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Weekly Routing Table Report
From: Routing Analysis Role Account <cscora () apnic net>
Date: Sat, 10 Dec 2011 05:22:50 +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 10 Dec, 2011

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

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

BGP routing table entries examined:                              384553
    Prefixes after maximum aggregation:                          167591
    Deaggregation factor:                                          2.29
    Unique aggregates announced to Internet:                     188778
Total ASes present in the Internet Routing Table:                 39528
    Prefixes per ASN:                                              9.73
Origin-only ASes present in the Internet Routing Table:           32469
Origin ASes announcing only one prefix:                           15507
Transit ASes present in the Internet Routing Table:                5346
Transit-only ASes present in the Internet Routing Table:            144
Average AS path length visible in the Internet Routing Table:       4.3
    Max AS path length visible:                                      33
    Max AS path prepend of ASN (48687)                               24
Prefixes from unregistered ASNs in the Routing Table:              1864
    Unregistered ASNs in the Routing Table:                         973
Number of 32-bit ASNs allocated by the RIRs:                       2059
Number of 32-bit ASNs visible in the Routing Table:                1713
Prefixes from 32-bit ASNs in the Routing Table:                    4069
Special use prefixes present in the Routing Table:                    2
Prefixes being announced from unallocated address space:             82
Number of addresses announced to Internet:                   2499466496
    Equivalent to 148 /8s, 250 /16s and 213 /24s
    Percentage of available address space announced:               67.4
    Percentage of allocated address space announced:               67.4
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               91.7
Total number of prefixes smaller than registry allocations:      162332

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

Prefixes being announced by APNIC Region ASes:                    95338
    Total APNIC prefixes after maximum aggregation:               31228
    APNIC Deaggregation factor:                                    3.05
Prefixes being announced from the APNIC address blocks:           91808
    Unique aggregates announced from the APNIC address blocks:    38427
APNIC Region origin ASes present in the Internet Routing Table:    4601
    APNIC Prefixes per ASN:                                       19.95
APNIC Region origin ASes announcing only one prefix:               1248
APNIC Region transit ASes present in the Internet Routing Table:    727
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         18
Number of APNIC region 32-bit ASNs visible in the Routing Table:    119
Number of APNIC addresses announced to Internet:              631071072
    Equivalent to 37 /8s, 157 /16s and 97 /24s
    Percentage of available APNIC address space announced:         80.0

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:                    146344
    Total ARIN prefixes after maximum aggregation:                74781
    ARIN Deaggregation factor:                                     1.96
Prefixes being announced from the ARIN address blocks:           118441
    Unique aggregates announced from the ARIN address blocks:     48663
ARIN Region origin ASes present in the Internet Routing Table:    14799
    ARIN Prefixes per ASN:                                         8.00
ARIN Region origin ASes announcing only one prefix:                5662
ARIN Region transit ASes present in the Internet Routing Table:    1579
Average ARIN Region AS path length visible:                         4.0
    Max ARIN Region AS path length visible:                          25
Number of ARIN region 32-bit ASNs visible in the Routing Table:      12
Number of ARIN addresses announced to Internet:               803365568
    Equivalent to 47 /8s, 226 /16s and 98 /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:                     93411
    Total RIPE prefixes after maximum aggregation:                51508
    RIPE Deaggregation factor:                                     1.81
Prefixes being announced from the RIPE address blocks:            85799
    Unique aggregates announced from the RIPE address blocks:     55001
RIPE Region origin ASes present in the Internet Routing Table:    16170
    RIPE Prefixes per ASN:                                         5.31
RIPE Region origin ASes announcing only one prefix:                7996
RIPE Region transit ASes present in the Internet Routing Table:    2557
Average RIPE Region AS path length visible:                         4.7
    Max RIPE Region AS path length visible:                          33
Number of RIPE region 32-bit ASNs visible in the Routing Table:    1199
Number of RIPE addresses announced to Internet:               493969856
    Equivalent to 29 /8s, 113 /16s and 97 /24s
    Percentage of available RIPE address space announced:          79.6

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:                   36815
    Total LACNIC prefixes after maximum aggregation:               7940
    LACNIC Deaggregation factor:                                   4.64
Prefixes being announced from the LACNIC address blocks:          36277
    Unique aggregates announced from the LACNIC address blocks:   18889
LACNIC Region origin ASes present in the Internet Routing Table:   1556
    LACNIC Prefixes per ASN:                                      23.31
LACNIC Region origin ASes announcing only one prefix:               441
LACNIC Region transit ASes present in the Internet Routing Table:   289
Average LACNIC Region AS path length visible:                       4.5
    Max LACNIC Region AS path length visible:                        18
Number of LACNIC region 32-bit ASNs visible in the Routing Table:   379
Number of LACNIC addresses announced to Internet:              94673024
    Equivalent to 5 /8s, 164 /16s and 152 /24s
    Percentage of available LACNIC address space announced:        62.7

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:                   8406
    Total AfriNIC prefixes after maximum aggregation:              2062
    AfriNIC Deaggregation factor:                                  4.08
Prefixes being announced from the AfriNIC address blocks:          6460
    Unique aggregates announced from the AfriNIC address blocks:   2059
AfriNIC Region origin ASes present in the Internet Routing Table:   503
    AfriNIC Prefixes per ASN:                                     12.84
AfriNIC Region origin ASes announcing only one prefix:              160
AfriNIC Region transit ASes present in the Internet Routing Table:  110
Average AfriNIC Region AS path length visible:                      4.5
    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:             30395392
    Equivalent to 1 /8s, 207 /16s and 204 /24s
    Percentage of available AfriNIC address space announced:       45.3

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     2509      11104         970   Korea Telecom (KIX)
17974     1694        503          38   PT TELEKOMUNIKASI INDONESIA
 7545     1631        303          86   TPG Internet Pty Ltd
 4755     1511        385         158   TATA Communications formerly 
 7552     1392       1064           7   Vietel Corporation
 9829     1170        989          28   BSNL National Internet Backbo
 9583     1099         81         496   Sify Limited
 4808     1076       2034         303   CNCGROUP IP network: China169
24560      982        381         162   Bharti Airtel Ltd., Telemedia
18101      960        122         155   Reliance Infocom Ltd Internet

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     3481       3814         218   bellsouth.net, inc. 
 7029     2916       1017         200   Windstream Communications Inc
18566     2093        383         177   Covad Communications 
 1785     1855        680         121   PaeTec Communications, Inc.
 4323     1617       1073         385   Time Warner Telecom
20115     1602       1548         628   Charter Communications 
22773     1505       2909         104   Cox Communications, Inc.
30036     1443        258         675   Mediacom Communications Corp 
19262     1388       4683         401   Verizon Global Networks 
 7018     1309       7029         858   AT&T WorldNet Services

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
 8402     1581        480          15   Corbina telecom
 6830      644       1927         412   UPC Distribution Services
34984      624        132         201   BILISIM TELEKOM
 2118      550         99          14   EUnet/RELCOM Autonomous Syste
20940      544        174         434   Akamai Technologies European 
 3320      528       8161         394   Deutsche Telekom AG
12479      493        601          12   Uni2 Autonomous System
 3292      480       2106         407   TDC Tele Danmark
 8866      462        133          26   Bulgarian Telecommunication C
 8551      423        366          45   Bezeq International

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     1720        318         155   TVCABLE BOGOTA 
28573     1549       1059          72   NET Servicos de Comunicao S.A
 8151     1459       2985         349   UniNet S.A. de C.V. 
 7303     1239        751         174   Telecom Argentina Stet-France
27947      617         72          91   Telconet S.A
22047      582        322          17   VTR PUNTO NET S.A. 
 6503      554        434          68   AVANTEL, S.A. 
 7738      553       1050          31   Telecomunicacoes da Bahia S.A
 3816      547        237          89   Empresa Nacional de Telecomun
11172      528         86          95   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
 8452      963        958          13   TEDATA
24863      785        146          35   LINKdotNET AS number
 3741      281        939         230   The Internet Solution 
15706      242         32           6   Sudatel Internet Exchange Aut
33776      240         13           8   Starcomms Nigeria Limited
 6713      235        519          14   Itissalat Al-MAGHRIB
29571      217         17          13   Ci Telecom Autonomous system 
12258      195         28          60   Vodacom Internet Company 
24835      193         80           8   RAYA Telecom - Egypt
16637      164        664          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     3481       3814         218   bellsouth.net, inc. 
 7029     2916       1017         200   Windstream Communications Inc
 4766     2509      11104         970   Korea Telecom (KIX)
18566     2093        383         177   Covad Communications 
 1785     1855        680         121   PaeTec Communications, Inc.
10620     1720        318         155   TVCABLE BOGOTA 
17974     1694        503          38   PT TELEKOMUNIKASI INDONESIA
 7545     1631        303          86   TPG Internet Pty Ltd
 4323     1617       1073         385   Time Warner Telecom
20115     1602       1548         628   Charter Communications 

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

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

  ASN   No of nets  Net Savings Description
 7029      2916        2716      Windstream Communications Inc
18566      2093        1916      Covad Communications 
 1785      1855        1734      PaeTec Communications, Inc.
17974      1694        1656      PT TELEKOMUNIKASI INDONESIA
 8402      1581        1566      Corbina telecom
10620      1720        1565      TVCABLE BOGOTA 
 7545      1631        1545      TPG Internet Pty Ltd
 4766      2509        1539      Korea Telecom (KIX)
28573      1549        1477      NET Servicos de Comunicao S.A
22773      1505        1401      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
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
17300   UNALLOCATED  12.45.103.0/24        7018       AT&T WorldNet Servic
17300   UNALLOCATED  12.45.110.0/24         701       UUNET Technologies, 
16476   UNALLOCATED  12.46.27.0/24         7018       AT&T WorldNet Servic
32873   UNALLOCATED  12.46.100.0/23       10912       InterNAP Network Ser

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

Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------

Prefix             Origin AS  Description
128.0.0.0/21         12654     RIPE NCC RIS Project
128.0.24.0/24        12654     RIPE NCC RIS Project

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

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

Network            Origin AS  Description
37.0.24.0/21         50794     AS Levira
37.1.88.0/21         50763     MCKAYCOM LTD
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 
64.21.192.0/20       11610     Internet Nebraska Corporation
64.21.212.0/22       11610     Internet Nebraska Corporation
64.21.216.0/21       11610     Internet Nebraska Corporation
66.171.32.0/20         705     UUNET Technologies, Inc. 

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      /12:236     
/13:465     /14:812     /15:1442    /16:12042   /17:6104    /18:10146   
/19:20068   /20:27797   /21:28040   /22:38213   /23:35782   /24:199713  
/25:1176    /26:1417    /27:783     /28:170     /29:3       /30:0       
/31:0       /32:5       

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

  ASN   No of nets  Total ann.   Description
 7029     2545          2916      Windstream Communications Inc
 6389     2124          3481      bellsouth.net, inc. 
18566     2042          2093      Covad Communications 
10620     1615          1720      TVCABLE BOGOTA 
 8402     1556          1581      Corbina telecom
30036     1403          1443      Mediacom Communications Corp 
11492     1116          1153      Cable One 
 1785     1060          1855      PaeTec Communications, Inc.
 7011     1050          1166      Citizens Utilities 
22773      966          1505      Cox Communications, Inc.

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

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

   1:445       2:483       4:15        5:1         6:3         8:360    
  12:1944     13:1        14:557      15:11       16:3        17:7      
  20:9        23:72       24:1699     27:1113     31:721      32:67     
  33:2        34:2        36:4        38:771      39:1        40:114    
  41:2895     42:69       43:1        44:3        46:1127     47:3      
  49:228      50:459      52:13       55:5        56:2        57:45     
  58:945      59:487      60:342      61:1176     62:912      63:1970   
  64:4079     65:2307     66:4364     67:2004     68:1178     69:3141   
  70:916      71:362      72:1776     74:2639     75:431      76:319    
  77:937      78:886      79:439      80:1142     81:847      82:521    
  83:529      84:470      85:1169     86:409      87:910      88:353    
  89:1589     90:247      91:4340     92:539      93:1408     94:1324   
  95:1131     96:395      97:285      98:784      99:38      101:122    
 103:538     106:8       107:106     108:95      109:1096    110:670    
 111:823     112:375     113:485     114:617     115:703     116:876    
 117:712     118:878     119:1240    120:343     121:681     122:1557   
 123:1022    124:1365    125:1341    128:275     129:189     130:181    
 131:579     132:158     133:21      134:221     135:55      136:212    
 137:147     138:286     139:123     140:491     141:254     142:382    
 143:404     144:505     145:66      146:474     147:222     148:638    
 149:272     150:165     151:192     152:445     153:171     154:7      
 155:380     156:209     157:358     158:156     159:503     160:334    
 161:221     162:363     163:183     164:523     165:387     166:542    
 167:459     168:818     169:146     170:823     171:90      172:4      
 173:1786    174:591     175:415     176:339     177:429     178:1138   
 180:1173    181:38      182:675     183:253     184:399     185:1      
 186:1480    187:785     188:939     189:1173    190:5288    192:5969   
 193:5121    194:3797    195:3366    196:1273    197:172     198:3618   
 199:4216    200:5543    201:1702    202:8486    203:8523    204:4328   
 205:2404    206:2670    207:2842    208:4015    209:3558    210:2755   
 211:1469    212:1982    213:1795    214:822     215:92      216:4934   
 217:1488    218:578     219:344     220:1250    221:529     222:326    
 223:262    

End of report


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