Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Mar 19 16:05:01 CDT 2010


This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.
Daily listings are sent to bgp-stats at lists.apnic.net

For historical data, please see http://thyme.apnic.net.

If you have any comments please contact Philip Smith <pfsinoz at gmail.com>.

Routing Table Report   04:00 +10GMT Sat 20 Mar, 2010

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

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

BGP routing table entries examined:                              312799
    Prefixes after maximum aggregation:                          145223
    Deaggregation factor:                                          2.15
    Unique aggregates announced to Internet:                     153590
Total ASes present in the Internet Routing Table:                 33561
    Prefixes per ASN:                                              9.32
Origin-only ASes present in the Internet Routing Table:           29134
Origin ASes announcing only one prefix:                           14245
Transit ASes present in the Internet Routing Table:                4427
Transit-only ASes present in the Internet Routing Table:            106
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      22
    Max AS path prepend of ASN (32374)                               19
Prefixes from unregistered ASNs in the Routing Table:               966
    Unregistered ASNs in the Routing Table:                         158
Number of 32-bit ASNs allocated by the RIRs:                        481
Prefixes from 32-bit ASNs in the Routing Table:                     480
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            218
Number of addresses announced to Internet:                   2204886880
    Equivalent to 131 /8s, 107 /16s and 231 /24s
    Percentage of available address space announced:               59.5
    Percentage of allocated address space announced:               66.1
    Percentage of available address space allocated:               90.0
    Percentage of address space in use by end-sites:               81.7
Total number of prefixes smaller than registry allocations:      149633

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

Prefixes being announced by APNIC Region ASes:                    75611
    Total APNIC prefixes after maximum aggregation:               26228
    APNIC Deaggregation factor:                                    2.88
Prefixes being announced from the APNIC address blocks:           72268
    Unique aggregates announced from the APNIC address blocks:    31854
APNIC Region origin ASes present in the Internet Routing Table:    3976
    APNIC Prefixes per ASN:                                       18.18
APNIC Region origin ASes announcing only one prefix:               1089
APNIC Region transit ASes present in the Internet Routing Table:    626
Average APNIC Region AS path length visible:                        3.6
    Max APNIC Region AS path length visible:                         15
Number of APNIC addresses announced to Internet:              504451648
    Equivalent to 30 /8s, 17 /16s and 82 /24s
    Percentage of available APNIC address space announced:         79.1

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,  27/8,  43/8,  58/8,  59/8,  60/8,  61/8,
                       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,

ARIN Region Analysis Summary
----------------------------

Prefixes being announced by ARIN Region ASes:                    129513
    Total ARIN prefixes after maximum aggregation:                67928
    ARIN Deaggregation factor:                                     1.91
Prefixes being announced from the ARIN address blocks:           103342
    Unique aggregates announced from the ARIN address blocks:     40062
ARIN Region origin ASes present in the Internet Routing Table:    13568
    ARIN Prefixes per ASN:                                         7.62
ARIN Region origin ASes announcing only one prefix:                5261
ARIN Region transit ASes present in the Internet Routing Table:    1338
Average ARIN Region AS path length visible:                         3.4
    Max ARIN Region AS path length visible:                          22
Number of ARIN addresses announced to Internet:               724084128
    Equivalent to 43 /8s, 40 /16s and 165 /24s
    Percentage of available ARIN address space announced:          61.7

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,  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,  54/8,
                        55/8,  56/8,  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, 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:                     72365
    Total RIPE prefixes after maximum aggregation:                42232
    RIPE Deaggregation factor:                                     1.71
Prefixes being announced from the RIPE address blocks:            65423
    Unique aggregates announced from the RIPE address blocks:     43239
RIPE Region origin ASes present in the Internet Routing Table:    14233
    RIPE Prefixes per ASN:                                         4.60
RIPE Region origin ASes announcing only one prefix:                7383
RIPE Region transit ASes present in the Internet Routing Table:    2130
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          21
Number of RIPE addresses announced to Internet:               418727296
    Equivalent to 24 /8s, 245 /16s and 69 /24s
    Percentage of available RIPE address space announced:          78.0

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, 196608-197631
RIPE Address Blocks      2/8,  25/8,  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, 178/8, 193/8, 194/8,
                       195/8, 212/8, 213/8, 217/8,

LACNIC Region Analysis Summary
------------------------------

Prefixes being announced by LACNIC Region ASes:                   27949
    Total LACNIC prefixes after maximum aggregation:               6632
    LACNIC Deaggregation factor:                                   4.21
Prefixes being announced from the LACNIC address blocks:          26292
    Unique aggregates announced from the LACNIC address blocks:   13679
LACNIC Region origin ASes present in the Internet Routing Table:   1253
    LACNIC Prefixes per ASN:                                      20.98
LACNIC Region origin ASes announcing only one prefix:               411
LACNIC Region transit ASes present in the Internet Routing Table:   214
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        17
Number of LACNIC addresses announced to Internet:              71650304
    Equivalent to 4 /8s, 69 /16s and 76 /24s
    Percentage of available LACNIC address space announced:        71.2

LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       262144-263167 plus ERX transfers
LACNIC Address Blocks  186/8, 187/8, 189/8, 190/8, 200/8, 201/8,

AfriNIC Region Analysis Summary
-------------------------------

Prefixes being announced by AfriNIC Region ASes:                   6643
    Total AfriNIC prefixes after maximum aggregation:              1781
    AfriNIC Deaggregation factor:                                  3.73
Prefixes being announced from the AfriNIC address blocks:          4996
    Unique aggregates announced from the AfriNIC address blocks:   1480
AfriNIC Region origin ASes present in the Internet Routing Table:   345
    AfriNIC Prefixes per ASN:                                     14.48
AfriNIC Region origin ASes announcing only one prefix:              101
AfriNIC Region transit ASes present in the Internet Routing Table:   75
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       14
Number of AfriNIC addresses announced to Internet:             14861056
    Equivalent to 0 /8s, 226 /16s and 195 /24s
    Percentage of available AfriNIC address space announced:       44.3

AfriNIC AS Blocks      36864-37887, 327680-328703 & ERX transfers
AfriNIC Address Blocks  41/8, 197/8,

APNIC Region per AS prefix count summary
----------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 4766     1865       8405         475   Korea Telecom (KIX)
17488     1307        134         133   Hathway IP Over Cable Interne
 4755     1287        287         136   TATA Communications formerly 
 4134     1016      20245         401   CHINANET-BACKBONE
 7545     1010        199         101   TPG Internet Pty Ltd
 9583     1003         75         500   Sify Limited
18101      997        221          41   Reliance Infocom Ltd Internet
17974      939        282          20   PT TELEKOMUNIKASI INDONESIA
24560      844        300         167   Bharti Airtel Ltd., Telemedia
 4808      843       1585         215   CNCGROUP IP network: China169

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

ARIN Region per AS prefix count summary
---------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6389     4061       3842         311   bellsouth.net, inc. 
 4323     2120       1057         379   Time Warner Telecom
 1785     1794        698         131   PaeTec Communications, Inc.
 7018     1565       5757        1005   AT&T WorldNet Services
20115     1537       1497         656   Charter Communications 
 2386     1326        616         934   AT&T Data Communications Serv
 3356     1230      10949         425   Level 3 Communications, LLC 
 6478     1162        246         165   AT&T Worldnet Services 
11492     1142        222          14   Cable One 
22773     1127       2604          70   Cox Communications, Inc.

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

RIPE Region per AS prefix count summary
---------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
35805      594         40           5   United Telecom of Georgia
30890      450        101         207   Evolva Telecom
 3292      449       1900         391   TDC Tele Danmark
  702      421       1870         333   UUNET - Commercial IP service
 8551      400        355          36   Bezeq International
 8866      392        117          18   Bulgarian Telecommunication C
 3320      364       7072         318   Deutsche Telekom AG
 3301      356       1413         317   TeliaNet Sweden
 3215      347       3206         103   France Telecom Transpac
12479      330        576           5   Uni2 Autonomous System

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

LACNIC Region per AS prefix count summary
-----------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8151     1533       2892         237   UniNet S.A. de C.V. 
10620     1028        229         156   TVCABLE BOGOTA 
28573      947        730          82   NET Servicos de Comunicao S.A
 7303      686        360          97   Telecom Argentina Stet-France
22047      546        310          15   VTR PUNTO NET S.A. 
 6503      508        168         195   AVANTEL, S.A. 
 7738      477        922          30   Telecomunicacoes da Bahia S.A
11830      474        308          56   Instituto Costarricense de El
18881      471        268          11   Global Village Telecom 
 3816      454        195          69   Empresa Nacional de Telecomun

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

AfriNIC Region per AS prefix count summary
------------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8452      914        445          10   TEDATA
24863      710        144          41   LINKdotNET AS number
36992      573        131         167   Etisalat MISR
 3741      274        853         233   The Internet Solution 
33776      262         14          11   Starcomms Nigeria Limited
 2018      211        215         122   Tertiary Education Network 
 6713      177        167          12   Itissalat Al-MAGHRIB
29571      171         19           9   Ci Telecom Autonomous system 
24835      136         78          11   RAYA Telecom - Egypt
29975      133        506          14   Vodacom

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

Global Per AS prefix count summary
----------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6389     4061       3842         311   bellsouth.net, inc. 
 4323     2120       1057         379   Time Warner Telecom
 4766     1865       8405         475   Korea Telecom (KIX)
 1785     1794        698         131   PaeTec Communications, Inc.
 7018     1565       5757        1005   AT&T WorldNet Services
20115     1537       1497         656   Charter Communications 
 8151     1533       2892         237   UniNet S.A. de C.V. 
 2386     1326        616         934   AT&T Data Communications Serv
17488     1307        134         133   Hathway IP Over Cable Interne
 4755     1287        287         136   TATA Communications formerly 

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

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

  ASN   No of nets  Net Savings Description
 4323      2120        1741      Time Warner Telecom
 1785      1794        1663      PaeTec Communications, Inc.
 4766      1865        1390      Korea Telecom (KIX)
 8151      1533        1296      UniNet S.A. de C.V. 
17488      1307        1174      Hathway IP Over Cable Interne
 4755      1287        1151      TATA Communications formerly 
11492      1142        1128      Cable One 
22773      1127        1057      Cox Communications, Inc.
18566      1059        1049      Covad Communications 
 6478      1162         997      AT&T Worldnet Services 

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

List of Unregistered Origin ASNs (Global)
-----------------------------------------

Bad AS  Designation  Network              Transit AS  Description
16927   UNALLOCATED   12.0.252.0/23         7018       AT&T WorldNet Servic
15132   UNALLOCATED   12.9.150.0/24         7018       AT&T WorldNet Servic
32567   UNALLOCATED   12.14.170.0/24        7018       AT&T WorldNet Servic
13746   UNALLOCATED   12.24.56.0/24         7018       AT&T WorldNet Servic
32567   UNALLOCATED   12.25.107.0/24        7018       AT&T WorldNet Servic
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

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

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

Network            Origin AS  Description
2.0.0.0/16           12654     RIPE NCC RIS Project
2.1.0.0/21           12654     RIPE NCC RIS Project
2.1.24.0/24          12654     RIPE NCC RIS Project
41.190.64.0/22       28683     Office des Postes et telecomm
41.202.96.0/19       29571     Ci Telecom Autonomous system 
41.220.144.0/20      36918     ORASCOM TELECOM ALGERIE VSAT
41.220.159.0/24      36918     ORASCOM TELECOM ALGERIE VSAT
41.222.79.0/24       36938     >>UNKNOWN<<
41.223.24.0/22       25747     VSC Satellite Co 
41.223.92.0/22       36936     >>UNKNOWN<<

Complete listing at http://thyme.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        /8:20       /9:10      /10:25      /11:66      /12:192     
/13:389     /14:669     /15:1238    /16:10989   /17:5185    /18:8756    
/19:18125   /20:22106   /21:22221   /22:28728   /23:28428   /24:162777  
/25:942     /26:1177    /27:589     /28:137     /29:14      /30:8       
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2628          4061      bellsouth.net, inc. 
 4766     1477          1865      Korea Telecom (KIX)
 1785     1255          1794      PaeTec Communications, Inc.
 4323     1065          2120      Time Warner Telecom
17488     1060          1307      Hathway IP Over Cable Interne
11492     1052          1142      Cable One 
18566     1040          1059      Covad Communications 
 7018      943          1565      AT&T WorldNet Services
10620      934          1028      TVCABLE BOGOTA 
18101      868           997      Reliance Infocom Ltd Internet

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

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

   2:1         4:12        8:247      12:1986     13:10       15:22     
  16:3        17:8        20:39       24:1368     27:1        32:48     
  38:648      40:100      41:2008     44:3        46:1        47:23     
  52:6        55:2        56:2        57:24       58:629      59:638    
  60:413      61:1094     62:1051     63:1982     64:3700     65:2343   
  66:3455     67:1812     68:1050     69:2802     70:697      71:240    
  72:1859     73:2        74:1952     75:245      76:315      77:828    
  78:580      79:414      80:997      81:772      82:449      83:447    
  84:675      85:1023     86:384      87:677      88:428      89:1547   
  90:78       91:2702     92:431      93:1139     94:1377     95:551    
  96:230      97:304      98:526      99:26      109:425     110:304    
 111:454     112:243     113:236     114:384     115:596     116:1027   
 117:630     118:378     119:929     120:148     121:844     122:1387   
 123:879     124:1054    125:1286    128:208     129:204     130:142    
 131:486     132:219     133:17      134:194     135:44      136:230    
 137:171     138:242     139:94      140:471     141:137     142:375    
 143:346     144:412     145:50      146:414     147:169     148:582    
 149:249     150:151     151:169     152:258     153:167     154:2      
 155:278     156:181     157:324     158:96      159:356     160:307    
 161:179     162:269     163:163     164:310     165:507     166:508    
 167:394     168:680     169:157     170:729     171:46      172:2      
 173:555     174:623     175:65      178:8       180:349     182:35     
 183:232     184:19      186:334     187:242     188:1177    189:711    
 190:3574    192:5723    193:4562    194:3361    195:2802    196:1174   
 198:3554    199:3380    200:5280    201:1479    202:8051    203:8298   
 204:4054    205:2169    206:2472    207:2752    208:3912    209:3366   
 210:2551    211:1200    212:1717    213:1689    214:263     215:61     
 216:4463    217:1514    218:491     219:427     220:1076    221:380    
 222:313    

End of report




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