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Weekly Routing Table Report
From: Routing Analysis Role Account <cscora () apnic net>
Date: Sat, 6 Aug 2011 05:06:24 +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 06 Aug, 2011

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

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

BGP routing table entries examined:                              366101
    Prefixes after maximum aggregation:                          165963
    Deaggregation factor:                                          2.21
    Unique aggregates announced to Internet:                     181822
Total ASes present in the Internet Routing Table:                 38388
    Prefixes per ASN:                                              9.54
Origin-only ASes present in the Internet Routing Table:           31868
Origin ASes announcing only one prefix:                           15337
Transit ASes present in the Internet Routing Table:                5220
Transit-only ASes present in the Internet Routing Table:            141
Average AS path length visible in the Internet Routing Table:       4.4
    Max AS path length visible:                                      34
    Max AS path prepend of ASN (22394)                               31
Prefixes from unregistered ASNs in the Routing Table:              1040
    Unregistered ASNs in the Routing Table:                         593
Number of 32-bit ASNs allocated by the RIRs:                       1620
Number of 32-bit ASNs visible in the Routing Table:                1300
Prefixes from 32-bit ASNs in the Routing Table:                    3022
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            120
Number of addresses announced to Internet:                   2489833856
    Equivalent to 148 /8s, 103 /16s and 217 /24s
    Percentage of available address space announced:               67.2
    Percentage of allocated address space announced:               67.2
    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:      152918

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

Prefixes being announced by APNIC Region ASes:                    91398
    Total APNIC prefixes after maximum aggregation:               30293
    APNIC Deaggregation factor:                                    3.02
Prefixes being announced from the APNIC address blocks:           87871
    Unique aggregates announced from the APNIC address blocks:    37679
APNIC Region origin ASes present in the Internet Routing Table:    4531
    APNIC Prefixes per ASN:                                       19.39
APNIC Region origin ASes announcing only one prefix:               1245
APNIC Region transit ASes present in the Internet Routing Table:    715
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:     69
Number of APNIC addresses announced to Internet:              623300640
    Equivalent to 37 /8s, 38 /16s and 208 /24s
    Percentage of available APNIC address space announced:         79.0

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:                    141963
    Total ARIN prefixes after maximum aggregation:                73199
    ARIN Deaggregation factor:                                     1.94
Prefixes being announced from the ARIN address blocks:           113809
    Unique aggregates announced from the ARIN address blocks:     46854
ARIN Region origin ASes present in the Internet Routing Table:    14537
    ARIN Prefixes per ASN:                                         7.83
ARIN Region origin ASes announcing only one prefix:                5583
ARIN Region transit ASes present in the Internet Routing Table:    1538
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:               803328640
    Equivalent to 47 /8s, 225 /16s and 210 /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:                     87286
    Total RIPE prefixes after maximum aggregation:                49562
    RIPE Deaggregation factor:                                     1.76
Prefixes being announced from the RIPE address blocks:            80544
    Unique aggregates announced from the RIPE address blocks:     53233
RIPE Region origin ASes present in the Internet Routing Table:    15857
    RIPE Prefixes per ASN:                                         5.08
RIPE Region origin ASes announcing only one prefix:                7913
RIPE Region transit ASes present in the Internet Routing Table:    2508
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:     934
Number of RIPE addresses announced to Internet:               484720448
    Equivalent to 28 /8s, 228 /16s and 63 /24s
    Percentage of available RIPE address space announced:          78.1

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:                   33995
    Total LACNIC prefixes after maximum aggregation:               7596
    LACNIC Deaggregation factor:                                   4.48
Prefixes being announced from the LACNIC address blocks:          33197
    Unique aggregates announced from the LACNIC address blocks:   17229
LACNIC Region origin ASes present in the Internet Routing Table:   1490
    LACNIC Prefixes per ASN:                                      22.28
LACNIC Region origin ASes announcing only one prefix:               441
LACNIC Region transit ASes present in the Internet Routing Table:   280
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:   281
Number of LACNIC addresses announced to Internet:              87399680
    Equivalent to 5 /8s, 53 /16s and 157 /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:                   8269
    Total AfriNIC prefixes after maximum aggregation:              1986
    AfriNIC Deaggregation factor:                                  4.16
Prefixes being announced from the AfriNIC address blocks:          6558
    Unique aggregates announced from the AfriNIC address blocks:   2029
AfriNIC Region origin ASes present in the Internet Routing Table:   483
    AfriNIC Prefixes per ASN:                                     13.58
AfriNIC Region origin ASes announcing only one prefix:              155
AfriNIC Region transit ASes present in the Internet Routing Table:  105
Average AfriNIC Region AS path length visible:                      4.7
    Max AfriNIC Region AS path length visible:                       24
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:    4
Number of AfriNIC addresses announced to Internet:             26905344
    Equivalent to 1 /8s, 154 /16s and 139 /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     2491      11045         947   Korea Telecom (KIX)
17974     1784        516          31   PT TELEKOMUNIKASI INDONESIA
 7545     1560        301          85   TPG Internet Pty Ltd
 4755     1522        635         170   TATA Communications formerly 
24560     1196        336         187   Bharti Airtel Ltd., Telemedia
 9829     1114        929          42   BSNL National Internet Backbo
 9583     1070         78         491   Sify Limited
 4808     1056       2097         300   CNCGROUP IP network: China169
 7552      999       1062          11   Vietel Corporation
17488      980        188         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     3586       3817         231   bellsouth.net, inc. 
18566     1913        365         240   Covad Communications 
 1785     1814        681         121   PaeTec Communications, Inc.
 4323     1616       1082         400   Time Warner Telecom
 7029     1605        993         230   Windstream Communications Inc
20115     1591       1538         623   Charter Communications 
19262     1413       4792         392   Verizon Global Networks 
22773     1405       2900          90   Cox Communications, Inc.
 7018     1359       7052         888   AT&T WorldNet Services
 2386     1253        520         903   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      534        106         185   BILISIM TELEKOM
 6830      511       1788         316   UPC Distribution Services
 3292      470       2080         405   TDC Tele Danmark
20940      470        134         363   Akamai Technologies European 
12479      455        593           7   Uni2 Autonomous System
 8866      454        133          26   Bulgarian Telecommunication C
29049      434         32          52   AzerSat LLC.
 3320      424       8151         370   Deutsche Telekom AG
 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     1565        289         163   TVCABLE BOGOTA 
 8151     1424       2766         352   UniNet S.A. de C.V. 
28573     1278        996          67   NET Servicos de Comunicao S.A
 7303     1067        578         175   Telecom Argentina Stet-France
 6503      767        450          78   AVANTEL, S.A. 
14420      703         56          84   CORPORACION NACIONAL DE TELEC
22047      578        322          17   VTR PUNTO NET S.A. 
 3816      531        232          97   Empresa Nacional de Telecomun
 7738      516        986          31   Telecomunicacoes da Bahia S.A
11172      513         85          90   Servicios Alestra S.A de C.V 

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      803        147          42   LINKdotNET AS number
 8452      799        445          11   TEDATA
15475      512         74           8   Nile Online
36992      306        415          14   Etisalat MISR
 3741      265        937         226   The Internet Solution 
 6713      260        519          14   Itissalat Al-MAGHRIB
15706      230         32           6   Sudatel Internet Exchange Aut
33776      229         13           8   Starcomms Nigeria Limited
24835      176         78          10   RAYA Telecom - Egypt
29571      158         17          11   Ci Telecom Autonomous system 

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     3586       3817         231   bellsouth.net, inc. 
23456     3022        728        1620   32-bit ASN transition
 4766     2491      11045         947   Korea Telecom (KIX)
18566     1913        365         240   Covad Communications 
 1785     1814        681         121   PaeTec Communications, Inc.
17974     1784        516          31   PT TELEKOMUNIKASI INDONESIA
 4323     1616       1082         400   Time Warner Telecom
 7029     1605        993         230   Windstream Communications Inc
20115     1591       1538         623   Charter Communications 
10620     1565        289         163   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      1784        1753      PT TELEKOMUNIKASI INDONESIA
 1785      1814        1693      PaeTec Communications, Inc.
18566      1913        1673      Covad Communications 
 4766      2491        1544      Korea Telecom (KIX)
 7545      1560        1475      TPG Internet Pty Ltd
23456      3022        1402      32-bit ASN transition
10620      1565        1402      TVCABLE BOGOTA 
 7029      1605        1375      Windstream Communications Inc
 4755      1522        1352      TATA Communications formerly 
22773      1405        1315      Cox Communications, Inc.

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
31.192.96.0/21       44611     RIPE Network Coordination Cen
31.209.136.0/21      51896     Hestaleit ehf
41.222.79.0/24       36938     >>UNKNOWN<<
41.223.92.0/22       36936     >>UNKNOWN<<

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      /11:80      /12:233     
/13:465     /14:800     /15:1410    /16:12052   /17:5906    /18:9911    
/19:19523   /20:26343   /21:26393   /22:34986   /23:34062   /24:190548  
/25:1096    /26:1285    /27:731     /28:201     /29:9       /30:2       
/31:0       /32:6       

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

  ASN   No of nets  Total ann.   Description
 6389     2214          3586      bellsouth.net, inc. 
18566     1869          1913      Covad Communications 
23456     1485          3022      32-bit ASN transition
10620     1460          1565      TVCABLE BOGOTA 
 7029     1304          1605      Windstream Communications Inc
11492     1096          1142      Cable One 
 7011     1058          1160      Citizens Utilities 
 1785     1053          1814      PaeTec Communications, Inc.
 6478      932           960      AT&T Worldnet Services 
22773      904          1405      Cox Communications, Inc.

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

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

   1:348       2:46        4:15        5:1         6:3         8:339    
  12:1960     13:1        14:502      15:15       16:3        17:5      
  20:10       23:19       24:1677     27:863      31:517      32:64     
  33:4        34:2        36:4        38:727      40:106      41:2573   
  42:37       44:3        46:1071     47:3        49:202      50:384    
  52:13       54:2        55:4        56:2        57:35       58:865    
  59:492      60:378      61:1171     62:1056     63:1931     64:3996   
  65:2298     66:3908     67:1887     68:1099     69:3034     70:774    
  71:373      72:1866     74:2427     75:329      76:339      77:861    
  78:705      79:475      80:1124     81:839      82:504      83:465    
  84:683      85:1066     86:517      87:836      88:334      89:1537   
  90:224      91:4001     92:525      93:1121     94:1332     95:868    
  96:420      97:264      98:920      99:37      101:85      103:186    
 106:79      107:30      108:71      109:1040    110:613     111:722    
 112:307     113:406     114:559     115:676     116:993     117:668    
 118:864     119:1182    120:210     121:680     122:1613    123:991    
 124:1372    125:1289    128:246     129:171     130:171     131:575    
 132:102     133:21      134:214     135:52      136:215     137:138    
 138:296     139:115     140:483     141:270     142:380     143:422    
 144:488     145:57      146:455     147:213     148:682     149:252    
 150:156     151:190     152:347     153:182     154:5       155:400    
 156:199     157:355     158:139     159:457     160:319     161:206    
 162:310     163:163     164:513     165:366     166:532     167:432    
 168:738     169:153     170:841     171:81      172:1       173:1627   
 174:619     175:393     176:147     177:195     178:1014    180:917    
 181:26      182:508     183:237     184:361     185:1       186:1348   
 187:751     188:913     189:972     190:5086    192:5923    193:4980   
 194:3511    195:3063    196:1199    197:112     198:3590    199:4015   
 200:5529    201:1476    202:8426    203:8462    204:4253    205:2317   
 206:2670    207:2803    208:3994    209:3408    210:2710    211:1410   
 212:2088    213:1754    214:800     215:70      216:4896    217:1629   
 218:530     219:348     220:1203    221:485     222:360     223:239    


End of report


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