Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Jul 2 13:13:18 CDT 2010


This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.

The posting is sent to NANOG, AfNOG, AusNOG, SANOG, PacNOG, LacNOG and
the RIPE Routing Working Group.

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 03 Jul, 2010

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

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

BGP routing table entries examined:                              324314
    Prefixes after maximum aggregation:                          149409
    Deaggregation factor:                                          2.17
    Unique aggregates announced to Internet:                     158777
Total ASes present in the Internet Routing Table:                 34277
    Prefixes per ASN:                                              9.46
Origin-only ASes present in the Internet Routing Table:           29765
Origin ASes announcing only one prefix:                           14419
Transit ASes present in the Internet Routing Table:                4512
Transit-only ASes present in the Internet Routing Table:            107
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      25
    Max AS path prepend of ASN (41664)                               21
Prefixes from unregistered ASNs in the Routing Table:               269
    Unregistered ASNs in the Routing Table:                         114
Number of 32-bit ASNs allocated by the RIRs:                        657
Prefixes from 32-bit ASNs in the Routing Table:                     777
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            161
Number of addresses announced to Internet:                   2252946208
    Equivalent to 134 /8s, 73 /16s and 59 /24s
    Percentage of available address space announced:               60.8
    Percentage of allocated address space announced:               65.5
    Percentage of available address space allocated:               92.8
    Percentage of address space in use by end-sites:               83.6
Total number of prefixes smaller than registry allocations:      154912

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

Prefixes being announced by APNIC Region ASes:                    78350
    Total APNIC prefixes after maximum aggregation:               27003
    APNIC Deaggregation factor:                                    2.90
Prefixes being announced from the APNIC address blocks:           75198
    Unique aggregates announced from the APNIC address blocks:    33264
APNIC Region origin ASes present in the Internet Routing Table:    4098
    APNIC Prefixes per ASN:                                       18.35
APNIC Region origin ASes announcing only one prefix:               1122
APNIC Region transit ASes present in the Internet Routing Table:    640
Average APNIC Region AS path length visible:                        3.7
    Max APNIC Region AS path length visible:                         15
Number of APNIC addresses announced to Internet:              525699616
    Equivalent to 31 /8s, 85 /16s and 138 /24s
    Percentage of available APNIC address space announced:         78.3

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079
                       55296-56319, 131072-132095
APNIC Address Blocks     1/8,  14/8,  27/8,  43/8,  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, 133/8, 175/8, 180/8,
                       182/8, 183/8, 202/8, 203/8, 210/8, 211/8, 218/8,
                       219/8, 220/8, 221/8, 222/8, 223/8,

ARIN Region Analysis Summary
----------------------------

Prefixes being announced by ARIN Region ASes:                    134542
    Total ARIN prefixes after maximum aggregation:                69307
    ARIN Deaggregation factor:                                     1.94
Prefixes being announced from the ARIN address blocks:           107370
    Unique aggregates announced from the ARIN address blocks:     41845
ARIN Region origin ASes present in the Internet Routing Table:    13759
    ARIN Prefixes per ASN:                                         7.80
ARIN Region origin ASes announcing only one prefix:                5287
ARIN Region transit ASes present in the Internet Routing Table:    1349
Average ARIN Region AS path length visible:                         3.4
    Max ARIN Region AS path length visible:                          22
Number of ARIN addresses announced to Internet:               730656800
    Equivalent to 43 /8s, 140 /16s and 240 /24s
    Percentage of available ARIN address space announced:          62.2

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, 393216-394239
ARIN Address Blocks      3/8,   4/8,   6/8,   7/8,   8/8,   9/8,  11/8,
                        12/8,  13/8,  15/8,  16/8,  17/8,  18/8,  19/8,
                        20/8,  21/8,  22/8,  24/8,  26/8,  28/8,  29/8,
                        30/8,  32/8,  33/8,  34/8,  35/8,  38/8,  40/8,
                        44/8,  45/8,  47/8,  48/8,  50/8,  52/8,  54/8,
                        55/8,  56/8,  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, 107/8,
                       108/8, 173/8, 174/8, 184/8, 199/8, 204/8, 205/8,
                       206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8,
                      

RIPE Region Analysis Summary
----------------------------

Prefixes being announced by RIPE Region ASes:                     74631
    Total RIPE prefixes after maximum aggregation:                43298
    RIPE Deaggregation factor:                                     1.72
Prefixes being announced from the RIPE address blocks:            67750
    Unique aggregates announced from the RIPE address blocks:     44478
RIPE Region origin ASes present in the Internet Routing Table:    14568
    RIPE Prefixes per ASN:                                         4.65
RIPE Region origin ASes announcing only one prefix:                7503
RIPE Region transit ASes present in the Internet Routing Table:    2158
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          24
Number of RIPE addresses announced to Internet:               433071392
    Equivalent to 25 /8s, 208 /16s and 37 /24s
    Percentage of available RIPE address space announced:          75.9

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, 196608-197631
RIPE Address Blocks      2/8,  25/8,  31/8,  46/8,  51/8,  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, 176/8, 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:                   28481
    Total LACNIC prefixes after maximum aggregation:               6882
    LACNIC Deaggregation factor:                                   4.14
Prefixes being announced from the LACNIC address blocks:          27028
    Unique aggregates announced from the LACNIC address blocks:   14292
LACNIC Region origin ASes present in the Internet Routing Table:   1296
    LACNIC Prefixes per ASN:                                      20.85
LACNIC Region origin ASes announcing only one prefix:               394
LACNIC Region transit ASes present in the Internet Routing Table:   228
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        25
Number of LACNIC addresses announced to Internet:              74937536
    Equivalent to 4 /8s, 119 /16s and 116 /24s
    Percentage of available LACNIC address space announced:        55.8

LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       262144-263167 plus ERX transfers
LACNIC Address Blocks  177/8, 181/8, 186/8, 187/8, 189/8, 190/8, 200/8,
                       201/8,

AfriNIC Region Analysis Summary
-------------------------------

Prefixes being announced by AfriNIC Region ASes:                   7313
    Total AfriNIC prefixes after maximum aggregation:              1862
    AfriNIC Deaggregation factor:                                  3.93
Prefixes being announced from the AfriNIC address blocks:          5614
    Unique aggregates announced from the AfriNIC address blocks:   1738
AfriNIC Region origin ASes present in the Internet Routing Table:   378
    AfriNIC Prefixes per ASN:                                     14.85
AfriNIC Region origin ASes announcing only one prefix:              113
AfriNIC Region transit ASes present in the Internet Routing Table:   86
Average AfriNIC Region AS path length visible:                      3.7
    Max AfriNIC Region AS path length visible:                       14
Number of AfriNIC addresses announced to Internet:             19531520
    Equivalent to 1 /8s, 42 /16s and 7 /24s
    Percentage of available AfriNIC address space announced:       58.2

AfriNIC AS Blocks      36864-37887, 327680-328703 & 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     1851       8423         487   Korea Telecom (KIX)
 4755     1367        295         161   TATA Communications formerly 
 7545     1345        232         105   TPG Internet Pty Ltd
17488     1322        140         131   Hathway IP Over Cable Interne
17974     1152        285          30   PT TELEKOMUNIKASI INDONESIA
 9583      994         73         487   Sify Limited
24560      927        307         171   Bharti Airtel Ltd., Telemedia
 4134      876      21292         408   CHINANET-BACKBONE
 4808      827       1572         216   CNCGROUP IP network: China169
 9829      810        684          41   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     3910       3734         293   bellsouth.net, inc. 
 4323     2715       1114         394   Time Warner Telecom
19262     1825       4562         275   Verizon Global Networks 
 1785     1777        698         129   PaeTec Communications, Inc.
20115     1561       1520         655   Charter Communications 
 7018     1508       5736         957   AT&T WorldNet Services
 6478     1289        260          91   AT&T Worldnet Services 
 2386     1282        568         906   AT&T Data Communications Serv
 3356     1176      10875         404   Level 3 Communications, LLC 
22773     1167       2859          65   Cox Communications, Inc.

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
35805      648         56           6   United Telecom of Georgia
 3292      452       2027         393   TDC Tele Danmark
30890      443        111         205   Evolva Telecom
  702      411       1869         327   UUNET - Commercial IP service
 9198      408        202          13   Kazakhtelecom Data Network Ad
 8866      402        117          18   Bulgarian Telecommunication C
 8551      400        353          46   Bezeq International
 3320      373       7329         324   Deutsche Telekom AG
 3301      372       1414         327   TeliaNet Sweden
34984      360         89         185   BILISIM TELEKOM

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     1518       3017         245   UniNet S.A. de C.V. 
10620     1066        238         150   TVCABLE BOGOTA 
28573     1023        791          97   NET Servicos de Comunicao S.A
 7303      748        385         106   Telecom Argentina Stet-France
 6503      554        137         183   AVANTEL, S.A. 
22047      548        310          15   VTR PUNTO NET S.A. 
 3816      495        217          81   Empresa Nacional de Telecomun
 7738      477        922          30   Telecomunicacoes da Bahia S.A
14420      471         33          69   ANDINATEL S.A. 
11172      449         99          76   Servicios Alestra S.A de C.V 

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     1152        445          10   TEDATA
24863      728        147          39   LINKdotNET AS number
36992      644        279         184   Etisalat MISR
 3741      267        834         228   The Internet Solution 
33776      219         12          11   Starcomms Nigeria Limited
 2018      210        244          61   Tertiary Education Network 
 6713      195        186          16   Itissalat Al-MAGHRIB
24835      192         78          10   RAYA Telecom - Egypt
29571      176         19          10   Ci Telecom Autonomous system 
29975      133        506          14   Vodacom

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     3910       3734         293   bellsouth.net, inc. 
 4323     2715       1114         394   Time Warner Telecom
 4766     1851       8423         487   Korea Telecom (KIX)
19262     1825       4562         275   Verizon Global Networks 
 1785     1777        698         129   PaeTec Communications, Inc.
20115     1561       1520         655   Charter Communications 
 8151     1518       3017         245   UniNet S.A. de C.V. 
 7018     1508       5736         957   AT&T WorldNet Services
 4755     1367        295         161   TATA Communications formerly 
 7545     1345        232         105   TPG Internet Pty Ltd

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

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

  ASN   No of nets  Net Savings Description
 4323      2715        2321      Time Warner Telecom
 1785      1777        1648      PaeTec Communications, Inc.
19262      1825        1550      Verizon Global Networks 
 4766      1851        1364      Korea Telecom (KIX)
 8151      1518        1273      UniNet S.A. de C.V. 
 7545      1345        1240      TPG Internet Pty Ltd
 4755      1367        1206      TATA Communications formerly 
 6478      1289        1198      AT&T Worldnet Services 
17488      1322        1191      Hathway IP Over Cable Interne
 8452      1152        1142      TEDATA

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  12.39.155.0/24        7018       AT&T WorldNet Servic
26973   UNALLOCATED  12.39.159.0/24        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
31.0.0.0/16          12654     RIPE NCC RIS Project
31.1.0.0/21          12654     RIPE NCC RIS Project
31.1.24.0/24         12654     RIPE NCC RIS Project
41.222.79.0/24       36938     >>UNKNOWN<<
41.223.92.0/22       36936     >>UNKNOWN<<
41.223.188.0/24      22351     Intelsat 
41.223.189.0/24       6453     Teleglobe Inc. 
41.223.196.0/24      36990     Alkan Telecom Ltd
41.223.197.0/24      36990     Alkan Telecom Ltd
41.223.198.0/24      36990     Alkan Telecom Ltd

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        /8:20       /9:10      /10:25      /11:68      /12:196     
/13:406     /14:707     /15:1285    /16:11156   /17:5338    /18:9126    
/19:18399   /20:22806   /21:22871   /22:29932   /23:29604   /24:169130  
/25:1031    /26:1320    /27:707     /28:117     /29:47      /30:6       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2504          3910      bellsouth.net, inc. 
 4766     1482          1851      Korea Telecom (KIX)
 4323     1396          2715      Time Warner Telecom
 1785     1239          1777      PaeTec Communications, Inc.
11492     1070          1160      Cable One 
17488     1069          1322      Hathway IP Over Cable Interne
18566     1069          1088      Covad Communications 
 8452     1040          1152      TEDATA
10620      982          1066      TVCABLE BOGOTA 
 7018      911          1508      AT&T WorldNet Services

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

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

   1:6         2:10        4:13        8:286      12:2012     13:7      
  14:1        15:23       16:3        17:8        20:17       24:1452   
  27:187      31:1        32:48       33:12       38:679      40:98     
  41:2440     44:3        47:12       52:9        55:4        56:2      
  57:25       58:749      59:501      60:459      61:1090     62:1055   
  63:1977     64:3659     65:2361     66:4037     67:1810     68:1105   
  69:2874     70:723      71:380      72:1953     73:2        74:2263   
  75:253      76:313      77:952      78:604      79:437      80:981    
  81:799      82:489      83:435      84:710      85:1053     86:452    
  87:678      88:342      89:1567     90:93       91:2847     92:489    
  93:985      94:1400     95:637      96:352      97:207      98:574    
  99:29      108:97      109:551     110:364     111:535     112:266    
 113:315     114:427     115:563     116:1073    117:661     118:483    
 119:944     120:127     121:728     122:1452    123:927     124:1122   
 125:1321    128:226     129:202     130:196     131:555     132:251    
 133:17      134:197     135:42      136:241     137:159     138:264    
 139:104     140:480     141:198     142:346     143:392     144:452    
 145:50      146:435     147:168     148:606     149:301     150:149    
 151:230     152:302     153:169     154:2       155:328     156:157    
 157:319     158:107     159:378     160:316     161:181     162:254    
 163:176     164:408     165:365     166:462     167:404     168:652    
 169:157     170:713     171:58      172:2       173:875     174:468    
 175:105     176:1       178:248     180:516     182:147     183:228    
 184:103     186:487     187:387     188:993     189:744     190:3742   
 192:5739    193:4714    194:3365    195:2798    196:1181    198:3573   
 199:3452    200:5258    201:1523    202:7942    203:8278    204:4070   
 205:2339    206:2521    207:3105    208:3871    209:3443    210:2523   
 211:1265    212:1694    213:1666    214:637     215:68      216:4659   
 217:1522    218:493     219:379     220:1134    221:398     222:314    
 223:1      

End of report




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