Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Nov 20 13:07:42 CST 2009


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 <pfs at cisco.com>.

Routing Table Report   04:00 +10GMT Sat 21 Nov, 2009

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

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

BGP routing table entries examined:                              303515
    Prefixes after maximum aggregation:                          141876
    Deaggregation factor:                                          2.14
    Unique aggregates announced to Internet:                     149990
Total ASes present in the Internet Routing Table:                 32755
    Prefixes per ASN:                                              9.27
Origin-only ASes present in the Internet Routing Table:           28465
Origin ASes announcing only one prefix:                           13890
Transit ASes present in the Internet Routing Table:                4290
Transit-only ASes present in the Internet Routing Table:            101
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      39
    Max AS path prepend of ASN (22394)                               36
Prefixes from unregistered ASNs in the Routing Table:               641
    Unregistered ASNs in the Routing Table:                         131
Number of 32-bit ASNs allocated by the RIRs:                        325
Prefixes from 32-bit ASNs in the Routing Table:                     268
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            178
Number of addresses announced to Internet:                   2135526784
    Equivalent to 127 /8s, 73 /16s and 141 /24s
    Percentage of available address space announced:               57.6
    Percentage of allocated address space announced:               65.3
    Percentage of available address space allocated:               88.2
    Percentage of address space in use by end-sites:               80.1
Total number of prefixes smaller than registry allocations:      145792

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

Prefixes being announced by APNIC Region ASes:                    72525
    Total APNIC prefixes after maximum aggregation:               25316
    APNIC Deaggregation factor:                                    2.86
Prefixes being announced from the APNIC address blocks:           69057
    Unique aggregates announced from the APNIC address blocks:    30639
APNIC Region origin ASes present in the Internet Routing Table:    3873
    APNIC Prefixes per ASN:                                       17.83
APNIC Region origin ASes announcing only one prefix:               1056
APNIC Region transit ASes present in the Internet Routing Table:    595
Average APNIC Region AS path length visible:                        3.6
    Max APNIC Region AS path length visible:                         22
Number of APNIC addresses announced to Internet:              471116320
    Equivalent to 28 /8s, 20 /16s and 170 /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, 131072-132095
APNIC Address Blocks    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, 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:                    128091
    Total ARIN prefixes after maximum aggregation:                67322
    ARIN Deaggregation factor:                                     1.90
Prefixes being announced from the ARIN address blocks:           102319
    Unique aggregates announced from the ARIN address blocks:     38824
ARIN Region origin ASes present in the Internet Routing Table:    13364
    ARIN Prefixes per ASN:                                         7.66
ARIN Region origin ASes announcing only one prefix:                5178
ARIN Region transit ASes present in the Internet Routing Table:    1320
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          39
Number of ARIN addresses announced to Internet:               731512352
    Equivalent to 43 /8s, 153 /16s and 254 /24s
    Percentage of available ARIN address space announced:          64.1

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,  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, 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:                     70128
    Total RIPE prefixes after maximum aggregation:                40973
    RIPE Deaggregation factor:                                     1.71
Prefixes being announced from the RIPE address blocks:            63332
    Unique aggregates announced from the RIPE address blocks:     42329
RIPE Region origin ASes present in the Internet Routing Table:    13789
    RIPE Prefixes per ASN:                                         4.59
RIPE Region origin ASes announcing only one prefix:                7170
RIPE Region transit ASes present in the Internet Routing Table:    2068
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          20
Number of RIPE addresses announced to Internet:               405095104
    Equivalent to 24 /8s, 37 /16s and 66 /24s
    Percentage of available RIPE address space announced:          75.5

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:                   26381
    Total LACNIC prefixes after maximum aggregation:               6416
    LACNIC Deaggregation factor:                                   4.11
Prefixes being announced from the LACNIC address blocks:          24694
    Unique aggregates announced from the LACNIC address blocks:   13655
LACNIC Region origin ASes present in the Internet Routing Table:   1209
    LACNIC Prefixes per ASN:                                      20.43
LACNIC Region origin ASes announcing only one prefix:               389
LACNIC Region transit ASes present in the Internet Routing Table:   200
Average LACNIC Region AS path length visible:                       4.1
    Max LACNIC Region AS path length visible:                        23
Number of LACNIC addresses announced to Internet:              68308480
    Equivalent to 4 /8s, 18 /16s and 78 /24s
    Percentage of available LACNIC address space announced:        67.9

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:                   5891
    Total AfriNIC prefixes after maximum aggregation:              1545
    AfriNIC Deaggregation factor:                                  3.81
Prefixes being announced from the AfriNIC address blocks:          4280
    Unique aggregates announced from the AfriNIC address blocks:   1382
AfriNIC Region origin ASes present in the Internet Routing Table:   332
    AfriNIC Prefixes per ASN:                                     12.89
AfriNIC Region origin ASes announcing only one prefix:               97
AfriNIC Region transit ASes present in the Internet Routing Table:   69
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       16
Number of AfriNIC addresses announced to Internet:             13490176
    Equivalent to 0 /8s, 205 /16s and 216 /24s
    Percentage of available AfriNIC address space announced:       40.2

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     1775       7507         461   Korea Telecom (KIX)
17488     1443        143         134   Hathway IP Over Cable Interne
 4755     1277        292         148   TATA Communications formerly 
 4134     1011      19183         392   CHINANET-BACKBONE
 9583      994         73         491   Sify Limited
18101      983        204          34   Reliance Infocom Ltd Internet
 7545      905        199         100   TPG Internet Pty Ltd
17974      866        265          61   PT TELEKOMUNIKASI INDONESIA
 9829      846        663          23   BSNL National Internet Backbo
24560      802        293         174   Bharti Airtel Ltd., Telemedia

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     4248       3879         312   bellsouth.net, inc. 
 4323     3739       1054         399   Time Warner Telecom
 1785     1778        714         136   PaeTec Communications, Inc.
 7018     1582       5838        1034   AT&T WorldNet Services
20115     1518       1483         665   Charter Communications 
 2386     1296        632         932   AT&T Data Communications Serv
 6478     1280        267         368   AT&T Worldnet Services 
 3356     1227      10967         448   Level 3 Communications, LLC 
11492     1142        222          14   Cable One 
22773     1121       2600          66   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
30890      514         98         207   Evolva Telecom
 3292      446       1906         391   TDC Tele Danmark
35805      445         40           5   United Telecom of Georgia
  702      418       1822         336   UUNET - Commercial IP service
 9198      417        138          12   Kazakhtelecom Data Network Ad
 8551      377        354          41   Bezeq International
 8866      367        110          23   Bulgarian Telecommunication C
 3320      357       7067         304   Deutsche Telekom AG
 3215      349       3144         111   France Telecom Transpac
 3301      348       1412         303   TeliaNet Sweden

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     1580       2899         232   UniNet S.A. de C.V. 
10620     1017        226         110   TVCABLE BOGOTA 
28573      811        665          87   NET Servicos de Comunicao S.A
 7303      663        349          95   Telecom Argentina Stet-France
22047      546        302          14   VTR PUNTO NET S.A. 
11830      473        308          59   Instituto Costarricense de El
11172      445         99          70   Servicios Alestra S.A de C.V 
14117      437         29          11   Telefonica del Sur S.A. 
 7738      429        858          29   Telecomunicacoes da Bahia S.A
 6471      423         96          31   ENTEL CHILE S.A. 

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     1045        188           7   TEDATA
24863      756        130          46   LINKdotNET AS number
 3741      274        857         234   The Internet Solution 
 2018      190        188         118   Tertiary Education Network 
 6713      176        167          12   Itissalat Al-MAGHRIB
29571      132         15           8   Ci Telecom Autonomous system 
33776      124          7          11   Starcomms Nigeria Limited
29975      122        506          15   Vodacom
 5536      121          8          18   Internet Egypt Network
 5713      116        508          67   Telkom SA Ltd 

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     4248       3879         312   bellsouth.net, inc. 
 4323     3739       1054         399   Time Warner Telecom
 1785     1778        714         136   PaeTec Communications, Inc.
 4766     1775       7507         461   Korea Telecom (KIX)
 7018     1582       5838        1034   AT&T WorldNet Services
 8151     1580       2899         232   UniNet S.A. de C.V. 
20115     1518       1483         665   Charter Communications 
17488     1443        143         134   Hathway IP Over Cable Interne
 2386     1296        632         932   AT&T Data Communications Serv
 6478     1280        267         368   AT&T Worldnet Services 

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

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

  ASN   No of nets  Net Savings Description
 4323      3739        3340      Time Warner Telecom
 1785      1778        1642      PaeTec Communications, Inc.
 8151      1580        1348      UniNet S.A. de C.V. 
 4766      1775        1314      Korea Telecom (KIX)
17488      1443        1309      Hathway IP Over Cable Interne
 4755      1277        1129      TATA Communications formerly 
11492      1142        1128      Cable One 
22773      1121        1055      Cox Communications, Inc.
18566      1059        1049      Covad Communications 
 8452      1045        1038      TEDATA

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   12.39.159.0/24        7018       AT&T WorldNet Servic
32326   UNALLOCATED   12.40.49.0/24         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
41.223.92.0/22       36936     >>UNKNOWN<<
41.223.188.0/24      22351     Intelsat 
41.223.189.0/24      26452     Local Communications Networks
46.0.0.0/16          12654     RIPE NCC RIS Project
46.1.0.0/21          12654     RIPE NCC RIS Project
46.1.24.0/24         12654     RIPE NCC RIS Project
62.61.220.0/24       24974     Tachyon Europe BV - Wireless 

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      /11:65      /12:178     
/13:361     /14:640     /15:1224    /16:10751   /17:4981    /18:8536    
/19:17597   /20:21414   /21:21258   /22:27471   /23:27405   /24:158697  
/25:934     /26:1126    /27:566     /28:229     /29:11      /30:8       
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2779          4248      bellsouth.net, inc. 
 4323     2359          3739      Time Warner Telecom
 4766     1440          1775      Korea Telecom (KIX)
 1785     1245          1778      PaeTec Communications, Inc.
17488     1219          1443      Hathway IP Over Cable Interne
11492     1064          1142      Cable One 
18566     1040          1059      Covad Communications 
 7018      946          1582      AT&T WorldNet Services
 8452      945          1045      TEDATA
10620      922          1017      TVCABLE BOGOTA 

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

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

   2:1         4:14        8:233      12:2104     13:8        15:22     
  16:3        17:5        20:36       24:1266     32:49       34:2      
  38:619      40:99       41:1803     43:1        44:2        46:1      
  47:21       52:6        55:2        56:2        57:23       58:632    
  59:610      60:444      61:978      62:949      63:1999     64:3686   
  65:2365     66:4077     67:1767     68:1001     69:2799     70:615    
  71:156      72:1752     73:2        74:2000     75:188      76:353    
  77:840      78:576      79:383      80:943      81:813      82:472    
  83:440      84:542      85:1023     86:382      87:693      88:424    
  89:1506     90:56       91:2644     92:427      93:1163     94:1300   
  95:822      96:201      97:273      98:417      99:30      109:164    
 110:285     111:456     112:147     113:174     114:291     115:357    
 116:1085    117:589     118:361     119:800     120:133     121:700    
 122:1302    123:780     124:1056    125:1352    128:222     129:204    
 130:135     131:442     132:82      133:16      134:187     135:43     
 136:232     137:166     138:236     139:84      140:458     141:122    
 142:385     143:343     144:383     145:52      146:394     147:173    
 148:557     149:193     150:148     151:171     152:219     153:160    
 154:2       155:274     156:166     157:313     158:95      159:361    
 160:294     161:174     162:276     163:163     164:278     165:468    
 166:490     167:392     168:751     169:160     170:555     171:43     
 172:1       173:397     174:397     180:184     183:134     184:1      
 186:176     187:179     188:1340    189:647     190:3244    192:5739   
 193:4305    194:3351    195:2749    196:1171    198:3575    199:3380   
 200:5221    201:1396    202:7913    203:8287    204:3960    205:2154   
 206:2407    207:3027    208:3979    209:3430    210:2529    211:1149   
 212:1635    213:1619    214:244     215:57      216:4432    217:1348   
 218:474     219:419     220:1137    221:451     222:300    

End of report




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