Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri May 1 13:18:39 CDT 2009


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 02 May, 2009

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

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

BGP routing table entries examined:                              288051
    Prefixes after maximum aggregation:                          136022
    Deaggregation factor:                                          2.12
    Unique aggregates announced to Internet:                     141369
Total ASes present in the Internet Routing Table:                 31138
    Prefixes per ASN:                                              9.25
Origin-only ASes present in the Internet Routing Table:           27105
Origin ASes announcing only one prefix:                           13215
Transit ASes present in the Internet Routing Table:                4033
Transit-only ASes present in the Internet Routing Table:             92
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      33
    Max AS path prepend of ASN (43683)                               31
Prefixes from unregistered ASNs in the Routing Table:               469
    Unregistered ASNs in the Routing Table:                         153
Number of 32-bit ASNs allocated by the RIRs:                        139
Prefixes from 32-bit ASNs in the Routing Table:                      28
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            194
Number of addresses announced to Internet:                   2038219584
    Equivalent to 121 /8s, 124 /16s and 195 /24s
    Percentage of available address space announced:               55.0
    Percentage of allocated address space announced:               63.6
    Percentage of available address space allocated:               86.4
    Percentage of address space in use by end-sites:               76.6
Total number of prefixes smaller than registry allocations:      142557

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

Prefixes being announced by APNIC Region ASes:                    67520
    Total APNIC prefixes after maximum aggregation:               24106
    APNIC Deaggregation factor:                                    2.80
Prefixes being announced from the APNIC address blocks:           64190
    Unique aggregates announced from the APNIC address blocks:    28896
APNIC Region origin ASes present in the Internet Routing Table:    3608
    APNIC Prefixes per ASN:                                       17.79
APNIC Region origin ASes announcing only one prefix:                973
APNIC Region transit ASes present in the Internet Routing Table:    550
Average APNIC Region AS path length visible:                        3.5
    Max APNIC Region AS path length visible:                         18
Number of APNIC addresses announced to Internet:              412626208
    Equivalent to 24 /8s, 152 /16s and 45 /24s
    Percentage of available APNIC address space announced:         76.9

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, 110/8, 111/8, 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,
                       180/8, 183/8, 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:                    125338
    Total ARIN prefixes after maximum aggregation:                66038
    ARIN Deaggregation factor:                                     1.90
Prefixes being announced from the ARIN address blocks:            94482
    Unique aggregates announced from the ARIN address blocks:     36854
ARIN Region origin ASes present in the Internet Routing Table:    12953
    ARIN Prefixes per ASN:                                         7.29
ARIN Region origin ASes announcing only one prefix:                5000
ARIN Region transit ASes present in the Internet Routing Table:    1251
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          24
Number of ARIN addresses announced to Internet:               428374528
    Equivalent to 25 /8s, 136 /16s and 122 /24s
    Percentage of available ARIN address space announced:          82.4

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
                       53248-55295
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, 108/8, 173/8,
                       174/8, 184/8, 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:                     66051
    Total RIPE prefixes after maximum aggregation:                38227
    RIPE Deaggregation factor:                                     1.73
Prefixes being announced from the RIPE address blocks:            60366
    Unique aggregates announced from the RIPE address blocks:     40195
RIPE Region origin ASes present in the Internet Routing Table:    12951
    RIPE Prefixes per ASN:                                         4.66
RIPE Region origin ASes announcing only one prefix:                6792
RIPE Region transit ASes present in the Internet Routing Table:    1950
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          33
Number of RIPE addresses announced to Internet:               393305888
    Equivalent to 23 /8s, 113 /16s and 95 /24s
    Percentage of available RIPE address space announced:          83.7

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, 47104-52223
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, 109/8,
                       178/8, 193/8, 194/8, 195/8, 212/8, 213/8, 217/8,
                      

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

Prefixes being announced by LACNIC Region ASes:                   23793
    Total LACNIC prefixes after maximum aggregation:               5880
    LACNIC Deaggregation factor:                                   4.05
Prefixes being announced from the LACNIC address blocks:          21946
    Unique aggregates announced from the LACNIC address blocks:   12120
LACNIC Region origin ASes present in the Internet Routing Table:   1104
    LACNIC Prefixes per ASN:                                      19.88
LACNIC Region origin ASes announcing only one prefix:               360
LACNIC Region transit ASes present in the Internet Routing Table:   182
Average LACNIC Region AS path length visible:                       4.1
    Max LACNIC Region AS path length visible:                        28
Number of LACNIC addresses announced to Internet:              62785280
    Equivalent to 3 /8s, 190 /16s and 7 /24s
    Percentage of available LACNIC address space announced:        62.4

LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247
                       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:                   4921
    Total AfriNIC prefixes after maximum aggregation:              1428
    AfriNIC Deaggregation factor:                                  3.45
Prefixes being announced from the AfriNIC address blocks:          4582
    Unique aggregates announced from the AfriNIC address blocks:   1400
AfriNIC Region origin ASes present in the Internet Routing Table:   293
    AfriNIC Prefixes per ASN:                                     15.64
AfriNIC Region origin ASes announcing only one prefix:               90
AfriNIC Region transit ASes present in the Internet Routing Table:   59
Average AfriNIC Region AS path length visible:                      3.9
    Max AfriNIC Region AS path length visible:                       15
Number of AfriNIC addresses announced to Internet:             11304960
    Equivalent to 0 /8s, 172 /16s and 128 /24s
    Percentage of available AfriNIC address space announced:       33.7

AfriNIC AS Blocks      36864-37887 & ERX transfers
AfriNIC Address Blocks  41/8, 197/8,

APNIC Region per AS prefix count summary
----------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 4766     1697       6930         402   Korea Telecom (KIX)
17488     1555        124          98   Hathway IP Over Cable Interne
 4755     1238        466         124   TATA Communications formerly 
 9583     1085         86         536   Sify Limited
 4134      898      16676         373   CHINANET-BACKBONE
 7545      787        168         107   TPG Internet Pty Ltd
23577      779         34         662   Korea Telecom (ATM-MPLS)
18101      753        217          31   Reliance Infocom Ltd Internet
24560      684        229         175   Bharti Airtel Ltd.
 9498      644        295          51   BHARTI BT INTERNET LTD.

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     4312       3653         344   bellsouth.net, inc. 
  209     2627       4151         621   Qwest 
 4323     1846       1051         376   Time Warner Telecom
 1785     1752        717         139   PaeTec Communications, Inc.
20115     1603       1442         724   Charter Communications 
 7018     1470       5896        1018   AT&T WorldNet Services
 6478     1391        308         427   AT&T Worldnet Services 
 2386     1260        682         909   AT&T Data Communications Serv
 3356     1197      10980         452   Level 3 Communications, LLC 
11492     1096        192          11   Cable One 

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
 8452     1235        188           7   TEDATA
30890      541         88         200   Evolva Telecom
 3292      454       1763         393   TDC Tele Danmark
12479      448        578           6   Uni2 Autonomous System
 8866      366        109          23   Bulgarian Telecommunication C
 3320      347       7082         298   Deutsche Telekom AG
 3215      343       3041         108   France Telecom Transpac
 3301      343       1670         307   TeliaNet Sweden
35805      332         24           4   United Telecom of Georgia
29049      321         26           3   AzerSat LLC.

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     1442       2847         235   UniNet S.A. de C.V. 
10620      905        208          88   TVCABLE BOGOTA 
22047      617        302          14   VTR PUNTO NET S.A. 
 7303      522        270          75   Telecom Argentina Stet-France
11830      516        294          34   Instituto Costarricense de El
11172      443        102          72   Servicios Alestra S.A de C.V 
 6471      442         96          31   ENTEL CHILE S.A. 
28573      423        557          27   NET Servicos de Comunicao S.A
16814      409         31          10   NSS, S.A. 
 7738      397        794          28   Telecomunicacoes da Bahia S.A

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      859         79          37   LINKdotNET AS number
20858      299         34           4   This AS will be used to conne
 3741      277        860         237   The Internet Solution 
 2018      243        215         143   Tertiary Education Network 
 6713      159        150          15   Itissalat Al-MAGHRIB
33783      151         10           8   EEPAD TISP TELECOM & INTERNET
29571      139         15           9   Ci Telecom Autonomous system 
 5536      123          8           9   Internet Egypt Network
 5713      115        507          66   Telkom SA Ltd 
24835      107         46           9   RAYA Telecom - Egypt

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     4312       3653         344   bellsouth.net, inc. 
  209     2627       4151         621   Qwest 
 4323     1846       1051         376   Time Warner Telecom
 1785     1752        717         139   PaeTec Communications, Inc.
 4766     1697       6930         402   Korea Telecom (KIX)
20115     1603       1442         724   Charter Communications 
17488     1555        124          98   Hathway IP Over Cable Interne
 7018     1470       5896        1018   AT&T WorldNet Services
 8151     1442       2847         235   UniNet S.A. de C.V. 
 6478     1391        308         427   AT&T Worldnet Services 

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

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

  ASN   No of nets  Net Savings Description
  209      2627        2006      Qwest 
 1785      1752        1613      PaeTec Communications, Inc.
 4323      1846        1470      Time Warner Telecom
17488      1555        1457      Hathway IP Over Cable Interne
 4766      1697        1295      Korea Telecom (KIX)
 8452      1235        1228      TEDATA
 8151      1442        1207      UniNet S.A. de C.V. 
 4755      1238        1114      TATA Communications formerly 
11492      1096        1085      Cable One 
18566      1062        1052      Covad Communications 

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
15132   UNALLOCATED   12.9.150.0/24         7018       AT&T WorldNet Servic
32567   UNALLOCATED   12.14.170.0/24        7018       AT&T WorldNet Servic
13746   UNALLOCATED   12.24.56.0/24         7018       AT&T WorldNet Servic
32567   UNALLOCATED   12.25.107.0/24        7018       AT&T WorldNet Servic
26973   UNALLOCATED   12.39.152.0/24        7018       AT&T WorldNet Servic
26973   UNALLOCATED   12.39.154.0/23        7018       AT&T WorldNet Servic
26973   UNALLOCATED   12.39.159.0/24        7018       AT&T WorldNet Servic
32326   UNALLOCATED   12.40.49.0/24         7018       AT&T WorldNet Servic
25639   UNALLOCATED   12.41.169.0/24        7018       AT&T WorldNet Servic

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

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

Network            Origin AS  Description
24.75.116.0/22       10796     ServiceCo LLC - Road Runner 
24.246.0.0/17         7018     AT&T WorldNet Services
24.246.128.0/18       7018     AT&T WorldNet Services
41.223.112.0/22       5713     Telkom SA Ltd 
41.223.176.0/22      36981     >>UNKNOWN<<
41.223.188.0/24      22351     Intelsat 
41.223.189.0/24      26452     Local Communications Networks
62.61.220.0/24       24974     Tachyon Europe BV - Wireless 
62.61.221.0/24       24974     Tachyon Europe BV - Wireless 
63.140.213.0/24      22555     Universal Talkware Corporatio

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        /8:19       /9:10      /10:20      /11:58      /12:166     
/13:336     /14:597     /15:1147    /16:10439   /17:4716    /18:8093    
/19:17101   /20:20371   /21:20238   /22:25913   /23:25432   /24:150686  
/25:902     /26:1051    /27:540     /28:161     /29:37      /30:10      
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2809          4312      bellsouth.net, inc. 
 4766     1391          1697      Korea Telecom (KIX)
  209     1334          2627      Qwest 
17488     1306          1555      Hathway IP Over Cable Interne
 8452     1209          1235      TEDATA
 1785     1158          1752      PaeTec Communications, Inc.
18566     1043          1062      Covad Communications 
11492     1034          1096      Cable One 
 2386      958          1260      AT&T Data Communications Serv
 4323      952          1846      Time Warner Telecom

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

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

   1:1         4:13        8:197      12:2217     13:6        15:19     
  16:3        17:4        20:35       24:1051     32:50       38:529    
  40:97       41:2006     43:1        44:2        47:22       52:4      
  55:2        56:3        57:25       58:577      59:635      60:459    
  61:1124     62:1111     63:2049     64:3669     65:2390     66:3619   
  67:1533     68:721      69:2583     70:533      71:145      72:1649   
  73:2        74:1482     75:170      76:311      77:829      78:549    
  79:331      80:973      81:819      82:561      83:422      84:602    
  85:1052     86:394      87:648      88:356      89:1455     90:47     
  91:2170     92:335      93:1058     94:1215     95:1145     96:123    
  97:201      98:465      99:17      109:1       110:89      112:114    
 113:101     114:230     115:250     116:1163    117:522     118:290    
 119:687     120:146     121:715     122:1012    123:686     124:972    
 125:1312    128:222     129:232     130:127     131:416     132:73     
 133:9       134:183     135:215     136:242     137:153     138:159    
 139:80      140:441     141:107     142:376     143:348     144:361    
 145:47      146:373     147:154     148:515     149:236     150:181    
 151:199     152:147     153:138     154:2       155:273     156:169    
 157:300     158:115     159:306     160:280     161:133     162:273    
 163:151     164:484     165:539     166:276     167:361     168:683    
 169:161     170:472     171:39      172:10      173:277     174:200    
 178:1       186:9       187:82      188:9       189:336     190:2643   
 192:5796    193:4226    194:3312    195:2686    196:1059    198:3715   
 199:3344    200:5424    201:1384    202:7851    203:8193    204:3815   
 205:2147    206:2426    207:2803    208:3912    209:3381    210:2701   
 211:1108    212:1514    213:1692    214:71      215:30      216:4636   
 217:1266    218:367     219:429     220:1211    221:470     222:293    


End of report




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