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Weekly Routing Table Report
From: Routing Analysis Role Account <cscora () apnic net>
Date: Sat, 2 Apr 2011 04:39:22 +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 <pfs () cisco com>.

Routing Table Report   04:00 +10GMT Sat 02 Apr, 2011

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

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

BGP routing table entries examined:                              351604
    Prefixes after maximum aggregation:                          159727
    Deaggregation factor:                                          2.20
    Unique aggregates announced to Internet:                     174049
Total ASes present in the Internet Routing Table:                 37146
    Prefixes per ASN:                                              9.47
Origin-only ASes present in the Internet Routing Table:           31182
Origin ASes announcing only one prefix:                           15020
Transit ASes present in the Internet Routing Table:                5019
Transit-only ASes present in the Internet Routing Table:            133
Average AS path length visible in the Internet Routing Table:       4.3
    Max AS path length visible:                                      24
    Max AS path prepend of ASN (36992)                               22
Prefixes from unregistered ASNs in the Routing Table:               516
    Unregistered ASNs in the Routing Table:                         226
Number of 32-bit ASNs allocated by the RIRs:                       1247
Number of 32-bit ASNs visible in the Routing Table:                 945
Prefixes from 32-bit ASNs in the Routing Table:                    2086
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            194
Number of addresses announced to Internet:                   2393096992
    Equivalent to 142 /8s, 163 /16s and 195 /24s
    Percentage of available address space announced:               64.6
    Percentage of allocated address space announced:               64.6
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               90.1
Total number of prefixes smaller than registry allocations:      145654

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

Prefixes being announced by APNIC Region ASes:                    87503
    Total APNIC prefixes after maximum aggregation:               29875
    APNIC Deaggregation factor:                                    2.93
Prefixes being announced from the APNIC address blocks:           84414
    Unique aggregates announced from the APNIC address blocks:    36682
APNIC Region origin ASes present in the Internet Routing Table:    4385
    APNIC Prefixes per ASN:                                       19.25
APNIC Region origin ASes announcing only one prefix:               1219
APNIC Region transit ASes present in the Internet Routing Table:    696
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         20
Number of APNIC region 32-bit ASNs visible in the Routing Table:     45
Number of APNIC addresses announced to Internet:              601819680
    Equivalent to 35 /8s, 223 /16s and 10 /24s
    Percentage of available APNIC address space announced:         76.3

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079
                       55296-56319, 131072-132095
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:                    138612
    Total ARIN prefixes after maximum aggregation:                70802
    ARIN Deaggregation factor:                                     1.96
Prefixes being announced from the ARIN address blocks:           111113
    Unique aggregates announced from the ARIN address blocks:     45000
ARIN Region origin ASes present in the Internet Routing Table:    14282
    ARIN Prefixes per ASN:                                         7.78
ARIN Region origin ASes announcing only one prefix:                5446
ARIN Region transit ASes present in the Internet Routing Table:    1486
Average ARIN Region AS path length visible:                         4.0
    Max ARIN Region AS path length visible:                          23
Number of ARIN region 32-bit ASNs visible in the Routing Table:      10
Number of ARIN addresses announced to Internet:               797373184
    Equivalent to 47 /8s, 134 /16s and 243 /24s
    Percentage of available ARIN address space announced:          63.4

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:                     83154
    Total RIPE prefixes after maximum aggregation:                47505
    RIPE Deaggregation factor:                                     1.75
Prefixes being announced from the RIPE address blocks:            76419
    Unique aggregates announced from the RIPE address blocks:     50301
RIPE Region origin ASes present in the Internet Routing Table:    15463
    RIPE Prefixes per ASN:                                         4.94
RIPE Region origin ASes announcing only one prefix:                7788
RIPE Region transit ASes present in the Internet Routing Table:    2418
Average RIPE Region AS path length visible:                         4.6
    Max RIPE Region AS path length visible:                          23
Number of RIPE region 32-bit ASNs visible in the Routing Table:     698
Number of RIPE addresses announced to Internet:               465539072
    Equivalent to 27 /8s, 191 /16s and 144 /24s
    Percentage of available RIPE address space announced:          75.0

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:                   32380
    Total LACNIC prefixes after maximum aggregation:               7383
    LACNIC Deaggregation factor:                                   4.39
Prefixes being announced from the LACNIC address blocks:          31277
    Unique aggregates announced from the LACNIC address blocks:   16289
LACNIC Region origin ASes present in the Internet Routing Table:   1442
    LACNIC Prefixes per ASN:                                      21.69
LACNIC Region origin ASes announcing only one prefix:               436
LACNIC Region transit ASes present in the Internet Routing Table:   264
Average LACNIC Region AS path length visible:                       4.4
    Max LACNIC Region AS path length visible:                        19
Number of LACNIC region 32-bit ASNs visible in the Routing Table:   187
Number of LACNIC addresses announced to Internet:              81603200
    Equivalent to 4 /8s, 221 /16s and 42 /24s
    Percentage of available LACNIC address space announced:        54.0

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:                   7606
    Total AfriNIC prefixes after maximum aggregation:              1823
    AfriNIC Deaggregation factor:                                  4.17
Prefixes being announced from the AfriNIC address blocks:          5989
    Unique aggregates announced from the AfriNIC address blocks:   1872
AfriNIC Region origin ASes present in the Internet Routing Table:   440
    AfriNIC Prefixes per ASN:                                     13.61
AfriNIC Region origin ASes announcing only one prefix:              131
AfriNIC Region transit ASes present in the Internet Routing Table:   98
Average AfriNIC Region AS path length visible:                      5.1
    Max AfriNIC Region AS path length visible:                       24
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:    5
Number of AfriNIC addresses announced to Internet:             22723328
    Equivalent to 1 /8s, 90 /16s and 187 /24s
    Percentage of available AfriNIC address space announced:       33.9

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     2431       9514         905   Korea Telecom (KIX)
 7545     1543        301          83   TPG Internet Pty Ltd
17974     1445        480          33   PT TELEKOMUNIKASI INDONESIA
 4755     1435        634         167   TATA Communications formerly 
24560     1135        322         204   Bharti Airtel Ltd., Telemedia
 9583     1055         77         494   Sify Limited
 4808     1024       2100         290   CNCGROUP IP network: China169
 9829     1006        869          51   BSNL National Internet Backbo
17488      940        162          98   Hathway IP Over Cable Interne
18101      935        116         139   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     3670       3838         257   bellsouth.net, inc. 
 4323     2559       1090         396   Time Warner Telecom
 1785     1787        681         131   PaeTec Communications, Inc.
18566     1606        331         195   Covad Communications 
 6478     1591        304          44   AT&T Worldnet Services 
20115     1532       1541         641   Charter Communications 
19262     1489       4935         303   Verizon Global Networks 
 7018     1356       6785         882   AT&T WorldNet Services
11492     1327        240          15   Cable One 
22773     1292       2865          84   Cox Communications, Inc.

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
 6830      514       1780         318   UPC Distribution Services
34984      484         97         186   BILISIM TELEKOM
 3292      454       2013         391   TDC Tele Danmark
 8866      446        134          26   Bulgarian Telecommunication C
20940      428        108         330   Akamai Technologies European 
 9198      424        267          15   Kazakhtelecom Data Network Ad
 3320      413       7604         359   Deutsche Telekom AG
 8551      403        353          46   Bezeq International
12479      398        577           6   Uni2 Autonomous System
  702      395       1800         308   UUNET - Commercial IP service

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     1405        262         152   TVCABLE BOGOTA 
28573     1259        969          84   NET Servicos de Comunicao S.A
 8151     1248       2680         372   UniNet S.A. de C.V. 
 6503     1116        354          72   AVANTEL, S.A. 
 7303      925        465         147   Telecom Argentina Stet-France
14420      642         52          91   CORPORACION NACIONAL DE TELEC
22047      567        310          15   VTR PUNTO NET S.A. 
 3816      515        225          98   Empresa Nacional de Telecomun
11172      486         83          79   Servicios Alestra S.A de C.V 
27947      480         53          53   Telconet S.A

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      839        445          11   TEDATA
24863      774        147          39   LINKdotNET AS number
15475      421         90           8   Nile Online
36992      292        271          14   Etisalat MISR
 3741      265        985         227   The Internet Solution 
24835      232         78          10   RAYA Telecom - Egypt
 6713      231        215          12   Itissalat Al-MAGHRIB
33776      227         13           5   Starcomms Nigeria Limited
29571      192         17          11   Ci Telecom Autonomous system 
16637      146        441          85   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     3670       3838         257   bellsouth.net, inc. 
 4323     2559       1090         396   Time Warner Telecom
 4766     2431       9514         905   Korea Telecom (KIX)
23456     2086        503        1120   32-bit ASN transition
 1785     1787        681         131   PaeTec Communications, Inc.
18566     1606        331         195   Covad Communications 
 6478     1591        304          44   AT&T Worldnet Services 
 7545     1543        301          83   TPG Internet Pty Ltd
20115     1532       1541         641   Charter Communications 
19262     1489       4935         303   Verizon Global Networks 

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

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

  ASN   No of nets  Net Savings Description
 4323      2559        2163      Time Warner Telecom
 1785      1787        1656      PaeTec Communications, Inc.
 6478      1591        1547      AT&T Worldnet Services 
 4766      2431        1526      Korea Telecom (KIX)
 7545      1543        1460      TPG Internet Pty Ltd
17974      1445        1412      PT TELEKOMUNIKASI INDONESIA
18566      1606        1411      Covad Communications 
11492      1327        1312      Cable One 
 4755      1435        1268      TATA Communications formerly 
10620      1405        1253      TVCABLE BOGOTA 

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
13746   UNALLOCATED  12.24.56.0/24         7018       AT&T WorldNet Servic
32567   UNALLOCATED  12.25.107.0/24        4323       Time Warner Telecom
26973   UNALLOCATED  12.39.152.0/24        7018       AT&T WorldNet Servic
26973   UNALLOCATED  12.39.154.0/23        7018       AT&T WorldNet Servic
26973   UNALLOCATED  12.39.155.0/24        7018       AT&T WorldNet Servic
26973   UNALLOCATED  12.39.159.0/24        7018       AT&T WorldNet Servic
25639   UNALLOCATED  12.41.169.0/24        7018       AT&T WorldNet Servic
13317   UNALLOCATED  12.44.10.0/24         7018       AT&T WorldNet Servic

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

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

Network            Origin AS  Description
1.3.0.0/16           38639     NTT Communications Corporatio
2.56.0.0/16          44559     E-Rent LLC
24.225.128.0/18      36377     Comcast Telecommunications, I
24.225.192.0/23      36377     Comcast Telecommunications, I
24.225.192.0/18      36377     Comcast Telecommunications, I
24.225.224.0/21      36377     Comcast Telecommunications, I
24.225.237.0/24      36377     Comcast Telecommunications, I
24.225.248.0/21      36377     Comcast Telecommunications, I
31.170.224.0/19      29049     AzerSat LLC.
31.171.0.0/17        29049     AzerSat LLC.

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       /9:11      /10:26      /11:74      /12:218     
/13:448     /14:769     /15:1375    /16:11576   /17:5715    /18:9422    
/19:19073   /20:24863   /21:25322   /22:33630   /23:32170   /24:183709  
/25:1139    /26:1280    /27:708     /28:40      /29:9       /30:2       
/31:0       /32:6       

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

  ASN   No of nets  Total ann.   Description
 6389     2264          3670      bellsouth.net, inc. 
18566     1585          1606      Covad Communications 
 6478     1545          1591      AT&T Worldnet Services 
 4323     1377          2559      Time Warner Telecom
10620     1295          1405      TVCABLE BOGOTA 
11492     1276          1327      Cable One 
23456     1108          2086      32-bit ASN transition
 7011     1064          1164      Citizens Utilities 
 1785     1056          1787      PaeTec Communications, Inc.
 6503      900          1116      AVANTEL, S.A. 

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

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

   1:296       2:54        4:14        5:1         8:347      12:2014   
  13:1        14:430      15:15       16:3        17:8        20:9      
  23:5        24:1597     27:710      31:53       32:60       33:3      
  34:2        37:1        38:751      39:1        40:101      41:2370   
  42:1        44:3        46:791      47:4        49:141      50:139    
  52:13       55:7        56:2        57:30       58:827      59:487    
  60:387      61:1142     62:1008     63:1909     64:3876     65:2337   
  66:4321     67:1809     68:1079     69:2906     70:697      71:343    
  72:1895     73:1        74:2328     75:285      76:336      77:851    
  78:694      79:451      80:1080     81:820      82:507      83:464    
  84:646      85:1032     86:555      87:762      88:339      89:1555   
  90:174      91:3652     92:510      93:1040     94:1232     95:785    
  96:459      97:253      98:817      99:35      101:49      106:1      
 107:4       108:80      109:927     110:518     111:680     112:324    
 113:385     114:508     115:669     116:934     117:678     118:767    
 119:1130    120:287     121:710     122:1611    123:1057    124:1286   
 125:1249    128:265     129:174     130:172     131:561     132:109    
 133:20      134:216     135:49      136:212     137:142     138:300    
 139:105     140:486     141:173     142:378     143:390     144:483    
 145:52      146:442     147:202     148:639     149:271     150:166    
 151:187     152:298     153:180     154:3       155:390     156:187    
 157:349     158:131     159:381     160:317     161:211     162:277    
 163:166     164:493     165:349     166:503     167:414     168:722    
 169:154     170:784     171:74      172:2       173:1260    174:531    
 175:351     177:70      178:784     180:799     181:4       182:407    
 183:197     184:237     185:1       186:1117    187:905     188:925    
 189:1038    190:4807    192:5768    193:4796    194:3479    195:2942   
 196:1204    197:15      198:3594    199:3879    200:5570    201:1485   
 202:8366    203:8452    204:4129    205:2321    206:2647    207:3023   
 208:3914    209:3504    210:2720    211:1366    212:1970    213:1707   
 214:758     215:66      216:4849    217:1630    218:557     219:373    
 220:1194    221:480     222:318     223:104    

End of report


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