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Weekly Routing Table Report



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   20:00 +10GMT Fri 06 Jun, 2003

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

BGP routing table entries examined:                            125953
    Prefixes after maximum aggregation:                         78963
    Unique aggregates announced to Internet:                    59252
Total ASes present in the Internet Routing Table:               15289
Origin-only ASes present in the Internet Routing Table:         13266
Origin ASes announcing only one prefix:                          6004
Transit ASes present in the Internet Routing Table:              2023
Transit-only ASes present in the Internet Routing Table:           71
Average AS path length visible in the Internet Routing Table:     5.2
    Max AS path length visible:                                   255
Illegal AS announcements present in the Routing Table:              4
Non-routable prefixes present in the Routing Table:                 0
Prefixes being announced from unallocated address space:           30
Number of addresses announced to Internet:                 1233876800
    Equivalent to 73 /8s, 139 /16s and 119 /24s
    Percentage of available address space announced:             33.3
    Percentage of allocated address space announced:             59.5
    Percentage of available address space allocated:             55.9
Total number of prefixes smaller than registry allocations:     55596

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

Prefixes being announced by APNIC Region ASes:                  21756
    Total APNIC prefixes after maximum aggregation:             12616
Prefixes being announced from the APNIC address blocks:         20161
    Unique aggregates announced from the APNIC address blocks:  12160
APNIC Region origin ASes present in the Internet Routing Table:  1808
APNIC Region origin ASes announcing only one prefix:              515
APNIC Region transit ASes present in the Internet Routing Table:  297
Average APNIC Region AS path length visible:                      5.1
    Max APNIC Region AS path length visible:                       18
Number of APNIC addresses announced to Internet:            114662816
    Equivalent to 6 /8s, 213 /16s and 157 /24s
    Percentage of available APNIC address space announced:       61.8

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

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

Prefixes being announced by ARIN Region ASes:                   77202
    Total ARIN prefixes after maximum aggregation:              48130
Prefixes being announced from the ARIN address blocks:          55311
    Unique aggregates announced from the ARIN address blocks:   16369
ARIN Region origin ASes present in the Internet Routing Table:   8450
ARIN Region origin ASes announcing only one prefix:              2884
ARIN Region transit ASes present in the Internet Routing Table:   812
Average ARIN Region AS path length visible:                       5.0
    Max ARIN Region AS path length visible:                        19
Number of ARIN addresses announced to Internet:             192464128
    Equivalent to 11 /8s, 120 /16s and 197 /24s
    Percentage of available ARIN address space announced:        71.7

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
ARIN Address Blocks    24/8, 63/8, 64/6, 68/7, 199/8, 204/6, 208/7
                       and 216/8

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

Prefixes being announced by RIPE Region ASes:                   21643
    Total RIPE prefixes after maximum aggregation:              15966
Prefixes being announced from the RIPE address blocks:          18139
    Unique aggregates announced from the RIPE address blocks:   12183
RIPE Region origin ASes present in the Internet Routing Table:   4629
RIPE Region origin ASes announcing only one prefix:              2520
RIPE Region transit ASes present in the Internet Routing Table:   818
Average RIPE Region AS path length visible:                       5.8
    Max RIPE Region AS path length visible:                        21
Number of RIPE addresses announced to Internet:             131964416
    Equivalent to 7 /8s, 221 /16s and 158 /24s
    Percentage of available RIPE address space announced:        71.5

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
RIPE Address Blocks    62/8, 80/7, 82/8, 188/8, 193/8, 194/7,
                       212/7 and 217/8

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

Prefixes being announced by LACNIC Region ASes:                  5348
    Total LACNIC prefixes after maximum aggregation:             2251
Prefixes being announced from the LACNIC address blocks:         4781
    Unique aggregates announced from the LACNIC address blocks:  2991
LACNIC Region origin ASes present in the Internet Routing Table:  331
LACNIC Region origin ASes announcing only one prefix:              85
LACNIC Region transit ASes present in the Internet Routing Table:  68
Average LACNIC Region AS path length visible:                     5.5
    Max LACNIC Region AS path length visible:                      24
Number of LACNIC addresses announced to Internet:            12624640
    Equivalent to 0 /8s, 192 /16s and 163 /24s
    Percentage of available LACNIC address space announced:      37.6

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

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 1221     1076       1103         769   Telstra Pty Ltd
 4755      421        134          72   Videsh Sanchar Nigam Ltd. Aut
 2907      374       1895         350   SINET Japan
17557      359         25         150   Pakistan Telecom
  703      343        371         272   UUNET
 2764      314        341         280   connect.com.au pty ltd
 4814      297         86          19   China Telecom (Group)
 7474      268        290         202   Optus Communications Pty Ltd
17676      250       3862          19   XTAGE CORPORATION
 3786      242        772         209   DACOM Corporation
 4134      241       2067         120   Data Communications Bureau
 9583      228         34          18   Satyam Infoway Ltd.,
 4766      212       2475         159   Korea Internet Exchange for "
 9443      182         58          82   Primus Telecommunications
 9800      181        260          59   CHINA UNICOM
 9498      147         10          18   BHARTI BT INTERNET LTD.
 4739      138         57         126   Commerical Internet eXchange 
 9238      134          8          17   TATA ISP
 7539      130        156         104   TANet2, sponsored by NSC, TAI
 4716      128        745         122   TTnet

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  701     1554       8929        1094   UUNET Technologies, Inc. 
 7018     1331       7193         921   AT&T 
 7132     1015       6572         227   Southwestern Bell Internet Se
 1239      951       3022         669   Sprint 
 3908      919       1557         482   Supernet, Inc. 
  189      705        341         292   Genuity 
11305      646        170          72   Interland Incorporated 
    1      634       2623         429   GENUITY 
 7843      631        356         180   Adelphia Corp. 
 4323      598        525         175   Time Warner Communications, I
18566      588        160           8   Covad Communications 
  852      526       1124         416   Telus Advanced Communications
  705      510        273         333   UUNET Technologies, Inc. 
  209      493       2106         299   Qwest 
 6197      491        343         194   BellSouth Network Solutions, 
 7066      481        204         259   Virginia Polytechnic Institut
 6198      466        230         177   BellSouth Network Solutions, 
20115      462        194         283   Charter Communications 
  690      452         66         296   Merit Network 
 2386      440        521         250   AT&T Data Communications Serv

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      750       2173         637   UUNET - Commercial IP service
 3301      303       1172         290   TeliaNet Sweden
 3215      295        880         168   France Telecom Transpac
 3320      266       2004         227   Deutsche Telekom AG
  680      232       2053         229   DFN-IP service G-WiN
 1257      224        311         186   SWIPnet Swedish IP Network
 8220      223        384         211   COLT Internet - International
 5400      222        139         131   BT Ignite European Backbone
  719      215        307         124   LANLINK autonomous system
 5515      181        795         152   Sonera Solution Autonomous Sy
  786      179       1874         179   The JANET IP Service
 8708      152         44         149   Romania Data Systems S.A.
 3303      140        549         137   Swisscom Ltd
 8895      131         58          29   KACST/ISU Riyadh Autonomous S
12302      128         18          35   MobiFon S.A.
 2856      124       1315         114   BTnet UK Regional network
 3269      117        823          64   TELECOM ITALIA
 3246      116        366         114   Song Networks
 3352      109        780          32   Ibernet, Internet Access Netw
 5511       95        177          76   France Telecom

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6140      295         98         110   ImpSat
 7303      238         37          57   Telecom Argentina Stet-France
 8151      214        350         117   UniNet S.A. de C.V. 
11172      169         82          41   Servicios Alestra S.A de C.V 
16814      135          9          17   NSS, S.A. 
 6503      131        189          94   AVANTEL, S.A. 
10620      115          7          32   TVCABLE BOGOTA 
11340      106          3          34   Red Universitaria Nacional 
 6147       98         70          21   Telefonica Del Peru 
11992       89          8          37   Integrated Systems 
 8065       80          8          15   Empresas Publicas de Medellin
 6535       74          5          23   Chilesat Servicios  Empresari
 1916       73        306          43   Fundacao de Amparo a Pesquisa
15311       71         12          35   Telefonica Empresas 
13999       68         36           8   Mega Cable S.A. de C.V. 
 4270       67         18           9   Red de Interconexion Universi
11830       66          4          27   Instituto Costarricense de El
 7080       64          4           1   Electronica y Comunicaciones 
 7927       64          5          39   Global One Venezuela 
11311       64          6          13   Sinectis S.A. 

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

  ASN   No of nets  Net Savings Description
 7132      1015         788      Southwestern Bell Internet Se
18566       588         580      Covad Communications 
11305       646         574      Interland Incorporated 
 7843       631         451      Adelphia Corp. 
 3908       919         437      Supernet, Inc. 
 4323       598         423      Time Warner Communications, I
  189       705         413      Genuity 
 7018      1331         410      AT&T 
 4755       421         349      Videsh Sanchar Nigam Ltd. Aut
 1221      1076         307      Telstra Pty Ltd
 6197       491         297      BellSouth Network Solutions, 
27364       315         297      Armstrong Cable Services 
 4355       404         293      EarthLink, Inc. 
 6198       466         289      BellSouth Network Solutions, 
 6347       363         285      SAVVIS Communications Corpora
22927       298         285      TELEFONICA DE ARGENTINA 
 1239       951         282      Sprint 
 4814       297         278      China Telecom (Group)
  376       384         268      Reseau Interordinateurs Scien
22909       274         264      Comcast Cable Corporation 

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

Bad AS  Designation  Network              Transit AS  Description
65516   PRIVATE       61.232.70.0/24       17621       China Netcom Corp.
65516   PRIVATE       61.232.71.0/24       17621       China Netcom Corp.
65516   PRIVATE       61.232.72.0/22       17621       China Netcom Corp.
 1877   UNALLOCATED   192.108.199.0/24      1880       Stupi, house man's p

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

Network            Origin AS  Description
39.0.0.0/8            4554     Exchange Point Blocks 
132.0.0.0/10           568     DISO-UNRRA 
137.0.0.0/13           568     DISO-UNRRA 
158.0.0.0/13           568     DISO-UNRRA 
172.208.0.0/14        1668     GNN Hosting Service 
192.16.52.0/24        1239     Sprint 
192.43.230.0/24       4738     South Australian Academic Res
192.44.0.0/19          702     UUNET - Commercial IP service
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
192.119.135.0/24       270     NASA 
192.135.50.0/24       7018     AT&T 
192.136.79.0/24        719     LANLINK autonomous system
192.136.135.0/24      1239     Sprint 
192.153.136.0/21       568     DISO-UNRRA 
192.158.254.0/24       705     UUNET Technologies, Inc. 
192.172.0.0/19         568     DISO-UNRRA 
192.228.21.0/24      27299     CIRA Canadian Internet Regist
192.228.22.0/24      27299     CIRA Canadian Internet Regist
192.228.23.0/24      27299     CIRA Canadian Internet Regist
192.228.24.0/24      27299     CIRA Canadian Internet Regist
192.228.25.0/24      27299     CIRA Canadian Internet Regist
192.228.26.0/24      27299     CIRA Canadian Internet Regist
192.228.27.0/24      27299     CIRA Canadian Internet Regist
192.228.28.0/24      27299     CIRA Canadian Internet Regist
192.228.29.0/24      27299     CIRA Canadian Internet Regist
192.228.30.0/24      27299     CIRA Canadian Internet Regist
192.228.31.0/24      27299     CIRA Canadian Internet Regist

Number of prefixes announced per prefix length (Global)
-------------------------------------------------------

 /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
 /7:0        /8:19       /9:5       /10:8       /11:13      /12:52      
/13:99      /14:256     /15:470     /16:7425    /17:1674    /18:2992    
/19:8462    /20:8533    /21:6153    /22:9084    /23:10662   /24:69503   
/25:161     /26:215     /27:55      /28:40      /29:26      /30:21      
/31:0       /32:25      

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

  ASN   No of nets  Total ann.   Description
  189      628           705      Genuity 
18566      582           588      Covad Communications 
 3908      575           919      Supernet, Inc. 
11305      572           646      Interland Incorporated 
 7018      463          1331      AT&T 
  702      459           750      UUNET - Commercial IP service
  701      437          1554      UUNET Technologies, Inc. 
  690      410           452      Merit Network 
 7843      393           631      Adelphia Corp. 
 7066      378           481      Virginia Polytechnic Institut
 6197      367           491      BellSouth Network Solutions, 
 6198      364           466      BellSouth Network Solutions, 
 1239      357           951      Sprint 
20115      323           462      Charter Communications 
27364      308           315      Armstrong Cable Services 
 4814      282           297      China Telecom (Group)
22927      236           298      TELEFONICA DE ARGENTINA 
    1      235           634      GENUITY 
 2386      220           440      AT&T Data Communications Serv
 3215      219           295      France Telecom Transpac

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

   4:2        12:705      13:1        15:4        16:1        17:3      
  20:8        24:858      25:1        32:87       38:60       40:20     
  44:2        57:17       61:468      62:345      63:1868     64:1934   
  65:1964     66:2583     67:177      68:380      69:164      80:348    
  81:126     128:138     129:177     130:48      131:80      132:26     
 134:176     135:4       136:117     137:107     138:110     139:64     
 140:137     141:111     142:94      143:42      144:105     145:14     
 146:276     147:97      148:288     149:61      150:43      151:69     
 152:231     153:57      154:3       155:116     156:53      157:37     
 158:126     159:139     160:43      161:77      162:128     163:76     
 164:308     165:143     166:93      167:323     168:411     169:61     
 170:312     171:7       192:5333    193:2456    194:1953    195:1034   
 196:471     198:3560    199:2719    200:2978    202:3783    203:5264   
 204:2987    205:2029    206:2366    207:2413    208:2581    209:2886   
 210:821     211:333     212:1075    213:793     214:20      215:23     
 216:3535    217:615     218:87      219:39      220:92      221:3      


End of report

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