Weekly Routing Table Report

Routing Table Analysis cscora at apnic.net
Fri Aug 13 18:06:23 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 14 Aug, 2004

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

BGP routing table entries examined:                              143639
    Prefixes after maximum aggregation:                           85667
    Unique aggregates announced to Internet:                      69197
Total ASes present in the Internet Routing Table:                 17769
Origin-only ASes present in the Internet Routing Table:           15409
Origin ASes announcing only one prefix:                            7231
Transit ASes present in the Internet Routing Table:                2360
Transit-only ASes present in the Internet Routing Table:             75
Average AS path length visible in the Internet Routing Table:       4.7
    Max AS path length visible:                                      26
Prefixes from unregistered ASNs in the Routing Table:                 7
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:             16
Number of addresses announced to Internet:                   1327112864
    Equivalent to 79 /8s, 26 /16s and 34 /24s
    Percentage of available address space announced:               35.8
    Percentage of allocated address space announced:               57.9
    Percentage of available address space allocated:               61.9
Total number of prefixes smaller than registry allocations:       66014

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

Prefixes being announced by APNIC Region ASes:                    27629
    Total APNIC prefixes after maximum aggregation:               13984
Prefixes being announced from the APNIC address blocks:           25856
    Unique aggregates announced from the APNIC address blocks:    14097
APNIC Region origin ASes present in the Internet Routing Table:    2100
APNIC Region origin ASes announcing only one prefix:                625
APNIC Region transit ASes present in the Internet Routing Table:    330
Average APNIC Region AS path length visible:                        4.8
    Max APNIC Region AS path length visible:                         16
Number of APNIC addresses announced to Internet:              156113664
    Equivalent to 9 /8s, 78 /16s and 27 /24s
    Percentage of available APNIC address space announced:         71.2

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:                     82019
    Total ARIN prefixes after maximum aggregation:                49941
Prefixes being announced from the ARIN address blocks:            63508
    Unique aggregates announced from the ARIN address blocks:     22172
ARIN Region origin ASes present in the Internet Routing Table:     9384
ARIN Region origin ASes announcing only one prefix:                3374
ARIN Region transit ASes present in the Internet Routing Table:     927
Average ARIN Region AS path length visible:                         4.5
    Max ARIN Region AS path length visible:                          16
Number of ARIN addresses announced to Internet:               229403296
    Equivalent to 13 /8s, 172 /16s and 106 /24s
    Percentage of available ARIN address space announced:          68.4

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:                     26550
    Total RIPE prefixes after maximum aggregation:                18807
Prefixes being announced from the RIPE address blocks:            23326
    Unique aggregates announced from the RIPE address blocks:     15585
RIPE Region origin ASes present in the Internet Routing Table:     5734
RIPE Region origin ASes announcing only one prefix:                3097
RIPE Region transit ASes present in the Internet Routing Table:     985
Average RIPE Region AS path length visible:                         5.3
    Max RIPE Region AS path length visible:                          26
Number of RIPE addresses announced to Internet:               168878656
    Equivalent to 10 /8s, 16 /16s and 226 /24s
    Percentage of available RIPE address space announced:          59.2

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:                    6257
    Total LACNIC prefixes after maximum aggregation:               2257
Prefixes being announced from the LACNIC address blocks:           6026
    Unique aggregates announced from the LACNIC address blocks:    3608
LACNIC Region origin ASes present in the Internet Routing Table:    387
LACNIC Region origin ASes announcing only one prefix:               114
LACNIC Region transit ASes present in the Internet Routing Table:    75
Average LACNIC Region AS path length visible:                       5.1
    Max LACNIC Region AS path length visible:                        17
Number of LACNIC addresses announced to Internet:              15517440
    Equivalent to 0 /8s, 236 /16s and 199 /24s
    Percentage of available LACNIC address space announced:        46.2

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

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

Prefixes being announced by AfriNIC Region ASes:                   1177
    Total AfriNIC prefixes after maximum aggregation:               678
Prefixes being announced from the AfriNIC address blocks:           824
    Unique aggregates announced from the AfriNIC address blocks:    653
AfriNIC Region origin ASes present in the Internet Routing Table:    91
AfriNIC Region origin ASes announcing only one prefix:               21
AfriNIC Region transit ASes present in the Internet Routing Table:   12
Average AfriNIC Region AS path length visible:                      4.9
    Max AfriNIC Region AS path length visible:                       15
Number of AfriNIC addresses announced to Internet:              1987328
    Equivalent to 0 /8s, 30 /16s and 83 /24s
    Percentage of available AfriNIC address space announced:       11.8

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      828       4161         155   Data Communications Bureau
 1221      813       1184         586   Telstra Pty Ltd
 4766      549       2897         264   Korea Internet Exchange for "
 9583      520         40         106   Satyam Infoway Ltd.,
 4755      365        133          49   Videsh Sanchar Nigam Ltd. Aut
 9929      360        161          32   China Netcom Corp.
 9443      354         69          80   Primus Telecommunications
 2907      352       1840         326   SINET Japan
17676      342       5100          34   XTAGE CORPORATION
17557      327         23         164   Pakistan Telecom
  703      317        342         244   UUNET
 2764      287        275         234   connect.com.au pty ltd
 7474      264        268         202   Optus Communications Pty Ltd
17633      241         56           6   ASN for Shandong Provincial N
 9942      236         71         129   COMindico Australia
 4802      229         25         138   Wantree Development
 9800      226        370          64   CHINA UNICOM
 9498      220         49          49   BHARTI BT INTERNET LTD.
10036      202         18         183   C&M Communication Co. Ltd.
 4837      196       2023         106   chinanet IDC center beijing n

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1390       6802         964   AT&T WorldNet Services
  701     1285       8408         927   UUNET Technologies, Inc. 
 6347      947        390         100   SAVVIS Communications Corpora
 1239      934       2872         624   Sprint 
 6197      777        524         298   BellSouth Network Solutions, 
 4323      775        614         213   Time Warner Telecom
18566      740        193           8   Covad Communications 
  209      613       3430         496   Qwest 
  721      588      20712         272   DLA Systems Automation Center
20115      569        378         294   Charter Communications 
 3356      558      10946         430   Level 3 Communications, LLC 
  852      510       1142         398   Telus Advanced Communications
 7843      498        681         115   Adelphia Corp. 
 6198      452        429         204   BellSouth Network Solutions, 
  705      430        163         272   UUNET Technologies, Inc. 
 7132      430       8045         372   SBC Internet Services
 2386      410        534         231   AT&T Data Communications Serv
22773      401        796          66   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      650       2020         541   UUNET - Commercial IP service
 3320      301       2469         238   Deutsche Telekom AG
 3301      282       1098         271   TeliaNet Sweden
 8220      277        448         264   COLT Internet - International
  680      244       2025         239   DFN-IP service G-WiN
 3246      216        484         213   Song Networks
13083      216         51           8   Mannesmann Datenverarbeitung 
 1257      215        747         184   SWIPnet Swedish IP Network
 5515      199        842         145   Sonera Solution Autonomous Sy
 8708      196        113         176   Romania Data Systems S.A.
 3215      182        892          77   France Telecom Transpac
  786      177       1794         177   The JANET IP Service
25186      165        155         113   France Telecom Transpac's Tra
 5400      152        208         123   BT Ignite European Backbone
 6746      152         29         129   Dynamic Network Technologies,
  719      150        288         102   LANLINK autonomous system
 3269      143       1195          65   TELECOM ITALIA
 8866      134         15          14   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      357        100          54   Servicios Alestra S.A de C.V 
 6140      334        137          64   ImpSat
 8151      285        391         131   UniNet S.A. de C.V. 
16814      206         13           7   NSS, S.A. 
 6147      188         86          20   Telefonica Del Peru 
11664      143         11          22   Keytech SA 
 6505      137         90          94   Global One Communicaoes Ltda 
 6503      128        203          86   AVANTEL, S.A. 
 7303      121         55          19   Telecom Argentina Stet-France
11992       91          9          29   Integrated Systems 
11556       89         51          11   Cable-Wireless Panama 
14420       82          6          32   ANDINATEL S.A. 
 6535       81          5          16   Chilesat Servicios  Empresari
11311       79          7          19   Sinectis S.A. 
15311       76         21          36   Telefonica Empresas 
 5639       71          8           8   Telecommunications Services o
 4270       70         18           9   Red de Interconexion Universi
14117       69          5           4   Telefonica del Sur S.A. 
10292       67          6          26   TELECOMMUNICATIONS OF JAMAICA
11340       67          5          36   Red Universitaria Nacional 

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
11845       40          9          11   Data Pro Business Online 
 9129       32          3           4   UUNET Kenya
24835       32         18           5   RAYA Telecom - Egypt
 6713       26         38           9   Itissalat Al-MAGHRIB
 8524       26          2           4   AUCEGYPT Autonomous System
 5713       25        125          23   Telkom SA Ltd 
14988       25         16           1   Botswana Telecommunications C
16637       24          9          19   Johnnic e-Ventures 
12455       22          4           2   Jambonet Autonomous system
10798       18          1          12   Standard Bank of South Africa
 8346       15          7          14   SONATEL-AS Autonomous System
12258       15          3          10   Vodacom Internet Company 
15706       15          4           2   Sudatel Internet Exchange Aut
21491       14          1           3   UTL On-line is RF broadband I
15808       13          1           2   Communication Solutions Ltd i
17148       13          1           7   First National Bank 

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

  ASN   No of nets  Net Savings Description
 6347       947         847      SAVVIS Communications Corpora
18566       740         732      Covad Communications 
 4134       828         673      Data Communications Bureau
 4323       775         562      Time Warner Telecom
 6197       777         479      BellSouth Network Solutions, 
 9583       520         414      Satyam Infoway Ltd.,
 7843       498         383      Adelphia Corp. 
 5668       383         365      Century Telephone 
  701      1285         358      UUNET Technologies, Inc. 
22773       401         335      Cox Communications, Inc. Atla
27364       350         331      Armstrong Cable Services 
22909       360         330      Comcast Cable Corporation 
 9929       360         328      China Netcom Corp.
 6467       354         322      E.Spire Communications, Inc. 
  721       588         316      DLA Systems Automation Center
 4755       365         316      Videsh Sanchar Nigam Ltd. Aut
 1239       934         310      Sprint 
17676       342         308      XTAGE CORPORATION
11172       357         303      Servicios Alestra S.A de C.V 
 4355       388         289      EarthLink, Inc. 

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

Bad AS  Designation  Network              Transit AS  Description
64606   PRIVATE       80.255.192.0/21       2529       Demon Internet
64606   PRIVATE       80.255.192.0/20       2529       Demon Internet
64606   PRIVATE       80.255.200.0/21       2529       Demon Internet
65217   PRIVATE       128.101.58.0/28        217       University of Minnes
 1877   UNALLOCATED   192.108.199.0/24      1876       Southern Methodist U
63330   RESERVED      213.8.224.0/23        5486       Euronet Digital Comm
63330   RESERVED      213.8.226.0/23        5486       Euronet Digital Comm

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       /11:15      /12:62      
/13:129     /14:303     /15:536     /16:7953    /17:2140    /18:3729    
/19:9679    /20:10147   /21:7512    /22:10420   /23:12048   /24:78245   
/25:227     /26:193     /27:99      /28:43      /29:18      /30:76      
/31:0       /32:37      

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

  ASN   No of nets  Total ann.   Description
 6347      729           947      SAVVIS Communications Corpora
18566      723           740      Covad Communications 
 6197      595           777      BellSouth Network Solutions, 
 7018      532          1390      AT&T WorldNet Services
  702      406           650      UUNET - Commercial IP service
  701      365          1285      UUNET Technologies, Inc. 
 9583      365           520      Satyam Infoway Ltd.,
 1239      364           934      Sprint 
 4766      357           549      Korea Internet Exchange for "
27364      336           350      Armstrong Cable Services 
 5668      335           383      Century Telephone 
 6198      331           452      BellSouth Network Solutions, 
20115      301           569      Charter Communications 
 9929      288           360      China Netcom Corp.
 6467      259           354      E.Spire Communications, Inc. 
 6517      259           286      Yipes Communications, Inc. 
13609      258           301      Choice One Communications Inc
 3320      248           301      Deutsche Telekom AG
25844      245           245      Skadden, Arps, Slate, Meagher
  690      241           277      Merit Network 

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

   4:3         8:2        12:841      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      
  61:455      62:513      63:1852     64:2294     65:2037     66:2446   
  67:352      68:544      69:692      70:64       80:534      81:360    
  82:194      83:122      84:17      128:88      129:172     130:86     
 131:178     132:23      134:187     135:17      136:177     137:51     
 138:169     139:35      140:156     141:104     142:120     143:58     
 144:99      145:42      146:289     147:95      148:419     149:109    
 150:86      151:70      152:163     153:67      154:2       155:129    
 156:57      157:69      158:139     159:151     160:54      161:75     
 162:390     163:79      164:179     165:161     166:113     167:219    
 168:262     169:114     170:279     171:9       192:5570    193:2857   
 194:2082    195:1455    196:583     198:3649    199:3245    200:3690   
 201:9       202:4779    203:5644    204:3124    205:2044    206:2260   
 207:2487    208:2153    209:3033    210:1439    211:575     212:988    
 213:1188    214:85      215:30      216:3776    217:949     218:182    
 219:127     220:245     221:31      222:135    

End of report



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