[afnog] Weekly Routing Table Report

Routing Table Analysis cscora at apnic.net
Fri Jul 15 21:06:51 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 Jul, 2005

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

BGP routing table entries examined:                              166896
    Prefixes after maximum aggregation:                           96467
    Unique aggregates announced to Internet:                      81009
Total ASes present in the Internet Routing Table:                 20080
Origin-only ASes present in the Internet Routing Table:           17496
Origin ASes announcing only one prefix:                            8218
Transit ASes present in the Internet Routing Table:                2584
Transit-only ASes present in the Internet Routing Table:             74
Average AS path length visible in the Internet Routing Table:       4.5
    Max AS path length visible:                                      26
Prefixes from unregistered ASNs in the Routing Table:                18
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:             15
Number of addresses announced to Internet:                   1394583136
    Equivalent to 83 /8s, 31 /16s and 166 /24s
    Percentage of available address space announced:               37.6
    Percentage of allocated address space announced:               56.7
    Percentage of available address space allocated:               66.4
Total number of prefixes smaller than registry allocations:       79203

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

Prefixes being announced by APNIC Region ASes:                    34754
    Total APNIC prefixes after maximum aggregation:               16139
Prefixes being announced from the APNIC address blocks:           32622
    Unique aggregates announced from the APNIC address blocks:    16618
APNIC Region origin ASes present in the Internet Routing Table:    2313
APNIC Region origin ASes announcing only one prefix:                673
APNIC Region transit ASes present in the Internet Routing Table:    356
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         17
Number of APNIC addresses announced to Internet:              190697344
    Equivalent to 11 /8s, 93 /16s and 207 /24s
    Percentage of available APNIC address space announced:         70.8

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911
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:                     89316
    Total ARIN prefixes after maximum aggregation:                54483
Prefixes being announced from the ARIN address blocks:            69778
    Unique aggregates announced from the ARIN address blocks:     25819
ARIN Region origin ASes present in the Internet Routing Table:    10085
ARIN Region origin ASes announcing only one prefix:                3711
ARIN Region transit ASes present in the Internet Routing Table:     939
Average ARIN Region AS path length visible:                         4.3
    Max ARIN Region AS path length visible:                          20
Number of ARIN addresses announced to Internet:               252904960
    Equivalent to 15 /8s, 19 /16s and 6 /24s
    Percentage of available ARIN address space announced:          62.8

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, 74/7, 76/8,
                       198/7, 204/6, 208/7 and 216/8

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

Prefixes being announced by RIPE Region ASes:                     32031
    Total RIPE prefixes after maximum aggregation:                21901
Prefixes being announced from the RIPE address blocks:            29041
    Unique aggregates announced from the RIPE address blocks:     19493
RIPE Region origin ASes present in the Internet Routing Table:     6859
RIPE Region origin ASes announcing only one prefix:                3609
RIPE Region transit ASes present in the Internet Routing Table:    1126
Average RIPE Region AS path length visible:                         5.2
    Max RIPE Region AS path length visible:                          26
Number of RIPE addresses announced to Internet:               211826880
    Equivalent to 12 /8s, 160 /16s and 56 /24s
    Percentage of available RIPE address space announced:          63.1

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, 88/6, 188/8, 193/8, 194/7, 212/7
                       and 217/8

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

Prefixes being announced by LACNIC Region ASes:                    9130
    Total LACNIC prefixes after maximum aggregation:               3170
Prefixes being announced from the LACNIC address blocks:           7483
    Unique aggregates announced from the LACNIC address blocks:    4338
LACNIC Region origin ASes present in the Internet Routing Table:    624
LACNIC Region origin ASes announcing only one prefix:               188
LACNIC Region transit ASes present in the Internet Routing Table:   116
Average LACNIC Region AS path length visible:                       5.2
    Max LACNIC Region AS path length visible:                        21
Number of LACNIC addresses announced to Internet:              20440864
    Equivalent to 1 /8s, 55 /16s and 231 /24s
    Percentage of available LACNIC address space announced:        30.5

LACNIC AS Blocks       26592-26623, 27648-28671, plus ERX transfers
LACNIC Address Blocks  189/8, 190/8, 200/7

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

Prefixes being announced by AfriNIC Region ASes:                   1641
    Total AfriNIC prefixes after maximum aggregation:               774
Prefixes being announced from the AfriNIC address blocks:          1025
    Unique aggregates announced from the AfriNIC address blocks:    789
AfriNIC Region origin ASes present in the Internet Routing Table:   131
AfriNIC Region origin ASes announcing only one prefix:               37
AfriNIC Region transit ASes present in the Internet Routing Table:   16
Average AfriNIC Region AS path length visible:                      4.6
    Max AfriNIC Region AS path length visible:                       12
Number of AfriNIC addresses announced to Internet:              2327296
    Equivalent to 0 /8s, 35 /16s and 131 /24s
    Percentage of available AfriNIC address space announced:        6.9

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      927       5566         194   CHINANET-BACKBONE
 9583      762         57          86   Sify Limited
 1221      759       1454         534   Telstra Pty Ltd
 4755      659        248         147   Videsh Sanchar Nigam Ltd. Aut
 4766      591       3413         279   Korea Telecom (KIX)
 7545      508        106          74   TPG Internet Pty Ltd
17676      437       6590          76   Softbank BB Corp.
 9443      375         78          76   Primus Telecommunications
 9929      367        223          49   China Netcom Corp.
 2907      337       1789         314   SINET Japan
 9498      336         83          61   BHARTI BT INTERNET LTD.
17557      327         23         154   Pakistan Telecom
 7474      309        272         213   SingTel Optus Pty Ltd
 4802      288         50         165   Wantree Development
 4808      283        243         166   CNCGROUP IP network: China169
 9837      279         80         183   Powertel Ltd
10036      278         59         244   C&M Communication Co. Ltd.
18302      276        109         156   SK Global co., Ltd
17974      270         65          14   PT TELEKOMUNIKASI INDONESIA
17488      264         15          18   Hathway IP Over Cable Interne

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1499       6417         973   AT&T WorldNet Services
  174     1140       5808        1061   Cogent Communications
 4323     1131        664         222   Time Warner Telecom
  721     1096      21787         311   DLA Systems Automation Center
  701     1014       8168         857   UUNET Technologies, Inc. 
 6197      939        522         433   BellSouth Network Solutions, 
 2386      896        529         661   AT&T Data Communications Serv
 1239      885       2876         637   Sprint 
18566      827        224           7   Covad Communications 
20115      649        498         320   Charter Communications 
  209      626       3507         496   Qwest 
 3356      565      10779         434   Level 3 Communications, LLC 
27364      554         44          18   Armstrong Cable Services 
 3602      544        123         104   Sprint Canada, Inc. 
  852      542       1094         388   Telus Advanced Communications
 3561      537       2384         421   Savvis
 7725      505         64          17   MediaOne 
22773      502       1188          23   Cox Communications, Inc.
 5668      493        114          25   CenturyTel Internet Holdings,
 6198      466        396         224   BellSouth Network Solutions, 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      592       1999         483   UUNET - Commercial IP service
 3320      303       3232         242   Deutsche Telekom AG
 3301      300       1081         286   TeliaNet Sweden
 8220      265        472         261   COLT Telecommunications
  680      245       2041         241   DFN-IP service G-WiN
 3246      230        469         223   Song Networks
 8708      224        253         210   Romania Data Systems S.A.
 1257      194        712         172   SWIPnet Swedish IP Network
 5515      180        778         127   Sonera Solution Autonomous Sy
  786      175       1794         175   The JANET IP Service
 5400      173        286         146   BT Ignite European Backbone
 6746      173         49         151   Dynamic Network Technologies,
 3269      169       1520          72   TELECOM ITALIA
  719      168        340         100   LANLINK autonomous system
 8866      162         21          11   Bulgarian Telecommunication C
 3300      153        184          86   AUCS Communications Services 
 6830      149        537          31   UPC Distribution Services
 9121      148        271          34   TTnet Autonomous System
25186      142        145          99   France Telecom Transpac's Tra
 3352      139       1272          35   Ibernet, Internet Access Netw

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8151      379        599         159   UniNet S.A. de C.V. 
16814      265         16           7   NSS, S.A. 
11172      232         99          59   Servicios Alestra S.A de C.V 
11664      210         20          22   Keytech SA 
 6147      190        110          21   Telefonica Del Peru 
14117      152          9           5   Telefonica del Sur S.A. 
 7303      150         69          18   Telecom Argentina Stet-France
19632      142         14           5   Metropolis Intercom S.A. 
22047      132        112           7   VTR PUNTO NET S.A. 
11556      131         64           3   Cable-Wireless Panama 
 6505      130         90          87   Global One Communicaoes Ltda 
 6503      115        147          73   AVANTEL, S.A. 
19169      115          7          22   Telconet 
13999      111         52           9   Mega Cable S.A. de C.V. 
18822      110          7          14   TELEFONICA MANQUEHUE 
10481      101         40           7   Prima S.A. 
23216       99         24          23   RAMtelecom Telecomunicaciones
 5639       96         12           9   Telecommunications Services o
22927       96         73          25   TELEFONICA DE ARGENTINA 
21826       95         13          20   INTERCABLE 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3741      264        621         222   The Internet Solution 
 5536      120         15          17   Internet Egypt Network
 2018       95        295          86   Tertiary Education Network 
 8452       92         28           6   TEDATA
 2905       75        266          67   The Internetworking Company o
24835       57         34           6   RAYA Telecom - Egypt
 6713       51         54           8   Itissalat Al-MAGHRIB
15475       49         84           4   Nile Online
20928       46         16           2   Noor Advanced Technologies AS
 9129       43          3           3   UUNET Kenya
12455       38          6           3   Jambonet Autonomous system
 5713       36        142          29   Telkom SA Ltd 
15706       31          8           3   Sudatel Internet Exchange Aut
 8524       25          1           4   AUCEGYPT Autonomous System
16637       22         10          19   Johnnic e-Ventures 
23889       20          5           9   MAURITIUS TELECOM
10798       19          1          11   Standard Bank of South Africa
21491       18          1           1   UTL On-line is RF broadband I
12258       17          3          11   Vodacom Internet Company 
15808       17          2           2   Communication Solutions Ltd i

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

  ASN   No of nets  Net Savings Description
 4323      1131         909      Time Warner Telecom
18566       827         820      Covad Communications 
  721      1096         785      DLA Systems Automation Center
 4134       927         733      CHINANET-BACKBONE
 9583       762         676      Sify Limited
27364       554         536      Armstrong Cable Services 
 4755       659         512      Videsh Sanchar Nigam Ltd. Aut
 6197       939         506      BellSouth Network Solutions, 
 7725       505         488      MediaOne 
22773       502         479      Cox Communications, Inc.
 5668       493         468      CenturyTel Internet Holdings,
 3602       544         440      Sprint Canada, Inc. 
 7545       508         434      TPG Internet Pty Ltd
17676       437         361      Softbank BB Corp.
 6467       381         347      E.Spire Communications, Inc. 
20115       649         329      Charter Communications 
 9929       367         318      China Netcom Corp.
 4766       591         312      Korea Telecom (KIX)
19262       431         312      Verizon Global Networks 
 9443       375         299      Primus Telecommunications

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

Bad AS  Designation  Network              Transit AS  Description
65050   PRIVATE       168.96.148.0/24       6140       ImpSat
65507   PRIVATE       200.0.64.0/24        27750       Cooperación Latino A
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
65004   PRIVATE       200.4.7.0/24         28477       Universidad Autonoma
65142   PRIVATE       200.32.76.0/24        6140       ImpSat
65142   PRIVATE       200.32.77.0/24        6140       ImpSat
64512   PRIVATE       200.61.48.0/20       11664       Keytech SA 
64512   PRIVATE       200.61.58.0/23       11664       Keytech SA 
64512   PRIVATE       200.80.148.0/23      11664       Keytech SA 
65201   PRIVATE       201.30.243.0/24       4230       Embratel 
65005   PRIVATE       203.200.197.0/24      4755       Videsh Sanchar Nigam

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

Network            Origin AS  Description
50.160.0.0/13         1221     Telstra Pty Ltd
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 
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
192.169.0.0/23        3970     RGnet, Inc. 
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        /8:17       /9:3       /10:8       /11:15      /12:75      
/13:162     /14:313     /15:602     /16:8440    /17:2637    /18:4526    
/19:10487   /20:11409   /21:9463    /22:12925   /23:13874   /24:90893   
/25:361     /26:311     /27:182     /28:59      /29:27      /30:79      
/31:0       /32:28      

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

  ASN   No of nets  Total ann.   Description
18566      811           827      Covad Communications 
 6197      765           939      BellSouth Network Solutions, 
 7018      708          1499      AT&T WorldNet Services
 2386      610           896      AT&T Data Communications Serv
 9583      579           762      Sify Limited
27364      545           554      Armstrong Cable Services 
 4323      536          1131      Time Warner Telecom
 7725      475           505      MediaOne 
 4766      409           591      Korea Telecom (KIX)
 5668      401           493      CenturyTel Internet Holdings,
 1239      371           885      Sprint 
  702      365           592      UUNET - Commercial IP service
 6198      341           466      BellSouth Network Solutions, 
 7011      324           375      Citizens Utilities 
15270      296           321      PaeTec.net -a division of Pae
 6517      291           314      Yipes Communications, Inc. 
 9929      282           367      China Netcom Corp.
20115      281           649      Charter Communications 
11456      274           313      Carolina Online, Inc. 
  701      268          1014      UUNET Technologies, Inc. 

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

   4:6         8:23        9:1        12:1553     13:1        15:9      
  16:2        17:3        18:3        20:4        24:1178     30:2      
  32:69       33:3        38:137      40:54       44:3        47:2      
  52:4        55:2        56:3        57:23       58:151      59:51     
  60:64       61:779      62:625      63:1888     64:2782     65:2076   
  66:2905     67:623      68:552      69:1101     70:145      71:10     
  72:268      80:595      81:571      82:431      83:287      84:213    
  85:283      86:57       87:17      128:179     129:169     130:88     
 131:294     132:41      133:1       134:145     135:43      136:137    
 137:74      138:166     139:60      140:300     141:106     142:153    
 143:139     144:201     145:33      146:289     147:109     148:305    
 149:175     150:107     151:65      152:108     153:88      154:4      
 155:142     156:78      157:100     158:160     159:169     160:78     
 161:71      162:217     163:93      164:195     165:187     166:157    
 167:245     168:437     169:146     170:320     171:8       172:1      
 190:1       192:5704    193:3212    194:2428    195:1589    196:673    
 198:3900    199:3287    200:4049    201:205     202:5905    203:6395   
 204:3797    205:2010    206:2446    207:2808    208:2047    209:3291   
 210:1759    211:832     212:1254    213:1334    214:267     215:31     
 216:3494    217:1126    218:206     219:153     220:394     221:234    
 222:120    

End of report



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