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Weekly Routing Table Report
From: Routing Analysis Role Account <cscora () apnic net>
Date: Sat, 13 Aug 2011 05:07:06 +1000 (EST)

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 () lists apnic net

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

If you have any comments please contact Philip Smith <pfsinoz () gmail com>.

Routing Table Report   04:00 +10GMT Sat 13 Aug, 2011

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

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

BGP routing table entries examined:                              367521
    Prefixes after maximum aggregation:                          166524
    Deaggregation factor:                                          2.21
    Unique aggregates announced to Internet:                     182354
Total ASes present in the Internet Routing Table:                 38471
    Prefixes per ASN:                                              9.55
Origin-only ASes present in the Internet Routing Table:           31933
Origin ASes announcing only one prefix:                           15342
Transit ASes present in the Internet Routing Table:                5219
Transit-only ASes present in the Internet Routing Table:            142
Average AS path length visible in the Internet Routing Table:       4.3
    Max AS path length visible:                                      34
    Max AS path prepend of ASN (22394)                               31
Prefixes from unregistered ASNs in the Routing Table:              1079
    Unregistered ASNs in the Routing Table:                         608
Number of 32-bit ASNs allocated by the RIRs:                       1645
Number of 32-bit ASNs visible in the Routing Table:                1319
Prefixes from 32-bit ASNs in the Routing Table:                    3044
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            117
Number of addresses announced to Internet:                   2493117120
    Equivalent to 148 /8s, 153 /16s and 242 /24s
    Percentage of available address space announced:               67.3
    Percentage of allocated address space announced:               67.3
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               91.2
Total number of prefixes smaller than registry allocations:      153387

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

Prefixes being announced by APNIC Region ASes:                    92175
    Total APNIC prefixes after maximum aggregation:               30502
    APNIC Deaggregation factor:                                    3.02
Prefixes being announced from the APNIC address blocks:           88686
    Unique aggregates announced from the APNIC address blocks:    37759
APNIC Region origin ASes present in the Internet Routing Table:    4529
    APNIC Prefixes per ASN:                                       19.58
APNIC Region origin ASes announcing only one prefix:               1242
APNIC Region transit ASes present in the Internet Routing Table:    709
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         18
Number of APNIC region 32-bit ASNs visible in the Routing Table:     70
Number of APNIC addresses announced to Internet:              623788832
    Equivalent to 37 /8s, 46 /16s and 67 /24s
    Percentage of available APNIC address space announced:         79.1

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079, 55296-56319,
                       58368-59391, 131072-132095, 132096-133119
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:                    142332
    Total ARIN prefixes after maximum aggregation:                73328
    ARIN Deaggregation factor:                                     1.94
Prefixes being announced from the ARIN address blocks:           114147
    Unique aggregates announced from the ARIN address blocks:     47051
ARIN Region origin ASes present in the Internet Routing Table:    14570
    ARIN Prefixes per ASN:                                         7.83
ARIN Region origin ASes announcing only one prefix:                5592
ARIN Region transit ASes present in the Internet Routing Table:    1541
Average ARIN Region AS path length visible:                         4.0
    Max ARIN Region AS path length visible:                          34
Number of ARIN region 32-bit ASNs visible in the Routing Table:      12
Number of ARIN addresses announced to Internet:               803404032
    Equivalent to 47 /8s, 226 /16s and 249 /24s
    Percentage of available ARIN address space announced:          63.8

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
                       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:                     87382
    Total RIPE prefixes after maximum aggregation:                49660
    RIPE Deaggregation factor:                                     1.76
Prefixes being announced from the RIPE address blocks:            80613
    Unique aggregates announced from the RIPE address blocks:     53297
RIPE Region origin ASes present in the Internet Routing Table:    15880
    RIPE Prefixes per ASN:                                         5.08
RIPE Region origin ASes announcing only one prefix:                7911
RIPE Region transit ASes present in the Internet Routing Table:    2513
Average RIPE Region AS path length visible:                         4.6
    Max RIPE Region AS path length visible:                          33
Number of RIPE region 32-bit ASNs visible in the Routing Table:     947
Number of RIPE addresses announced to Internet:               487087104
    Equivalent to 29 /8s, 8 /16s and 92 /24s
    Percentage of available RIPE address space announced:          78.5

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:                   34092
    Total LACNIC prefixes after maximum aggregation:               7643
    LACNIC Deaggregation factor:                                   4.46
Prefixes being announced from the LACNIC address blocks:          33264
    Unique aggregates announced from the LACNIC address blocks:   17324
LACNIC Region origin ASes present in the Internet Routing Table:   1499
    LACNIC Prefixes per ASN:                                      22.19
LACNIC Region origin ASes announcing only one prefix:               442
LACNIC Region transit ASes present in the Internet Routing Table:   275
Average LACNIC Region AS path length visible:                       4.5
    Max LACNIC Region AS path length visible:                        19
Number of LACNIC region 32-bit ASNs visible in the Routing Table:   286
Number of LACNIC addresses announced to Internet:              87493120
    Equivalent to 5 /8s, 55 /16s and 10 /24s
    Percentage of available LACNIC address space announced:        57.9

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:                   8326
    Total AfriNIC prefixes after maximum aggregation:              2031
    AfriNIC Deaggregation factor:                                  4.10
Prefixes being announced from the AfriNIC address blocks:          6466
    Unique aggregates announced from the AfriNIC address blocks:   2050
AfriNIC Region origin ASes present in the Internet Routing Table:   484
    AfriNIC Prefixes per ASN:                                     13.36
AfriNIC Region origin ASes announcing only one prefix:              155
AfriNIC Region transit ASes present in the Internet Routing Table:  103
Average AfriNIC Region AS path length visible:                      4.8
    Max AfriNIC Region AS path length visible:                       16
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:    4
Number of AfriNIC addresses announced to Internet:             26906880
    Equivalent to 1 /8s, 154 /16s and 145 /24s
    Percentage of available AfriNIC address space announced:       40.1

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     2485      11044         946   Korea Telecom (KIX)
17974     1802        516          31   PT TELEKOMUNIKASI INDONESIA
 7545     1569        301          85   TPG Internet Pty Ltd
 4755     1535        635         170   TATA Communications formerly 
 7552     1408       1064           7   Vietel Corporation
24560     1198        336         187   Bharti Airtel Ltd., Telemedia
 9829     1128        963          42   BSNL National Internet Backbo
 9583     1070         78         490   Sify Limited
 4808     1065       2098         306   CNCGROUP IP network: China169
17488      990        187         123   Hathway IP Over Cable Interne

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     3589       3817         228   bellsouth.net, inc. 
18566     1913        365         240   Covad Communications 
 1785     1817        681         124   PaeTec Communications, Inc.
 4323     1616       1086         401   Time Warner Telecom
 7029     1612        993         230   Windstream Communications Inc
20115     1591       1538         623   Charter Communications 
22773     1409       2903          93   Cox Communications, Inc.
19262     1405       4778         395   Verizon Global Networks 
 7018     1364       7053         893   AT&T WorldNet Services
 2386     1248        519         898   AT&T Data Communications Serv

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
34984      538        107         185   BILISIM TELEKOM
 6830      511       1788         316   UPC Distribution Services
 3292      470       2080         405   TDC Tele Danmark
20940      470        134         363   Akamai Technologies European 
 8866      454        133          26   Bulgarian Telecommunication C
12479      453        593           7   Uni2 Autonomous System
 3320      425       8151         371   Deutsche Telekom AG
29049      417         31          55   AzerSat LLC.
 8551      404        354          44   Bezeq International
 3301      397       1855         346   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     1574        290         165   TVCABLE BOGOTA 
 8151     1434       2755         355   UniNet S.A. de C.V. 
28573     1265        996          67   NET Servicos de Comunicao S.A
 7303     1069        578         177   Telecom Argentina Stet-France
 6503      742        450          76   AVANTEL, S.A. 
14420      705         56          85   CORPORACION NACIONAL DE TELEC
22047      578        322          17   VTR PUNTO NET S.A. 
 3816      530        232          96   Empresa Nacional de Telecomun
27947      516         53          54   Telconet S.A
 7738      515        986          31   Telecomunicacoes da Bahia 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
24863      806        147          43   LINKdotNET AS number
 8452      653        445          11   TEDATA
15475      512         74           8   Nile Online
36992      305        415          14   Etisalat MISR
 3741      265        937         226   The Internet Solution 
 6713      261        519          14   Itissalat Al-MAGHRIB
15706      236         32           6   Sudatel Internet Exchange Aut
33776      229         13           8   Starcomms Nigeria Limited
12258      193         28          64   Vodacom Internet Company 
24835      179         78          10   RAYA Telecom - Egypt

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     3589       3817         228   bellsouth.net, inc. 
23456     3044        732        1637   32-bit ASN transition
 4766     2485      11044         946   Korea Telecom (KIX)
18566     1913        365         240   Covad Communications 
 1785     1817        681         124   PaeTec Communications, Inc.
17974     1802        516          31   PT TELEKOMUNIKASI INDONESIA
 4323     1616       1086         401   Time Warner Telecom
 7029     1612        993         230   Windstream Communications Inc
20115     1591       1538         623   Charter Communications 
10620     1574        290         165   TVCABLE BOGOTA 

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

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

  ASN   No of nets  Net Savings Description
17974      1802        1771      PT TELEKOMUNIKASI INDONESIA
 1785      1817        1693      PaeTec Communications, Inc.
18566      1913        1673      Covad Communications 
 4766      2485        1539      Korea Telecom (KIX)
 7545      1569        1484      TPG Internet Pty Ltd
10620      1574        1409      TVCABLE BOGOTA 
23456      3044        1407      32-bit ASN transition
 7552      1408        1401      Vietel Corporation
 7029      1612        1382      Windstream Communications Inc
 4755      1535        1365      TATA Communications formerly 

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

List of Unregistered Origin ASNs (Global)
-----------------------------------------

Bad AS  Designation  Network              Transit AS  Description
15132   UNALLOCATED  12.9.150.0/24         7018       AT&T WorldNet Servic
32567   UNALLOCATED  12.14.170.0/24        4323       Time Warner Telecom
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
13317   UNALLOCATED  12.44.10.0/24         7018       AT&T WorldNet Servic
23502   UNALLOCATED  12.44.44.0/24         7018       AT&T WorldNet Servic

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

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

Network            Origin AS  Description
24.225.128.0/18      36377     Comcast Telecommunications, I
24.225.192.0/23      36377     Comcast Telecommunications, I
24.225.192.0/18      36377     Comcast Telecommunications, I
24.225.224.0/21      36377     Comcast Telecommunications, I
24.225.237.0/24      36377     Comcast Telecommunications, I
24.225.248.0/21      36377     Comcast Telecommunications, I
41.222.79.0/24       36938     >>UNKNOWN<<
41.223.92.0/22       36936     >>UNKNOWN<<
62.61.220.0/24       24974     Tachyon Europe BV - Wireless 
62.61.221.0/24       24974     Tachyon Europe BV - Wireless 

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        /8:20       /9:12      /10:27      /11:81      /12:233     
/13:465     /14:800     /15:1414    /16:12057   /17:5905    /18:9924    
/19:19543   /20:26516   /21:26492   /22:35349   /23:34180   /24:191159  
/25:1096    /26:1298    /27:735     /28:206     /29:4       /30:0       
/31:0       /32:5       

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

  ASN   No of nets  Total ann.   Description
 6389     2220          3589      bellsouth.net, inc. 
18566     1869          1913      Covad Communications 
23456     1488          3044      32-bit ASN transition
10620     1469          1574      TVCABLE BOGOTA 
 7029     1308          1612      Windstream Communications Inc
11492     1100          1146      Cable One 
 7011     1056          1158      Citizens Utilities 
 1785     1052          1817      PaeTec Communications, Inc.
22773      905          1409      Cox Communications, Inc.
30036      896           918      Mediacom Communications Corp 

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

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

   1:354       2:46        4:15        5:1         6:3         8:342    
  12:1960     13:1        14:508      15:15       16:3        17:5      
  20:10       23:19       24:1686     27:872      31:513      32:64     
  33:4        34:2        36:4        38:729      40:108      41:2486   
  42:43       44:3        46:1070     47:3        49:219      50:393    
  52:13       54:2        55:6        56:2        57:35       58:869    
  59:500      60:379      61:1186     62:1065     63:1932     64:4005   
  65:2300     66:3918     67:1914     68:1109     69:3085     70:779    
  71:373      72:1868     74:2432     75:329      76:342      77:863    
  78:708      79:470      80:1132     81:828      82:487      83:465    
  84:685      85:1076     86:523      87:836      88:335      89:1533   
  90:224      91:4035     92:526      93:1118     94:1332     95:867    
  96:418      97:266      98:919      99:37      101:79      103:188    
 106:79      107:31      108:73      109:1017    110:619     111:731    
 112:308     113:407     114:560     115:694     116:992     117:679    
 118:870     119:1184    120:315     121:689     122:1611    123:980    
 124:1372    125:1326    128:246     129:174     130:171     131:578    
 132:116     133:21      134:213     135:52      136:210     137:140    
 138:296     139:116     140:488     141:273     142:380     143:419    
 144:489     145:58      146:459     147:215     148:695     149:252    
 150:163     151:190     152:440     153:182     154:5       155:400    
 156:199     157:331     158:138     159:458     160:317     161:208    
 162:309     163:164     164:515     165:366     166:533     167:432    
 168:748     169:153     170:847     171:81      172:1       173:1645   
 174:623     175:393     176:163     177:209     178:1005    180:927    
 181:26      182:512     183:241     184:365     185:1       186:1363   
 187:737     188:908     189:926     190:5094    192:5915    193:4974   
 194:3510    195:3052    196:1207    197:121     198:3591    199:4026   
 200:5537    201:1481    202:8428    203:8479    204:4261    205:2313   
 206:2677    207:2791    208:4015    209:3413    210:2687    211:1459   
 212:2085    213:1758    214:776     215:70      216:4887    217:1616   
 218:555     219:354     220:1229    221:513     222:355     223:234    


End of report


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