[apops] Weekly Routing Table Report

Routing Table Analysis cscora at thyme.apnic.net
Fri Aug 16 06:04:59 EDT 2002


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 a graphical representation, please see http://www.apnic.net/stats/bgp.

If you have any comments please contact Philip Smith <pfs at cisco.com>.

Routing Table Report   20:00 +10GMT Fri 16 Aug, 2002

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

BGP routing table entries examined:                            113000
    Prefixes after maximum aggregation:                         73565
    Unique aggregates announced to Internet:                    54874
Total ASes present in the Internet Routing Table:               13487
Origin-only ASes present in the Internet Routing Table:         11673
Origin ASes announcing only one prefix:                          5207
Transit ASes present in the Internet Routing Table:              1814
Transit-only ASes present in the Internet Routing Table:           51
Average AS path length visible in the Internet Routing Table:     5.3
    Max AS path length visible:                                    21
Illegal AS announcements present in the Routing Table:              1
Non-routable prefixes present in the Routing Table:                 0
Prefixes being announced from the IANA Reserved Address blocks:    35
Number of addresses announced to Internet:                 1182751136
    Equivalent to 70 /8s, 127 /16s and 89 /24s
    Percentage of available address space announced:             31.9
    Percentage of allocated address space announced:             58.5
    Percentage of available address space allocated:             54.6
Total number of prefixes smaller than registry allocations:     45583

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

Prefixes being announced by APNIC Region ASes:                  18737
    Total APNIC prefixes after maximum aggregation:             11073
Prefixes being announced from the APNIC address blocks:         17396
    Unique aggregates announced from the APNIC address blocks:  10651
APNIC Region origin ASes present in the Internet Routing Table:  1583
APNIC Region origin ASes announcing only one prefix:              517
APNIC Region transit ASes present in the Internet Routing Table:  278
Average APNIC Region AS path length visible:                      5.2
    Max APNIC Region AS path length visible:                       11
Number of APNIC addresses announced to Internet:             92745312
    Equivalent to 5 /8s, 135 /16s and 46 /24s
    Percentage of available APNIC address space announced:       61.0

APNIC AS Blocks        4608 - 4864, 7467 - 7722, 9216 - 10239
                       17408 - 18431, 23552 - 24575
APNIC Address Blocks   61/8, 202/7, 210/7, 218/7 and 220/7

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

Prefixes being announced by ARIN Region ASes:                   75022
    Total ARIN prefixes after maximum aggregation:              47902
Prefixes being announced from the ARIN address blocks:          53679
    Unique aggregates announced from the ARIN address blocks:   18115
ARIN Region origin ASes present in the Internet Routing Table:   7915
ARIN Region origin ASes announcing only one prefix:              2561
ARIN Region transit ASes present in the Internet Routing Table:   779
Average ARIN Region AS path length visible:                       5.2
    Max ARIN Region AS path length visible:                        18
Number of ARIN addresses announced to Internet:             190832704
    Equivalent to 11 /8s, 95 /16s and 224 /24s
    Percentage of available ARIN address space announced:        66.9

ARIN AS Blocks         1 - 1876, 1902 - 2042, 2044 - 2046, 2048 - 2106
                       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 - 26623
ARIN Address Blocks    24/8, 63/8, 64/6, 68/7, 199/8, 200/8, 204/6,
                       208/7 and 216/8

RIPE Region Analysis Summary
----------------------------

Prefixes being announced by RIPE Region ASes:                   19241
    Total RIPE prefixes after maximum aggregation:              14590
Prefixes being announced from the RIPE address blocks:          15980
    Unique aggregates announced from the RIPE address blocks:   10513
RIPE Region origin ASes present in the Internet Routing Table:   3938
RIPE Region origin ASes announcing only one prefix:              2129
RIPE Region transit ASes present in the Internet Routing Table:   747
Average RIPE Region AS path length visible:                       5.8
    Max RIPE Region AS path length visible:                        21
Number of RIPE addresses announced to Internet:             113158144
    Equivalent to 6 /8s, 190 /16s and 168 /24s
    Percentage of available RIPE address space announced:        74.9

RIPE AS Blocks         1877 - 1901, 2043, 2047, 2107 - 2136, 2585 - 2614
                       2773 - 2822, 2830 - 2879, 3154 - 3353, 5377 - 5631
                       6656 - 6911, 8192 - 9215, 12288 - 13311, 15360 - 16383
                       20480 - 21503, 24576 - 25599
RIPE Address Blocks    62/8, 80/7, 193/8, 194/7, 212/7 and 217/8

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 1221     1214       1189         888   Telstra Pty Ltd
 4538      626       1312          28   China Education and Research 
  703      416        377         324   UUNET
 2907      362       1815         341   SINET Japan
 2764      358        358         329   connect.com.au pty ltd
 7474      318        292         214   Optus Communications Pty Ltd
 4134      299       2183         102   Data Communications Bureau
 4755      286        143          75   Videsh Sanchar Nigam Ltd. Aut
17557      268         20          95   Pakistan Telecom
 4766      249       1506         156   Korea Internet Exchange for "
 4814      231         79          14   China Telecom (Group)
17676      187       2914          34   XTAGE CORPORATION
 9583      183         32           5   Satyam Infoway Ltd.,
 9443      171         45          68   Primus Telecommunications
 9768      144        385          74   Korea Telecom
 7657      132         22          91   The Internet Group Limited
 9800      121        187          23   CHINA UNICOM
 4713      114       1009         105   NTT Communications Corporatio
 4739      113         56         104   Commerical Internet eXchange 
 4795      103         19          54   INDOSATNET-ASN

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      896       2430         753   UUNET - Commercial IP service
 3301      396        923         345   TeliaNet Sweden
 5515      320        783         180   Sonera Solution Autonomous Sy
 3215      291        641         180   France Telecom Transpac
 3320      246       1964         212   Deutsche Telekom AG
  680      237       2150         234   DFN-IP service G-WiN
 5400      211         85         100   BT Ignite European Backbone
 1257      207        446         202   SWIPnet Swedish IP Network
  719      182        306         128   LANLINK autonomous system
  786      177       1873         177   The JANET IP Service
 8708      145         41         141   Romania Data Systems S.A.
 3303      142        548         141   Swisscom Ltd
 2856      126        786         116   BTnet UK Regional network
12302      126         18          33   MobiFon S.A.
 3246      112        317         107   Song Networks
 5511      110        192          88   France Telecom
 3233      106         10           9   RNC - Romanian Natioanal R&D 
 3269      106        658          63   TELECOM ITALIA
 2874      102         85          39   Global One Services AB
 8220      100        166          96   COLT Internet - International

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  701     1785       9126        1358   UUNET Technologies, Inc. 
 7018     1310       7435         936   AT&T 
 3908     1014       1659         494   Supernet, Inc. 
 1239      821       3224         645   Sprint 
  852      724       1175         450   Telus Advanced Communications
    1      671       8039         432   GENUITY 
 7843      644        371         258   Adelphia Corp. 
 7132      595        663         137   Southwestern Bell Internet Se
 4323      544        450         172   Time Warner Communications, I
  690      523         76         329   Merit Network 
 7046      512        882         315   UUNET Technologies, Inc. 
  209      507       2057         343   Qwest 
 2548      465       1162         277   Business Internet, Inc. 
 3549      435        808         312   Global Crossing 
 6197      381        611          37   BellSouth Network Solutions, 
15290      377        297         192   AT&T Canada IES 
 2914      362       2074         362   Verio, Inc. 
 6347      350        370          76   SAVVIS Communications Corpora
 4355      337        279          72   EarthLink, Inc. 
 6198      317        158         203   BellSouth Network Solutions, 

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

  ASN   No of nets  Net Savings Description
 4538       626         598      China Education and Research 
 3908      1014         520      Supernet, Inc. 
 7132       595         458      Southwestern Bell Internet Se
 7843       644         386      Adelphia Corp. 
 7018      1310         374      AT&T 
 4323       544         372      Time Warner Communications, I
 6197       381         344      BellSouth Network Solutions, 
 1221      1214         326      Telstra Pty Ltd
 4151       303         287      USDA 
  852       724         274      Telus Advanced Communications
 6347       350         274      SAVVIS Communications Corpora
 4355       337         265      EarthLink, Inc. 
18566       245         241      Covad Communications 
    1       671         239      GENUITY 
 4814       231         217      China Telecom (Group)
 4755       286         211      Videsh Sanchar Nigam Ltd. Aut
 1580       212         200      ANOSCEUR 
 7046       512         197      UUNET Technologies, Inc. 
 4134       299         197      Data Communications Bureau
  690       523         194      Merit Network 

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

Bad AS  Designation  Network              Transit AS  Description
 5757   UNALLOCATED   207.19.224.0/24        701       UUNET Technologies, 

Advertised Unregistered Addresses
---------------------------------

Network            Origin AS  Description
39.0.0.0/8            4554     Exchange Point Blocks 
132.0.0.0/10           568     DISO-UNRRA 
134.137.0.0/16        7170     AT&T Government Markets 
135.0.0.0/13         10455     Lucent Technologies 
137.0.0.0/13           568     DISO-UNRRA 
138.94.0.0/16            1     GENUITY 
158.0.0.0/13           568     DISO-UNRRA 
164.233.0.0/16        6020     DISA NETWORK SERVICES 
192.5.154.0/24       16588     Spider Web Hosting Solutions 
192.44.0.0/19          702     UUNET - Commercial IP service
192.58.92.0/24       19548     Adelphia Business Solutions 
192.72.0.0/18         4780     Digital United Inc.
192.72.0.0/16         4780     Digital United Inc.
192.83.16.0/20        5515     Sonera Solution Autonomous Sy
192.83.32.0/19        5515     Sonera Solution Autonomous Sy
192.83.96.0/22        5515     Sonera Solution Autonomous Sy
192.83.100.0/24       5515     Sonera Solution Autonomous Sy
192.91.198.0/24       2568     CTS Network Services 
192.119.135.0/24       270     NASA 
192.135.50.0/24       7018     AT&T 
192.136.79.0/24        719     LANLINK autonomous system
192.136.86.0/24        719     LANLINK autonomous system
192.136.87.0/24        719     LANLINK autonomous system
192.136.88.0/24        719     LANLINK autonomous system
192.136.136.0/24      7046     UUNET Technologies, Inc. 
192.136.136.0/22       568     DISO-UNRRA 
192.139.62.0/24       6539     GT Group Telecom Services Cor
192.140.0.0/16        5511     France Telecom
192.153.136.0/21       568     DISO-UNRRA 
192.156.0.0/19         568     DISO-UNRRA 
192.156.164.0/24     19548     Adelphia Business Solutions 
192.172.0.0/19         568     DISO-UNRRA 
192.208.29.0/24       3908     Supernet, Inc. 
192.208.30.0/23       3908     Supernet, Inc. 
192.243.36.0/23       7168     Northwest Link 

Number of prefixes announced per prefix length (Global)
-------------------------------------------------------

 /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
 /7:0        /8:18       /9:6       /10:7       /11:12      /12:37      
/13:85      /14:233     /15:420     /16:7273    /17:1467    /18:2679    
/19:7777    /20:7541    /21:5215    /22:7925    /23:9563    /24:62291   
/25:152     /26:139     /27:56      /28:54      /29:31      /30:1       
/31:0       /32:18      

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

  ASN   No of nets  Total ann.   Description
 3908      600          1014      Supernet, Inc. 
  702      546           896      UUNET - Commercial IP service
  701      490          1785      UUNET Technologies, Inc. 
  690      469           523      Merit Network 
 7843      445           644      Adelphia Corp. 
 7018      379          1310      AT&T 
 6197      266           381      BellSouth Network Solutions, 
 6198      244           317      BellSouth Network Solutions, 
18566      241           245      Covad Communications 
 3301      234           396      TeliaNet Sweden
 3215      223           291      France Telecom Transpac
 1239      222           821      Sprint 
 7066      204           301      Virginia Polytechnic Institut
 1580      199           212      ANOSCEUR 
 4355      194           337      EarthLink, Inc. 
 7046      191           512      UUNET Technologies, Inc. 
  209      189           507      Qwest 
 4323      185           544      Time Warner Communications, I
 5400      185           211      BT Ignite European Backbone
11492      185           189      Cable One 

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

   3:1         4:3        12:539      13:10       15:2        17:6      
  20:4        24:719      25:1        32:41       38:9        40:6      
  44:1        57:14       61:327      62:236      63:1861     64:1231   
  65:1439     66:993      67:97       68:85       80:262      81:46     
 128:68      129:123     130:21      131:54      132:11      133:2      
 134:107     135:9       136:426     137:96      138:150     139:63     
 140:150     141:46      142:61      143:48      144:142     145:18     
 146:236     147:143     148:238     149:79      150:40      151:57     
 152:268     153:36      154:11      155:115     156:71      157:108    
 158:67      159:134     160:20      161:73      162:123     163:79     
 164:80      165:128     166:107     167:263     168:284     169:60     
 170:195     171:3       192:5383    193:2345    194:2066    195:805    
 196:415     198:3570    199:3133    200:2593    202:3334    203:4714   
 204:3228    205:2143    206:2447    207:2469    208:2599    209:2694   
 210:602     211:244     212:863     213:713     214:8       215:19     
 216:2827    217:497     218:33      219:1      

End of report
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