Weekly Routing Table Report

Routing Table Analysis cscora at thyme.apnic.net
Fri Aug 9 06:04:56 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 09 Aug, 2002

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

BGP routing table entries examined:                            115042
    Prefixes after maximum aggregation:                         73968
    Unique aggregates announced to Internet:                    54874
Total ASes present in the Internet Routing Table:               13521
Origin-only ASes present in the Internet Routing Table:         11699
Origin ASes announcing only one prefix:                          5192
Transit ASes present in the Internet Routing Table:              1822
Transit-only ASes present in the Internet Routing Table:           55
Average AS path length visible in the Internet Routing Table:     5.4
    Max AS path length visible:                                    23
Illegal AS announcements present in the Routing Table:              3
Non-routable prefixes present in the Routing Table:                 0
Prefixes being announced from the IANA Reserved Address blocks:    33
Number of addresses announced to Internet:                 1196649525
    Equivalent to 71 /8s, 83 /16s and 108 /24s
    Percentage of available address space announced:             32.3
    Percentage of allocated address space announced:             59.2
    Percentage of available address space allocated:             54.6
Total number of prefixes smaller than registry allocations:     46871

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

Prefixes being announced by APNIC Region ASes:                  18951
    Total APNIC prefixes after maximum aggregation:             11227
Prefixes being announced from the APNIC address blocks:         17461
    Unique aggregates announced from the APNIC address blocks:  10634
APNIC Region origin ASes present in the Internet Routing Table:  1586
APNIC Region origin ASes announcing only one prefix:              515
APNIC Region transit ASes present in the Internet Routing Table:  274
Average APNIC Region AS path length visible:                      5.3
    Max APNIC Region AS path length visible:                       12
Number of APNIC addresses announced to Internet:             91033056
    Equivalent to 5 /8s, 109 /16s and 13 /24s
    Percentage of available APNIC address space announced:       59.9

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:                   76668
    Total ARIN prefixes after maximum aggregation:              48096
Prefixes being announced from the ARIN address blocks:          54172
    Unique aggregates announced from the ARIN address blocks:   18183
ARIN Region origin ASes present in the Internet Routing Table:   7948
ARIN Region origin ASes announcing only one prefix:              2557
ARIN Region transit ASes present in the Internet Routing Table:   794
Average ARIN Region AS path length visible:                       5.3
    Max ARIN Region AS path length visible:                        17
Number of ARIN addresses announced to Internet:             190387280
    Equivalent to 11 /8s, 89 /16s and 20 /24s
    Percentage of available ARIN address space announced:        66.8

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:                   19421
    Total RIPE prefixes after maximum aggregation:              14645
Prefixes being announced from the RIPE address blocks:          16086
    Unique aggregates announced from the RIPE address blocks:   10527
RIPE Region origin ASes present in the Internet Routing Table:   3934
RIPE Region origin ASes announcing only one prefix:              2120
RIPE Region transit ASes present in the Internet Routing Table:   742
Average RIPE Region AS path length visible:                       5.9
    Max RIPE Region AS path length visible:                        23
Number of RIPE addresses announced to Internet:             113219584
    Equivalent to 6 /8s, 191 /16s and 152 /24s
    Percentage of available RIPE address space announced:        75.0

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     1262       1194         898   Telstra Pty Ltd
 4538      561       1279          27   China Education and Research 
  703      412        377         324   UUNET
 2907      366       1848         344   SINET Japan
 2764      360        358         331   connect.com.au pty ltd
 7474      320        296         213   Optus Communications Pty Ltd
17557      298         20          95   Pakistan Telecom
 4134      295       2182         104   Data Communications Bureau
 4755      279        110          73   Videsh Sanchar Nigam Ltd. Aut
 4766      249       1506         156   Korea Internet Exchange for "
 4814      220         79          14   China Telecom (Group)
 9583      180         32           5   Satyam Infoway Ltd.,
17676      180       2802          32   XTAGE CORPORATION
 9443      169         45          68   Primus Telecommunications
 7539      147        189         142   TANet2, sponsored by NSC, TAI
 9768      144        385          74   Korea Telecom
 7657      132         22          91   The Internet Group Limited
 9800      125        191          18   CHINA UNICOM
 4713      115       1009         106   NTT Communications Corporatio
 4621      114         11          62   UNINET-TH

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      906       2434         757   UUNET - Commercial IP service
 3301      396        923         346   TeliaNet Sweden
 5515      320        783         180   Sonera Solution Autonomous Sy
 3215      289        641         178   France Telecom Transpac
 3320      269       1965         208   Deutsche Telekom AG
  680      237       2150         234   DFN-IP service G-WiN
 5400      210         85          98   BT Ignite European Backbone
 1257      208        446         203   SWIPnet Swedish IP Network
  719      182        306         128   LANLINK autonomous system
  786      177       1873         177   The JANET IP Service
 3303      142        548         141   Swisscom Ltd
 8708      142         24         139   Romania Data Systems S.A.
 2856      128        787         118   BTnet UK Regional network
12302      124         18          31   MobiFon S.A.
 3246      112        317         107   Song Networks
 5511      110        192          88   France Telecom
 3233      107         10           9   RNC - Romanian Natioanal R&D 
 3269      106        658          63   TELECOM ITALIA
 2874      101         85          38   Global One Services AB
 2830       95        243          75   UUNET Dual-Homed customers

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  701     1802       9145        1367   UUNET Technologies, Inc. 
 7018     1317       7431         938   AT&T 
 3908     1010       1659         498   Supernet, Inc. 
 1239      812       3248         647   Sprint 
  852      754       1175         451   Telus Advanced Communications
    1      711       8052         446   GENUITY 
 4323      639        442         263   Time Warner Communications, I
 7843      630        367         225   Adelphia Corp. 
 7132      593        663         137   Southwestern Bell Internet Se
  690      521         75         332   Merit Network 
 7046      514        886         316   UUNET Technologies, Inc. 
  209      505       2057         343   Qwest 
 7066      486        203         254   Virginia Polytechnic Institut
 7029      451        164          54   Alltel Information Services, 
 3549      438        824         314   Global Crossing 
 6197      379        611          37   BellSouth Network Solutions, 
15290      378        297         194   AT&T Canada IES 
 2914      365       2077         365   Verio, Inc. 
 6347      348        370          75   SAVVIS Communications Corpora
 4355      334        278          71   EarthLink, Inc. 

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

  ASN   No of nets  Net Savings Description
 4538       561         534      China Education and Research 
 3908      1010         512      Supernet, Inc. 
 7132       593         456      Southwestern Bell Internet Se
 7843       630         405      Adelphia Corp. 
 7029       451         397      Alltel Information Services, 
 7018      1317         379      AT&T 
 4323       639         376      Time Warner Communications, I
 1221      1262         364      Telstra Pty Ltd
 6197       379         342      BellSouth Network Solutions, 
  852       754         303      Telus Advanced Communications
 1657       279         277      University of Louisville 
 4151       290         274      USDA 
 6347       348         273      SAVVIS Communications Corpora
    1       711         265      GENUITY 
 4355       334         263      EarthLink, Inc. 
18566       240         236      Covad Communications 
 7066       486         232      Virginia Polytechnic Institut
  376       329         224      Reseau Interordinateurs Scien
 7303       267         207      Telecom Argentina Stet-France
 4755       279         206      Videsh Sanchar Nigam Ltd. Aut

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

Bad AS  Designation  Network              Transit AS  Description
26705   UNALLOCATED   12.111.19.0/24         701       UUNET Technologies, 
64511   RESERVED      147.73.0.0/16         5050       Pittsburgh Supercomp
 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 
192.44.0.0/19          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
192.139.62.0/24       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 
192.195.253.0/24       237     Merit Network 
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        /8:19       /9:8       /10:7       /11:12      /12:37      
/13:84      /14:231     /15:418     /16:7293    /17:1472    /18:2692    
/19:7790    /20:7570    /21:5279    /22:7993    /23:9696    /24:63613   
/25:201     /26:178     /27:100     /28:95      /29:70      /30:112     
/31:0       /32:72      

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

  ASN   No of nets  Total ann.   Description
 3908      595          1010      Supernet, Inc. 
  702      554           906      UUNET - Commercial IP service
  701      487          1802      UUNET Technologies, Inc. 
  690      467           521      Merit Network 
 7843      429           630      Adelphia Corp. 
 7066      389           486      Virginia Polytechnic Institut
 7018      379          1317      AT&T 
 7029      356           451      Alltel Information Services, 
 1657      278           279      University of Louisville 
 6197      264           379      BellSouth Network Solutions, 
 6198      243           316      BellSouth Network Solutions, 
18566      236           240      Covad Communications 
 3301      234           396      TeliaNet Sweden
 3215      221           289      France Telecom Transpac
 1239      214           812      Sprint 
    1      208           711      GENUITY 
 1580      202           215      ANOSCEUR 
 3320      201           269      Deutsche Telekom AG
 4355      192           334      EarthLink, Inc. 
 7046      188           514      UUNET Technologies, Inc. 

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

   3:1         4:3        12:535      13:10       15:2        17:6      
  20:3        24:709      25:1        32:41       38:9        40:6      
  44:1        57:14       61:324      62:246      63:1857     64:1234   
  65:1426     66:988      67:97       68:81       80:260      81:43     
 128:67      129:151     130:21      131:55      132:11      133:2      
 134:124     135:10      136:500     137:96      138:151     139:72     
 140:174     141:46      142:70      143:50      144:139     145:17     
 146:240     147:141     148:244     149:79      150:39      151:69     
 152:271     153:36      154:11      155:114     156:70      157:116    
 158:67      159:134     160:22      161:76      162:213     163:87     
 164:263     165:126     166:217     167:253     168:294     169:60     
 170:233     171:3       192:5466    193:2374    194:2075    195:802    
 196:415     198:3676    199:3158    200:2725    202:3333    203:4741   
 204:3259    205:2187    206:2544    207:2565    208:2612    209:2705   
 210:599     211:238     212:904     213:716     214:9       215:19     
 216:2854    217:475     218:31      219:1      

End of report



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