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Weekly Routing Table Report
From: Routing Analysis Role Account <cscora () apnic net>
Date: Sat, 3 Dec 2011 05:21:11 +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 03 Dec, 2011

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

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

BGP routing table entries examined:                              383257
    Prefixes after maximum aggregation:                          167342
    Deaggregation factor:                                          2.29
    Unique aggregates announced to Internet:                     188231
Total ASes present in the Internet Routing Table:                 39463
    Prefixes per ASN:                                              9.71
Origin-only ASes present in the Internet Routing Table:           32445
Origin ASes announcing only one prefix:                           15489
Transit ASes present in the Internet Routing Table:                5326
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:                                      33
    Max AS path prepend of ASN (48687)                               24
Prefixes from unregistered ASNs in the Routing Table:              1825
    Unregistered ASNs in the Routing Table:                         938
Number of 32-bit ASNs allocated by the RIRs:                       2031
Number of 32-bit ASNs visible in the Routing Table:                1692
Prefixes from 32-bit ASNs in the Routing Table:                    4000
Special use prefixes present in the Routing Table:                    2
Prefixes being announced from unallocated address space:             86
Number of addresses announced to Internet:                   2497290368
    Equivalent to 148 /8s, 217 /16s and 160 /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:      161883

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

Prefixes being announced by APNIC Region ASes:                    95145
    Total APNIC prefixes after maximum aggregation:               31175
    APNIC Deaggregation factor:                                    3.05
Prefixes being announced from the APNIC address blocks:           91627
    Unique aggregates announced from the APNIC address blocks:    38267
APNIC Region origin ASes present in the Internet Routing Table:    4600
    APNIC Prefixes per ASN:                                       19.92
APNIC Region origin ASes announcing only one prefix:               1249
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:    116
Number of APNIC addresses announced to Internet:              631205216
    Equivalent to 37 /8s, 159 /16s and 109 /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:                    146116
    Total ARIN prefixes after maximum aggregation:                74691
    ARIN Deaggregation factor:                                     1.96
Prefixes being announced from the ARIN address blocks:           118285
    Unique aggregates announced from the ARIN address blocks:     48671
ARIN Region origin ASes present in the Internet Routing Table:    14775
    ARIN Prefixes per ASN:                                         8.01
ARIN Region origin ASes announcing only one prefix:                5644
ARIN Region transit ASes present in the Internet Routing Table:    1574
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:               803370432
    Equivalent to 47 /8s, 226 /16s and 117 /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:                     92913
    Total RIPE prefixes after maximum aggregation:                51424
    RIPE Deaggregation factor:                                     1.81
Prefixes being announced from the RIPE address blocks:            85148
    Unique aggregates announced from the RIPE address blocks:     54728
RIPE Region origin ASes present in the Internet Routing Table:    16155
    RIPE Prefixes per ASN:                                         5.27
RIPE Region origin ASes announcing only one prefix:                7997
RIPE Region transit ASes present in the Internet Routing Table:    2543
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:    1186
Number of RIPE addresses announced to Internet:               492772928
    Equivalent to 29 /8s, 95 /16s and 30 /24s
    Percentage of available RIPE address space announced:          79.4

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:                   36582
    Total LACNIC prefixes after maximum aggregation:               7943
    LACNIC Deaggregation factor:                                   4.61
Prefixes being announced from the LACNIC address blocks:          36006
    Unique aggregates announced from the LACNIC address blocks:   18774
LACNIC Region origin ASes present in the Internet Routing Table:   1554
    LACNIC Prefixes per ASN:                                      23.17
LACNIC Region origin ASes announcing only one prefix:               442
LACNIC Region transit ASes present in the Internet Routing Table:   286
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:   374
Number of LACNIC addresses announced to Internet:              94397312
    Equivalent to 5 /8s, 160 /16s and 99 /24s
    Percentage of available LACNIC address space announced:        62.5

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:                   8338
    Total AfriNIC prefixes after maximum aggregation:              2041
    AfriNIC Deaggregation factor:                                  4.09
Prefixes being announced from the AfriNIC address blocks:          6390
    Unique aggregates announced from the AfriNIC address blocks:   2012
AfriNIC Region origin ASes present in the Internet Routing Table:   504
    AfriNIC Prefixes per ASN:                                     12.68
AfriNIC Region origin ASes announcing only one prefix:              157
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:             30034432
    Equivalent to 1 /8s, 202 /16s and 74 /24s
    Percentage of available AfriNIC address space announced:       44.8

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     2510      11105         973   Korea Telecom (KIX)
17974     1652        503          38   PT TELEKOMUNIKASI INDONESIA
 7545     1626        303          87   TPG Internet Pty Ltd
 4755     1511        381         157   TATA Communications formerly 
 7552     1386       1064           7   Vietel Corporation
 9829     1166        989          28   BSNL National Internet Backbo
 9583     1095         80         494   Sify Limited
 4808     1079       2038         305   CNCGROUP IP network: China169
24560      985        390         151   Bharti Airtel Ltd., Telemedia
18101      958        121         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     3483       3814         218   bellsouth.net, inc. 
 7029     2912       1016         199   Windstream Communications Inc
18566     2093        383         177   Covad Communications 
 1785     1852        680         120   PaeTec Communications, Inc.
 4323     1616       1073         386   Time Warner Telecom
20115     1603       1546         625   Charter Communications 
22773     1507       2909         104   Cox Communications, Inc.
30036     1435        257         675   Mediacom Communications Corp 
19262     1388       4683         401   Verizon Global Networks 
 7018     1314       7029         860   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     1552        480          15   Corbina telecom
 6830      645       1927         412   UPC Distribution Services
34984      616        116         195   BILISIM TELEKOM
20940      546        174         437   Akamai Technologies European 
 3320      517       8168         390   Deutsche Telekom AG
12479      494        601          13   Uni2 Autonomous System
 3292      480       2106         407   TDC Tele Danmark
 8866      462        133          26   Bulgarian Telecommunication C
 8551      451        366          45   Bezeq International
31148      413         22         115   FreeNet ISP

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     1702        315         180   TVCABLE BOGOTA 
28573     1537       1059          72   NET Servicos de Comunicao S.A
 8151     1334       2985         345   UniNet S.A. de C.V. 
 7303     1239        751         174   Telecom Argentina Stet-France
27947      606         72          89   Telconet S.A
22047      582        322          17   VTR PUNTO NET S.A. 
 7738      553       1050          31   Telecomunicacoes da Bahia S.A
 6503      552        434          68   AVANTEL, S.A. 
 3816      547        237          89   Empresa Nacional de Telecomun
11172      527         85          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      926        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
 6713      235        519          14   Itissalat Al-MAGHRIB
33776      231         13          10   Starcomms Nigeria Limited
29571      217         17          13   Ci Telecom Autonomous system 
12258      195         28          60   Vodacom Internet Company 
24835      190         80           8   RAYA Telecom - Egypt
16637      160        662          82   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     3483       3814         218   bellsouth.net, inc. 
 7029     2912       1016         199   Windstream Communications Inc
 4766     2510      11105         973   Korea Telecom (KIX)
18566     2093        383         177   Covad Communications 
 1785     1852        680         120   PaeTec Communications, Inc.
10620     1702        315         180   TVCABLE BOGOTA 
17974     1652        503          38   PT TELEKOMUNIKASI INDONESIA
 7545     1626        303          87   TPG Internet Pty Ltd
 4323     1616       1073         386   Time Warner Telecom
20115     1603       1546         625   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      2912        2713      Windstream Communications Inc
18566      2093        1916      Covad Communications 
 1785      1852        1732      PaeTec Communications, Inc.
17974      1652        1614      PT TELEKOMUNIKASI INDONESIA
 7545      1626        1539      TPG Internet Pty Ltd
 4766      2510        1537      Korea Telecom (KIX)
 8402      1552        1537      Corbina telecom
10620      1702        1522      TVCABLE BOGOTA 
28573      1537        1465      NET Servicos de Comunicao S.A
22773      1507        1403      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
14764   UNALLOCATED  12.108.237.0/24       7018       AT&T WorldNet Servic

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
41.222.79.0/24       37345     MEDALLION Communications
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. 
66.175.222.0/23      30058     FDC Servers.net, LLC 
66.180.239.0/24      35888     VIGNETTE CORPORATION 

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     
/13:463     /14:807     /15:1437    /16:12055   /17:6113    /18:10143   
/19:20053   /20:27738   /21:28008   /22:38142   /23:35692   /24:198843  
/25:1181    /26:1400    /27:785     /28:14      /29:3       /30:0       
/31:0       /32:5       

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

  ASN   No of nets  Total ann.   Description
 7029     2541          2912      Windstream Communications Inc
 6389     2126          3483      bellsouth.net, inc. 
18566     2042          2093      Covad Communications 
10620     1597          1702      TVCABLE BOGOTA 
 8402     1527          1552      Corbina telecom
30036     1395          1435      Mediacom Communications Corp 
11492     1119          1156      Cable One 
 1785     1058          1852      PaeTec Communications, Inc.
 7011     1048          1165      Citizens Utilities 
22773      967          1507      Cox Communications, Inc.

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

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

   1:442       2:489       4:15        5:1         6:3         8:359    
  12:1947     13:1        14:548      15:11       16:3        17:7      
  20:9        23:69       24:1694     27:1059     31:717      32:67     
  33:2        34:2        36:4        38:770      39:1        40:114    
  41:2860     42:66       43:1        44:3        46:1111     47:3      
  49:292      50:450      52:13       55:6        56:2        57:49     
  58:939      59:486      60:358      61:1178     62:913      63:1968   
  64:4049     65:2308     66:4368     67:1998     68:1174     69:3147   
  70:904      71:361      72:1772     74:2641     75:430      76:320    
  77:907      78:890      79:438      80:1142     81:834      82:523    
  83:527      84:471      85:1164     86:410      87:907      88:341    
  89:1587     90:246      91:4314     92:532      93:1423     94:1327   
  95:1096     96:397      97:285      98:764      99:37      101:121    
 103:523     106:7       107:103     108:88      109:1120    110:668    
 111:818     112:367     113:487     114:622     115:700     116:896    
 117:708     118:870     119:1229    120:349     121:667     122:1567   
 123:1019    124:1348    125:1349    128:278     129:185     130:183    
 131:632     132:155     133:21      134:222     135:54      136:212    
 137:146     138:287     139:123     140:491     141:253     142:379    
 143:405     144:498     145:62      146:475     147:221     148:643    
 149:270     150:166     151:192     152:449     153:171     154:7      
 155:381     156:209     157:359     158:156     159:523     160:333    
 161:214     162:364     163:176     164:521     165:385     166:542    
 167:453     168:823     169:146     170:822     171:87      172:4      
 173:1767    174:586     175:418     176:329     177:411     178:1150   
 180:1178    181:39      182:669     183:242     184:399     185:1      
 186:1478    187:784     188:947     189:1164    190:5286    192:5965   
 193:5118    194:3555    195:3119    196:1283    197:169     198:3624   
 199:4235    200:5523    201:1696    202:8474    203:8494    204:4322   
 205:2409    206:2668    207:2839    208:4011    209:3551    210:2730   
 211:1473    212:1991    213:1804    214:813     215:92      216:4933   
 217:1486    218:577     219:340     220:1252    221:525     222:325    
 223:229    

End of report


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