Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Aug 8 13:08:23 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 09 Aug, 2008

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

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

BGP routing table entries examined:                              265478
    Prefixes after maximum aggregation:                          129570
    Deaggregation factor:                                          2.05
    Unique aggregates announced to Internet:                     129591
Total ASes present in the Internet Routing Table:                 28883
    Prefixes per ASN:                                              9.19
Origin-only ASes present in the Internet Routing Table:           25165
Origin ASes announcing only one prefix:                           12193
Transit ASes present in the Internet Routing Table:                3718
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:                                      25
    Max AS path prepend of ASN ( 3816)                               15
Prefixes from unregistered ASNs in the Routing Table:               569
    Unregistered ASNs in the Routing Table:                         209
Number of 32-bit ASNs allocated by the RIRs:                         55
Prefixes from 32-bit ASNs in the Routing Table:                       7
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            778
Number of addresses announced to Internet:                   1889709152
    Equivalent to 112 /8s, 162 /16s and 172 /24s
    Percentage of available address space announced:               51.0
    Percentage of allocated address space announced:               61.9
    Percentage of available address space allocated:               82.3
    Percentage of address space in use by end-sites:               73.0
Total number of prefixes smaller than registry allocations:      130048

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

Prefixes being announced by APNIC Region ASes:                    61000
    Total APNIC prefixes after maximum aggregation:               22709
    APNIC Deaggregation factor:                                    2.69
Prefixes being announced from the APNIC address blocks:           57975
    Unique aggregates announced from the APNIC address blocks:    26131
APNIC Region origin ASes present in the Internet Routing Table:    3322
    APNIC Prefixes per ASN:                                       17.45
APNIC Region origin ASes announcing only one prefix:                880
APNIC Region transit ASes present in the Internet Routing Table:    512
Average APNIC Region AS path length visible:                        3.5
    Max APNIC Region AS path length visible:                         17
Number of APNIC addresses announced to Internet:              370241056
    Equivalent to 22 /8s, 17 /16s and 110 /24s
    Percentage of available APNIC address space announced:         78.8

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:                    121751
    Total ARIN prefixes after maximum aggregation:                65124
    ARIN Deaggregation factor:                                     1.87
Prefixes being announced from the ARIN address blocks:            91093
    Unique aggregates announced from the ARIN address blocks:     34943
ARIN Region origin ASes present in the Internet Routing Table:    12344
    ARIN Prefixes per ASN:                                         7.38
ARIN Region origin ASes announcing only one prefix:                4761
ARIN Region transit ASes present in the Internet Routing Table:    1179
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          16
Number of ARIN addresses announced to Internet:               360292768
    Equivalent to 21 /8s, 121 /16s and 161 /24s
    Percentage of available ARIN address space announced:          74.1

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:                     57093
    Total RIPE prefixes after maximum aggregation:                34735
    RIPE Deaggregation factor:                                     1.64
Prefixes being announced from the RIPE address blocks:            52243
    Unique aggregates announced from the RIPE address blocks:     35108
RIPE Region origin ASes present in the Internet Routing Table:    11705
    RIPE Prefixes per ASN:                                         4.46
RIPE Region origin ASes announcing only one prefix:                6155
RIPE Region transit ASes present in the Internet Routing Table:    1764
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          18
Number of RIPE addresses announced to Internet:               368507008
    Equivalent to 21 /8s, 246 /16s and 248 /24s
    Percentage of available RIPE address space announced:          84.5

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:                   21040
    Total LACNIC prefixes after maximum aggregation:               5302
    LACNIC Deaggregation factor:                                   3.97
Prefixes being announced from the LACNIC address blocks:          19279
    Unique aggregates announced from the LACNIC address blocks:   10899
LACNIC Region origin ASes present in the Internet Routing Table:    977
    LACNIC Prefixes per ASN:                                      19.73
LACNIC Region origin ASes announcing only one prefix:               319
LACNIC Region transit ASes present in the Internet Routing Table:   165
Average LACNIC Region AS path length visible:                       4.1
    Max LACNIC Region AS path length visible:                        25
Number of LACNIC addresses announced to Internet:              54245376
    Equivalent to 3 /8s, 59 /16s and 184 /24s
    Percentage of available LACNIC address space announced:        53.9

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:              1224
    AfriNIC Deaggregation factor:                                  3.29
Prefixes being announced from the AfriNIC address blocks:          4372
    Unique aggregates announced from the AfriNIC address blocks:   1913
AfriNIC Region origin ASes present in the Internet Routing Table:   246
    AfriNIC Prefixes per ASN:                                     17.77
AfriNIC Region origin ASes announcing only one prefix:               78
AfriNIC Region transit ASes present in the Internet Routing Table:   49
Average AfriNIC Region AS path length visible:                      3.9
    Max AfriNIC Region AS path length visible:                       15
Number of AfriNIC addresses announced to Internet:             12534016
    Equivalent to 0 /8s, 191 /16s and 65 /24s
    Percentage of available AfriNIC address space announced:       37.4

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     1691        345         178   Videsh Sanchar Nigam Ltd. Aut
17488     1288         88          92   Hathway IP Over Cable Interne
 9583     1174         92         492   Sify Limited
 4766      856       6390         349   Korea Telecom (KIX)
 4134      833      13516         353   CHINANET-BACKBONE
23577      831         35         703   Korea Telecom (ATM-MPLS)
 4780      712        353          64   Digital United Inc.
18101      712        167          33   Reliance Infocom Ltd Internet
 9498      669        291          54   BHARTI BT INTERNET LTD.
 4808      618       1112         137   CNCGROUP IP network: China169

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
 6389     3200       3358         208   bellsouth.net, inc. 
  209     2975       3860         625   Qwest 
 6298     1778        270         768   Cox Communicatons 
 2386     1560        707         893   AT&T Data Communications Serv
 4323     1489       1078         380   Time Warner Telecom
 1785     1450        478         102   AppliedTheory Corporation 
 7018     1411       5830         989   AT&T WorldNet Services
11492     1218        151          23   Cable One 
20115     1117       1082         571   Charter Communications 
18566     1045        296          10   Covad 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
 3215      371       2756         106   France Telecom Transpac
 8452      357        188          11   TEDATA
 3301      333       1460         304   TeliaNet Sweden
 3320      323       7047         271   Deutsche Telekom AG
 8866      316         77          21   Bulgarian Telecommunication C
 8551      288        270          38   Bezeq International
 5462      286        666          27   Telewest Broadband
  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     1476       2592         225   UniNet S.A. de C.V. 
11830      624        299           9   Instituto Costarricense de El
22047      565        270          14   VTR PUNTO NET S.A. 
 7303      475        235          63   Telecom Argentina Stet-France
16814      426         27          10   NSS, S.A. 
 6471      417         85          48   ENTEL CHILE S.A. 
11172      409        118          71   Servicios Alestra S.A de C.V 
10620      407        107          51   TVCABLE BOGOTA 
14117      375         23           9   Telefonica del Sur S.A. 
20299      346         24         101   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      495         63          28   LINKdotNET AS number
20858      402         34           3   EgyNet
 3741      269        855         224   The Internet Solution 
 2018      211        213         130   Tertiary Education Network 
 6713      143        135          11   Itissalat Al-MAGHRIB
33783      135         10          12   EEPAD TISP TELECOM & INTERNET
 5713      129        540          74   Telkom SA Ltd 
 5536      120          8          17   Internet Egypt Network
33776      114          6           3   Starcomms Nigeria Limited
29571      107         13           8   Ci Telecom Autonomous system 

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
 6389     3200       3358         208   bellsouth.net, inc. 
  209     2975       3860         625   Qwest 
 6298     1778        270         768   Cox Communicatons 
 4755     1691        345         178   Videsh Sanchar Nigam Ltd. Aut
 2386     1560        707         893   AT&T Data Communications Serv
 4323     1489       1078         380   Time Warner Telecom
 8151     1476       2592         225   UniNet S.A. de C.V. 
 1785     1450        478         102   AppliedTheory Corporation 
 7018     1411       5830         989   AT&T WorldNet Services
17488     1288         88          92   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
  209      2975        2350      Qwest 
 4755      1691        1513      Videsh Sanchar Nigam Ltd. Aut
 1785      1450        1348      AppliedTheory Corporation 
 8151      1476        1251      UniNet S.A. de C.V. 
17488      1288        1196      Hathway IP Over Cable Interne
11492      1218        1195      Cable One 
 4323      1489        1109      Time Warner Telecom
18566      1045        1035      Covad Communications 
 6298      1778        1010      Cox Communicatons 
22773       973         910      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         7018       AT&T WorldNet Servic
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
24.51.159.0/24        7843     Adelphia Corp. 
24.54.224.0/19       20001     HoldCo LLC - Road Runner 
24.75.160.0/19        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
62.61.220.0/24       24974     Tachyon Europe BV - Wireless 
63.140.213.0/24      22555     Universal Talkware Corporatio
63.143.71.0/24         701     UUNET Technologies, Inc. 

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       /10:17      /11:45      /12:146     
/13:293     /14:523     /15:1054    /16:10035   /17:4344    /18:7529    
/19:15967   /20:18606   /21:18147   /22:22946   /23:23926   /24:139133  
/25:843     /26:1036    /27:758     /28:86      /29:9       /30:1       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2035          3200      bellsouth.net, inc. 
 6298     1752          1778      Cox Communicatons 
  209     1726          2975      Qwest 
 2386     1236          1560      AT&T Data Communications Serv
11492     1199          1218      Cable One 
17488     1096          1288      Hathway IP Over Cable Interne
 1785     1064          1450      AppliedTheory Corporation 
 4755     1042          1691      Videsh Sanchar Nigam Ltd. Aut
 9583     1030          1174      Sify Limited
18566     1026          1045      Covad Communications 

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

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

   4:8         8:129      12:2102     13:2        14:1        15:22     
  16:3        17:5        18:13       20:35       24:1085     32:59     
  38:479      40:92       41:695      43:1        44:2        47:12     
  52:3        55:3        56:3        57:27       58:526      59:512    
  60:456      61:992      62:1208     63:2036     64:3262     65:2376   
  66:3496     67:1221     68:743      69:2289     70:823      71:116    
  72:2008     73:6        74:1086     75:156      76:308      77:754    
  78:805      79:218      80:976      81:849      82:610      83:378    
  84:570      85:966      86:397      87:684      88:340      89:1296   
  90:33       91:1389     92:247      93:720      94:95       96:53     
  97:44       98:301      99:3       114:81      115:34      116:923    
 117:330     118:193     119:442     120:63      121:581     122:808    
 123:372     124:904     125:1176    128:360     129:198     130:135    
 131:411     132:67      133:9       134:187     135:33      136:222    
 137:94      138:146     139:88      140:500     141:103     142:404    
 143:335     144:390     145:51      146:372     147:156     148:517    
 149:198     150:129     151:181     152:143     153:136     154:10     
 155:252     156:174     157:285     158:186     159:294     160:273    
 161:119     162:216     163:155     164:516     165:455     166:318    
 167:329     168:623     169:139     170:425     171:32      172:10     
 188:1       189:431     190:2264    192:5799    193:4140    194:3241   
 195:2550    196:1025    198:3738    199:3307    200:5588    201:1471   
 202:7691    203:8077    204:3962    205:2144    206:2361    207:2760   
 208:3502    209:3465    210:2586    211:1076    212:1425    213:1600   
 214:172     215:50      216:4483    217:1212    218:343     219:428    
 220:1065    221:455     222:309    

End of report




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