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Weekly Routing Table Report

  • From: Routing Table Analysis
  • Date: Fri Mar 11 13:14:10 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 12 Mar, 2005

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

BGP routing table entries examined:                              157339
    Prefixes after maximum aggregation:                           92091
    Unique aggregates announced to Internet:                      75688
Total ASes present in the Internet Routing Table:                 19118
Origin-only ASes present in the Internet Routing Table:           16630
Origin ASes announcing only one prefix:                            7761
Transit ASes present in the Internet Routing Table:                2488
Transit-only ASes present in the Internet Routing Table:             80
Average AS path length visible in the Internet Routing Table:       4.5
    Max AS path length visible:                                      21
Prefixes from unregistered ASNs in the Routing Table:                27
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:             12
Number of addresses announced to Internet:                   1383016612
    Equivalent to 82 /8s, 111 /16s and 40 /24s
    Percentage of available address space announced:               37.3
    Percentage of allocated address space announced:               59.0
    Percentage of available address space allocated:               63.2
Total number of prefixes smaller than registry allocations:       73226

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

Prefixes being announced by APNIC Region ASes:                    31587
    Total APNIC prefixes after maximum aggregation:               15168
Prefixes being announced from the APNIC address blocks:           29621
    Unique aggregates announced from the APNIC address blocks:    15037
APNIC Region origin ASes present in the Internet Routing Table:    2217
APNIC Region origin ASes announcing only one prefix:                647
APNIC Region transit ASes present in the Internet Routing Table:    330
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         15
Number of APNIC addresses announced to Internet:              176967616
    Equivalent to 10 /8s, 140 /16s and 79 /24s
    Percentage of available APNIC address space announced:         65.7

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
                       23552-24575
APNIC Address Blocks   58/7, 60/7, 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:                     87474
    Total ARIN prefixes after maximum aggregation:                53196
Prefixes being announced from the ARIN address blocks:            66929
    Unique aggregates announced from the ARIN address blocks:     24552
ARIN Region origin ASes present in the Internet Routing Table:     9922
ARIN Region origin ASes announcing only one prefix:                3589
ARIN Region transit ASes present in the Internet Routing Table:     953
Average ARIN Region AS path length visible:                         4.3
    Max ARIN Region AS path length visible:                          21
Number of ARIN addresses announced to Internet:               241091072
    Equivalent to 14 /8s, 94 /16s and 194 /24s
    Percentage of available ARIN address space announced:          71.9

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, 29696-30719, 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:                     29974
    Total RIPE prefixes after maximum aggregation:                20614
Prefixes being announced from the RIPE address blocks:            26918
    Unique aggregates announced from the RIPE address blocks:     17837
RIPE Region origin ASes present in the Internet Routing Table:     6388
RIPE Region origin ASes announcing only one prefix:                3379
RIPE Region transit ASes present in the Internet Routing Table:    1073
Average RIPE Region AS path length visible:                         5.1
    Max RIPE Region AS path length visible:                          19
Number of RIPE addresses announced to Internet:               193948496
    Equivalent to 11 /8s, 143 /16s and 107 /24s
    Percentage of available RIPE address space announced:          68.0

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, 33792-35839
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:                    6905
    Total LACNIC prefixes after maximum aggregation:               2408
Prefixes being announced from the LACNIC address blocks:           6854
    Unique aggregates announced from the LACNIC address blocks:    4019
LACNIC Region origin ASes present in the Internet Routing Table:    421
LACNIC Region origin ASes announcing only one prefix:               122
LACNIC Region transit ASes present in the Internet Routing Table:    81
Average LACNIC Region AS path length visible:                       5.1
    Max LACNIC Region AS path length visible:                        21
Number of LACNIC addresses announced to Internet:              17701376
    Equivalent to 1 /8s, 14 /16s and 26 /24s
    Percentage of available LACNIC address space announced:        52.8

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

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

Prefixes being announced by AfriNIC Region ASes:                   1372
    Total AfriNIC prefixes after maximum aggregation:               705
Prefixes being announced from the AfriNIC address blocks:           903
    Unique aggregates announced from the AfriNIC address blocks:    724
AfriNIC Region origin ASes present in the Internet Routing Table:    96
AfriNIC Region origin ASes announcing only one prefix:               24
AfriNIC Region transit ASes present in the Internet Routing Table:   14
Average AfriNIC Region AS path length visible:                      4.5
    Max AfriNIC Region AS path length visible:                       12
Number of AfriNIC addresses announced to Internet:              2181632
    Equivalent to 0 /8s, 33 /16s and 74 /24s
    Percentage of available AfriNIC address space announced:       13.0

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      888       4720         175   Data Communications Bureau
 1221      786       1188         558   Telstra Pty Ltd
 9583      610         49          25   Satyam Infoway Ltd.,
 4766      587       3416         278   Korea Internet Exchange for "
 4755      491        241         103   Videsh Sanchar Nigam Ltd. Aut
 7545      475         86          69   TPG Internet Pty Ltd
17676      408       6156          73   XTAGE CORPORATION
 9443      374         77          79   Primus Telecommunications
 9929      358        175          40   China Netcom Corp.
17557      352         25         155   Pakistan Telecom
 2907      348       1839         322   SINET Japan
10036      300         27         273   C&M Communication Co. Ltd.
 4808      299        245         160   CHINANET core WAN North
 7474      288        283         210   Optus Communications Pty Ltd
 4802      282         47         166   Wantree Development
  703      262        332         218   UUNET
 2764      255        237         203   connect.com.au pty ltd
 9498      255         82          54   BHARTI BT INTERNET LTD.
 9800      239        390          73   CHINA UNICOM
17974      235         63          12   PT TELEKOMUNIKASI INDONESIA

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1469       6563         965   AT&T WorldNet Services
  721     1120      21755         313   DLA Systems Automation Center
 4323     1052        668         220   Time Warner Telecom
  701     1027       8273         874   UUNET Technologies, Inc. 
 1239      909       2871         659   Sprint 
  174      874       5537         757   PSINet Inc. 
 6197      874        383         410   BellSouth Network Solutions, 
 2386      832        498         615   AT&T Data Communications Serv
18566      774        208           6   Covad Communications 
  209      639       3482         502   Qwest 
20115      582        482         303   Charter Communications 
 3356      579      10863         430   Level 3 Communications, LLC 
 3561      559       2373         414   Cable & Wireless USA 
  852      531       1095         400   Telus Advanced Communications
 6478      502        832         104   AT&T Worldnet Services 
 3602      501        121          93   Sprint Canada, Inc. 
22773      478       1090          24   Cox Communications, Inc. Atla
 6198      467        554         191   BellSouth Network Solutions, 
27364      465         43          18   Armstrong Cable Services 
 5668      459        115          17   Century Telephone 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      607       2006         497   UUNET - Commercial IP service
 3320      294       2992         229   Deutsche Telekom AG
 3301      291       1112         279   TeliaNet Sweden
 8220      277        466         271   COLT Internet - International
  680      254       2041         239   DFN-IP service G-WiN
 3246      228        472         223   Song Networks
 8708      223        121         201   Romania Data Systems S.A.
13083      218         51           8   Mannesmann Datenverarbeitung 
 3215      208       1058          80   France Telecom Transpac
 1257      197        710         174   SWIPnet Swedish IP Network
 9121      188        235          37   TTnet Autonomous System
 5515      177        777         127   Sonera Solution Autonomous Sy
  786      176       1794         176   The JANET IP Service
 8866      176         20          18   Bulgarian Telecommunication C
 3269      165       1456          72   TELECOM ITALIA
 3300      165        185          85   AUCS Communications Services 
 6746      162         47         143   Dynamic Network Technologies,
  719      158        322         100   LANLINK autonomous system
 5400      143        282         126   BT Ignite European Backbone
 6830      142        529          28   UPC Distribution Services

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6140      361        140          71   ImpSat
 8151      337        489         142   UniNet S.A. de C.V. 
16814      233         14           6   NSS, S.A. 
11172      223         99          54   Servicios Alestra S.A de C.V 
 6147      205        102          20   Telefonica Del Peru 
11664      148         19          23   Keytech SA 
 7303      146         66          30   Telecom Argentina Stet-France
 6505      136         90          92   Global One Communicaoes Ltda 
14117      118          7           5   Telefonica del Sur S.A. 
11992      107          9          31   Integrated Systems 
 6503      103        145          75   AVANTEL, S.A. 
13999      100         52           9   Mega Cable S.A. de C.V. 
11556       98         49           4   Cable-Wireless Panama 
11311       88          8          23   Sinectis S.A. 
 6535       87          7          23   Chilesat Servicios  Empresari
 5639       83         12           9   Telecommunications Services o
10481       80         32           7   Prima S.A. 
10292       79          6          18   TELECOMMUNICATIONS OF JAMAICA
15311       77         24          36   Telefonica Empresas 
 4270       76         18           9   Red de Interconexion Universi

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3741      268        635         225   The Internet Solution 
 5536      114         15          18   Internet Egypt Network
 2018       90        295          87   Tertiary Education Network 
20928       88         16           2   Noor Advanced Technologies AS
 2905       84        267          76   The Internetworking Company o
 8452       55         20           5   TEDATA
24835       55         34           6   RAYA Telecom - Egypt
 9129       39          3           2   UUNET Kenya
 6713       35         54           9   Itissalat Al-MAGHRIB
12455       30          7           4   Jambonet Autonomous system
 5713       27        141          24   Telkom SA Ltd 
 8524       24          1           4   AUCEGYPT Autonomous System
16637       22         10          19   Johnnic e-Ventures 
10798       19          1          11   Standard Bank of South Africa
12258       18          3          12   Vodacom Internet Company 
21280       18          2           3   Swift Global Kenya Ltd.Is an 
 8346       17         10          11   SONATEL-AS Autonomous System
15475       17         84           4   Nile Online
15808       16          1           1   Communication Solutions Ltd i
21491       16          1           3   UTL On-line is RF broadband I

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

  ASN   No of nets  Net Savings Description
 4323      1052         832      Time Warner Telecom
  721      1120         807      DLA Systems Automation Center
18566       774         768      Covad Communications 
 4134       888         713      Data Communications Bureau
 9583       610         585      Satyam Infoway Ltd.,
 6197       874         464      BellSouth Network Solutions, 
22773       478         454      Cox Communications, Inc. Atla
27364       465         447      Armstrong Cable Services 
 5668       459         442      Century Telephone 
 3602       501         408      Sprint Canada, Inc. 
 7545       475         406      TPG Internet Pty Ltd
 6478       502         398      AT&T Worldnet Services 
 4755       491         388      Videsh Sanchar Nigam Ltd. Aut
17676       408         335      XTAGE CORPORATION
 6467       359         326      E.Spire Communications, Inc. 
 9929       358         318      China Netcom Corp.
 4766       587         309      Korea Internet Exchange for "
 9443       374         295      Primus Telecommunications
 6140       361         290      ImpSat
20115       582         279      Charter Communications 

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

Bad AS  Designation  Network              Transit AS  Description
25695   UNALLOCATED   64.57.112.0/20        5713       Telkom SA Ltd 
65535   PRIVATE       64.111.161.0/24      33205       KMC Telecom Solution
65535   PRIVATE       64.111.162.0/24      33205       KMC Telecom Solution
65535   PRIVATE       64.111.164.0/24      33205       KMC Telecom Solution
65535   PRIVATE       64.111.165.0/24      33205       KMC Telecom Solution
65535   PRIVATE       64.111.167.0/24      33205       KMC Telecom Solution
65535   PRIVATE       64.111.169.0/24      33205       KMC Telecom Solution
65535   PRIVATE       64.111.170.0/24      33205       KMC Telecom Solution
65535   PRIVATE       64.111.171.0/24      33205       KMC Telecom Solution
65535   PRIVATE       64.111.172.0/24      33205       KMC Telecom Solution
65535   PRIVATE       64.111.173.0/24      33205       KMC Telecom Solution
65535   PRIVATE       64.111.174.0/24      33205       KMC Telecom Solution
65535   PRIVATE       64.111.175.0/24      33205       KMC Telecom Solution
64826   PRIVATE       64.200.250.0/23       7911       Williams Communicati
40439   UNALLOCATED   66.194.101.0/24      30439       Memphis Daily News 
64500   RESERVED      85.114.96.0/21        1680       NetVision Ltd.
65503   PRIVATE       193.125.183.0/24      3217       SIMBIRSK
65004   PRIVATE       200.0.113.0/24       28477       Universidad Autonoma
65004   PRIVATE       200.4.0.0/24         28477       Universidad Autonoma
65004   PRIVATE       200.4.1.0/24         28477       Universidad Autonoma
65004   PRIVATE       200.4.2.0/24         28477       Universidad Autonoma
65004   PRIVATE       200.4.3.0/24         28477       Universidad Autonoma
65004   PRIVATE       200.4.4.0/24         28477       Universidad Autonoma
65004   PRIVATE       200.4.5.0/24         28477       Universidad Autonoma
65004   PRIVATE       200.4.6.0/24         28477       Universidad Autonoma
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
192.43.230.0/24       7575     Australian Academic and Rease
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 
192.84.205.0/24        719     LANLINK autonomous system
192.119.135.0/24       270     NASA 
192.135.50.0/24       7018     AT&T WorldNet Services
192.172.0.0/19         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       /10:8       /11:14      /12:62      
/13:148     /14:306     /15:570     /16:8323    /17:2454    /18:4172    
/19:10104   /20:10787   /21:8672    /22:11991   /23:13136   /24:85756   
/25:264     /26:248     /27:103     /28:51      /29:25      /30:85      
/31:0       /32:38      

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

  ASN   No of nets  Total ann.   Description
18566      759           774      Covad Communications 
 6197      715           874      BellSouth Network Solutions, 
 7018      639          1469      AT&T WorldNet Services
 2386      588           832      AT&T Data Communications Serv
 4323      485          1052      Time Warner Telecom
27364      450           465      Armstrong Cable Services 
 9583      434           610      Satyam Infoway Ltd.,
 4766      403           587      Korea Internet Exchange for "
 5668      383           459      Century Telephone 
 1239      372           909      Sprint 
  702      369           607      UUNET - Commercial IP service
 6198      335           467      BellSouth Network Solutions, 
10036      300           300      C&M Communication Co. Ltd.
 6517      288           310      Yipes Communications, Inc. 
 9929      282           358      China Netcom Corp.
 6467      270           359      E.Spire Communications, Inc. 
11456      263           310      Carolina Online, Inc. 
  701      246          1027      UUNET Technologies, Inc. 
13609      246           290      Choice One Communications Inc
15270      243           262      PaeTec.net -a division of Pae

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

   4:4         8:10       12:1503     13:1        15:9        16:2      
  17:3        18:4        20:5        24:737      32:64       33:5      
  38:99       40:55       44:3        47:2        52:3        55:2      
  56:3        57:24       58:4        59:6        60:21       61:737    
  62:515      63:1885     64:2609     65:2058     66:2699     67:501    
  68:506      69:921      70:70       71:5        72:103      80:543    
  81:534      82:340      83:264      84:130      85:161     128:143    
 129:159     130:88      131:280     132:35      133:1       134:142    
 135:32      136:190     137:66      138:157     139:50      140:198    
 141:102     142:142     143:130     144:176     145:45      146:280    
 147:98      148:269     149:164     150:97      151:63      152:110    
 153:85      154:3       155:140     156:69      157:85      158:158    
 159:168     160:72      161:60      162:202     163:86      164:213    
 165:160     166:128     167:228     168:401     169:133     170:311    
 171:9       192:5654    193:3120    194:2291    195:1592    196:634    
 198:3912    199:3253    200:4011    201:56      202:5298    203:6055   
 204:3703    205:2015    206:2366    207:2745    208:2086    209:3139   
 210:1608    211:801     212:1172    213:1264    214:242     215:31     
 216:3664    217:1107    218:193     219:115     220:370     221:105    
 222:76     

End of report




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