Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Jul 11 13:07:42 CDT 2008


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

For historical data, please see http://thyme.apnic.net.

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

Routing Table Report   04:00 +10GMT Sat 12 Jul, 2008

Report Website:     http://thyme.apnic.net
Detailed Analysis:  http://thyme.apnic.net/current/

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

BGP routing table entries examined:                              262262
    Prefixes after maximum aggregation:                          128798
    Deaggregation factor:                                          2.04
    Unique aggregates announced to Internet:                     128001
Total ASes present in the Internet Routing Table:                 28650
    Prefixes per ASN:                                              9.15
Origin-only ASes present in the Internet Routing Table:           24985
Origin ASes announcing only one prefix:                           12092
Transit ASes present in the Internet Routing Table:                3665
Transit-only ASes present in the Internet Routing Table:             78
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      18
    Max AS path prepend of ASN ( 3816)                               15
Prefixes from unregistered ASNs in the Routing Table:               603
    Unregistered ASNs in the Routing Table:                         217
Number of 32-bit ASNs allocated by the RIRs:                         48
Prefixes from 32-bit ASNs in the Routing Table:                       8
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            781
Number of addresses announced to Internet:                   1856079840
    Equivalent to 110 /8s, 161 /16s and 135 /24s
    Percentage of available address space announced:               50.1
    Percentage of allocated address space announced:               60.8
    Percentage of available address space allocated:               82.3
    Percentage of address space in use by end-sites:               72.7
Total number of prefixes smaller than registry allocations:      127883

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

Prefixes being announced by APNIC Region ASes:                    60114
    Total APNIC prefixes after maximum aggregation:               22448
    APNIC Deaggregation factor:                                    2.68
Prefixes being announced from the APNIC address blocks:           57088
    Unique aggregates announced from the APNIC address blocks:    25456
APNIC Region origin ASes present in the Internet Routing Table:    3301
    APNIC Prefixes per ASN:                                       17.29
APNIC Region origin ASes announcing only one prefix:                879
APNIC Region transit ASes present in the Internet Routing Table:    520
Average APNIC Region AS path length visible:                        3.5
    Max APNIC Region AS path length visible:                         15
Number of APNIC addresses announced to Internet:              365086240
    Equivalent to 21 /8s, 194 /16s and 198 /24s
    Percentage of available APNIC address space announced:         77.7

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079
APNIC Address Blocks    58/8,  59/8,  60/8,  61/8, 112/8, 113/8, 114/8,
                       115/8, 116/8, 117/8, 118/8, 119/8, 120/8, 121/8,
                       122/8, 123/8, 124/8, 125/8, 126/8, 202/8, 203/8,
                       210/8, 211/8, 218/8, 219/8, 220/8, 221/8, 222/8,
                      

ARIN Region Analysis Summary
----------------------------

Prefixes being announced by ARIN Region ASes:                    120397
    Total ARIN prefixes after maximum aggregation:                65051
    ARIN Deaggregation factor:                                     1.85
Prefixes being announced from the ARIN address blocks:            90092
    Unique aggregates announced from the ARIN address blocks:     34869
ARIN Region origin ASes present in the Internet Routing Table:    12272
    ARIN Prefixes per ASN:                                         7.34
ARIN Region origin ASes announcing only one prefix:                4750
ARIN Region transit ASes present in the Internet Routing Table:    1146
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          15
Number of ARIN addresses announced to Internet:               351882784
    Equivalent to 20 /8s, 249 /16s and 78 /24s
    Percentage of available ARIN address space announced:          72.3

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, 39936-40959, 46080-47103
ARIN Address Blocks     24/8,  63/8,  64/8,  65/8,  66/8,  67/8,  68/8,
                        69/8,  70/8,  71/8,  72/8,  73/8,  74/8,  75/8,
                        76/8,  96/8,  97/8,  98/8,  99/8, 173/8, 174/8,
                       199/8, 204/8, 205/8, 206/8, 207/8, 208/8, 209/8,
                       216/8,

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

Prefixes being announced by RIPE Region ASes:                     56428
    Total RIPE prefixes after maximum aggregation:                34361
    RIPE Deaggregation factor:                                     1.64
Prefixes being announced from the RIPE address blocks:            51609
    Unique aggregates announced from the RIPE address blocks:     34670
RIPE Region origin ASes present in the Internet Routing Table:    11584
    RIPE Prefixes per ASN:                                         4.46
RIPE Region origin ASes announcing only one prefix:                6079
RIPE Region transit ASes present in the Internet Routing Table:    1742
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          18
Number of RIPE addresses announced to Internet:               365628544
    Equivalent to 21 /8s, 203 /16s and 12 /24s
    Percentage of available RIPE address space announced:          83.8

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, 38912-39935
                       40960-45055, 47104-48127
RIPE Address Blocks     62/8,  77/8,  78/8,  79/8,  80/8,  81/8,  82/8,
                        83/8,  84/8,  85/8,  86/8,  87/8,  88/8,  89/8,
                        90/8,  91/8,  92/8,  93/8,  94/8,  95/8, 193/8,
                       194/8, 195/8, 212/8, 213/8, 217/8,

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

Prefixes being announced by LACNIC Region ASes:                   20695
    Total LACNIC prefixes after maximum aggregation:               5260
    LACNIC Deaggregation factor:                                   3.93
Prefixes being announced from the LACNIC address blocks:          18843
    Unique aggregates announced from the LACNIC address blocks:   10697
LACNIC Region origin ASes present in the Internet Routing Table:    963
    LACNIC Prefixes per ASN:                                      19.57
LACNIC Region origin ASes announcing only one prefix:               311
LACNIC Region transit ASes present in the Internet Routing Table:   160
Average LACNIC Region AS path length visible:                       4.1
    Max LACNIC Region AS path length visible:                        17
Number of LACNIC addresses announced to Internet:              53584640
    Equivalent to 3 /8s, 49 /16s and 163 /24s
    Percentage of available LACNIC address space announced:        53.2

LACNIC AS Blocks       26592-26623, 27648-28671, plus ERX transfers
LACNIC Address Blocks  186/8, 187/8, 189/8, 190/8, 200/8, 201/8,

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

Prefixes being announced by AfriNIC Region ASes:                   4028
    Total AfriNIC prefixes after maximum aggregation:              1186
    AfriNIC Deaggregation factor:                                  3.40
Prefixes being announced from the AfriNIC address blocks:          4333
    Unique aggregates announced from the AfriNIC address blocks:   1861
AfriNIC Region origin ASes present in the Internet Routing Table:   239
    AfriNIC Prefixes per ASN:                                     18.13
AfriNIC Region origin ASes announcing only one prefix:               73
AfriNIC Region transit ASes present in the Internet Routing Table:   45
Average AfriNIC Region AS path length visible:                      3.9
    Max AfriNIC Region AS path length visible:                       15
Number of AfriNIC addresses announced to Internet:             12243712
    Equivalent to 0 /8s, 186 /16s and 211 /24s
    Percentage of available AfriNIC address space announced:       36.5

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
 4755     1673        342         175   Videsh Sanchar Nigam Ltd. Aut
17488     1208         83          93   Hathway IP Over Cable Interne
 9583     1152         86         477   Sify Limited
 9498     1080        550          63   BHARTI BT INTERNET LTD.
 4766      851       6390         347   Korea Telecom (KIX)
23577      831         35         704   Korea Telecom (ATM-MPLS)
 4134      823      13523         332   CHINANET-BACKBONE
 4780      704        351          63   Digital United Inc.
18101      692        167          33   Reliance Infocom Ltd Internet
 9829      599        450          12   BSNL National Internet Backbo

Complete listing at http://thyme.apnic.net/current/data-ASnet-APNIC

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  209     3008       3874         625   Qwest 
 6389     2664       3260         195   bellsouth.net, inc. 
 2386     1485        663         877   AT&T Data Communications Serv
 4323     1475       1045         377   Time Warner Telecom
 7018     1399       5823         981   AT&T WorldNet Services
 6298     1303        185         753   Cox Communicatons 
11492     1221        148          31   Cable One 
 1785     1084        510         104   AppliedTheory Corporation 
18566     1045        296          10   Covad Communications 
20115     1043       1059         557   Charter Communications 

Complete listing at http://thyme.apnic.net/current/data-ASnet-ARIN

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3292      414       1792         372   TDC Tele Danmark
 8452      348        188          11   TEDATA
 3301      333       1460         304   TeliaNet Sweden
 3320      322       7047         270   Deutsche Telekom AG
 8866      313         77          21   Bulgarian Telecommunication C
 5462      296        666          27   Telewest Broadband
 8551      287        269          38   Bezeq International
 3215      286       2758          90   France Telecom Transpac
  680      274       2047         264   DFN-IP service G-WiN
 6746      269        126         244   Dynamic Network Technologies,

Complete listing at http://thyme.apnic.net/current/data-ASnet-RIPE

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8151     1368       2588         224   UniNet S.A. de C.V. 
11830      612        299           9   Instituto Costarricense de El
22047      565        270          14   VTR PUNTO NET S.A. 
 7303      469        231          65   Telecom Argentina Stet-France
16814      426         27          10   NSS, S.A. 
 6471      414         85          48   ENTEL CHILE S.A. 
11172      408        118          71   Servicios Alestra S.A de C.V 
10620      405        106          69   TVCABLE BOGOTA 
14117      375         23           9   Telefonica del Sur S.A. 
20299      336         23          99   NEWCOM AMERICAS 

Complete listing at http://thyme.apnic.net/current/data-ASnet-LACNIC

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
24863      475         61          30   LINKdotNET AS number
20858      398         34           3   EgyNet
 3741      273        853         224   The Internet Solution 
 2018      222        206          94   Tertiary Education Network 
 6713      143        135          11   Itissalat Al-MAGHRIB
33783      135         10          12   EEPAD TISP TELECOM & INTERNET
 5713      130        556          75   Telkom SA Ltd 
 5536      120          8          17   Internet Egypt Network
29571      107         13           8   Ci Telecom Autonomous system 
33776      100          6           3   Starcomms Nigeria Limited

Complete listing at http://thyme.apnic.net/current/data-ASnet-AFRINIC

Global Per AS prefix count summary
----------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
  209     3008       3874         625   Qwest 
 6389     2664       3260         195   bellsouth.net, inc. 
 4755     1673        342         175   Videsh Sanchar Nigam Ltd. Aut
 2386     1485        663         877   AT&T Data Communications Serv
 4323     1475       1045         377   Time Warner Telecom
 7018     1399       5823         981   AT&T WorldNet Services
 8151     1368       2588         224   UniNet S.A. de C.V. 
 6298     1303        185         753   Cox Communicatons 
11492     1221        148          31   Cable One 
17488     1208         83          93   Hathway IP Over Cable Interne

Complete listing at http://thyme.apnic.net/current/data-ASnet

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

  ASN   No of nets  Net Savings Description
 6389      2664        2469      bellsouth.net, inc. 
 4755      1673        1498      Videsh Sanchar Nigam Ltd. Aut
11492      1221        1190      Cable One 
 8151      1368        1144      UniNet S.A. de C.V. 
17488      1208        1115      Hathway IP Over Cable Interne
 4323      1475        1098      Time Warner Telecom
18566      1045        1035      Covad Communications 
 9498      1080        1017      BHARTI BT INTERNET LTD.
 1785      1084         980      AppliedTheory Corporation 
22773       969         906      Cox Communications, Inc.

Complete listing at http://thyme.apnic.net/current/data-CIDRnet

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

Bad AS  Designation  Network              Transit AS  Description
16927   UNALLOCATED   12.0.252.0/23          701       UUNET Technologies, 
22492   UNALLOCATED   12.2.46.0/24          7018       AT&T WorldNet Servic
15132   UNALLOCATED   12.9.150.0/24         7018       AT&T WorldNet Servic
32567   UNALLOCATED   12.14.170.0/24        7018       AT&T WorldNet Servic
13632   UNALLOCATED   12.20.55.0/24         6517       Yipes Communications
13746   UNALLOCATED   12.24.56.0/24         7018       AT&T WorldNet Servic
32567   UNALLOCATED   12.25.107.0/24        7018       AT&T WorldNet Servic
13632   UNALLOCATED   12.31.25.0/24         6517       Yipes Communications
27220   UNALLOCATED   12.35.204.0/24        7018       AT&T WorldNet Servic
26973   UNALLOCATED   12.39.152.0/24        7018       AT&T WorldNet Servic

Complete listing at http://thyme.apnic.net/current/data-badAS

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

Network            Origin AS  Description
24.48.244.0/23        7843     Adelphia Corp. 
24.51.159.0/24        7843     Adelphia Corp. 
24.54.23.0/24         7843     Adelphia Corp. 
24.54.224.0/19       20001     HoldCo LLC - Road Runner 
24.75.160.0/19        7843     Adelphia Corp. 
24.75.192.0/18        7843     Adelphia Corp. 
24.142.40.0/21        7018     AT&T WorldNet Services
24.142.160.0/19       7018     AT&T WorldNet Services
24.246.0.0/17         7018     AT&T WorldNet Services
24.246.128.0/18       7018     AT&T WorldNet Services

Complete listing at http://thyme.apnic.net/current/data-add-IANA

Number of prefixes announced per prefix length (Global)
-------------------------------------------------------

 /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
 /7:0        /8:17       /9:9       /10:16      /11:45      /12:145     
/13:286     /14:516     /15:1037    /16:9979    /17:4327    /18:7427    
/19:15846   /20:18437   /21:18085   /22:22612   /23:23524   /24:137181  
/25:854     /26:1038    /27:781     /28:83      /29:9       /30:1       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
  209     1761          3008      Qwest 
 6389     1667          2664      bellsouth.net, inc. 
 6298     1288          1303      Cox Communicatons 
11492     1205          1221      Cable One 
 2386     1181          1485      AT&T Data Communications Serv
18566     1026          1045      Covad Communications 
17488     1022          1208      Hathway IP Over Cable Interne
 4755     1018          1673      Videsh Sanchar Nigam Ltd. Aut
 9583     1007          1152      Sify Limited
 6478      981           990      AT&T Worldnet Services 

Complete listing at http://thyme.apnic.net/current/data/sXXas-nos

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

   4:7         8:126      12:2084     13:2        15:22       16:3      
  17:5        18:13       20:35       24:1081     25:1        32:61     
  38:447      40:92       41:663      43:1        44:2        47:12     
  52:3        55:3        56:3        57:25       58:518      59:505    
  60:450      61:1002     62:1192     63:2028     64:3282     65:2382   
  66:3519     67:1229     68:712      69:2266     70:736      71:118    
  72:1900     73:5        74:1054     75:153      76:302      77:744    
  78:723      79:200      80:931      81:841      82:589      83:388    
  84:564      85:952      86:411      87:684      88:335      89:1289   
  90:14       91:1336     92:220      93:674      94:56       96:40     
  97:28       98:207      99:2       112:1       113:1       114:79     
 115:2       116:824     117:319     118:190     119:420     120:60     
 121:562     122:798     123:364     124:867     125:1160    128:362    
 129:199     130:132     131:407     132:66      133:9       134:177    
 135:32      136:222     137:83      138:146     139:94      140:490    
 141:98      142:407     143:314     144:367     145:51      146:367    
 147:158     148:516     149:198     150:130     151:190     152:144    
 153:136     154:10      155:277     156:174     157:291     158:184    
 159:237     160:279     161:118     162:219     163:187     164:523    
 165:451     166:320     167:329     168:632     169:137     170:428    
 171:32      172:10      188:1       189:271     190:2175    192:5723   
 193:4104    194:3224    195:2525    196:1046    198:3715    199:3256   
 200:5549    201:1471    202:7611    203:8047    204:3972    205:2124   
 206:2383    207:2760    208:3423    209:3494    210:2588    211:1074   
 212:1404    213:1574    214:158     215:49      216:4411    217:1201   
 218:342     219:420     220:1058    221:468     222:308    

End of report




More information about the NANOG mailing list