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Weekly Routing Table Report
From: Routing Analysis Role Account <cscora () apnic net>
Date: Sat, 24 Dec 2011 05:23:39 +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 24 Dec, 2011

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

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

BGP routing table entries examined:                              387081
    Prefixes after maximum aggregation:                          168128
    Deaggregation factor:                                          2.30
    Unique aggregates announced to Internet:                     189666
Total ASes present in the Internet Routing Table:                 39672
    Prefixes per ASN:                                              9.76
Origin-only ASes present in the Internet Routing Table:           32553
Origin ASes announcing only one prefix:                           15517
Transit ASes present in the Internet Routing Table:                5339
Transit-only ASes present in the Internet Routing Table:            141
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:              1962
    Unregistered ASNs in the Routing Table:                        1019
Number of 32-bit ASNs allocated by the RIRs:                       2123
Number of 32-bit ASNs visible in the Routing Table:                1780
Prefixes from 32-bit ASNs in the Routing Table:                    4232
Special use prefixes present in the Routing Table:                    2
Prefixes being announced from unallocated address space:            127
Number of addresses announced to Internet:                   2503477552
    Equivalent to 149 /8s, 56 /16s and 9 /24s
    Percentage of available address space announced:               67.5
    Percentage of allocated address space announced:               67.5
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               91.8
Total number of prefixes smaller than registry allocations:      163949

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

Prefixes being announced by APNIC Region ASes:                    95769
    Total APNIC prefixes after maximum aggregation:               31336
    APNIC Deaggregation factor:                                    3.06
Prefixes being announced from the APNIC address blocks:           92133
    Unique aggregates announced from the APNIC address blocks:    38669
APNIC Region origin ASes present in the Internet Routing Table:    4619
    APNIC Prefixes per ASN:                                       19.95
APNIC Region origin ASes announcing only one prefix:               1249
APNIC Region transit ASes present in the Internet Routing Table:    729
Average APNIC Region AS path length visible:                        4.3
    Max APNIC Region AS path length visible:                         18
Number of APNIC region 32-bit ASNs visible in the Routing Table:    125
Number of APNIC addresses announced to Internet:              632233600
    Equivalent to 37 /8s, 175 /16s and 30 /24s
    Percentage of available APNIC address space announced:         80.2

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:                    146693
    Total ARIN prefixes after maximum aggregation:                74924
    ARIN Deaggregation factor:                                     1.96
Prefixes being announced from the ARIN address blocks:           118806
    Unique aggregates announced from the ARIN address blocks:     48828
ARIN Region origin ASes present in the Internet Routing Table:    14819
    ARIN Prefixes per ASN:                                         8.02
ARIN Region origin ASes announcing only one prefix:                5672
ARIN Region transit ASes present in the Internet Routing Table:    1566
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:      14
Number of ARIN addresses announced to Internet:               804598720
    Equivalent to 47 /8s, 245 /16s and 51 /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:                     94898
    Total RIPE prefixes after maximum aggregation:                51720
    RIPE Deaggregation factor:                                     1.83
Prefixes being announced from the RIPE address blocks:            86897
    Unique aggregates announced from the RIPE address blocks:     55306
RIPE Region origin ASes present in the Internet Routing Table:    16209
    RIPE Prefixes per ASN:                                         5.36
RIPE Region origin ASes announcing only one prefix:                7986
RIPE Region transit ASes present in the Internet Routing Table:    2575
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:    1239
Number of RIPE addresses announced to Internet:               494850504
    Equivalent to 29 /8s, 126 /16s and 209 /24s
    Percentage of available RIPE address space announced:          79.7

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:                   36823
    Total LACNIC prefixes after maximum aggregation:               8014
    LACNIC Deaggregation factor:                                   4.59
Prefixes being announced from the LACNIC address blocks:          36312
    Unique aggregates announced from the LACNIC address blocks:   18904
LACNIC Region origin ASes present in the Internet Routing Table:   1559
    LACNIC Prefixes per ASN:                                      23.29
LACNIC Region origin ASes announcing only one prefix:               451
LACNIC Region transit ASes present in the Internet Routing Table:   287
Average LACNIC Region AS path length visible:                       4.5
    Max LACNIC Region AS path length visible:                        27
Number of LACNIC region 32-bit ASNs visible in the Routing Table:   398
Number of LACNIC addresses announced to Internet:              94882952
    Equivalent to 5 /8s, 167 /16s and 204 /24s
    Percentage of available LACNIC address space announced:        62.8

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:                   8506
    Total AfriNIC prefixes after maximum aggregation:              2063
    AfriNIC Deaggregation factor:                                  4.12
Prefixes being announced from the AfriNIC address blocks:          6551
    Unique aggregates announced from the AfriNIC address blocks:   2036
AfriNIC Region origin ASes present in the Internet Routing Table:   503
    AfriNIC Prefixes per ASN:                                     13.02
AfriNIC Region origin ASes announcing only one prefix:              159
AfriNIC Region transit ASes present in the Internet Routing Table:  111
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:             30835968
    Equivalent to 1 /8s, 214 /16s and 133 /24s
    Percentage of available AfriNIC address space announced:       45.9

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     2488      11102         967   Korea Telecom (KIX)
17974     1716        503          38   PT TELEKOMUNIKASI INDONESIA
 7545     1629        303          86   TPG Internet Pty Ltd
 4755     1515        385         157   TATA Communications formerly 
 7552     1420       1064           7   Vietel Corporation
 9829     1168        989          28   BSNL National Internet Backbo
 9583     1101         81         494   Sify Limited
 4808     1076       2036         307   CNCGROUP IP network: China169
24560     1012        385         167   Bharti Airtel Ltd., Telemedia
18101      974        131         157   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     3473       3814         219   bellsouth.net, inc. 
 7029     2910       1017         200   Windstream Communications Inc
18566     2093        383         177   Covad Communications 
 1785     1860        680         122   PaeTec Communications, Inc.
 4323     1621       1065         385   Time Warner Telecom
20115     1612       1549         622   Charter Communications 
22773     1515       2909         107   Cox Communications, Inc.
30036     1466        260         686   Mediacom Communications Corp 
19262     1389       4683         401   Verizon Global Networks 
 7018     1302       7012         854   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     1617        480          15   Corbina telecom
15557     1092       2161          64   LDCOM NETWORKS
 2118      672         99          14   EUnet/RELCOM Autonomous Syste
 6830      648       1928         413   UPC Distribution Services
34984      628        132         197   BILISIM TELEKOM
20940      555        179         441   Akamai Technologies European 
12479      551        636          53   Uni2 Autonomous System
 3320      532       8162         398   Deutsche Telekom AG
 3292      480       2106         407   TDC Tele Danmark
 8866      464        134          27   Bulgarian Telecommunication C

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     1719        318         157   TVCABLE BOGOTA 
28573     1574       1064          75   NET Servicos de Comunicao S.A
 8151     1452       2960         356   UniNet S.A. de C.V. 
 7303     1249        752         174   Telecom Argentina Stet-France
27947      631         73          94   Telconet S.A
22047      582        322          17   VTR PUNTO NET S.A. 
 7738      551       1050          31   Telecomunicacoes da Bahia S.A
 3816      547        237          90   Empresa Nacional de Telecomun
 6503      539        434          67   AVANTEL, S.A. 
11172      530        102          97   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     1036        958          13   TEDATA
24863      790        146          36   LINKdotNET AS number
 3741      280        939         229   The Internet Solution 
 6713      243        647          17   Itissalat Al-MAGHRIB
15706      242         32           6   Sudatel Internet Exchange Aut
33776      240         13           8   Starcomms Nigeria Limited
29571      217         17          13   Ci Telecom Autonomous system 
12258      195         28          60   Vodacom Internet Company 
24835      188         80           8   RAYA Telecom - Egypt
16637      160        664          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     3473       3814         219   bellsouth.net, inc. 
 7029     2910       1017         200   Windstream Communications Inc
 4766     2488      11102         967   Korea Telecom (KIX)
18566     2093        383         177   Covad Communications 
 1785     1860        680         122   PaeTec Communications, Inc.
10620     1719        318         157   TVCABLE BOGOTA 
17974     1716        503          38   PT TELEKOMUNIKASI INDONESIA
 7545     1629        303          86   TPG Internet Pty Ltd
 4323     1621       1065         385   Time Warner Telecom
 8402     1617        480          15   Corbina telecom

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      2910        2710      Windstream Communications Inc
18566      2093        1916      Covad Communications 
 1785      1860        1738      PaeTec Communications, Inc.
17974      1716        1678      PT TELEKOMUNIKASI INDONESIA
 8402      1617        1602      Corbina telecom
10620      1719        1562      TVCABLE BOGOTA 
 7545      1629        1543      TPG Internet Pty Ltd
 4766      2488        1521      Korea Telecom (KIX)
28573      1574        1499      NET Servicos de Comunicao S.A
 7552      1420        1413      Vietel Corporation

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
14.192.0.0/22        45464     Room 201, TGU Bldg
14.192.4.0/22        45464     Room 201, TGU Bldg
14.192.8.0/22        45464     Room 201, TGU Bldg
14.192.12.0/22       45464     Room 201, TGU Bldg
14.192.16.0/22       45464     Room 201, TGU Bldg
14.192.20.0/22       45464     Room 201, TGU Bldg
14.192.24.0/22       45464     Room 201, TGU Bldg
14.192.28.0/22       45464     Room 201, TGU Bldg
37.19.72.0/21        42322     Zhanr Ltd.
37.25.64.0/21        33828     iptoX GmbH

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      /12:237     
/13:465     /14:814     /15:1448    /16:12072   /17:6121    /18:10183   
/19:20111   /20:27962   /21:28218   /22:38383   /23:35824   /24:201495  
/25:1182    /26:1403    /27:771     /28:166     /29:55      /30:14      
/31:0       /32:18      

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

  ASN   No of nets  Total ann.   Description
 7029     2538          2910      Windstream Communications Inc
 6389     2118          3473      bellsouth.net, inc. 
18566     2042          2093      Covad Communications 
10620     1614          1719      TVCABLE BOGOTA 
 8402     1596          1617      Corbina telecom
30036     1426          1466      Mediacom Communications Corp 
11492     1115          1152      Cable One 
 1785     1063          1860      PaeTec Communications, Inc.
 7011     1051          1168      Citizens Utilities 
15557     1042          1092      LDCOM NETWORKS

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

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

   1:470       2:427       4:15        5:1         6:3         8:366    
  12:1946     13:1        14:576      15:11       16:3        17:7      
  20:9        23:79       24:1716     27:1129     31:734      32:67     
  33:2        34:2        36:4        37:6        38:774      40:115    
  41:2978     42:78       43:1        44:3        46:1142     47:3      
  49:280      50:471      52:13       55:6        56:2        57:42     
  58:924      59:488      60:342      61:1172     62:937      63:1963   
  64:4137     65:2303     66:4372     67:1989     68:1167     69:3134   
  70:924      71:410      72:1787     74:2640     75:431      76:320    
  77:941      78:871      79:469      80:1167     81:839      82:524    
  83:529      84:577      85:1162     86:743      87:905      88:353    
  89:1585     90:249      91:4375     92:533      93:1525     94:1333   
  95:1051     96:398      97:286      98:785      99:38      100:2      
 101:130     103:582     106:11      107:118     108:100     109:1404   
 110:675     111:827     112:432     113:494     114:591     115:707    
 116:873     117:713     118:891     119:1272    120:359     121:671    
 122:1600    123:1029    124:1329    125:1347    128:554     129:189    
 130:185     131:586     132:163     133:21      134:226     135:54     
 136:213     137:151     138:285     139:126     140:492     141:256    
 142:382     143:389     144:501     145:67      146:475     147:222    
 148:634     149:269     150:165     151:191     152:445     153:170    
 154:7       155:383     156:210     157:365     158:154     159:504    
 160:358     161:221     162:333     163:186     164:522     165:389    
 166:544     167:455     168:816     169:146     170:830     171:95     
 172:4       173:1803    174:602     175:400     176:323     177:425    
 178:1148    180:1207    181:39      182:674     183:265     184:408    
 185:1       186:1398    187:780     188:1003    189:1174    190:5316   
 192:5979    193:5439    194:3781    195:3182    196:1291    197:170    
 198:3615    199:4233    200:5523    201:1681    202:8489    203:8524   
 204:4344    205:2419    206:2681    207:2819    208:4010    209:3563   
 210:2746    211:1476    212:1956    213:1800    214:796     215:93     
 216:4919    217:1473    218:569     219:336     220:1255    221:529    
 222:323     223:265    

End of report


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