Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Feb 11 12:26:34 CST 2011


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 APOPS, NANOG, AfNOG, AusNOG, SANOG, PacNOG, LacNOG,
CaribNOG and the RIPE Routing Working Group.

Daily listings are sent to bgp-stats at lists.apnic.net

For historical data, please see http://thyme.rand.apnic.net.

If you have any comments please contact Philip Smith <pfs at cisco.com>.

Routing Table Report   04:00 +10GMT Sat 12 Feb, 2011

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

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

BGP routing table entries examined:                              345778
    Prefixes after maximum aggregation:                          155766
    Deaggregation factor:                                          2.22
    Unique aggregates announced to Internet:                     170953
Total ASes present in the Internet Routing Table:                 35854
    Prefixes per ASN:                                              9.64
Origin-only ASes present in the Internet Routing Table:           30896
Origin ASes announcing only one prefix:                           14961
Transit ASes present in the Internet Routing Table:                4958
Transit-only ASes present in the Internet Routing Table:            124
Average AS path length visible in the Internet Routing Table:       4.3
    Max AS path length visible:                                      31
    Max AS path prepend of ASN (36992)                               29
Prefixes from unregistered ASNs in the Routing Table:               332
    Unregistered ASNs in the Routing Table:                         131
Number of 32-bit ASNs allocated by the RIRs:                       1110
Prefixes from 32-bit ASNs in the Routing Table:                       1
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            205
Number of addresses announced to Internet:                   2391302464
    Equivalent to 142 /8s, 136 /16s and 97 /24s
    Percentage of available address space announced:               64.5
    Percentage of allocated address space announced:               64.5
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               87.9
Total number of prefixes smaller than registry allocations:      142918

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

Prefixes being announced by APNIC Region ASes:                    85341
    Total APNIC prefixes after maximum aggregation:               28875
    APNIC Deaggregation factor:                                    2.96
Prefixes being announced from the APNIC address blocks:           82125
    Unique aggregates announced from the APNIC address blocks:    35753
APNIC Region origin ASes present in the Internet Routing Table:    4317
    APNIC Prefixes per ASN:                                       19.02
APNIC Region origin ASes announcing only one prefix:               1203
APNIC Region transit ASes present in the Internet Routing Table:    690
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         17
Number of APNIC addresses announced to Internet:              587134752
    Equivalent to 34 /8s, 254 /16s and 247 /24s
    Percentage of available APNIC address space announced:         74.5

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,  36/8,  39/8,  42/8,  43/8,
                        49/8,  58/8,  59/8,  60/8,  61/8, 101/8, 103/8,
                       106/8, 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:                    139230
    Total ARIN prefixes after maximum aggregation:                71212
    ARIN Deaggregation factor:                                     1.96
Prefixes being announced from the ARIN address blocks:           110113
    Unique aggregates announced from the ARIN address blocks:     44882
ARIN Region origin ASes present in the Internet Routing Table:    14196
    ARIN Prefixes per ASN:                                         7.76
ARIN Region origin ASes announcing only one prefix:                5420
ARIN Region transit ASes present in the Internet Routing Table:    1476
Average ARIN Region AS path length visible:                         4.0
    Max ARIN Region AS path length visible:                          23
Number of ARIN addresses announced to Internet:               786454144
    Equivalent to 46 /8s, 224 /16s and 86 /24s
    Percentage of available ARIN address space announced:          62.5

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,  23/8,  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,
                        53/8,  54/8,  55/8,  56/8,  57/8,  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, 100/8, 104/8, 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:                     81886
    Total RIPE prefixes after maximum aggregation:                46434
    RIPE Deaggregation factor:                                     1.76
Prefixes being announced from the RIPE address blocks:            75207
    Unique aggregates announced from the RIPE address blocks:     48805
RIPE Region origin ASes present in the Internet Routing Table:    15293
    RIPE Prefixes per ASN:                                         4.92
RIPE Region origin ASes announcing only one prefix:                7772
RIPE Region transit ASes present in the Internet Routing Table:    2377
Average RIPE Region AS path length visible:                         4.6
    Max RIPE Region AS path length visible:                          30
Number of RIPE addresses announced to Internet:               459033920
    Equivalent to 27 /8s, 92 /16s and 77 /24s
    Percentage of available RIPE address space announced:          73.9

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, 56320-58367
                       196608-198655
RIPE Address Blocks      2/8,   5/8,  25/8,  31/8,  37/8,  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, 185/8, 193/8, 194/8, 195/8, 212/8,
                       213/8, 217/8,

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

Prefixes being announced by LACNIC Region ASes:                   31630
    Total LACNIC prefixes after maximum aggregation:               7330
    LACNIC Deaggregation factor:                                   4.32
Prefixes being announced from the LACNIC address blocks:          30383
    Unique aggregates announced from the LACNIC address blocks:   15919
LACNIC Region origin ASes present in the Internet Routing Table:   1430
    LACNIC Prefixes per ASN:                                      21.25
LACNIC Region origin ASes announcing only one prefix:               434
LACNIC Region transit ASes present in the Internet Routing Table:   258
Average LACNIC Region AS path length visible:                       4.4
    Max LACNIC Region AS path length visible:                        19
Number of LACNIC addresses announced to Internet:              80671104
    Equivalent to 4 /8s, 206 /16s and 241 /24s
    Percentage of available LACNIC address space announced:        53.4

LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       262144-263167 plus ERX transfers
LACNIC Address Blocks  177/8, 179/8, 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:                   7471
    Total AfriNIC prefixes after maximum aggregation:              1804
    AfriNIC Deaggregation factor:                                  4.14
Prefixes being announced from the AfriNIC address blocks:          5880
    Unique aggregates announced from the AfriNIC address blocks:   1832
AfriNIC Region origin ASes present in the Internet Routing Table:   435
    AfriNIC Prefixes per ASN:                                     13.52
AfriNIC Region origin ASes announcing only one prefix:              131
AfriNIC Region transit ASes present in the Internet Routing Table:   93
Average AfriNIC Region AS path length visible:                      5.3
    Max AfriNIC Region AS path length visible:                       31
Number of AfriNIC addresses announced to Internet:             21855488
    Equivalent to 1 /8s, 77 /16s and 125 /24s
    Percentage of available AfriNIC address space announced:       32.6

AfriNIC AS Blocks      36864-37887, 327680-328703 & ERX transfers
AfriNIC Address Blocks  41/8, 102/8, 105/8, 197/8,

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 4766     1991       9487         584   Korea Telecom (KIX)
 7545     1633        301          84   TPG Internet Pty Ltd
 4755     1412        633         161   TATA Communications formerly 
17974     1408        467          28   PT TELEKOMUNIKASI INDONESIA
24560     1108        323         181   Bharti Airtel Ltd., Telemedia
 4808     1042       2142         294   CNCGROUP IP network: China169
 9583     1042         76         487   Sify Limited
17488      952        162         104   Hathway IP Over Cable Interne
18101      929        117         144   Reliance Infocom Ltd Internet
 9829      898        763          42   BSNL National Internet Backbo

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

ARIN Region per AS prefix count summary
---------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6389     3704       3855         264   bellsouth.net, inc. 
 4323     2625       1109         403   Time Warner Telecom
19262     1842       4951         283   Verizon Global Networks 
 1785     1786        697         131   PaeTec Communications, Inc.
20115     1529       1534         646   Charter Communications 
 6478     1500        296          62   AT&T Worldnet Services 
 7018     1353       6673         870   AT&T WorldNet Services
 2386     1299        553         936   AT&T Data Communications Serv
11492     1282        236          73   Cable One 
18566     1282        311         104   Covad Communications 

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

RIPE Region per AS prefix count summary
---------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6830      511       1764         316   UPC Distribution Services
 9198      465        266          14   Kazakhtelecom Data Network Ad
34984      456         97         137   BILISIM TELEKOM
 3292      445       1996         387   TDC Tele Danmark
 8866      440        133          23   Bulgarian Telecommunication C
 3320      406       7620         355   Deutsche Telekom AG
 8551      403        353          46   Bezeq International
20940      401         93         308   Akamai Technologies European 
  702      395       1800         308   UUNET - Commercial IP service
 3301      383       1822         341   TeliaNet Sweden

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

LACNIC Region per AS prefix count summary
-----------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
10620     1371        255         165   TVCABLE BOGOTA 
 8151     1342       2663         359   UniNet S.A. de C.V. 
28573     1237        961          82   NET Servicos de Comunicao S.A
 6503     1189        355          78   AVANTEL, S.A. 
 7303      872        445         142   Telecom Argentina Stet-France
14420      638         57          92   CORPORACION NACIONAL DE TELEC
22047      543        310          15   VTR PUNTO NET S.A. 
 3816      503        220          94   Empresa Nacional de Telecomun
 7738      478        922          30   Telecomunicacoes da Bahia S.A
27947      458         53          53   Telconet S.A

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

AfriNIC Region per AS prefix count summary
------------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8452      771        445          11   TEDATA
24863      763        147          39   LINKdotNET AS number
36992      584        305          17   Etisalat MISR
 3741      264        987         226   The Internet Solution 
15475      220         56           9   Nile Online
24835      218         78          10   RAYA Telecom - Egypt
 6713      205        199          12   Itissalat Al-MAGHRIB
33776      194         12          15   Starcomms Nigeria Limited
29571      193         19          11   Ci Telecom Autonomous system 
16637      147        422          83   MTN Network Solutions

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

Global Per AS prefix count summary
----------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6389     3704       3855         264   bellsouth.net, inc. 
 4323     2625       1109         403   Time Warner Telecom
 4766     1991       9487         584   Korea Telecom (KIX)
19262     1842       4951         283   Verizon Global Networks 
 1785     1786        697         131   PaeTec Communications, Inc.
 7545     1633        301          84   TPG Internet Pty Ltd
20115     1529       1534         646   Charter Communications 
 6478     1500        296          62   AT&T Worldnet Services 
 4755     1412        633         161   TATA Communications formerly 
17974     1408        467          28   PT TELEKOMUNIKASI INDONESIA

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

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

  ASN   No of nets  Net Savings Description
 4323      2625        2222      Time Warner Telecom
 1785      1786        1655      PaeTec Communications, Inc.
19262      1842        1559      Verizon Global Networks 
 7545      1633        1549      TPG Internet Pty Ltd
 6478      1500        1438      AT&T Worldnet Services 
 4766      1991        1407      Korea Telecom (KIX)
17974      1408        1380      PT TELEKOMUNIKASI INDONESIA
 4755      1412        1251      TATA Communications formerly 
11492      1282        1209      Cable One 
10620      1371        1206      TVCABLE BOGOTA 

Complete listing at http://thyme.rand.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        4323       Time Warner Telecom
13746   UNALLOCATED  12.24.56.0/24         7018       AT&T WorldNet Servic
32567   UNALLOCATED  12.25.107.0/24        4323       Time Warner Telecom
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.rand.apnic.net/current/data-badAS

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

Network            Origin AS  Description
5.0.0.0/16           12654     RIPE NCC RIS Project
5.1.0.0/21           12654     RIPE NCC RIS Project
5.1.24.0/24          12654     RIPE NCC RIS Project
24.129.192.0/19       7922     Continental Cablevision 
31.28.0.0/19         29076     Hoster.RU autonomous system
37.0.0.0/16          12654     RIPE NCC RIS Project
37.1.0.0/21          12654     RIPE NCC RIS Project
37.1.24.0/24         12654     RIPE NCC RIS Project
39.0.0.0/8             237     Merit Network 
41.57.192.0/18       22750     BCSNET

Complete listing at http://thyme.rand.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        /8:21       /9:10      /10:26      /11:71      /12:215     
/13:444     /14:764     /15:1364    /16:11492   /17:5636    /18:9315    
/19:18823   /20:24344   /21:24767   /22:32958   /23:31632   /24:181055  
/25:986     /26:1087    /27:570     /28:171     /29:16      /30:3       
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2283          3704      bellsouth.net, inc. 
 6478     1454          1500      AT&T Worldnet Services 
 4323     1414          2625      Time Warner Telecom
10620     1262          1371      TVCABLE BOGOTA 
18566     1260          1282      Covad Communications 
11492     1239          1282      Cable One 
 7011     1062          1165      Citizens Utilities 
 1785     1055          1786      PaeTec Communications, Inc.
 6503      966          1189      AVANTEL, S.A. 
19262      954          1842      Verizon Global Networks 

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

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

   1:177       2:45        4:13        5:1         8:331      12:2028   
  13:1        14:412      15:15       16:3        17:8        20:9      
  23:1        24:1480     27:579      32:61       33:5        34:2      
  37:1        38:701      40:101      41:2285     44:3        46:585    
  47:5        49:145      50:82       52:12       55:7        56:2      
  57:32       58:868      59:477      60:391      61:1114     62:1095   
  63:1944     64:3781     65:2363     66:4163     67:1761     68:1025   
  69:2914     70:739      71:400      72:2006     73:1        74:2324   
  75:292      76:345      77:864      78:705      79:444      80:1048   
  81:824      82:538      83:471      84:645      85:1052     86:553    
  87:740      88:355      89:1574     90:156      91:3462     92:494    
  93:1040     94:1200     95:754      96:428      97:251      98:792    
  99:33      101:27      107:3       108:88      109:955     110:471    
 111:695     112:311     113:360     114:502     115:640     116:934    
 117:679     118:668     119:1021    120:239     121:702     122:1634   
 123:1061    124:1270    125:1225    128:264     129:153     130:172    
 131:570     132:109     133:20      134:217     135:49      136:216    
 137:147     138:291     139:117     140:492     141:196     142:358    
 143:387     144:483     145:51      146:431     147:202     148:635    
 149:274     150:161     151:229     152:306     153:179     154:3      
 155:350     156:176     157:342     158:129     159:380     160:314    
 161:205     162:272     163:161     164:486     165:339     166:498    
 167:422     168:742     169:151     170:750     171:69      172:2      
 173:1289    174:519     175:315     176:1       177:4       178:758    
 180:796     182:350     183:240     184:209     186:988     187:809    
 188:908     189:1044    190:4340    192:5797    193:4799    194:3504   
 195:2955    196:1177    197:3       198:3576    199:3829    200:5573   
 201:1580    202:8272    203:8432    204:4115    205:2337    206:2631   
 207:3081    208:3899    209:3496    210:2650    211:1334    212:1886   
 213:1731    214:756     215:62      216:4885    217:1612    218:532    
 219:376     220:1203    221:449     222:313     223:97     

End of report




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