Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri May 22 13:11:48 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 23 May, 2009

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

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

BGP routing table entries examined:                              288626
    Prefixes after maximum aggregation:                          136367
    Deaggregation factor:                                          2.12
    Unique aggregates announced to Internet:                     141749
Total ASes present in the Internet Routing Table:                 31322
    Prefixes per ASN:                                              9.21
Origin-only ASes present in the Internet Routing Table:           27217
Origin ASes announcing only one prefix:                           13291
Transit ASes present in the Internet Routing Table:                4105
Transit-only ASes present in the Internet Routing Table:             95
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      28
    Max AS path prepend of ASN (12026)                               22
Prefixes from unregistered ASNs in the Routing Table:               455
    Unregistered ASNs in the Routing Table:                         148
Number of 32-bit ASNs allocated by the RIRs:                        158
Prefixes from 32-bit ASNs in the Routing Table:                      33
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            829
Number of addresses announced to Internet:                   2044649600
    Equivalent to 121 /8s, 222 /16s and 224 /24s
    Percentage of available address space announced:               55.2
    Percentage of allocated address space announced:               63.8
    Percentage of available address space allocated:               86.4
    Percentage of address space in use by end-sites:               77.1
Total number of prefixes smaller than registry allocations:      142558

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

Prefixes being announced by APNIC Region ASes:                    67841
    Total APNIC prefixes after maximum aggregation:               24339
    APNIC Deaggregation factor:                                    2.79
Prefixes being announced from the APNIC address blocks:           67272
    Unique aggregates announced from the APNIC address blocks:    30496
APNIC Region origin ASes present in the Internet Routing Table:    3637
    APNIC Prefixes per ASN:                                       18.50
APNIC Region origin ASes announcing only one prefix:                991
APNIC Region transit ASes present in the Internet Routing Table:    561
Average APNIC Region AS path length visible:                        3.5
    Max APNIC Region AS path length visible:                         18
Number of APNIC addresses announced to Internet:              450591072
    Equivalent to 26 /8s, 219 /16s and 121 /24s
    Percentage of available APNIC address space announced:         83.9

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:                    124887
    Total ARIN prefixes after maximum aggregation:                65697
    ARIN Deaggregation factor:                                     1.90
Prefixes being announced from the ARIN address blocks:           125608
    Unique aggregates announced from the ARIN address blocks:     51567
ARIN Region origin ASes present in the Internet Routing Table:    13007
    ARIN Prefixes per ASN:                                         9.66
ARIN Region origin ASes announcing only one prefix:                4999
ARIN Region transit ASes present in the Internet Routing Table:    1272
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          24
Number of ARIN addresses announced to Internet:              1008669056
    Equivalent to 60 /8s, 31 /16s and 17 /24s
    Percentage of available ARIN address space announced:         193.9

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:                     65362
    Total RIPE prefixes after maximum aggregation:                38650
    RIPE Deaggregation factor:                                     1.69
Prefixes being announced from the RIPE address blocks:            64628
    Unique aggregates announced from the RIPE address blocks:     43515
RIPE Region origin ASes present in the Internet Routing Table:    13044
    RIPE Prefixes per ASN:                                         4.95
RIPE Region origin ASes announcing only one prefix:                6845
RIPE Region transit ASes present in the Internet Routing Table:    1978
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          28
Number of RIPE addresses announced to Internet:               480372384
    Equivalent to 28 /8s, 161 /16s and 230 /24s
    Percentage of available RIPE address space announced:         102.3

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:                   23903
    Total LACNIC prefixes after maximum aggregation:               5894
    LACNIC Deaggregation factor:                                   4.06
Prefixes being announced from the LACNIC address blocks:          23736
    Unique aggregates announced from the LACNIC address blocks:   13078
LACNIC Region origin ASes present in the Internet Routing Table:   1110
    LACNIC Prefixes per ASN:                                      21.38
LACNIC Region origin ASes announcing only one prefix:               363
LACNIC Region transit ASes present in the Internet Routing Table:   185
Average LACNIC Region AS path length visible:                       4.1
    Max LACNIC Region AS path length visible:                        22
Number of LACNIC addresses announced to Internet:              71453056
    Equivalent to 4 /8s, 66 /16s and 73 /24s
    Percentage of available LACNIC address space announced:        71.0

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:                   6214
    Total AfriNIC prefixes after maximum aggregation:              1451
    AfriNIC Deaggregation factor:                                  4.28
Prefixes being announced from the AfriNIC address blocks:          6540
    Unique aggregates announced from the AfriNIC address blocks:   2459
AfriNIC Region origin ASes present in the Internet Routing Table:   300
    AfriNIC Prefixes per ASN:                                     21.80
AfriNIC Region origin ASes announcing only one prefix:               93
AfriNIC Region transit ASes present in the Internet Routing Table:   62
Average AfriNIC Region AS path length visible:                      3.7
    Max AfriNIC Region AS path length visible:                       15
Number of AfriNIC addresses announced to Internet:             19268608
    Equivalent to 1 /8s, 38 /16s and 4 /24s
    Percentage of available AfriNIC address space announced:       57.4

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     1704       6930         401   Korea Telecom (KIX)
17488     1578        129         109   Hathway IP Over Cable Interne
 4755     1251        466         127   TATA Communications formerly 
 9583     1074         86         539   Sify Limited
 4134      890      16789         375   CHINANET-BACKBONE
23577      783         34         665   Korea Telecom (ATM-MPLS)
 7545      777        198         102   TPG Internet Pty Ltd
18101      752        217          32   Reliance Infocom Ltd Internet
24560      693        230         175   Bharti Airtel Ltd.
 9829      664        561          15   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
 6389     4296       3647         324   bellsouth.net, inc. 
  209     2540       4133         604   Qwest 
 4323     1850       1035         374   Time Warner Telecom
 1785     1767        717         139   PaeTec Communications, Inc.
20115     1627       1443         719   Charter Communications 
 7018     1502       5903        1035   AT&T WorldNet Services
 6478     1412        313         397   AT&T Worldnet Services 
 2386     1264        682         918   AT&T Data Communications Serv
 3356     1221      10981         458   Level 3 Communications, LLC 
11492     1102        193          12   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
30890      542         88         200   Evolva Telecom
 3292      456       1893         394   TDC Tele Danmark
12479      447        578           6   Uni2 Autonomous System
  702      430       1864         344   UUNET - Commercial IP service
 8866      385        110          26   Bulgarian Telecommunication C
 3320      344       7066         295   Deutsche Telekom AG
 3215      343       3041         108   France Telecom Transpac
 3301      340       1668         304   TeliaNet Sweden
35805      339         24           4   United Telecom of Georgia
29049      316         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     1446       2862         235   UniNet S.A. de C.V. 
10620      914        208         105   TVCABLE BOGOTA 
22047      610        302          14   VTR PUNTO NET S.A. 
 7303      531        275          77   Telecom Argentina Stet-France
11830      486        292          54   Instituto Costarricense de El
28573      480        562          35   NET Servicos de Comunicao S.A
 6471      443         96          32   ENTEL CHILE S.A. 
11172      441        102          70   Servicios Alestra S.A de C.V 
 7738      404        794          28   Telecomunicacoes da Bahia S.A
 3816      352        164          75   Empresa Nacional de Telecomun

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
 8452     1205        188           7   TEDATA
24863      869         80          39   LINKdotNET AS number
20858      309         34           5   EgyNet
 3741      278        860         238   The Internet Solution 
 2018      244        215         143   Tertiary Education Network 
 6713      160        151          12   Itissalat Al-MAGHRIB
33783      152         10           8   EEPAD TISP TELECOM & INTERNET
29571      139         15           8   Ci Telecom Autonomous system 
 5536      123          8           9   Internet Egypt Network
33776      116          6           7   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
 6389     4296       3647         324   bellsouth.net, inc. 
  209     2540       4133         604   Qwest 
 4323     1850       1035         374   Time Warner Telecom
 1785     1767        717         139   PaeTec Communications, Inc.
 4766     1704       6930         401   Korea Telecom (KIX)
20115     1627       1443         719   Charter Communications 
17488     1578        129         109   Hathway IP Over Cable Interne
 7018     1502       5903        1035   AT&T WorldNet Services
 8151     1446       2862         235   UniNet S.A. de C.V. 
 6478     1412        313         397   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      2540        1936      Qwest 
 1785      1767        1628      PaeTec Communications, Inc.
 4323      1850        1476      Time Warner Telecom
17488      1578        1469      Hathway IP Over Cable Interne
 4766      1704        1303      Korea Telecom (KIX)
 8151      1446        1211      UniNet S.A. de C.V. 
 8452      1205        1198      TEDATA
 4755      1251        1124      TATA Communications formerly 
11492      1102        1090      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
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
63.143.251.0/24      22555     Universal Talkware Corporatio
64.31.32.0/19        11955     ServiceCo LLC - Road Runner 
64.31.59.0/24         7017     ServiceCo LLC - Road Runner 

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     
/13:340     /14:599     /15:1149    /16:10475   /17:4753    /18:8181    
/19:17170   /20:20424   /21:20327   /22:25982   /23:25684   /24:150719  
/25:846     /26:994     /27:545     /28:144     /29:8       /30:5       
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2801          4296      bellsouth.net, inc. 
 4766     1397          1704      Korea Telecom (KIX)
17488     1299          1578      Hathway IP Over Cable Interne
  209     1283          2540      Qwest 
 8452     1174          1205      TEDATA
 1785     1170          1767      PaeTec Communications, Inc.
18566     1043          1062      Covad Communications 
11492     1037          1102      Cable One 
 2386      974          1264      AT&T Data Communications Serv
 4323      954          1850      Time Warner Telecom

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

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

   4:13        8:199      12:2229     13:10       15:19       16:3      
  17:4        20:35       24:1075     32:52       34:2        38:557    
  40:97       41:1984     43:1        44:2        47:22       52:4      
  55:2        56:3        57:25       58:588      59:642      60:456    
  61:1097     62:1094     63:2077     64:3693     65:2385     66:3602   
  67:1607     68:790      69:2618     70:526      71:146      72:1663   
  73:2        74:1533     75:171      76:308      77:848      78:563    
  79:338      80:958      81:816      82:551      83:428      84:617    
  85:1027     86:407      87:656      88:355      89:1440     90:62     
  91:2230     92:323      93:1025     94:1208     95:1166     96:129    
  97:209      98:225      99:19      109:1       110:124     112:125    
 113:104     114:266     115:288     116:1157    117:516     118:291    
 119:699     120:144     121:732     122:1024    123:675     124:969    
 125:1324    128:221     129:235     130:125     131:412     132:75     
 133:9       134:187     135:39      136:224     137:155     138:160    
 139:78      140:443     141:109     142:380     143:331     144:364    
 145:47      146:377     147:153     148:517     149:238     150:165    
 151:200     152:147     153:137     154:2       155:275     156:169    
 157:298     158:116     159:312     160:282     161:143     162:268    
 163:152     164:480     165:503     166:275     167:362     168:675    
 169:167     170:480     171:40      172:10      173:283     174:212    
 178:1       180:1       183:1       186:15      187:94      188:17     
 189:370     190:2662    192:5817    193:4223    194:3299    195:2718   
 196:1081    198:3634    199:3365    200:5307    201:1296    202:7869   
 203:8183    204:3819    205:2149    206:2453    207:2809    208:3914   
 209:3424    210:2669    211:1113    212:1522    213:1685    214:77     
 215:30      216:4655    217:1258    218:368     219:435     220:1216   
 221:470     222:293    

End of report




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