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Weekly Routing Table Report

  • From: Routing Table Analysis
  • Date: Fri Jan 21 13:07:56 2005

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@lists.apnic.net

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

Routing Table Report   04:00 +10GMT Sat 22 Jan, 2005

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

BGP routing table entries examined:                              155157
    Prefixes after maximum aggregation:                           90262
    Unique aggregates announced to Internet:                      74120
Total ASes present in the Internet Routing Table:                 18844
Origin-only ASes present in the Internet Routing Table:           16362
Origin ASes announcing only one prefix:                            7675
Transit ASes present in the Internet Routing Table:                2482
Transit-only ASes present in the Internet Routing Table:             78
Average AS path length visible in the Internet Routing Table:       4.5
    Max AS path length visible:                                      19
Prefixes from unregistered ASNs in the Routing Table:                 5
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:             16
Number of addresses announced to Internet:                   1368386088
    Equivalent to 81 /8s, 143 /16s and 234 /24s
    Percentage of available address space announced:               36.9
    Percentage of allocated address space announced:               59.7
    Percentage of available address space allocated:               61.9
Total number of prefixes smaller than registry allocations:       72674

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

Prefixes being announced by APNIC Region ASes:                    30684
    Total APNIC prefixes after maximum aggregation:               14870
Prefixes being announced from the APNIC address blocks:           28712
    Unique aggregates announced from the APNIC address blocks:    14618
APNIC Region origin ASes present in the Internet Routing Table:    2188
APNIC Region origin ASes announcing only one prefix:                647
APNIC Region transit ASes present in the Internet Routing Table:    325
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         16
Number of APNIC addresses announced to Internet:              171804544
    Equivalent to 10 /8s, 61 /16s and 135 /24s
    Percentage of available APNIC address space announced:         78.4

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:                     87123
    Total ARIN prefixes after maximum aggregation:                52178
Prefixes being announced from the ARIN address blocks:            65773
    Unique aggregates announced from the ARIN address blocks:     24084
ARIN Region origin ASes present in the Internet Routing Table:     9824
ARIN Region origin ASes announcing only one prefix:                3546
ARIN Region transit ASes present in the Internet Routing Table:     970
Average ARIN Region AS path length visible:                         4.3
    Max ARIN Region AS path length visible:                          16
Number of ARIN addresses announced to Internet:               239481856
    Equivalent to 14 /8s, 70 /16s and 52 /24s
    Percentage of available ARIN address space announced:          71.4

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:                     29208
    Total RIPE prefixes after maximum aggregation:                20133
Prefixes being announced from the RIPE address blocks:            26177
    Unique aggregates announced from the RIPE address blocks:     17156
RIPE Region origin ASes present in the Internet Routing Table:     6248
RIPE Region origin ASes announcing only one prefix:                3338
RIPE Region transit ASes present in the Internet Routing Table:    1060
Average RIPE Region AS path length visible:                         5.1
    Max RIPE Region AS path length visible:                          19
Number of RIPE addresses announced to Internet:               185679936
    Equivalent to 11 /8s, 17 /16s and 64 /24s
    Percentage of available RIPE address space announced:          65.1

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:                    6814
    Total LACNIC prefixes after maximum aggregation:               2381
Prefixes being announced from the LACNIC address blocks:           6683
    Unique aggregates announced from the LACNIC address blocks:    3987
LACNIC Region origin ASes present in the Internet Routing Table:    413
LACNIC Region origin ASes announcing only one prefix:               120
LACNIC Region transit ASes present in the Internet Routing Table:    80
Average LACNIC Region AS path length visible:                       5.0
    Max LACNIC Region AS path length visible:                        16
Number of LACNIC addresses announced to Internet:              17302016
    Equivalent to 1 /8s, 8 /16s and 2 /24s
    Percentage of available LACNIC address space announced:        51.6

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

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

Prefixes being announced by AfriNIC Region ASes:                   1323
    Total AfriNIC prefixes after maximum aggregation:               700
Prefixes being announced from the AfriNIC address blocks:           866
    Unique aggregates announced from the AfriNIC address blocks:    684
AfriNIC Region origin ASes present in the Internet Routing Table:    95
AfriNIC Region origin ASes announcing only one prefix:               24
AfriNIC Region transit ASes present in the Internet Routing Table:   13
Average AfriNIC Region AS path length visible:                      4.5
    Max AfriNIC Region AS path length visible:                       12
Number of AfriNIC addresses announced to Internet:              2102016
    Equivalent to 0 /8s, 32 /16s and 19 /24s
    Percentage of available AfriNIC address space announced:       12.5

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      881       4596         171   Data Communications Bureau
 1221      787       1184         562   Telstra Pty Ltd
 4766      576       3415         278   Korea Internet Exchange for "
 9583      573         48          11   Satyam Infoway Ltd.,
 4755      454        177          95   Videsh Sanchar Nigam Ltd. Aut
17676      393       5900          61   XTAGE CORPORATION
 9443      362         71          77   Primus Telecommunications
 2907      354       1856         327   SINET Japan
 9929      345        164          35   China Netcom Corp.
  703      325        344         255   UUNET
17557      304         22         149   Pakistan Telecom
10036      294         27         270   C&M Communication Co. Ltd.
 7545      278         86          67   TPG Internet Pty Ltd
 2764      276        255         223   connect.com.au pty ltd
 7474      273        268         203   Optus Communications Pty Ltd
 9800      238        383          76   CHINA UNICOM
 4808      234        172         128   CHINANET core WAN North
 9498      232         81          52   BHARTI BT INTERNET LTD.
 4802      230         28         139   Wantree Development
 7563      226         48         158   Korea Internet Infrastructure

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1441       6602         971   AT&T WorldNet Services
  721     1103      21739         309   DLA Systems Automation Center
  701     1060       8331         910   UUNET Technologies, Inc. 
 1239      920       2879         613   Sprint 
 2386      849        523         601   AT&T Data Communications Serv
 6197      834        378         391   BellSouth Network Solutions, 
 4323      827        671         224   Time Warner Telecom
18566      765        208           6   Covad Communications 
  209      674       3438         509   Qwest 
 3356      597      10867         441   Level 3 Communications, LLC 
20115      566        470         302   Charter Communications 
 3561      549       2370         416   Cable & Wireless USA 
  852      526       1126         400   Telus Advanced Communications
 6478      486        818         100   AT&T Worldnet Services 
27364      460         44          19   Armstrong Cable Services 
 6198      450        388         200   BellSouth Network Solutions, 
 7132      450       8379         379   SBC Internet Services
22773      431       1085          19   Cox Communications, Inc. Atla
 5668      429         87          17   Century Telephone 
22909      418        915          65   Comcast Cable Corporation 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      620       2022         512   UUNET - Commercial IP service
 3320      294       2992         228   Deutsche Telekom AG
 3301      287       1112         275   TeliaNet Sweden
 8220      279        466         267   COLT Internet - International
21502      276         40           3   NUMERICABLE is a cabled netwo
  680      253       2041         239   DFN-IP service G-WiN
 3246      226        487         221   Song Networks
13083      217         51           8   Mannesmann Datenverarbeitung 
 8708      207        119         188   Romania Data Systems S.A.
 1257      205        708         171   SWIPnet Swedish IP Network
 5515      191        842         138   Sonera Solution Autonomous Sy
 3215      186       1022          79   France Telecom Transpac
  786      176       1794         176   The JANET IP Service
 6746      174         47         139   Dynamic Network Technologies,
 8866      165         19          22   Bulgarian Telecommunication C
 3269      159       1360          70   TELECOM ITALIA
  719      158        322         104   LANLINK autonomous system
 3300      158        165          80   AUCS Communications Services 
25186      142        138         100   France Telecom Transpac's Tra
 5400      137        217         121   BT Ignite European Backbone

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6140      356        140          69   ImpSat
 8151      335        489         142   UniNet S.A. de C.V. 
16814      234         14           6   NSS, S.A. 
11172      217         99          54   Servicios Alestra S.A de C.V 
 6147      189        102          20   Telefonica Del Peru 
11664      159         19          24   Keytech SA 
 7303      149         68          22   Telecom Argentina Stet-France
 6505      136         90          92   Global One Communicaoes Ltda 
 6503      125        147          83   AVANTEL, S.A. 
14117      114          7           5   Telefonica del Sur S.A. 
11992      106          9          31   Integrated Systems 
11556       97         48           3   Cable-Wireless Panama 
13999       89         52           9   Mega Cable S.A. de C.V. 
11311       86          8          22   Sinectis S.A. 
 6535       85          7          23   Chilesat Servicios  Empresari
14420       85          6          40   ANDINATEL S.A. 
10481       82         32           7   Prima S.A. 
 4270       80         18           9   Red de Interconexion Universi
 5639       79          8           8   Telecommunications Services o
15311       78         25          37   Telefonica Empresas 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3741      268        636         226   The Internet Solution 
 5536      113         16           4   Internet Egypt Network
 2018      102        297          98   Tertiary Education Network 
 2905       77        272          70   The Internetworking Company o
20928       77         16           2   Noor Advanced Technologies AS
24835       55         34           7   RAYA Telecom - Egypt
 8452       47         20           5   TEDATA
 6713       34         38           9   Itissalat Al-MAGHRIB
 9129       33          3           2   UUNET Kenya
12455       28          7           4   Jambonet Autonomous system
 5713       27        141          24   Telkom SA Ltd 
 8524       23          1           4   AUCEGYPT Autonomous System
16637       22         10          19   Johnnic e-Ventures 
10798       18          1          12   Standard Bank of South Africa
12258       18          3          12   Vodacom Internet Company 
21280       18          2           3   Swift Global Kenya Ltd.Is an 
 8346       15          7          14   SONATEL-AS Autonomous System
15706       15          4           2   Sudatel Internet Exchange Aut
21491       15          1           3   UTL On-line is RF broadband I
15808       13          1           2   Communication Solutions Ltd i

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

  ASN   No of nets  Net Savings Description
  721      1103         794      DLA Systems Automation Center
18566       765         759      Covad Communications 
 4134       881         710      Data Communications Bureau
 4323       827         603      Time Warner Telecom
 9583       573         562      Satyam Infoway Ltd.,
 6197       834         443      BellSouth Network Solutions, 
27364       460         441      Armstrong Cable Services 
22773       431         412      Cox Communications, Inc. Atla
 5668       429         412      Century Telephone 
 6478       486         386      AT&T Worldnet Services 
 4755       454         359      Videsh Sanchar Nigam Ltd. Aut
22909       418         353      Comcast Cable Corporation 
 6467       372         341      E.Spire Communications, Inc. 
17676       393         332      XTAGE CORPORATION
 1580       334         318      ANOSCEUR 
 9929       345         310      China Netcom Corp.
 1239       920         307      Sprint 
13609       334         299      Choice One Communications Inc
 4766       576         298      Korea Internet Exchange for "
 6140       356         287      ImpSat

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

Bad AS  Designation  Network              Transit AS  Description
64826   PRIVATE       64.200.250.0/23       7911       Williams Communicati
26422   UNALLOCATED   196.46.184.0/22       3741       The Internet Solutio
65002   PRIVATE       208.179.184.0/24     11509       The Pajo Group 
65529   PRIVATE       216.21.199.0/24      14697       VDot.Net 
65529   PRIVATE       216.152.237.0/24     14697       VDot.Net 

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
192.44.0.0/19          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
192.200.100.0/24      7018     AT&T WorldNet Services

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       /10:7       /11:15      /12:60      
/13:143     /14:314     /15:575     /16:8256    /17:2381    /18:4070    
/19:9997    /20:10520   /21:8305    /22:11560   /23:12891   /24:84836   
/25:443     /26:366     /27:127     /28:62      /29:35      /30:127     
/31:0       /32:45      

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

  ASN   No of nets  Total ann.   Description
18566      750           765      Covad Communications 
 6197      680           834      BellSouth Network Solutions, 
 2386      622           849      AT&T Data Communications Serv
 7018      610          1441      AT&T WorldNet Services
27364      445           460      Armstrong Cable Services 
 9583      400           573      Satyam Infoway Ltd.,
 4766      393           576      Korea Internet Exchange for "
  702      379           620      UUNET - Commercial IP service
 5668      370           429      Century Telephone 
 1239      366           920      Sprint 
 6198      327           450      BellSouth Network Solutions, 
 1580      320           334      ANOSCEUR 
10036      294           294      C&M Communication Co. Ltd.
13609      291           334      Choice One Communications Inc
 6467      283           372      E.Spire Communications, Inc. 
 6517      283           306      Yipes Communications, Inc. 
 4323      278           827      Time Warner Telecom
21502      273           276      NUMERICABLE is a cabled netwo
 9929      270           345      China Netcom Corp.
  701      265          1060      UUNET Technologies, Inc. 

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

   4:4         8:9        12:1479     13:1        15:6        16:2      
  17:3        18:4        20:4        24:832      32:69       33:3      
  38:90       40:55       44:3        47:2        52:3        55:2      
  56:3        57:23       59:2        60:12       61:672      62:516    
  63:1852     64:2549     65:2085     66:2544     67:485      68:492    
  69:877      70:54       71:2        72:41       80:547      81:665    
  82:397      83:229      84:89       85:79      128:121     129:167    
 130:89      131:193     132:36      134:202     135:30      136:419    
 137:78      138:162     139:40      140:301     141:102     142:136    
 143:120     144:250     145:45      146:281     147:201     148:264    
 149:130     150:93      151:62      152:113     153:71      154:2      
 155:136     156:70      157:75      158:149     159:162     160:65     
 161:59      162:410     163:84      164:213     165:155     166:128    
 167:224     168:375     169:131     170:323     171:8       192:5651   
 193:3048    194:2235    195:1564    196:598     198:3826    199:3298   
 200:3941    201:44      202:5159    203:5930    204:3579    205:2067   
 206:2270    207:2621    208:2110    209:3062    210:1544    211:734    
 212:1149    213:1268    214:237     215:31      216:3725    217:1076   
 218:187     219:131     220:338     221:79      222:73     

End of report




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