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Weekly Routing Table Report
From: Routing Analysis Role Account <cscora () apnic net>
Date: Sat, 17 Dec 2011 05:28:34 +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 17 Dec, 2011

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

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

BGP routing table entries examined:                              387142
    Prefixes after maximum aggregation:                          167902
    Deaggregation factor:                                          2.31
    Unique aggregates announced to Internet:                     189021
Total ASes present in the Internet Routing Table:                 39612
    Prefixes per ASN:                                              9.77
Origin-only ASes present in the Internet Routing Table:           32512
Origin ASes announcing only one prefix:                           15502
Transit ASes present in the Internet Routing Table:                5342
Transit-only ASes present in the Internet Routing Table:            145
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:              1923
    Unregistered ASNs in the Routing Table:                         999
Number of 32-bit ASNs allocated by the RIRs:                       2095
Number of 32-bit ASNs visible in the Routing Table:                1758
Prefixes from 32-bit ASNs in the Routing Table:                    4191
Special use prefixes present in the Routing Table:                    2
Prefixes being announced from unallocated address space:             90
Number of addresses announced to Internet:                   2502485008
    Equivalent to 149 /8s, 40 /16s and 228 /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:               91.7
Total number of prefixes smaller than registry allocations:      163725

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

Prefixes being announced by APNIC Region ASes:                    95726
    Total APNIC prefixes after maximum aggregation:               31275
    APNIC Deaggregation factor:                                    3.06
Prefixes being announced from the APNIC address blocks:           92115
    Unique aggregates announced from the APNIC address blocks:    38521
APNIC Region origin ASes present in the Internet Routing Table:    4609
    APNIC Prefixes per ASN:                                       19.99
APNIC Region origin ASes announcing only one prefix:               1248
APNIC Region transit ASes present in the Internet Routing Table:    726
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:    123
Number of APNIC addresses announced to Internet:              631919968
    Equivalent to 37 /8s, 170 /16s and 85 /24s
    Percentage of available APNIC address space announced:         80.1

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:                    146548
    Total ARIN prefixes after maximum aggregation:                74859
    ARIN Deaggregation factor:                                     1.96
Prefixes being announced from the ARIN address blocks:           118628
    Unique aggregates announced from the ARIN address blocks:     48721
ARIN Region origin ASes present in the Internet Routing Table:    14807
    ARIN Prefixes per ASN:                                         8.01
ARIN Region origin ASes announcing only one prefix:                5665
ARIN Region transit ASes present in the Internet Routing Table:    1571
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:               804460224
    Equivalent to 47 /8s, 243 /16s and 22 /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:                     95151
    Total RIPE prefixes after maximum aggregation:                51645
    RIPE Deaggregation factor:                                     1.84
Prefixes being announced from the RIPE address blocks:            87257
    Unique aggregates announced from the RIPE address blocks:     55070
RIPE Region origin ASes present in the Internet Routing Table:    16196
    RIPE Prefixes per ASN:                                         5.39
RIPE Region origin ASes announcing only one prefix:                7990
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:    1222
Number of RIPE addresses announced to Internet:               494441160
    Equivalent to 29 /8s, 120 /16s and 146 /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:                   36850
    Total LACNIC prefixes after maximum aggregation:               7994
    LACNIC Deaggregation factor:                                   4.61
Prefixes being announced from the LACNIC address blocks:          36349
    Unique aggregates announced from the LACNIC address blocks:   18889
LACNIC Region origin ASes present in the Internet Routing Table:   1557
    LACNIC Prefixes per ASN:                                      23.35
LACNIC Region origin ASes announcing only one prefix:               443
LACNIC Region transit ASes present in the Internet Routing Table:   284
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:   395
Number of LACNIC addresses announced to Internet:              94826888
    Equivalent to 5 /8s, 166 /16s and 241 /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:                   8509
    Total AfriNIC prefixes after maximum aggregation:              2057
    AfriNIC Deaggregation factor:                                  4.14
Prefixes being announced from the AfriNIC address blocks:          6551
    Unique aggregates announced from the AfriNIC address blocks:   2061
AfriNIC Region origin ASes present in the Internet Routing Table:   498
    AfriNIC Prefixes per ASN:                                     13.15
AfriNIC Region origin ASes announcing only one prefix:              156
AfriNIC Region transit ASes present in the Internet Routing Table:  108
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:             30843648
    Equivalent to 1 /8s, 214 /16s and 163 /24s
    Percentage of available AfriNIC address space announced:       46.0

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     2513      11104         971   Korea Telecom (KIX)
17974     1716        503          38   PT TELEKOMUNIKASI INDONESIA
 7545     1632        303          86   TPG Internet Pty Ltd
 4755     1517        385         158   TATA Communications formerly 
 7552     1491       1064           7   Vietel Corporation
 9829     1170        989          28   BSNL National Internet Backbo
 9583     1101         81         494   Sify Limited
 4808     1077       2034         304   CNCGROUP IP network: China169
24560      996        385         167   Bharti Airtel Ltd., Telemedia
18101      964        122         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     3479       3814         220   bellsouth.net, inc. 
 7029     2918       1017         200   Windstream Communications Inc
18566     2093        383         177   Covad Communications 
 1785     1855        680         121   PaeTec Communications, Inc.
 4323     1620       1073         386   Time Warner Telecom
20115     1604       1549         626   Charter Communications 
22773     1513       2909         105   Cox Communications, Inc.
30036     1460        261         677   Mediacom Communications Corp 
19262     1388       4683         401   Verizon Global Networks 
 7018     1301       7013         852   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     1592        480          15   Corbina telecom
 2118     1097         99          14   EUnet/RELCOM Autonomous Syste
15557     1035       2161          64   LDCOM NETWORKS
 6830      647       1928         413   UPC Distribution Services
34984      625        132         195   BILISIM TELEKOM
20940      549        177         438   Akamai Technologies European 
12479      539        630          48   Uni2 Autonomous System
 3320      532       8162         398   Deutsche Telekom AG
 3292      480       2106         407   TDC Tele Danmark
 8866      462        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     1717        318         155   TVCABLE BOGOTA 
28573     1577       1064          75   NET Servicos de Comunicao S.A
 8151     1458       2989         347   UniNet S.A. de C.V. 
 7303     1248        752         176   Telecom Argentina Stet-France
27947      631         73          93   Telconet S.A
22047      582        322          17   VTR PUNTO NET S.A. 
 6503      555        434          68   AVANTEL, S.A. 
 7738      551       1050          31   Telecomunicacoes da Bahia S.A
 3816      546        237          89   Empresa Nacional de Telecomun
11172      529        102          96   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     1035        958          13   TEDATA
24863      790        146          36   LINKdotNET AS number
 3741      281        939         230   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     3479       3814         220   bellsouth.net, inc. 
 7029     2918       1017         200   Windstream Communications Inc
 4766     2513      11104         971   Korea Telecom (KIX)
18566     2093        383         177   Covad Communications 
 1785     1855        680         121   PaeTec Communications, Inc.
10620     1717        318         155   TVCABLE BOGOTA 
17974     1716        503          38   PT TELEKOMUNIKASI INDONESIA
 7545     1632        303          86   TPG Internet Pty Ltd
 4323     1620       1073         386   Time Warner Telecom
20115     1604       1549         626   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      2918        2718      Windstream Communications Inc
18566      2093        1916      Covad Communications 
 1785      1855        1734      PaeTec Communications, Inc.
17974      1716        1678      PT TELEKOMUNIKASI INDONESIA
 8402      1592        1577      Corbina telecom
10620      1717        1562      TVCABLE BOGOTA 
 7545      1632        1546      TPG Internet Pty Ltd
 4766      2513        1542      Korea Telecom (KIX)
28573      1577        1502      NET Servicos de Comunicao S.A
 7552      1491        1484      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
37.9.192.0/21        25424     INTERNEXT 2000 S.R.O.
37.10.0.0/17         23456     32-bit ASN transition
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
66.129.0.0/19         3901     Higher Technology Services, I

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     /15:1445    /16:12061   /17:6115    /18:10180   
/19:20115   /20:27947   /21:28173   /22:38333   /23:35855   /24:201635  
/25:1180    /26:1407    /27:784     /28:169     /29:56      /30:14      
/31:0       /32:18      

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

  ASN   No of nets  Total ann.   Description
 7029     2546          2918      Windstream Communications Inc
 6389     2124          3479      bellsouth.net, inc. 
18566     2042          2093      Covad Communications 
10620     1612          1717      TVCABLE BOGOTA 
 8402     1569          1592      Corbina telecom
30036     1420          1460      Mediacom Communications Corp 
11492     1105          1142      Cable One 
 1785     1059          1855      PaeTec Communications, Inc.
 7011     1051          1168      Citizens Utilities 
15557      991          1035      LDCOM NETWORKS

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

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

   1:451       2:415       4:15        5:1         6:3         8:360    
  12:1944     13:1        14:562      15:11       16:3        17:7      
  20:9        23:74       24:1695     27:1122     31:734      32:67     
  33:2        34:2        36:4        38:776      39:1        40:114    
  41:2992     42:78       43:1        44:3        46:1136     47:3      
  49:278      50:464      52:13       55:5        56:2        57:44     
  58:958      59:485      60:342      61:1185     62:932      63:1964   
  64:4112     65:2302     66:4371     67:2005     68:1183     69:3135   
  70:919      71:378      72:1776     74:2637     75:432      76:319    
  77:933      78:856      79:442      80:1171     81:848      82:528    
  83:530      84:570      85:1163     86:733      87:899      88:342    
  89:1578     90:247      91:4368     92:540      93:1505     94:1321   
  95:1047     96:397      97:286      98:766      99:38      100:1      
 101:130     103:561     106:11      107:113     108:99      109:1403   
 110:672     111:825     112:379     113:490     114:601     115:708    
 116:887     117:716     118:894     119:1244    120:343     121:674    
 122:1559    123:1028    124:1379    125:1340    128:556     129:189    
 130:182     131:584     132:162     133:21      134:225     135:54     
 136:213     137:151     138:286     139:124     140:493     141:255    
 142:382     143:388     144:490     145:67      146:477     147:222    
 148:634     149:273     150:164     151:192     152:445     153:172    
 154:7       155:382     156:210     157:366     158:155     159:499    
 160:341     161:221     162:362     163:187     164:521     165:387    
 166:541     167:459     168:816     169:146     170:829     171:93     
 172:4       173:1793    174:596     175:416     176:325     177:436    
 178:1143    180:1204    181:39      182:670     183:251     184:403    
 185:1       186:1426    187:783     188:954     189:1178    190:5290   
 192:5981    193:5191    194:4280    195:3364    196:1283    197:173    
 198:3629    199:4232    200:5512    201:1714    202:8480    203:8509   
 204:4345    205:2406    206:2668    207:2835    208:4024    209:3560   
 210:2750    211:1475    212:1972    213:1802    214:800     215:93     
 216:4927    217:1499    218:584     219:351     220:1250    221:529    
 222:326     223:264    

End of report


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