Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Mar 27 13:11:41 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 28 Mar, 2009

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

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

BGP routing table entries examined:                              283794
    Prefixes after maximum aggregation:                          134532
    Deaggregation factor:                                          2.11
    Unique aggregates announced to Internet:                     139535
Total ASes present in the Internet Routing Table:                 30912
    Prefixes per ASN:                                              9.18
Origin-only ASes present in the Internet Routing Table:           26905
Origin ASes announcing only one prefix:                           13087
Transit ASes present in the Internet Routing Table:                4007
Transit-only ASes present in the Internet Routing Table:             99
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      25
    Max AS path prepend of ASN (18678)                               21
Prefixes from unregistered ASNs in the Routing Table:               493
    Unregistered ASNs in the Routing Table:                         165
Number of 32-bit ASNs allocated by the RIRs:                        138
Prefixes from 32-bit ASNs in the Routing Table:                      20
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            251
Number of addresses announced to Internet:                   2022627808
    Equivalent to 120 /8s, 142 /16s and 217 /24s
    Percentage of available address space announced:               54.6
    Percentage of allocated address space announced:               63.8
    Percentage of available address space allocated:               85.5
    Percentage of address space in use by end-sites:               76.1
Total number of prefixes smaller than registry allocations:      139620

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

Prefixes being announced by APNIC Region ASes:                    65682
    Total APNIC prefixes after maximum aggregation:               23471
    APNIC Deaggregation factor:                                    2.80
Prefixes being announced from the APNIC address blocks:           62432
    Unique aggregates announced from the APNIC address blocks:    28564
APNIC Region origin ASes present in the Internet Routing Table:    3585
    APNIC Prefixes per ASN:                                       17.41
APNIC Region origin ASes announcing only one prefix:                974
APNIC Region transit ASes present in the Internet Routing Table:    547
Average APNIC Region AS path length visible:                        3.6
    Max APNIC Region AS path length visible:                         19
Number of APNIC addresses announced to Internet:              409336608
    Equivalent to 24 /8s, 101 /16s and 251 /24s
    Percentage of available APNIC address space announced:         81.3

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,
                       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:                    124316
    Total ARIN prefixes after maximum aggregation:                65644
    ARIN Deaggregation factor:                                     1.89
Prefixes being announced from the ARIN address blocks:            93687
    Unique aggregates announced from the ARIN address blocks:     36273
ARIN Region origin ASes present in the Internet Routing Table:    12867
    ARIN Prefixes per ASN:                                         7.28
ARIN Region origin ASes announcing only one prefix:                4937
ARIN Region transit ASes present in the Internet Routing Table:    1239
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          20
Number of ARIN addresses announced to Internet:               420340480
    Equivalent to 25 /8s, 13 /16s and 227 /24s
    Percentage of available ARIN address space announced:          80.8

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, 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:                     65001
    Total RIPE prefixes after maximum aggregation:                37810
    RIPE Deaggregation factor:                                     1.72
Prefixes being announced from the RIPE address blocks:            59598
    Unique aggregates announced from the RIPE address blocks:     39657
RIPE Region origin ASes present in the Internet Routing Table:    12845
    RIPE Prefixes per ASN:                                         4.64
RIPE Region origin ASes announcing only one prefix:                6749
RIPE Region transit ASes present in the Internet Routing Table:    1937
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          23
Number of RIPE addresses announced to Internet:               392009120
    Equivalent to 23 /8s, 93 /16s and 149 /24s
    Percentage of available RIPE address space announced:          83.4

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:                   23524
    Total LACNIC prefixes after maximum aggregation:               5849
    LACNIC Deaggregation factor:                                   4.02
Prefixes being announced from the LACNIC address blocks:          21683
    Unique aggregates announced from the LACNIC address blocks:   11890
LACNIC Region origin ASes present in the Internet Routing Table:   1082
    LACNIC Prefixes per ASN:                                      20.04
LACNIC Region origin ASes announcing only one prefix:               342
LACNIC Region transit ASes present in the Internet Routing Table:   179
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        25
Number of LACNIC addresses announced to Internet:              61816320
    Equivalent to 3 /8s, 175 /16s and 62 /24s
    Percentage of available LACNIC address space announced:        61.4

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:                   4816
    Total AfriNIC prefixes after maximum aggregation:              1387
    AfriNIC Deaggregation factor:                                  3.47
Prefixes being announced from the AfriNIC address blocks:          4519
    Unique aggregates announced from the AfriNIC address blocks:   1351
AfriNIC Region origin ASes present in the Internet Routing Table:   284
    AfriNIC Prefixes per ASN:                                     15.91
AfriNIC Region origin ASes announcing only one prefix:               85
AfriNIC Region transit ASes present in the Internet Routing Table:   55
Average AfriNIC Region AS path length visible:                      3.9
    Max AfriNIC Region AS path length visible:                       15
Number of AfriNIC addresses announced to Internet:             10140928
    Equivalent to 0 /8s, 154 /16s and 189 /24s
    Percentage of available AfriNIC address space announced:       30.2

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     1693       6929         393   Korea Telecom (KIX)
17488     1532        121          96   Hathway IP Over Cable Interne
 4755     1177        405         182   TATA Communications formerly 
 9583     1086         86         537   Sify Limited
 4134      927      16390         367   CHINANET-BACKBONE
 7545      774        163         105   TPG Internet Pty Ltd
18101      760        206          34   Reliance Infocom Ltd Internet
 9498      688        296          50   BHARTI BT INTERNET LTD.
24560      678        228         175   Bharti Airtel Ltd.
 9829      638        491          20   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     4324       3672         329   bellsouth.net, inc. 
  209     2653       4151         622   Qwest 
 4323     1808       1049         372   Time Warner Telecom
 1785     1737        717         139   PaeTec Communications, Inc.
20115     1594       1430         725   Charter Communications 
 7018     1447       5896        1020   AT&T WorldNet Services
 6478     1295        295         527   AT&T Worldnet Services 
 2386     1255        680         899   AT&T Data Communications Serv
 3356     1198      10978         452   Level 3 Communications, LLC 
11492     1193        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     1247        188           7   TEDATA
 3292      453       1763         393   TDC Tele Danmark
30890      436         86         194   SC Kappa Invexim SRL
12479      405        578           6   Uni2 Autonomous System
 3301      342       1685         307   TeliaNet Sweden
 3215      339       3017         108   France Telecom Transpac
 3320      337       7074         294   Deutsche Telekom AG
 8866      337        109          22   Bulgarian Telecommunication C
29049      324         26           3   AzerSat LLC.
 8551      313        288          40   Bezeq International

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     1441       2831         235   UniNet S.A. de C.V. 
10620      839        191          98   TVCABLE BOGOTA 
22047      607        302          14   VTR PUNTO NET S.A. 
 7303      520        260          80   Telecom Argentina Stet-France
11830      520        294          42   Instituto Costarricense de El
16814      491         31          10   NSS, S.A. 
 6471      442         95          32   ENTEL CHILE S.A. 
11172      410        102          72   Servicios Alestra S.A de C.V 
 7738      397        794          28   Telecomunicacoes da Bahia S.A
28573      386        518          25   NET Servicos de Comunicao 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      831         74          30   LINKdotNET AS number
20858      292         34           3   This AS will be used to conne
 3741      272        858         232   The Internet Solution 
 2018      242        215         142   Tertiary Education Network 
 6713      159        150          15   Itissalat Al-MAGHRIB
33783      148         10           8   EEPAD TISP TELECOM & INTERNET
29571      137         15           8   Ci Telecom Autonomous system 
 5536      123          8           9   Internet Egypt Network
 5713      115        507          65   Telkom SA Ltd 
33776      109          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
 6389     4324       3672         329   bellsouth.net, inc. 
  209     2653       4151         622   Qwest 
 4323     1808       1049         372   Time Warner Telecom
 1785     1737        717         139   PaeTec Communications, Inc.
 4766     1693       6929         393   Korea Telecom (KIX)
20115     1594       1430         725   Charter Communications 
17488     1532        121          96   Hathway IP Over Cable Interne
 7018     1447       5896        1020   AT&T WorldNet Services
 8151     1441       2831         235   UniNet S.A. de C.V. 
 6478     1295        295         527   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      2653        2031      Qwest 
 1785      1737        1598      PaeTec Communications, Inc.
 4323      1808        1436      Time Warner Telecom
17488      1532        1436      Hathway IP Over Cable Interne
 4766      1693        1300      Korea Telecom (KIX)
 8452      1247        1240      TEDATA
 8151      1441        1206      UniNet S.A. de C.V. 
11492      1193        1182      Cable One 
18566      1061        1051      Covad Communications 
 4755      1177         995      TATA Communications formerly 

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
41.220.16.0/20        8668     TelOne Zimbabwe P/L
41.223.112.0/22       5713     Telkom SA Ltd 
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      /11:56      /12:163     
/13:321     /14:586     /15:1143    /16:10388   /17:4640    /18:7977    
/19:17040   /20:20218   /21:19919   /22:25356   /23:25314   /24:148648  
/25:646     /26:799     /27:363     /28:115     /29:37      /30:9       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2809          4324      bellsouth.net, inc. 
 4766     1398          1693      Korea Telecom (KIX)
  209     1358          2653      Qwest 
17488     1301          1532      Hathway IP Over Cable Interne
 8452     1226          1247      TEDATA
11492     1149          1193      Cable One 
 1785     1145          1737      PaeTec Communications, Inc.
18566     1042          1061      Covad Communications 
 2386      957          1255      AT&T Data Communications Serv
 4323      942          1808      Time Warner Telecom

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

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

   4:13        8:172      12:2198     13:3        15:19       16:3      
  17:4        20:35       24:1122     32:51       38:550      40:97     
  41:2002     43:1        44:2        47:21       52:3        55:2      
  56:3        57:25       58:530      59:618      60:461      61:1104   
  62:1122     63:2023     64:3604     65:2430     66:3595     67:1506   
  68:688      69:2537     70:512      71:164      72:1651     73:2      
  74:1462     75:206      76:309      77:835      78:540      79:306    
  80:955      81:821      82:533      83:407      84:598      85:1009   
  86:396      87:623      88:351      89:1490     90:44       91:2089   
  92:331      93:1127     94:1209     95:825      96:106      97:184    
  98:243      99:17      109:1       110:32      112:91      113:89     
 114:223     115:235     116:1127    117:476     118:285     119:658    
 120:142     121:712     122:981     123:552     124:960     125:1302   
 128:221     129:226     130:129     131:415     132:74      133:9      
 134:186     135:39      136:241     137:153     138:147     139:77     
 140:419     141:104     142:391     143:331     144:323     145:43     
 146:376     147:150     148:513     149:239     150:147     151:200    
 152:151     153:136     154:11      155:266     156:167     157:297    
 158:133     159:273     160:281     161:133     162:271     163:148    
 164:478     165:533     166:276     167:361     168:682     169:162    
 170:475     171:38      172:10      173:249     174:153     178:1      
 186:7       187:69      188:9       189:304     190:2704    192:5808   
 193:4219    194:3330    195:2677    196:1069    198:3729    199:3317   
 200:5503    201:1361    202:7861    203:8069    204:3795    205:2158   
 206:2389    207:2797    208:3896    209:3450    210:2632    211:1107   
 212:1503    213:1693    214:70      215:25      216:4542    217:1268   
 218:360     219:416     220:1208    221:449     222:261    

End of report




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