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Weekly Routing Table Report
From: Routing Analysis Role Account <cscora () apnic net>
Date: Sat, 27 Aug 2011 05:09:19 +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 27 Aug, 2011

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

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

BGP routing table entries examined:                              368931
    Prefixes after maximum aggregation:                          167074
    Deaggregation factor:                                          2.21
    Unique aggregates announced to Internet:                     182937
Total ASes present in the Internet Routing Table:                 38620
    Prefixes per ASN:                                              9.55
Origin-only ASes present in the Internet Routing Table:           32036
Origin ASes announcing only one prefix:                           15383
Transit ASes present in the Internet Routing Table:                5228
Transit-only ASes present in the Internet Routing Table:            145
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:              1164
    Unregistered ASNs in the Routing Table:                         661
Number of 32-bit ASNs allocated by the RIRs:                       1679
Number of 32-bit ASNs visible in the Routing Table:                1356
Prefixes from 32-bit ASNs in the Routing Table:                    3121
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            110
Number of addresses announced to Internet:                   2471627360
    Equivalent to 147 /8s, 82 /16s and 10 /24s
    Percentage of available address space announced:               66.7
    Percentage of allocated address space announced:               66.7
    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:      153708

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

Prefixes being announced by APNIC Region ASes:                    92897
    Total APNIC prefixes after maximum aggregation:               30576
    APNIC Deaggregation factor:                                    3.04
Prefixes being announced from the APNIC address blocks:           89398
    Unique aggregates announced from the APNIC address blocks:    37839
APNIC Region origin ASes present in the Internet Routing Table:    4549
    APNIC Prefixes per ASN:                                       19.65
APNIC Region origin ASes announcing only one prefix:               1254
APNIC Region transit ASes present in the Internet Routing Table:    714
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:     75
Number of APNIC addresses announced to Internet:              625593632
    Equivalent to 37 /8s, 73 /16s and 205 /24s
    Percentage of available APNIC address space announced:         79.3

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:                    142685
    Total ARIN prefixes after maximum aggregation:                73434
    ARIN Deaggregation factor:                                     1.94
Prefixes being announced from the ARIN address blocks:           114619
    Unique aggregates announced from the ARIN address blocks:     47132
ARIN Region origin ASes present in the Internet Routing Table:    14615
    ARIN Prefixes per ASN:                                         7.84
ARIN Region origin ASes announcing only one prefix:                5614
ARIN Region transit ASes present in the Internet Routing Table:    1545
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:               803940128
    Equivalent to 47 /8s, 235 /16s and 39 /24s
    Percentage of available ARIN address space announced:          63.9

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:                     87756
    Total RIPE prefixes after maximum aggregation:                49836
    RIPE Deaggregation factor:                                     1.76
Prefixes being announced from the RIPE address blocks:            80901
    Unique aggregates announced from the RIPE address blocks:     53610
RIPE Region origin ASes present in the Internet Routing Table:    15920
    RIPE Prefixes per ASN:                                         5.08
RIPE Region origin ASes announcing only one prefix:                7922
RIPE Region transit ASes present in the Internet Routing Table:    2510
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:     967
Number of RIPE addresses announced to Internet:               488260864
    Equivalent to 29 /8s, 26 /16s and 69 /24s
    Percentage of available RIPE address space announced:          78.7

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:                   34135
    Total LACNIC prefixes after maximum aggregation:               7718
    LACNIC Deaggregation factor:                                   4.42
Prefixes being announced from the LACNIC address blocks:          33388
    Unique aggregates announced from the LACNIC address blocks:   17451
LACNIC Region origin ASes present in the Internet Routing Table:   1507
    LACNIC Prefixes per ASN:                                      22.16
LACNIC Region origin ASes announcing only one prefix:               443
LACNIC Region transit ASes present in the Internet Routing Table:   278
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:   298
Number of LACNIC addresses announced to Internet:              87851136
    Equivalent to 5 /8s, 60 /16s and 128 /24s
    Percentage of available LACNIC address space announced:        58.2

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:                   8161
    Total AfriNIC prefixes after maximum aggregation:              2047
    AfriNIC Deaggregation factor:                                  3.99
Prefixes being announced from the AfriNIC address blocks:          6264
    Unique aggregates announced from the AfriNIC address blocks:   2070
AfriNIC Region origin ASes present in the Internet Routing Table:   479
    AfriNIC Prefixes per ASN:                                     13.08
AfriNIC Region origin ASes announcing only one prefix:              150
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:                       25
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:    4
Number of AfriNIC addresses announced to Internet:             26705664
    Equivalent to 1 /8s, 151 /16s and 127 /24s
    Percentage of available AfriNIC address space announced:       39.8

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     2506      11047         952   Korea Telecom (KIX)
17974     1995        516          31   PT TELEKOMUNIKASI INDONESIA
 7545     1575        301          84   TPG Internet Pty Ltd
 4755     1537        635         168   TATA Communications formerly 
 7552     1416       1064           7   Vietel Corporation
24560     1198        336         189   Bharti Airtel Ltd., Telemedia
 9829     1153        989          28   BSNL National Internet Backbo
 9583     1076         79         496   Sify Limited
 4808     1059       2094         305   CNCGROUP IP network: China169
17488     1020        192         147   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     3580       3817         226   bellsouth.net, inc. 
18566     1912        364         240   Covad Communications 
 1785     1821        680         122   PaeTec Communications, Inc.
 4323     1613       1085         395   Time Warner Telecom
20115     1588       1538         632   Charter Communications 
 7029     1580        995         230   Windstream Communications Inc
22773     1442       2903          97   Cox Communications, Inc.
19262     1405       4778         395   Verizon Global Networks 
 7018     1349       7051         881   AT&T WorldNet Services
 2386     1225        515         885   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      541        107         182   BILISIM TELEKOM
 6830      522       1810         321   UPC Distribution Services
20940      490        146         381   Akamai Technologies European 
 3292      469       2080         404   TDC Tele Danmark
 8866      458        133          26   Bulgarian Telecommunication C
12479      457        593           7   Uni2 Autonomous System
 3320      425       8151         371   Deutsche Telekom AG
29049      424         31          55   AzerSat LLC.
 8551      404        354          44   Bezeq International
 3301      399       1855         348   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     1622        297         155   TVCABLE BOGOTA 
 8151     1407       2792         350   UniNet S.A. de C.V. 
28573     1271        996          67   NET Servicos de Comunicao S.A
 7303     1059        578         173   Telecom Argentina Stet-France
14420      711         56          87   CORPORACION NACIONAL DE TELEC
 6503      591        450          68   AVANTEL, S.A. 
22047      578        322          17   VTR PUNTO NET S.A. 
27947      559         55          82   Telconet S.A
 7738      515        986          31   Telecomunicacoes da Bahia S.A
11172      509         85          89   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      808        145          59   LINKdotNET AS number
 8452      530        445          11   TEDATA
15475      512         74           8   Nile Online
36992      300        415          14   Etisalat MISR
 3741      265        937         226   The Internet Solution 
 6713      229        503          17   Itissalat Al-MAGHRIB
15706      219         32           6   Sudatel Internet Exchange Aut
33776      196         12          22   Starcomms Nigeria Limited
12258      194         28          61   Vodacom Internet Company 
24835      176         70          11   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     3580       3817         226   bellsouth.net, inc. 
23456     3121        743        1687   32-bit ASN transition
 4766     2506      11047         952   Korea Telecom (KIX)
17974     1995        516          31   PT TELEKOMUNIKASI INDONESIA
18566     1912        364         240   Covad Communications 
 1785     1821        680         122   PaeTec Communications, Inc.
10620     1622        297         155   TVCABLE BOGOTA 
 4323     1613       1085         395   Time Warner Telecom
20115     1588       1538         632   Charter Communications 
 7029     1580        995         230   Windstream Communications Inc

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      1995        1964      PT TELEKOMUNIKASI INDONESIA
 1785      1821        1699      PaeTec Communications, Inc.
18566      1912        1672      Covad Communications 
 4766      2506        1554      Korea Telecom (KIX)
 7545      1575        1491      TPG Internet Pty Ltd
10620      1622        1467      TVCABLE BOGOTA 
23456      3121        1434      32-bit ASN transition
 7552      1416        1409      Vietel Corporation
 4755      1537        1369      TATA Communications formerly 
 7029      1580        1350      Windstream 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
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        /8:19       /9:12      /10:27      /11:81      /12:233     
/13:461     /14:796     /15:1413    /16:11945   /17:5943    /18:9960    
/19:19583   /20:26662   /21:26700   /22:35757   /23:34404   /24:191586  
/25:1115    /26:1320    /27:746     /28:159     /29:4       /30:0       
/31:0       /32:5       

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

  ASN   No of nets  Total ann.   Description
 6389     2213          3580      bellsouth.net, inc. 
18566     1868          1912      Covad Communications 
23456     1532          3121      32-bit ASN transition
10620     1517          1622      TVCABLE BOGOTA 
 7029     1280          1580      Windstream Communications Inc
11492     1108          1154      Cable One 
 7011     1061          1186      Citizens Utilities 
 1785     1053          1821      PaeTec Communications, Inc.
22773      936          1442      Cox Communications, Inc.
30036      925           953      Mediacom Communications Corp 

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

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

   1:361       2:43        4:15        5:1         6:3         8:344    
  12:1959     13:1        14:521      15:13       16:3        17:5      
  20:10       23:31       24:1677     27:913      31:514      32:64     
  33:4        34:2        36:4        38:734      40:107      41:2367   
  42:50       44:3        46:1076     47:3        49:217      50:416    
  52:13       54:2        55:6        56:2        57:35       58:860    
  59:500      60:376      61:1170     62:1088     63:1931     64:4004   
  65:2306     66:3920     67:1924     68:1101     69:3125     70:779    
  71:373      72:1842     74:2439     75:330      76:339      77:865    
  78:708      79:472      80:1118     81:828      82:495      83:473    
  84:683      85:1078     86:494      87:849      88:337      89:1537   
  90:224      91:4054     92:525      93:1136     94:1347     95:878    
  96:418      97:267      98:927      99:37      101:79      103:240    
 106:79      107:37      108:75      109:1013    110:636     111:734    
 112:315     113:415     114:555     115:702     116:995     117:682    
 118:882     119:1197    120:331     121:688     122:1616    123:988    
 124:1319    125:1328    128:245     129:178     130:166     131:579    
 132:119     133:21      134:213     135:54      136:213     137:136    
 138:293     139:116     140:488     141:281     142:387     143:420    
 144:487     145:61      146:460     147:245     148:638     149:251    
 150:155     151:190     152:441     153:179     154:5       155:401    
 156:202     157:351     158:140     159:457     160:318     161:207    
 162:334     163:166     164:514     165:366     166:537     167:434    
 168:745     169:151     170:848     171:82      172:1       173:1647   
 174:628     175:395     176:155     177:241     178:1009    180:1004   
 181:25      182:600     183:242     184:339     185:1       186:1386   
 187:690     188:936     189:873     190:5123    192:5921    193:4985   
 194:3506    195:3045    196:1236    197:143     198:3580    199:4070   
 200:5502    201:1515    202:8402    203:8471    204:4254    205:2333   
 206:2668    207:2825    208:4008    209:3434    210:2705    211:1456   
 212:2083    213:1761    214:778     215:76      216:4831    217:1610   
 218:551     219:352     220:1220    221:514     222:352     223:248    


End of report


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