Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Jul 4 13:07:20 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 05 Jul, 2008

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

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

BGP routing table entries examined:                              262004
    Prefixes after maximum aggregation:                          128698
    Deaggregation factor:                                          2.04
    Unique aggregates announced to Internet:                     127630
Total ASes present in the Internet Routing Table:                 28612
    Prefixes per ASN:                                              9.16
Origin-only ASes present in the Internet Routing Table:           24946
Origin ASes announcing only one prefix:                           12067
Transit ASes present in the Internet Routing Table:                3666
Transit-only ASes present in the Internet Routing Table:             81
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:               602
    Unregistered ASNs in the Routing Table:                         219
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:            782
Number of addresses announced to Internet:                   1870051040
    Equivalent to 111 /8s, 118 /16s and 182 /24s
    Percentage of available address space announced:               50.5
    Percentage of allocated address space announced:               61.3
    Percentage of available address space allocated:               82.3
    Percentage of address space in use by end-sites:               72.5
Total number of prefixes smaller than registry allocations:      127674

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

Prefixes being announced by APNIC Region ASes:                    59872
    Total APNIC prefixes after maximum aggregation:               22374
    APNIC Deaggregation factor:                                    2.68
Prefixes being announced from the APNIC address blocks:           56863
    Unique aggregates announced from the APNIC address blocks:    25353
APNIC Region origin ASes present in the Internet Routing Table:    3294
    APNIC Prefixes per ASN:                                       17.26
APNIC Region origin ASes announcing only one prefix:                874
APNIC Region transit ASes present in the Internet Routing Table:    510
Average APNIC Region AS path length visible:                        3.5
    Max APNIC Region AS path length visible:                         14
Number of APNIC addresses announced to Internet:              361818656
    Equivalent to 21 /8s, 144 /16s and 234 /24s
    Percentage of available APNIC address space announced:         77.0

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:                    120497
    Total ARIN prefixes after maximum aggregation:                65111
    ARIN Deaggregation factor:                                     1.85
Prefixes being announced from the ARIN address blocks:            90125
    Unique aggregates announced from the ARIN address blocks:     34734
ARIN Region origin ASes present in the Internet Routing Table:    12250
    ARIN Prefixes per ASN:                                         7.36
ARIN Region origin ASes announcing only one prefix:                4735
ARIN Region transit ASes present in the Internet Routing Table:    1147
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          15
Number of ARIN addresses announced to Internet:               353744160
    Equivalent to 21 /8s, 21 /16s and 181 /24s
    Percentage of available ARIN address space announced:          72.7

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:                     56354
    Total RIPE prefixes after maximum aggregation:                34296
    RIPE Deaggregation factor:                                     1.64
Prefixes being announced from the RIPE address blocks:            51567
    Unique aggregates announced from the RIPE address blocks:     34588
RIPE Region origin ASes present in the Internet Routing Table:    11569
    RIPE Prefixes per ASN:                                         4.46
RIPE Region origin ASes announcing only one prefix:                6068
RIPE Region transit ASes present in the Internet Routing Table:    1748
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          18
Number of RIPE addresses announced to Internet:               364791936
    Equivalent to 21 /8s, 190 /16s and 72 /24s
    Percentage of available RIPE address space announced:          83.6

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, 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:                   20593
    Total LACNIC prefixes after maximum aggregation:               5225
    LACNIC Deaggregation factor:                                   3.94
Prefixes being announced from the LACNIC address blocks:          18745
    Unique aggregates announced from the LACNIC address blocks:   10567
LACNIC Region origin ASes present in the Internet Routing Table:    963
    LACNIC Prefixes per ASN:                                      19.47
LACNIC Region origin ASes announcing only one prefix:               313
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:              52976384
    Equivalent to 3 /8s, 40 /16s and 91 /24s
    Percentage of available LACNIC address space announced:        52.6

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:                   4089
    Total AfriNIC prefixes after maximum aggregation:              1202
    AfriNIC Deaggregation factor:                                  3.40
Prefixes being announced from the AfriNIC address blocks:          4368
    Unique aggregates announced from the AfriNIC address blocks:   1885
AfriNIC Region origin ASes present in the Internet Routing Table:   243
    AfriNIC Prefixes per ASN:                                     17.98
AfriNIC Region origin ASes announcing only one prefix:               77
AfriNIC Region transit ASes present in the Internet Routing Table:   48
Average AfriNIC Region AS path length visible:                      3.9
    Max AfriNIC Region AS path length visible:                       14
Number of AfriNIC addresses announced to Internet:             12239104
    Equivalent to 0 /8s, 186 /16s and 193 /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     1664        341         173   Videsh Sanchar Nigam Ltd. Aut
17488     1188         82          91   Hathway IP Over Cable Interne
 9583     1144         85         465   Sify Limited
 9498     1093        550          63   BHARTI BT INTERNET LTD.
 4766      847       6006         344   Korea Telecom (KIX)
 4134      828      13427         331   CHINANET-BACKBONE
23577      825         35         705   Korea Telecom (ATM-MPLS)
 4780      704        351          63   Digital United Inc.
18101      691        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     3006       3874         622   Qwest 
 6389     2668       3260         197   bellsouth.net, inc. 
 2386     1481        663         876   AT&T Data Communications Serv
 4323     1469       1045         377   Time Warner Telecom
 7018     1398       5823         978   AT&T WorldNet Services
 6298     1304        185         750   Cox Communicatons 
11492     1229        150          12   Cable One 
 1785     1084        510         104   AppliedTheory Corporation 
18566     1045        296          10   Covad Communications 
20115     1045       1060         558   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      347        188          11   TEDATA
 3301      334       1460         304   TeliaNet Sweden
 3320      322       7047         270   Deutsche Telekom AG
 8866      319         77          21   Bulgarian Telecommunication C
 5462      296        666          27   Telewest Broadband
 3215      287       2758          90   France Telecom Transpac
 8551      287        269          38   Bezeq International
  680      274       2047         264   DFN-IP service G-WiN
 6746      268        126         243   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     1295       2464         224   UniNet S.A. de C.V. 
11830      604        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      410         85          48   ENTEL CHILE S.A. 
11172      410        118          70   Servicios Alestra S.A de C.V 
10620      401        105          73   TVCABLE BOGOTA 
14117      375         23           9   Telefonica del Sur S.A. 
20299      335         23          98   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      274        853         225   The Internet Solution 
 2018      201        205          85   Tertiary Education Network 
 5713      155        558          93   Telkom SA Ltd 
 6713      143        135          11   Itissalat Al-MAGHRIB
33783      135         10          12   EEPAD TISP TELECOM & INTERNET
 5536      120          8          17   Internet Egypt Network
29571      102         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     3006       3874         622   Qwest 
 6389     2668       3260         197   bellsouth.net, inc. 
 4755     1664        341         173   Videsh Sanchar Nigam Ltd. Aut
 2386     1481        663         876   AT&T Data Communications Serv
 4323     1469       1045         377   Time Warner Telecom
 7018     1398       5823         978   AT&T WorldNet Services
 6298     1304        185         750   Cox Communicatons 
 8151     1295       2464         224   UniNet S.A. de C.V. 
11492     1229        150          12   Cable One 
17488     1188         82          91   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      2668        2471      bellsouth.net, inc. 
 4755      1664        1491      Videsh Sanchar Nigam Ltd. Aut
11492      1229        1217      Cable One 
17488      1188        1097      Hathway IP Over Cable Interne
 4323      1469        1092      Time Warner Telecom
 8151      1295        1071      UniNet S.A. de C.V. 
18566      1045        1035      Covad Communications 
 9498      1093        1030      BHARTI BT INTERNET LTD.
 1785      1084         980      AppliedTheory Corporation 
22773       966         904      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        /8:18       /9:9       /10:16      /11:45      /12:144     
/13:282     /14:514     /15:1040    /16:9974    /17:4341    /18:7404    
/19:15773   /20:18426   /21:18088   /22:22540   /23:23453   /24:137131  
/25:865     /26:1046    /27:790     /28:88      /29:9       /30:1       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
  209     1762          3006      Qwest 
 6389     1670          2668      bellsouth.net, inc. 
 6298     1289          1304      Cox Communicatons 
11492     1209          1229      Cable One 
 2386     1177          1481      AT&T Data Communications Serv
18566     1026          1045      Covad Communications 
 4755     1013          1664      Videsh Sanchar Nigam Ltd. Aut
17488     1002          1188      Hathway IP Over Cable Interne
 9583      999          1144      Sify Limited
 6478      976           985      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         8:119      12:2082     13:2        15:22       16:3      
  17:5        18:13       20:35       24:1078     25:1        32:62     
  38:443      40:92       41:654      43:1        44:2        47:12     
  52:3        55:3        56:3        57:26       58:501      59:504    
  60:450      61:1002     62:1188     63:2026     64:3289     65:2375   
  66:3539     67:1228     68:712      69:2263     70:737      71:119    
  72:1899     73:5        74:1035     75:160      76:302      77:724    
  78:718      79:189      80:958      81:845      82:612      83:391    
  84:558      85:964      86:411      87:686      88:335      89:1296   
  90:14       91:1304     92:213      93:616      94:56       96:39     
  97:27       98:204      99:3       112:1       113:1       114:71     
 116:760     117:319     118:187     119:454     120:51      121:557    
 122:794     123:361     124:865     125:1146    128:362     129:201    
 130:132     131:410     132:65      133:9       134:177     135:33     
 136:220     137:87      138:146     139:94      140:488     141:98     
 142:415     143:309     144:366     145:51      146:363     147:158    
 148:519     149:198     150:130     151:190     152:141     153:136    
 154:10      155:277     156:174     157:291     158:185     159:240    
 160:279     161:114     162:221     163:187     164:523     165:450    
 166:318     167:329     168:629     169:137     170:428     171:30     
 172:10      188:1       189:253     190:2166    192:5793    193:4102   
 194:3221    195:2528    196:1066    198:3729    199:3271    200:5574   
 201:1469    202:7601    203:8021    204:3974    205:2126    206:2388   
 207:2765    208:3407    209:3516    210:2577    211:1069    212:1433   
 213:1629    214:154     215:49      216:4401    217:1198    218:345    
 219:417     220:1054    221:465     222:307    

End of report




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