Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Jul 25 13:08:08 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 26 Jul, 2008

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

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

BGP routing table entries examined:                              263817
    Prefixes after maximum aggregation:                          129203
    Deaggregation factor:                                          2.04
    Unique aggregates announced to Internet:                     128902
Total ASes present in the Internet Routing Table:                 28747
    Prefixes per ASN:                                              9.18
Origin-only ASes present in the Internet Routing Table:           25067
Origin ASes announcing only one prefix:                           12114
Transit ASes present in the Internet Routing Table:                3680
Transit-only ASes present in the Internet Routing Table:             80
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:               585
    Unregistered ASNs in the Routing Table:                         213
Number of 32-bit ASNs allocated by the RIRs:                         51
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:            779
Number of addresses announced to Internet:                   1879804352
    Equivalent to 112 /8s, 11 /16s and 137 /24s
    Percentage of available address space announced:               50.7
    Percentage of allocated address space announced:               61.6
    Percentage of available address space allocated:               82.3
    Percentage of address space in use by end-sites:               72.8
Total number of prefixes smaller than registry allocations:      128837

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

Prefixes being announced by APNIC Region ASes:                    60552
    Total APNIC prefixes after maximum aggregation:               22662
    APNIC Deaggregation factor:                                    2.67
Prefixes being announced from the APNIC address blocks:           57525
    Unique aggregates announced from the APNIC address blocks:    25903
APNIC Region origin ASes present in the Internet Routing Table:    3307
    APNIC Prefixes per ASN:                                       17.39
APNIC Region origin ASes announcing only one prefix:                877
APNIC Region transit ASes present in the Internet Routing Table:    519
Average APNIC Region AS path length visible:                        3.5
    Max APNIC Region AS path length visible:                         15
Number of APNIC addresses announced to Internet:              368888864
    Equivalent to 21 /8s, 252 /16s and 204 /24s
    Percentage of available APNIC address space announced:         78.5

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:                    121160
    Total ARIN prefixes after maximum aggregation:                65083
    ARIN Deaggregation factor:                                     1.86
Prefixes being announced from the ARIN address blocks:            90677
    Unique aggregates announced from the ARIN address blocks:     34897
ARIN Region origin ASes present in the Internet Routing Table:    12311
    ARIN Prefixes per ASN:                                         7.37
ARIN Region origin ASes announcing only one prefix:                4750
ARIN Region transit ASes present in the Internet Routing Table:    1154
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          15
Number of ARIN addresses announced to Internet:               353191456
    Equivalent to 21 /8s, 13 /16s and 70 /24s
    Percentage of available ARIN address space announced:          72.6

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:                     56776
    Total RIPE prefixes after maximum aggregation:                34509
    RIPE Deaggregation factor:                                     1.65
Prefixes being announced from the RIPE address blocks:            51972
    Unique aggregates announced from the RIPE address blocks:     34924
RIPE Region origin ASes present in the Internet Routing Table:    11625
    RIPE Prefixes per ASN:                                         4.47
RIPE Region origin ASes announcing only one prefix:                6092
RIPE Region transit ASes present in the Internet Routing Table:    1745
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          18
Number of RIPE addresses announced to Internet:               367204704
    Equivalent to 21 /8s, 227 /16s and 25 /24s
    Percentage of available RIPE address space announced:          84.2

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:                   20746
    Total LACNIC prefixes after maximum aggregation:               5244
    LACNIC Deaggregation factor:                                   3.96
Prefixes being announced from the LACNIC address blocks:          18960
    Unique aggregates announced from the LACNIC address blocks:   10738
LACNIC Region origin ASes present in the Internet Routing Table:    971
    LACNIC Prefixes per ASN:                                      19.53
LACNIC Region origin ASes announcing only one prefix:               318
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:                        18
Number of LACNIC addresses announced to Internet:              53835776
    Equivalent to 3 /8s, 53 /16s and 120 /24s
    Percentage of available LACNIC address space announced:        53.5

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:                   4001
    Total AfriNIC prefixes after maximum aggregation:              1217
    AfriNIC Deaggregation factor:                                  3.29
Prefixes being announced from the AfriNIC address blocks:          4304
    Unique aggregates announced from the AfriNIC address blocks:   1861
AfriNIC Region origin ASes present in the Internet Routing Table:   242
    AfriNIC Prefixes per ASN:                                     17.79
AfriNIC Region origin ASes announcing only one prefix:               77
AfriNIC Region transit ASes present in the Internet Routing Table:   47
Average AfriNIC Region AS path length visible:                      3.9
    Max AfriNIC Region AS path length visible:                       14
Number of AfriNIC addresses announced to Internet:             12518400
    Equivalent to 0 /8s, 191 /16s and 4 /24s
    Percentage of available AfriNIC address space announced:       37.3

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     1677        342         177   Videsh Sanchar Nigam Ltd. Aut
17488     1236         85          99   Hathway IP Over Cable Interne
 9583     1145         86         482   Sify Limited
 4766      853       6390         347   Korea Telecom (KIX)
23577      830         35         702   Korea Telecom (ATM-MPLS)
 4134      828      13603         337   CHINANET-BACKBONE
 4780      711        351          63   Digital United Inc.
18101      710        167          33   Reliance Infocom Ltd Internet
 9498      661        291          57   BHARTI BT INTERNET LTD.
 4808      621       1120         138   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     3209       3359         213   bellsouth.net, inc. 
  209     2999       3859         623   Qwest 
 6298     1648        237         780   Cox Communicatons 
 4323     1486       1062         380   Time Warner Telecom
 2386     1485        663         879   AT&T Data Communications Serv
 7018     1412       5840         989   AT&T WorldNet Services
 1785     1227        510         104   AppliedTheory Corporation 
11492     1208        149          28   Cable One 
20115     1118       1082         572   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      413       1792         371   TDC Tele Danmark
 3301      332       1460         303   TeliaNet Sweden
 3320      322       7047         270   Deutsche Telekom AG
 8452      320        188          11   TEDATA
 8866      317         77          21   Bulgarian Telecommunication C
 5462      296        666          27   Telewest Broadband
 8551      288        270          38   Bezeq International
 3215      277       2758          90   France Telecom Transpac
  680      274       2047         264   DFN-IP service G-WiN
 6746      267        125         242   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     1384       2590         225   UniNet S.A. de C.V. 
11830      612        299           9   Instituto Costarricense de El
22047      565        270          14   VTR PUNTO NET S.A. 
 7303      472        233          60   Telecom Argentina Stet-France
16814      426         27          10   NSS, S.A. 
 6471      415         85          48   ENTEL CHILE S.A. 
11172      408        118          71   Servicios Alestra S.A de C.V 
10620      407        107          56   TVCABLE BOGOTA 
14117      375         23           9   Telefonica del Sur S.A. 
20299      331         23         104   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      478         61          25   LINKdotNET AS number
20858      398         34           3   EgyNet
 3741      268        855         223   The Internet Solution 
 2018      209        197         131   Tertiary Education Network 
 6713      141        135          11   Itissalat Al-MAGHRIB
33783      135         10          12   EEPAD TISP TELECOM & INTERNET
 5713      131        556          76   Telkom SA Ltd 
 5536      120          8          17   Internet Egypt Network
33776      115          6           7   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     3209       3359         213   bellsouth.net, inc. 
  209     2999       3859         623   Qwest 
 4755     1677        342         177   Videsh Sanchar Nigam Ltd. Aut
 6298     1648        237         780   Cox Communicatons 
 4323     1486       1062         380   Time Warner Telecom
 2386     1485        663         879   AT&T Data Communications Serv
 7018     1412       5840         989   AT&T WorldNet Services
 8151     1384       2590         225   UniNet S.A. de C.V. 
17488     1236         85          99   Hathway IP Over Cable Interne
 1785     1227        510         104   AppliedTheory Corporation 

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

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

  ASN   No of nets  Net Savings Description
  209      2999        2376      Qwest 
 4755      1677        1500      Videsh Sanchar Nigam Ltd. Aut
11492      1208        1180      Cable One 
 8151      1384        1159      UniNet S.A. de C.V. 
17488      1236        1137      Hathway IP Over Cable Interne
 1785      1227        1123      AppliedTheory Corporation 
 4323      1486        1106      Time Warner Telecom
18566      1045        1035      Covad Communications 
22773       972         908      Cox Communications, Inc.
 6298      1648         868      Cox Communicatons 

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. 
24.48.246.0/24        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

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      /12:145     
/13:288     /14:519     /15:1044    /16:10020   /17:4337    /18:7532    
/19:15887   /20:18548   /21:18162   /22:22735   /23:23709   /24:138084  
/25:837     /26:1019    /27:767     /28:82      /29:7       /30:1       
/31:0       /32:6       

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

  ASN   No of nets  Total ann.   Description
 6389     2040          3209      bellsouth.net, inc. 
  209     1750          2999      Qwest 
 6298     1624          1648      Cox Communicatons 
11492     1190          1208      Cable One 
 2386     1182          1485      AT&T Data Communications Serv
17488     1048          1236      Hathway IP Over Cable Interne
 4755     1029          1677      Videsh Sanchar Nigam Ltd. Aut
18566     1026          1045      Covad Communications 
 6478     1006          1015      AT&T Worldnet Services 
 9583     1001          1145      Sify Limited

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

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

   4:8         8:126      12:2107     13:2        15:22       16:3      
  17:5        18:13       20:35       24:1063     32:60       38:467    
  40:92       41:661      43:1        44:2        47:12       52:3      
  55:3        56:3        57:25       58:521      59:506      60:453    
  61:1011     62:1196     63:2042     64:3251     65:2391     66:3504   
  67:1227     68:744      69:2271     70:804      71:117      72:1965   
  73:5        74:1042     75:155      76:306      77:758      78:764    
  79:211      80:938      81:824      82:599      83:377      84:566    
  85:965      86:409      87:690      88:338      89:1323     90:15     
  91:1382     92:231      93:710      94:88       96:48       97:34     
  98:266      99:4       112:1       113:1       114:90      115:19     
 116:864     117:323     118:189     119:426     120:56      121:567    
 122:801     123:365     124:903     125:1177    128:361     129:198    
 130:134     131:410     132:66      133:9       134:186     135:33     
 136:224     137:92      138:146     139:93      140:494     141:99     
 142:408     143:332     144:393     145:51      146:366     147:156    
 148:517     149:196     150:125     151:180     152:143     153:136    
 154:10      155:252     156:175     157:290     158:187     159:237    
 160:279     161:118     162:215     163:155     164:518     165:452    
 166:319     167:331     168:621     169:139     170:426     171:32     
 172:10      188:1       189:297     190:2197    192:5797    193:4098   
 194:3229    195:2536    196:1025    198:3722    199:3279    200:5586   
 201:1463    202:7656    203:8052    204:3983    205:2128    206:2333   
 207:2753    208:3451    209:3515    210:2583    211:1073    212:1412   
 213:1583    214:164     215:49      216:4468    217:1208    218:342    
 219:423     220:1055    221:451     222:312    

End of report




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