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Weekly Routing Table Report

  • From: Routing Table Analysis
  • Date: Fri Mar 18 13:10:37 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 19 Mar, 2005

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

BGP routing table entries examined:                              157975
    Prefixes after maximum aggregation:                           92333
    Unique aggregates announced to Internet:                      76032
Total ASes present in the Internet Routing Table:                 19179
Origin-only ASes present in the Internet Routing Table:           16690
Origin ASes announcing only one prefix:                            7773
Transit ASes present in the Internet Routing Table:                2489
Transit-only ASes present in the Internet Routing Table:             77
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:                30
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:             14
Number of addresses announced to Internet:                   1386736677
    Equivalent to 82 /8s, 167 /16s and 236 /24s
    Percentage of available address space announced:               37.4
    Percentage of allocated address space announced:               59.2
    Percentage of available address space allocated:               63.2
Total number of prefixes smaller than registry allocations:       73656

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

Prefixes being announced by APNIC Region ASes:                    31730
    Total APNIC prefixes after maximum aggregation:               15189
Prefixes being announced from the APNIC address blocks:           29767
    Unique aggregates announced from the APNIC address blocks:    15218
APNIC Region origin ASes present in the Internet Routing Table:    2223
APNIC Region origin ASes announcing only one prefix:                648
APNIC Region transit ASes present in the Internet Routing Table:    329
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         15
Number of APNIC addresses announced to Internet:              178488768
    Equivalent to 10 /8s, 163 /16s and 133 /24s
    Percentage of available APNIC address space announced:         66.2

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:                     87847
    Total ARIN prefixes after maximum aggregation:                53334
Prefixes being announced from the ARIN address blocks:            67238
    Unique aggregates announced from the ARIN address blocks:     24648
ARIN Region origin ASes present in the Internet Routing Table:     9948
ARIN Region origin ASes announcing only one prefix:                3596
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:                          17
Number of ARIN addresses announced to Internet:               242177536
    Equivalent to 14 /8s, 111 /16s and 86 /24s
    Percentage of available ARIN address space announced:          72.2

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:                     30075
    Total RIPE prefixes after maximum aggregation:                20703
Prefixes being announced from the RIPE address blocks:            27030
    Unique aggregates announced from the RIPE address blocks:     17906
RIPE Region origin ASes present in the Internet Routing Table:     6417
RIPE Region origin ASes announcing only one prefix:                3382
RIPE Region transit ASes present in the Internet Routing Table:    1081
Average RIPE Region AS path length visible:                         5.1
    Max RIPE Region AS path length visible:                          20
Number of RIPE addresses announced to Internet:               195233488
    Equivalent to 11 /8s, 163 /16s and 6 /24s
    Percentage of available RIPE address space announced:          68.5

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
                       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:                    6923
    Total LACNIC prefixes after maximum aggregation:               2410
Prefixes being announced from the LACNIC address blocks:           6886
    Unique aggregates announced from the LACNIC address blocks:    4027
LACNIC Region origin ASes present in the Internet Routing Table:    425
LACNIC Region origin ASes announcing only one prefix:               125
LACNIC Region transit ASes present in the Internet Routing Table:    83
Average LACNIC Region AS path length visible:                       5.1
    Max LACNIC Region AS path length visible:                        21
Number of LACNIC addresses announced to Internet:              17796096
    Equivalent to 1 /8s, 15 /16s and 140 /24s
    Percentage of available LACNIC address space announced:        53.0

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

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

Prefixes being announced by AfriNIC Region ASes:                   1373
    Total AfriNIC prefixes after maximum aggregation:               697
Prefixes being announced from the AfriNIC address blocks:           894
    Unique aggregates announced from the AfriNIC address blocks:    717
AfriNIC Region origin ASes present in the Internet Routing Table:    95
AfriNIC Region origin ASes announcing only one prefix:               22
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:              2187264
    Equivalent to 0 /8s, 33 /16s and 96 /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      893       4729         176   Data Communications Bureau
 1221      785       1187         558   Telstra Pty Ltd
 9583      622         50          29   Satyam Infoway Ltd.,
 4766      582       3415         276   Korea Internet Exchange for "
 4755      501        242         106   Videsh Sanchar Nigam Ltd. Aut
 7545      477         86          70   TPG Internet Pty Ltd
17676      417       6300          76   XTAGE CORPORATION
 9443      374         77          79   Primus Telecommunications
 9929      358        175          45   China Netcom Corp.
17557      358         25         158   Pakistan Telecom
 2907      347       1823         321   SINET Japan
10036      300         27         273   C&M Communication Co. Ltd.
 4808      299        245         160   CHINANET core WAN North
 7474      290        283         211   Optus Communications Pty Ltd
 4802      282         47         166   Wantree Development
 9498      259         82          53   BHARTI BT INTERNET LTD.
  703      257        280         214   UUNET
 2764      256        238         204   connect.com.au pty ltd
 9800      236        387          70   CHINA UNICOM
 9942      215         69         113   COMindico Australia

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1464       6561         960   AT&T WorldNet Services
  721     1119      21755         313   DLA Systems Automation Center
 4323     1070        668         221   Time Warner Telecom
  701     1030       8272         876   UUNET Technologies, Inc. 
  174      925       5569         784   PSINet Inc. 
 1239      914       2872         659   Sprint 
 6197      878        383         411   BellSouth Network Solutions, 
 2386      833        501         614   AT&T Data Communications Serv
18566      778        208           6   Covad Communications 
  209      638       3474         502   Qwest 
20115      586        486         306   Charter Communications 
 3356      578      10863         429   Level 3 Communications, LLC 
 3561      555       2370         414   Cable & Wireless USA 
  852      540       1095         400   Telus Advanced Communications
 3602      506        121          93   Sprint Canada, Inc. 
 6478      499        832         108   AT&T Worldnet Services 
22773      481       1218          25   Cox Communications, Inc. Atla
 6198      468        554         196   BellSouth Network Solutions, 
27364      465         43          18   Armstrong Cable Services 
 5668      460        115          17   Century Telephone 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      605       2005         495   UUNET - Commercial IP service
 3320      295       2992         230   Deutsche Telekom AG
 3301      289       1112         279   TeliaNet Sweden
 8220      277        466         271   COLT Internet - International
  680      254       2041         239   DFN-IP service G-WiN
 3246      230        475         224   Song Networks
 8708      226        251         204   Romania Data Systems S.A.
13083      218         51           8   Mannesmann Datenverarbeitung 
 9121      197        237          39   TTnet Autonomous System
 1257      196        710         173   SWIPnet Swedish IP Network
 5515      178        778         128   Sonera Solution Autonomous Sy
  786      176       1794         176   The JANET IP Service
 8866      173         19          20   Bulgarian Telecommunication C
 3269      166       1456          72   TELECOM ITALIA
 6746      160         47         141   Dynamic Network Technologies,
  719      157        322          99   LANLINK autonomous system
 3300      152        184          85   AUCS Communications Services 
 6830      143        529          28   UPC Distribution Services
25186      143        138         101   France Telecom Transpac's Tra
 5400      141        281         125   BT Ignite European Backbone

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6140      381        140          72   ImpSat
 8151      334        488         139   UniNet S.A. de C.V. 
16814      233         14           6   NSS, S.A. 
11172      215         99          53   Servicios Alestra S.A de C.V 
 6147      205        102          20   Telefonica Del Peru 
11664      148         19          23   Keytech SA 
 7303      147         67          31   Telecom Argentina Stet-France
 6505      135         90          91   Global One Communicaoes Ltda 
14117      118          7           5   Telefonica del Sur S.A. 
11992      107          9          31   Integrated Systems 
 6503      103        145          73   AVANTEL, S.A. 
13999      100         52           9   Mega Cable S.A. de C.V. 
11556       98         49           4   Cable-Wireless Panama 
 6535       87          7          23   Chilesat Servicios  Empresari
11311       86          8          22   Sinectis S.A. 
 5639       84         12           9   Telecommunications Services o
10481       80         32           7   Prima S.A. 
 4270       77         18           9   Red de Interconexion Universi
15311       77         24          36   Telefonica Empresas 
 7738       75        298          16   Telecomunicacoes da Bahia S.A

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       74        266          68   The Internetworking Company o
 8452       55         20           5   TEDATA
24835       55         34           6   RAYA Telecom - Egypt
12455       41          7           4   Jambonet Autonomous system
 9129       39          3           2   UUNET Kenya
 6713       35         54           9   Itissalat Al-MAGHRIB
 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
15808       16          1           1   Communication Solutions Ltd i
21491       16          1           3   UTL On-line is RF broadband I
15706       15          4           2   Sudatel Internet Exchange Aut

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

  ASN   No of nets  Net Savings Description
 4323      1070         849      Time Warner Telecom
  721      1119         806      DLA Systems Automation Center
18566       778         772      Covad Communications 
 4134       893         717      Data Communications Bureau
 9583       622         593      Satyam Infoway Ltd.,
 6197       878         467      BellSouth Network Solutions, 
22773       481         456      Cox Communications, Inc. Atla
27364       465         447      Armstrong Cable Services 
 5668       460         443      Century Telephone 
 3602       506         413      Sprint Canada, Inc. 
 7545       477         407      TPG Internet Pty Ltd
 4755       501         395      Videsh Sanchar Nigam Ltd. Aut
 6478       499         391      AT&T Worldnet Services 
 6467       408         375      E.Spire Communications, Inc. 
17676       417         341      XTAGE CORPORATION
 9929       358         313      China Netcom Corp.
 6140       381         309      ImpSat
 4766       582         306      Korea Internet Exchange for "
 9443       374         295      Primus Telecommunications
20115       586         280      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
30998   UNALLOCATED   65.120.56.0/21         209       Qwest 
40439   UNALLOCATED   66.194.101.0/24      30439       Memphis Daily News 
64500   RESERVED      85.114.96.0/21        1680       NetVision Ltd.
24261   UNALLOCATED   133.67.0.0/16         9351       Tsu Cable Television
65503   PRIVATE       193.125.183.0/24      3217       SIMBIRSK
30998   UNALLOCATED   196.207.0.0/20         209       Qwest 
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
172.32.0.0/24         7011     Citizens Utilities 
191.250.0.1/32         668     Defense Research and Engineer
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      
/13:152     /14:305     /15:573     /16:8321    /17:2477    /18:4186    
/19:10131   /20:10825   /21:8727    /22:12051   /23:13167   /24:86110   
/25:264     /26:257     /27:110     /28:53      /29:26      /30:90      
/31:0       /32:44      

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

  ASN   No of nets  Total ann.   Description
18566      763           778      Covad Communications 
 6197      719           878      BellSouth Network Solutions, 
 7018      638          1464      AT&T WorldNet Services
 2386      586           833      AT&T Data Communications Serv
 4323      492          1070      Time Warner Telecom
27364      450           465      Armstrong Cable Services 
 9583      443           622      Satyam Infoway Ltd.,
 4766      399           582      Korea Internet Exchange for "
 5668      383           460      Century Telephone 
 1239      378           914      Sprint 
  702      368           605      UUNET - Commercial IP service
 6198      336           468      BellSouth Network Solutions, 
 6467      305           408      E.Spire Communications, Inc. 
10036      300           300      C&M Communication Co. Ltd.
 6517      289           311      Yipes Communications, Inc. 
 9929      282           358      China Netcom Corp.
 7011      280           329      Citizens Utilities 
11456      263           310      Carolina Online, Inc. 
  701      250          1030      UUNET Technologies, Inc. 
15270      247           266      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        24:740      32:64       33:5      
  38:101      40:55       44:3        47:2        52:3        55:2      
  56:3        57:24       58:4        59:10       60:24       61:739    
  62:526      63:1879     64:2633     65:2069     66:2730     67:509    
  68:506      69:926      70:73       71:5        72:124      80:530    
  81:512      82:345      83:249      84:129      85:174     128:148    
 129:158     130:89      131:280     132:34      133:1       134:144    
 135:34      136:190     137:66      138:158     139:50      140:196    
 141:104     142:139     143:129     144:172     145:45      146:281    
 147:98      148:294     149:166     150:97      151:63      152:110    
 153:85      154:3       155:142     156:69      157:87      158:167    
 159:167     160:71      161:60      162:198     163:86      164:215    
 165:153     166:127     167:229     168:409     169:133     170:312    
 171:8       172:1       192:5657    193:3116    194:2300    195:1600   
 196:623     198:3922    199:3264    200:4029    201:57      202:5337   
 203:6083    204:3725    205:2023    206:2369    207:2699    208:2068   
 209:3199    210:1630    211:821     212:1182    213:1273    214:242    
 215:31      216:3681    217:1120    218:193     219:113     220:370    
 221:111     222:65     

End of report




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