Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Mar 20 13:12:54 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 21 Mar, 2009

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

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

BGP routing table entries examined:                              283363
    Prefixes after maximum aggregation:                          134180
    Deaggregation factor:                                          2.11
    Unique aggregates announced to Internet:                     138749
Total ASes present in the Internet Routing Table:                 30859
    Prefixes per ASN:                                              9.18
Origin-only ASes present in the Internet Routing Table:           26860
Origin ASes announcing only one prefix:                           13062
Transit ASes present in the Internet Routing Table:                3999
Transit-only ASes present in the Internet Routing Table:             90
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:               498
    Unregistered ASNs in the Routing Table:                         166
Number of 32-bit ASNs allocated by the RIRs:                        132
Prefixes from 32-bit ASNs in the Routing Table:                      19
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            238
Number of addresses announced to Internet:                   2017104896
    Equivalent to 120 /8s, 58 /16s and 148 /24s
    Percentage of available address space announced:               54.4
    Percentage of allocated address space announced:               63.6
    Percentage of available address space allocated:               85.5
    Percentage of address space in use by end-sites:               76.0
Total number of prefixes smaller than registry allocations:      139447

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

Prefixes being announced by APNIC Region ASes:                    65453
    Total APNIC prefixes after maximum aggregation:               23417
    APNIC Deaggregation factor:                                    2.80
Prefixes being announced from the APNIC address blocks:           62300
    Unique aggregates announced from the APNIC address blocks:    28437
APNIC Region origin ASes present in the Internet Routing Table:    3576
    APNIC Prefixes per ASN:                                       17.42
APNIC Region origin ASes announcing only one prefix:                963
APNIC Region transit ASes present in the Internet Routing Table:    552
Average APNIC Region AS path length visible:                        3.5
    Max APNIC Region AS path length visible:                         19
Number of APNIC addresses announced to Internet:              405339808
    Equivalent to 24 /8s, 40 /16s and 254 /24s
    Percentage of available APNIC address space announced:         80.5

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, 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:                    124216
    Total ARIN prefixes after maximum aggregation:                65427
    ARIN Deaggregation factor:                                     1.90
Prefixes being announced from the ARIN address blocks:            93638
    Unique aggregates announced from the ARIN address blocks:     36241
ARIN Region origin ASes present in the Internet Routing Table:    12858
    ARIN Prefixes per ASN:                                         7.28
ARIN Region origin ASes announcing only one prefix:                4944
ARIN Region transit ASes present in the Internet Routing Table:    1242
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          20
Number of ARIN addresses announced to Internet:               419705152
    Equivalent to 25 /8s, 4 /16s and 49 /24s
    Percentage of available ARIN address space announced:          80.7

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:                     64872
    Total RIPE prefixes after maximum aggregation:                37755
    RIPE Deaggregation factor:                                     1.72
Prefixes being announced from the RIPE address blocks:            59455
    Unique aggregates announced from the RIPE address blocks:     39555
RIPE Region origin ASes present in the Internet Routing Table:    12812
    RIPE Prefixes per ASN:                                         4.64
RIPE Region origin ASes announcing only one prefix:                6725
RIPE Region transit ASes present in the Internet Routing Table:    1924
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          23
Number of RIPE addresses announced to Internet:               391469984
    Equivalent to 23 /8s, 85 /16s and 91 /24s
    Percentage of available RIPE address space announced:          83.3

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:                   23523
    Total LACNIC prefixes after maximum aggregation:               5813
    LACNIC Deaggregation factor:                                   4.05
Prefixes being announced from the LACNIC address blocks:          21691
    Unique aggregates announced from the LACNIC address blocks:   11409
LACNIC Region origin ASes present in the Internet Routing Table:   1082
    LACNIC Prefixes per ASN:                                      20.05
LACNIC Region origin ASes announcing only one prefix:               343
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:              61525504
    Equivalent to 3 /8s, 170 /16s and 206 /24s
    Percentage of available LACNIC address space announced:        61.1

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:                   4836
    Total AfriNIC prefixes after maximum aggregation:              1392
    AfriNIC Deaggregation factor:                                  3.47
Prefixes being announced from the AfriNIC address blocks:          4536
    Unique aggregates announced from the AfriNIC address blocks:   1343
AfriNIC Region origin ASes present in the Internet Routing Table:   288
    AfriNIC Prefixes per ASN:                                     15.75
AfriNIC Region origin ASes announcing only one prefix:               87
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:             10131968
    Equivalent to 0 /8s, 154 /16s and 154 /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     1691       6930         393   Korea Telecom (KIX)
17488     1527        119          98   Hathway IP Over Cable Interne
 4755     1218        431         179   TATA Communications formerly 
 9583     1093         86         531   Sify Limited
 4134      925      16263         365   CHINANET-BACKBONE
 7545      765        159         104   TPG Internet Pty Ltd
18101      755        206          31   Reliance Infocom Ltd Internet
 9498      692        296          50   BHARTI BT INTERNET LTD.
24560      678        228         175   Bharti Airtel Ltd.
 9829      637        490          21   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     2908       4149         634   Qwest 
 4323     1801       1049         372   Time Warner Telecom
 1785     1732        717         139   PaeTec Communications, Inc.
20115     1593       1431         720   Charter Communications 
 7018     1445       5896        1019   AT&T WorldNet Services
 6478     1295        297         530   AT&T Worldnet Services 
 2386     1263        681         902   AT&T Data Communications Serv
11492     1194        192          12   Cable One 
 3356     1174      10976         444   Level 3 Communications, LLC 

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     1250        188           7   TEDATA
 3292      444       1762         389   TDC Tele Danmark
30890      441         87         196   SC Kappa Invexim SRL
12479      404        578           6   Uni2 Autonomous System
 3320      353       7081         296   Deutsche Telekom AG
 3301      344       1686         309   TeliaNet Sweden
 8866      337        109          22   Bulgarian Telecommunication C
 3215      336       2985         109   France Telecom Transpac
29049      321         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     1444       2832         234   UniNet S.A. de C.V. 
10620      845        191          80   TVCABLE BOGOTA 
22047      606        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      441         95          32   ENTEL CHILE S.A. 
11172      406        102          72   Servicios Alestra S.A de C.V 
 7738      397        794          28   Telecomunicacoes da Bahia S.A
28573      385        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      829         74          30   LINKdotNET AS number
20858      292         34           3   This AS will be used to conne
 3741      272        858         232   The Internet Solution 
 2018      241        215         141   Tertiary Education Network 
 6713      159        150          15   Itissalat Al-MAGHRIB
33783      150         10           8   EEPAD TISP TELECOM & INTERNET
29571      132         15           8   Ci Telecom Autonomous system 
 5536      123          8           9   Internet Egypt Network
 5713      115        507          65   Telkom SA Ltd 
33776      112          6           6   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     2908       4149         634   Qwest 
 4323     1801       1049         372   Time Warner Telecom
 1785     1732        717         139   PaeTec Communications, Inc.
 4766     1691       6930         393   Korea Telecom (KIX)
20115     1593       1431         720   Charter Communications 
17488     1527        119          98   Hathway IP Over Cable Interne
 7018     1445       5896        1019   AT&T WorldNet Services
 8151     1444       2832         234   UniNet S.A. de C.V. 
 6478     1295        297         530   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      2908        2274      Qwest 
 1785      1732        1593      PaeTec Communications, Inc.
 4323      1801        1429      Time Warner Telecom
17488      1527        1429      Hathway IP Over Cable Interne
 4766      1691        1298      Korea Telecom (KIX)
 8452      1250        1243      TEDATA
 8151      1444        1210      UniNet S.A. de C.V. 
11492      1194        1182      Cable One 
18566      1061        1051      Covad Communications 
 4755      1218        1039      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      /11:55      /12:163     
/13:320     /14:580     /15:1134    /16:10384   /17:4638    /18:7988    
/19:17022   /20:20163   /21:19860   /22:25312   /23:25214   /24:148254  
/25:697     /26:861     /27:545     /28:106     /29:8       /30:3       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2806          4324      bellsouth.net, inc. 
  209     1615          2908      Qwest 
 4766     1395          1691      Korea Telecom (KIX)
17488     1297          1527      Hathway IP Over Cable Interne
 8452     1229          1250      TEDATA
11492     1149          1194      Cable One 
 1785     1140          1732      PaeTec Communications, Inc.
18566     1042          1061      Covad Communications 
 2386      964          1263      AT&T Data Communications Serv
 9583      945          1093      Sify Limited

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

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

   4:13        8:172      12:2195     13:3        15:19       16:3      
  17:4        20:35       24:1115     32:51       38:551      40:97     
  41:2009     43:1        44:2        47:21       52:3        55:2      
  56:3        57:25       58:536      59:624      60:460      61:1107   
  62:1121     63:2011     64:3549     65:2421     66:3562     67:1493   
  68:677      69:2509     70:509      71:164      72:1665     73:2      
  74:1439     75:205      76:313      77:833      78:544      79:304    
  80:958      81:824      82:560      83:411      84:596      85:1019   
  86:397      87:632      88:352      89:1491     90:45       91:2064   
  92:276      93:1110     94:1202     95:829      96:104      97:190    
  98:238      99:17      109:1       110:7       112:87      113:89     
 114:221     115:234     116:1128    117:477     118:289     119:656    
 120:138     121:708     122:981     123:564     124:958     125:1291   
 128:220     129:225     130:130     131:413     132:74      133:9      
 134:188     135:39      136:223     137:144     138:146     139:78     
 140:416     141:104     142:393     143:326     144:325     145:41     
 146:374     147:149     148:513     149:237     150:147     151:206    
 152:151     153:135     154:11      155:266     156:167     157:297    
 158:132     159:266     160:281     161:137     162:270     163:148    
 164:479     165:516     166:277     167:361     168:682     169:163    
 170:472     171:39      172:10      173:246     174:161     178:1      
 186:6       187:44      188:8       189:310     190:2709    192:5807   
 193:4216    194:3329    195:2658    196:1067    198:3729    199:3314   
 200:5500    201:1360    202:7865    203:8051    204:3783    205:2162   
 206:2359    207:2805    208:3880    209:3446    210:2635    211:1114   
 212:1493    213:1692    214:68      215:25      216:4527    217:1263   
 218:371     219:418     220:1216    221:459     222:261    

End of report




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