37      140:160     141:106     142:119     143:58     
 144:100     145:42      146:288     147:93      148:419     149:111    
 150:88      151:70      152:159     153:68      154:2       155:130    
 156:58      157:71      158:142     159:149     160:54      161:70     
 162:390     163:79      164:179     165:161     166:115     167:221    
 168:282     169:114     170:276     171:9       192:5567    193:2852   
 194:2079    195:1436    196:561     198:3661    199:3248    200:3668   
 201:9       202:4818    203:5666    204:3147    205:2081    206:2300   
 207:2483    208:2152    209:3009    210:1451    211:588     212:990    
 213:1186    214:94      215:30      216:3771    217:989     218:182    
 219:116     220:246     221:33      222:115    

End of report



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