[afnog] Weekly Routing Table Report

Routing Table Analysis cscora at apnic.net
Fri Apr 15 21:07:16 EAT 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 at lists.apnic.net

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

Routing Table Report   04:00 +10GMT Sat 16 Apr, 2005

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

BGP routing table entries examined:                              159923
    Prefixes after maximum aggregation:                           93150
    Unique aggregates announced to Internet:                      76898
Total ASes present in the Internet Routing Table:                 19422
Origin-only ASes present in the Internet Routing Table:           16899
Origin ASes announcing only one prefix:                            7905
Transit ASes present in the Internet Routing Table:                2523
Transit-only ASes present in the Internet Routing Table:             68
Average AS path length visible in the Internet Routing Table:       4.5
    Max AS path length visible:                                      23
Prefixes from unregistered ASNs in the Routing Table:                13
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:             14
Number of addresses announced to Internet:                   1381478720
    Equivalent to 82 /8s, 87 /16s and 177 /24s
    Percentage of available address space announced:               37.3
    Percentage of allocated address space announced:               58.5
    Percentage of available address space allocated:               63.7
Total number of prefixes smaller than registry allocations:       74677

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

Prefixes being announced by APNIC Region ASes:                    32657
    Total APNIC prefixes after maximum aggregation:               15410
Prefixes being announced from the APNIC address blocks:           30588
    Unique aggregates announced from the APNIC address blocks:    15419
APNIC Region origin ASes present in the Internet Routing Table:    2240
APNIC Region origin ASes announcing only one prefix:                652
APNIC Region transit ASes present in the Internet Routing Table:    340
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         16
Number of APNIC addresses announced to Internet:              181601920
    Equivalent to 10 /8s, 211 /16s and 6 /24s
    Percentage of available APNIC address space announced:         67.4

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  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:                     86956
    Total ARIN prefixes after maximum aggregation:                53107
Prefixes being announced from the ARIN address blocks:            67784
    Unique aggregates announced from the ARIN address blocks:     24901
ARIN Region origin ASes present in the Internet Routing Table:     9862
ARIN Region origin ASes announcing only one prefix:                3573
ARIN Region transit ASes present in the Internet Routing Table:     929
Average ARIN Region AS path length visible:                         4.3
    Max ARIN Region AS path length visible:                          21
Number of ARIN addresses announced to Internet:               244720640
    Equivalent to 14 /8s, 150 /16s and 36 /24s
    Percentage of available ARIN address space announced:          69.5

ARIN AS Blocks         1-1876, 1902-2042, 2044-2046, 2048-2106
(pre-ERX allocations)  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
                       35840-36863
ARIN Address Blocks    24/8, 63/8, 64/6, 68/7, 70/6, 198/7, 204/6,
                       208/7 and 216/8

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

Prefixes being announced by RIPE Region ASes:                     30300
    Total RIPE prefixes after maximum aggregation:                20946
Prefixes being announced from the RIPE address blocks:            27340
    Unique aggregates announced from the RIPE address blocks:     18226
RIPE Region origin ASes present in the Internet Routing Table:     6543
RIPE Region origin ASes announcing only one prefix:                3457
RIPE Region transit ASes present in the Internet Routing Table:    1092
Average RIPE Region AS path length visible:                         5.1
    Max RIPE Region AS path length visible:                          23
Number of RIPE addresses announced to Internet:               201347264
    Equivalent to 12 /8s, 0 /16s and 80 /24s
    Percentage of available RIPE address space announced:          70.6

RIPE AS Blocks         1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations)  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:                    8565
    Total LACNIC prefixes after maximum aggregation:               2979
Prefixes being announced from the LACNIC address blocks:           6989
    Unique aggregates announced from the LACNIC address blocks:    4043
LACNIC Region origin ASes present in the Internet Routing Table:    611
LACNIC Region origin ASes announcing only one prefix:               196
LACNIC Region transit ASes present in the Internet Routing Table:   115
Average LACNIC Region AS path length visible:                       5.2
    Max LACNIC Region AS path length visible:                        21
Number of LACNIC addresses announced to Internet:              18093568
    Equivalent to 1 /8s, 20 /16s and 22 /24s
    Percentage of available LACNIC address space announced:        53.9

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

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

Prefixes being announced by AfriNIC Region ASes:                   1428
    Total AfriNIC prefixes after maximum aggregation:               708
Prefixes being announced from the AfriNIC address blocks:           929
    Unique aggregates announced from the AfriNIC address blocks:    738
AfriNIC Region origin ASes present in the Internet Routing Table:   101
AfriNIC Region origin ASes announcing only one prefix:               27
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:              2205952
    Equivalent to 0 /8s, 33 /16s and 169 /24s
    Percentage of available AfriNIC address space announced:        6.6

AfriNIC AS Blocks      36864-37887 & ERX transfers
AfriNIC Address Blocks 41/8, 196/8

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 4134      901       4845         181   CHINANET-BACKBONE
 1221      775       1193         552   Telstra Pty Ltd
 9583      708         52          46   Sify Limited
 4766      586       3415         275   Korea Telecom (KIX)
 4755      545        243         112   Videsh Sanchar Nigam Ltd. Aut
 7545      484         86          70   TPG Internet Pty Ltd
17676      430       6508          72   Softbank BB Corp.
 9443      369         77          75   Primus Telecommunications
 9929      358        175          45   China Netcom Corp.
 2907      345       1838         319   SINET Japan
17557      336         24         152   Pakistan Telecom
10036      313         28         284   C&M Communication Co. Ltd.
 4808      310        251         169   CNCGROUP IP network: China169
 7474      296        268         213   SingTel Optus Pty Ltd
 4802      279         47         164   Wantree Development
 9498      268         82          52   BHARTI BT INTERNET LTD.
 2764      260        238         198   AAPT Limited
  703      256        279         210   UUNET - Commercial IP service
 9800      238        386          69   CHINA UNICOM
17974      238         63          12   PT TELEKOMUNIKASI INDONESIA

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1481       6530         963   AT&T WorldNet Services
  174     1143       5589         974   Cogent Communications
  721     1117      21747         313   DLA Systems Automation Center
 4323     1093        647         220   Time Warner Telecom
  701     1011       8282         859   UUNET Technologies, Inc. 
 1239      915       2877         662   Sprint 
 6197      892        384         414   BellSouth Network Solutions, 
 2386      842        532         623   AT&T Data Communications Serv
18566      789        224           7   Covad Communications 
  209      636       3442         492   Qwest 
20115      604        499         313   Charter Communications 
 3356      588      10854         437   Level 3 Communications, LLC 
 3561      544       2369         417   Savvis
  852      532       1095         394   Telus Advanced Communications
27364      517         43          18   Armstrong Cable Services 
 3602      507        121          92   Sprint Canada, Inc. 
 5668      489        115          25   CenturyTel Internet Holdings,
22773      477       1188          21   Cox Communications, Inc.
 6198      458        380         215   BellSouth Network Solutions, 
 6467      438        143          35   E.Spire Communications, Inc. 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      598       2003         489   UUNET - Commercial IP service
 3320      303       2993         237   Deutsche Telekom AG
 3301      295       1116         285   TeliaNet Sweden
 8220      278        472         271   COLT Telecommunications
  680      253       2041         238   DFN-IP service G-WiN
 3246      232        491         227   Song Networks
 8708      227        251         208   Romania Data Systems S.A.
 1257      198        695         174   SWIPnet Swedish IP Network
 5515      178        778         128   Sonera Solution Autonomous Sy
  786      174       1778         174   The JANET IP Service
 3269      167       1472          73   TELECOM ITALIA
 8866      164         21          12   Bulgarian Telecommunication C
 6746      161         47         141   Dynamic Network Technologies,
  719      159        340         101   LANLINK autonomous system
 3300      149        184          84   AUCS Communications Services 
 5400      144        281         127   BT Ignite European Backbone
25186      139        137          97   France Telecom Transpac's Tra
 6830      138        513          27   UPC Distribution Services
 9051      128          8          34   INCONET Autonomous System
 2856      127       2305         115   BTnet UK Regional network

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8151      351        533         145   UniNet S.A. de C.V. 
16814      265         16           7   NSS, S.A. 
11172      222         99          54   Servicios Alestra S.A de C.V 
 6147      205        102          20   Telefonica Del Peru 
19632      190         14           7   Metropolis Intercom S.A. 
 7303      157         68          21   Telecom Argentina Stet-France
11664      153         19          23   Keytech SA 
 6505      131         90          88   Global One Communicaoes Ltda 
22047      122         96           6   VTR PUNTO NET S.A. 
14117      119          8           4   Telefonica del Sur S.A. 
 6503      105        146          74   AVANTEL, S.A. 
18822      104          7          16   TELEFONICA MANQUEHUE 
13999      103         52           9   Mega Cable S.A. de C.V. 
11556       99         49           5   Cable-Wireless Panama 
19169       95          6          16   Telconet 
23216       89         24          23   RAMtelecom Telecomunicaciones
11311       85          8          21   Sinectis S.A. 
 5639       84         12           9   Telecommunications Services o
10481       82         32           7   Prima S.A. 
 4270       79         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      118         15          17   Internet Egypt Network
 2018       90        295          87   Tertiary Education Network 
20928       90         16           2   Noor Advanced Technologies AS
 2905       75        267          69   The Internetworking Company o
 8452       64         20           5   TEDATA
24835       59         34           6   RAYA Telecom - Egypt
 9129       43          3           3   UUNET Kenya
12455       43          7           4   Jambonet Autonomous system
 5713       35        141          28   Telkom SA Ltd 
 6713       35         54           9   Itissalat Al-MAGHRIB
 8524       24          1           4   AUCEGYPT Autonomous System
15475       23         84           4   Nile Online
16637       22         10          19   Johnnic e-Ventures 
10798       19          1          11   Standard Bank of South Africa
 7460       17          3           4   LIA Internet Access 
12258       17          3          11   Vodacom Internet Company 
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
    0         0       65531      *
 4323      1093         873      Time Warner Telecom
  721      1117         804      DLA Systems Automation Center
18566       789         782      Covad Communications 
 4134       901         720      CHINANET-BACKBONE
 9583       708         662      Sify Limited
27364       517         499      Armstrong Cable Services 
 6197       892         478      BellSouth Network Solutions, 
 5668       489         464      CenturyTel Internet Holdings,
22773       477         456      Cox Communications, Inc.
 4755       545         433      Videsh Sanchar Nigam Ltd. Aut
 3602       507         415      Sprint Canada, Inc. 
 7545       484         414      TPG Internet Pty Ltd
 6467       438         403      E.Spire Communications, Inc. 
17676       430         358      Softbank BB Corp.
 6140       399         327      ImpSat
 9929       358         313      China Netcom Corp.
 4766       586         311      Korea Telecom (KIX)
 9443       369         294      Primus Telecommunications
20115       604         291      Charter Communications 

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

Bad AS  Designation  Network              Transit AS  Description
65503   PRIVATE       193.125.183.0/24      3217       SIMBIRSK
30999   UNALLOCATED   196.192.80.0/24       6774       BELGACOM
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
65444   PRIVATE       212.25.125.0/24       8551       Bezeq International
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 
172.122.28.0/24        210     Utah Education Network 
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        /8:18       /9:3       /10:8       /11:15      /12:67      
/13:152     /14:308     /15:578     /16:8351    /17:2518    /18:4313    
/19:10199   /20:10936   /21:8802    /22:12150   /23:13219   /24:87403   
/25:285     /26:263     /27:139     /28:67      /29:38      /30:63      
/31:0       /32:28      

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

  ASN   No of nets  Total ann.   Description
18566      773           789      Covad Communications 
 6197      733           892      BellSouth Network Solutions, 
 7018      662          1481      AT&T WorldNet Services
 2386      597           842      AT&T Data Communications Serv
 9583      527           708      Sify Limited
 4323      511          1093      Time Warner Telecom
27364      505           517      Armstrong Cable Services 
 5668      407           489      CenturyTel Internet Holdings,
 4766      402           586      Korea Telecom (KIX)
 1239      383           915      Sprint 
  702      365           598      UUNET - Commercial IP service
 6198      336           458      BellSouth Network Solutions, 
 6467      319           438      E.Spire Communications, Inc. 
10036      313           313      C&M Communication Co. Ltd.
 6517      294           317      Yipes Communications, Inc. 
 9929      282           358      China Netcom Corp.
 7011      280           329      Citizens Utilities 
11456      271           318      Carolina Online, Inc. 
15270      253           273      PaeTec.net -a division of Pae
  174      249          1143      Cogent Communications

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

   4:4         8:11       12:1522     13:1        15:9        16:2      
  17:3        18:4        20:4        24:814      32:64       33:4      
  38:106      40:53       44:3        47:2        52:4        55:2      
  56:3        57:24       58:42       59:24       60:19       61:741    
  62:581      63:1890     64:2670     65:2079     66:2770     67:536    
  68:515      69:977      70:89       71:6        72:134      80:534    
  81:512      82:380      83:234      84:142      85:153     128:140    
 129:157     130:88      131:281     132:35      133:1       134:149    
 135:41      136:191     137:66      138:172     139:55      140:191    
 141:106     142:138     143:130     144:173     145:32      146:280    
 147:103     148:290     149:169     150:98      151:63      152:107    
 153:87      154:4       155:143     156:76      157:89      158:162    
 159:172     160:73      161:60      162:200     163:86      164:205    
 165:176     166:155     167:232     168:417     169:139     170:309    
 171:8       172:2       192:5676    193:3149    194:2332    195:1556   
 196:644     198:3936    199:3276    200:4008    201:114     202:5460   
 203:6148    204:3818    205:2030    206:2448    207:2748    208:2091   
 209:3282    210:1694    211:840     212:1185    213:1273    214:270    
 215:31      216:3582    217:1154    218:187     219:105     220:373    
 221:190     222:85     

End of report



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