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   AS6447 BGP Routing Table Analysis Report
   
  BGP data obtained from AS6447
Report last updated at Sun Jul 13 06:00:00 2025 (UTC+1000).		  

Active BGP entries (FIB)

Table Size Metrics

The trend of the size of the BGP Forwarding Table (FIB). Also the underlying BGP Routing Table (RIB). The RIB/FIB ratio is a function of the number of BGP peering sessions at the sample point. Some RIB entries are marked as unusable as an outcome of protocol operation, and these categories of unusable advertisements are tracked.

FIB / RIB Table Reports (plots)Data Sets(txt)
Active BGP entries (FIB)1039832   Change in FIB Size-24   Change (%)-0.002
    All BGP entries (RIB)22296029
    RIB/FIB ratio (22296029/1039832)21.4420
      Valid entries22296029
      Suppressed RIB entries0
      Damped entries0
      History entries0

Address Span Metrics

The total span of address space advertised in the BGP table, and the relationship of this value to the number and size of address prefix objects in the table.

Address Space Reports (plots)Data Sets(txt)
Total address space advertised (/32 equiv)3108014082
    Total address space advertised (prefix length)0.46665411
    Percentage of IPv4 space advertised (3108014082/4294967295)72.364092
    Total address space advertised - corrected to 19 /8s(data)
Average address span 2989
    Average address span (as prefix size)20.4550
Average prefix length22.9429

More Specifics

The characteristics of more specific advertisements - where an advertisement is associated with a sub-span of address space of another advertisement. The metrics also look at the degree of similarity of the AS paths of the specific advertisements to the encompassing aggregate.

More-Specific Advertisement Reports (plots)Data Sets(txt)  Percentage Reports (plots)Data Sets(txt)
Entries advertising more specific prefixes of aggregates553445       Specifics as % of FIB entries (553445/1039832)53.2245
    Specifics as % of address span (1123561955/3108014082)36.1505    
    Specifics where AS prepended Path matches aggregate226573         AS-P_Path-Match % (226573/553445)40.94
    AS Path matches aggregate239841         AS-Path-Match % (239841/553445)43.3360
    AS Origin matches aggregate419654         AS-Origin-Match % (419654/553445)75.8258
    Root Prefixes486387
Root Prefix Tree Depth(data)
      Root Prefixes with depth 0427809
      Root Prefixes with depth 146786
      Root Prefixes with depth 29565
      Root Prefixes with depth 31701
      Root Prefixes with depth 4417
      Root Prefixes with depth 580
      Root Prefixes with depth 622
      Root Prefixes with depth 76
      Root Prefixes with depth 81

AS Numbers

The time trend of the number of unique AS numbers advertised within the BGP table. The associated metrics characterise AS's into origin only, transit only, or mixed (origin and transit), and also look at the trends of advertised address space as related to the number of ASes.

AS Reports (plots)Data Sets(txt)  Additional Reports (plots)Data Sets(txt)
Unique ASes77578       ASes visible in only one AS path44926
    Origin only ASes65027         Origin ASs announced via a single AS path43744
    Transit only ASes668       Originating AS ATOM count76910
    Mixed ASes11883         Originating AS ATOM compression0.0740
    Multi-Origin Prefixes6090    
    ASes originating a single prefix26572    
    Average FIB entries per Origin AS13.5201         Maximum entries for an origin AS (AS58224)1163
    Average address range span for an origin AS40411.0529         Maximum address range for an origin AS (AS749)227888384

AS Paths

The time trend of the number of unique AS Paths advertised within the BGP table. The associated metrics look at trends of average path length, and BGP table entries per path.

AS Reports (plots)Data Sets(txt)  Additional Reports (plots)Data Sets(txt)
Unique AS Paths2651490       Unique AS prepended Paths2857710
AS Paths used in FIB137631       AS Paths using prepending756424
    AS paths associated with a single FIB entry67218       AS Paths using private ASs200
    Average AS path length3.8890       Number of Prefixes with Selected AS Prepending Paths112742
      Maximum AS Path length17       Number of Prefixes with AS Prepending Paths112742
    Average address weighted AS path length4.8355       Maximum prepended AS Path length104
    Average entries per AS Path0.3922       Average entries per FIB AS Path7.5552
    AS Paths per origin AS34.4752       FIB AS Paths per origin AS1.7895
      AS PATH ATOM compression0.1324    

Prefix Length Distributions

The time trend of the distribution of BGP Table entries by address prefix length.

Prefix Length Reports (plots)Data Sets(txt)  Percentage Reports (plots)Data Sets(txt)
Prefix Count(data)   % Prefix distribution(data)
    Prefix count /816       % Prefix /80.00
    Prefix count /914       % Prefix /90.00
    Prefix count /1041       % Prefix /100.00
    Prefix count /1192       % Prefix /110.01
    Prefix count /12298       % Prefix /120.03
    Prefix count /13580       % Prefix /130.06
    Prefix count /141213       % Prefix /140.12
    Prefix count /152182       % Prefix /150.21
    Prefix count /1613879       % Prefix /161.33
    Prefix count /178418       % Prefix /170.81
    Prefix count /1814007       % Prefix /181.35
    Prefix count /1925249       % Prefix /192.43
    Prefix count /2045672       % Prefix /204.39
    Prefix count /2154473       % Prefix /215.24
    Prefix count /22115076       % Prefix /2211.07
    Prefix count /23111304       % Prefix /2310.70
    Prefix count /24644232       % Prefix /2461.96
    Prefix count /25406       % Prefix /250.04
    Prefix count /26581       % Prefix /260.06
    Prefix count /271043       % Prefix /270.10
    Prefix count /2872       % Prefix /280.01
    Prefix count /29100       % Prefix /290.01
    Prefix count /3016       % Prefix /300.00
    Prefix count /311       % Prefix /310.00
    Prefix count /32867       % Prefix /320.08

Root Prefix Length Distributions

The time trend of the distribution of Root BGP Table entries by address prefix length.

Root Prefix Length Reports (plots)Data Sets(txt)  Percentage Reports (plots)Data Sets(txt)
Root Prefix Count(data)   % Prefix distribution(data)
    Prefix count /816       % Prefix /80.00
    Prefix count /99       % Prefix /90.00
    Prefix count /1041       % Prefix /100.01
    Prefix count /1185       % Prefix /110.02
    Prefix count /12263       % Prefix /120.05
    Prefix count /13488       % Prefix /130.10
    Prefix count /141031       % Prefix /140.21
    Prefix count /151653       % Prefix /150.34
    Prefix count /1611053       % Prefix /162.27
    Prefix count /174471       % Prefix /170.92
    Prefix count /186972       % Prefix /181.43
    Prefix count /1914796       % Prefix /193.04
    Prefix count /2020293       % Prefix /204.17
    Prefix count /2122469       % Prefix /214.62
    Prefix count /2259476       % Prefix /2212.23
    Prefix count /2343235       % Prefix /238.89
    Prefix count /24300022       % Prefix /2461.68
    Prefix count /256       % Prefix /250.00
    Prefix count /263       % Prefix /260.00
    Prefix count /271       % Prefix /270.00
    Prefix count /282       % Prefix /280.00
    Prefix count /290       % Prefix /290.00
    Prefix count /300       % Prefix /300.00
    Prefix count /310       % Prefix /310.00
    Prefix count /322       % Prefix /320.00

AS Diameter Reports

The time trend of the reacahbility of addresses and AS's using AS distance from the sample point to the origin AS as the diameter metric.

AS Diameter Reports (plots)Data Sets(txt)  Percentage Reports (plots)Data Sets(txt)
Addresses by AS distance(data)   Address percentage by AS distance(data)
    Addresses at AS distance 00       % Addresses at AS distance 00.0
    Addresses at AS distance 1159545980       % Addresses at AS distance 13.8
    Addresses at AS distance 22103180900       % Addresses at AS distance 249.7
    Addresses at AS distance 31549392199       % Addresses at AS distance 336.6
    Addresses at AS distance 4339294304       % Addresses at AS distance 48.0
    Addresses at AS distance 562135229       % Addresses at AS distance 51.5
    Addresses at AS distance 610973601       % Addresses at AS distance 60.3
    Addresses at AS distance 76991104       % Addresses at AS distance 70.2
    Addresses at AS distance 857856       % Addresses at AS distance 80.0
    Addresses at AS distance 92816       % Addresses at AS distance 90.0
    Addresses at AS distance 10512       % Addresses at AS distance 100.0
    Addresses at AS distance 11256       % Addresses at AS distance 110.0
    Addresses at AS distance 120       % Addresses at AS distance 120.0
    Addresses at AS distance 130       % Addresses at AS distance 130.0
    Addresses at AS distance 141280       % Addresses at AS distance 140.0
    Addresses at AS distance 150       % Addresses at AS distance 150.0
    Addresses at AS distance 160       % Addresses at AS distance 160.0
     
Cumulative Address by AS distance(data)   Cumulative % Address by AS distance(data)
    Addresses reachable within 0 AS hops0       % Addresses reachable within 0 AS hops0
    Addresses reachable within 1 AS hops159545980       % Addresses reachable within 1 AS hops3
    Addresses reachable within 2 AS hops2262726880       % Addresses reachable within 2 AS hops53
    Addresses reachable within 3 AS hops3812119079       % Addresses reachable within 3 AS hops90
    Addresses reachable within 4 AS hops4151413383       % Addresses reachable within 4 AS hops98
    Addresses reachable within 5 AS hops4213548612       % Addresses reachable within 5 AS hops99
    Addresses reachable within 6 AS hops4224522213       % Addresses reachable within 6 AS hops99
    Addresses reachable within 7 AS hops4231513317       % Addresses reachable within 7 AS hops99
    Addresses reachable within 8 AS hops4231571173       % Addresses reachable within 8 AS hops99
    Addresses reachable within 9 AS hops4231573989       % Addresses reachable within 9 AS hops99
    Addresses reachable within 10 AS hops4231574501       % Addresses reachable within 10 AS hops99
    Addresses reachable within 11 AS hops4231574757       % Addresses reachable within 11 AS hops99
    Addresses reachable within 12 AS hops4231574757       % Addresses reachable within 12 AS hops99
    Addresses reachable within 13 AS hops4231574757       % Addresses reachable within 13 AS hops99
    Addresses reachable within 14 AS hops4231576037       % Addresses reachable within 14 AS hops100
    Addresses reachable within 15 AS hops4231576037       % Addresses reachable within 15 AS hops100
    Addresses reachable within 16 AS hops4231576037       % Addresses reachable within 16 AS hops100
     
ASes by AS distance(data)   % ASes by AS hops(data)
    ASes reachable at 0 AS hops1       % ASes reachable at 0 AS hops0
    ASes reachable at 1 AS hops26       % ASes reachable at 1 AS hops0
    ASes reachable at 2 AS hops15420       % ASes reachable at 2 AS hops19
    ASes reachable at 3 AS hops46433       % ASes reachable at 3 AS hops59
    ASes reachable at 4 AS hops12560       % ASes reachable at 4 AS hops16
    ASes reachable at 5 AS hops2397       % ASes reachable at 5 AS hops3
    ASes reachable at 6 AS hops543       % ASes reachable at 6 AS hops0
    ASes reachable at 7 AS hops160       % ASes reachable at 7 AS hops0
    ASes reachable at 8 AS hops18       % ASes reachable at 8 AS hops0
    ASes reachable at 9 AS hops2       % ASes reachable at 9 AS hops0
    ASes reachable at 10 AS hops2       % ASes reachable at 10 AS hops0
    ASes reachable at 11 AS hops4       % ASes reachable at 11 AS hops0
    ASes reachable at 12 AS hops4       % ASes reachable at 12 AS hops0
    ASes reachable at 13 AS hops4       % ASes reachable at 13 AS hops0
    ASes reachable at 14 AS hops4       % ASes reachable at 14 AS hops0
    ASes reachable at 15 AS hops0       % ASes reachable at 15 AS hops0
    ASes reachable at 16 AS hops0       % ASes reachable at 16 AS hops0
     
Cumulative ASes by AS hops(data)   Cumulative % ASes by AS hops(data)
    ASes reachable by 0 AS hops1       Cumulative % ASes by AS hops 00.0
    ASes reachable by 1 AS hops27       Cumulative % ASes by AS hops 10.0
    ASes reachable by 2 AS hops15447       Cumulative % ASes by AS hops 219.9
    ASes reachable by 3 AS hops61880       Cumulative % ASes by AS hops 379.8
    ASes reachable by 4 AS hops74440       Cumulative % ASes by AS hops 496.0
    ASes reachable by 5 AS hops76837       Cumulative % ASes by AS hops 599.0
    ASes reachable by 6 AS hops77380       Cumulative % ASes by AS hops 699.7
    ASes reachable by 7 AS hops77540       Cumulative % ASes by AS hops 7100.0
    ASes reachable by 8 AS hops77558       Cumulative % ASes by AS hops 8100.0
    ASes reachable by 9 AS hops77560       Cumulative % ASes by AS hops 9100.0
    ASes reachable by 10 AS hops77562       Cumulative % ASes by AS hops 10100.0
    ASes reachable by 11 AS hops77566       Cumulative % ASes by AS hops 11100.0
    ASes reachable by 12 AS hops77570       Cumulative % ASes by AS hops 12100.0
    ASes reachable by 13 AS hops77574       Cumulative % ASes by AS hops 13100.0
    ASes reachable by 14 AS hops77578       Cumulative % ASes by AS hops 14100.0
    ASes reachable by 15 AS hops77578       Cumulative % ASes by AS hops 15100.0
    ASes reachable by 16 AS hops77578       Cumulative % ASes by AS hops 16100.0

AS Announcement Reports

The time trend of total span of address space advertised by ASes, using truncated prefix length as the span metric.

AS Announcements ReportsData Sets(txt)  Percentage ReportsData
Originating Addresses AS Count(data)   Originating Addresses % AS Count(data)
    AS's announcing span of /42       % AS's announcing span of /40.0000
    AS's announcing span of /55       % AS's announcing span of /50.0001
    AS's announcing span of /611       % AS's announcing span of /60.0001
    AS's announcing span of /720       % AS's announcing span of /70.0003
    AS's announcing span of /844       % AS's announcing span of /80.0006
    AS's announcing span of /974       % AS's announcing span of /90.0010
    AS's announcing span of /10104       % AS's announcing span of /100.0014
    AS's announcing span of /11172       % AS's announcing span of /110.0022
    AS's announcing span of /12246       % AS's announcing span of /120.0032
    AS's announcing span of /13402       % AS's announcing span of /130.0052
    AS's announcing span of /14840       % AS's announcing span of /140.0110
    AS's announcing span of /151644       % AS's announcing span of /150.0215
    AS's announcing span of /161812       % AS's announcing span of /160.0236
    AS's announcing span of /172446       % AS's announcing span of /170.0319
    AS's announcing span of /183777       % AS's announcing span of /180.0493
    AS's announcing span of /195152       % AS's announcing span of /190.0672
    AS's announcing span of /207811       % AS's announcing span of /200.1019
    AS's announcing span of /2110315       % AS's announcing span of /210.1346
    AS's announcing span of /2212643       % AS's announcing span of /220.1650
    AS's announcing span of /239958       % AS's announcing span of /230.1300
    AS's announcing span of /2419135       % AS's announcing span of /240.2497
    AS's announcing span of /251       % AS's announcing span of /250.0000
    AS's announcing span of /263       % AS's announcing span of /260.0000
    AS's announcing span of /270       % AS's announcing span of /270.0000
    AS's announcing span of /283       % AS's announcing span of /280.0000
    AS's announcing span of /291       % AS's announcing span of /290.0000
    AS's announcing span of /301       % AS's announcing span of /300.0000
    AS's announcing span of /310       % AS's announcing span of /310.0000
    AS's announcing span of /320       % AS's announcing span of /320.0000

AS Connectivity Reports

This set of reports lists all visible AS's using a number of ordering criteria. The reports order AS's by the total span of addresses originated by an AS, the total span of addresses reachable via an AS, and the totspan of originating plus transit addresses via each AS. Each AS in an AS path has an adjacent AS closer to the sample point, and an adjacent AS further from the sample point. The number of such pairwise adjacencies is reported for each AS. The average AS Connectivity Degree is the average number of adjacent AS's for an AS.

AS Connectivity ReportData
AS Adjacency Count179973
Average AS Connectivity Degree (359946/77578)4.6398
Average AS Connectivity IN:OUT Degree0.2666
AS Names
AS's ordered by Originating Address
AS's ordered by Transit Address
AS's ordered by Originating + Transit Address
AS's ordered by AS Adjacency
AS's ordered by Downstream AS Adjacency
AS's ordered by Upstream AS Adjacency
AS Adjacency
Inconsistent Origin AS Prefixes

Aggregation Reports

This set of reports lists all potential aggregation of a number of specific routes into an aggregate route. The aggregation criteria include a match of the original AS path, which may include prepended AS's, a match of the reduced AS Path, and a match on the Origin AS only. As this view is taken from a single sample point, this list is not definitive, and the report will propose potential aggregation actions which may not be feasible for the Origin AS. The report also applies a prefix length filter to all prefixes, accepting only those prefixes which pass the following ruleset:

Aggregation possibilities are identified within this filtered prefix set.

Route Aggregation ReportsData
Aggregation Potential Summary(data)
Aggregation Potential Summary(data)
    Aggregation using prepended AS Path593092Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Path583495Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Origin389242Report (sort by %reduction)Report (sort by reduction)BGP Table
    Maximal Aggregation389287Report (sort by %reduction)Report (sort by reduction)BGP Table

BGP Table
BGP Table
Table Summary Report

BGP Report

BGP data obtained from the boundary of AS6447

Report last updated at Sun Jul 13 06:00:00 2025 (UTC+1000).

Data prior to 11 April 97 interpreted from data gathered by Erik-Jan Bos, SURFnet.

BGP table analyser written and maintained by Geoff Huston.

Footnote