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   AS6447 BGP Routing Table Analysis Report
   
  BGP data obtained from AS6447
Report last updated at Sat Sep 13 02:00:00 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)1052001   Change in FIB Size38   Change (%)0.004
    All BGP entries (RIB)20579396
    RIB/FIB ratio (20579396/1052001)19.5621
      Valid entries20579396
      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)3109190845
    Total address space advertised (prefix length)0.46610797
    Percentage of IPv4 space advertised (3109190845/4294967295)72.391491
    Total address space advertised - corrected to 19 /8s(data)
Average address span 2956
    Average address span (as prefix size)20.4711
Average prefix length22.9482

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 aggregates557911       Specifics as % of FIB entries (557911/1052001)53.0333
    Specifics as % of address span (1132520222/3109190845)36.4249    
    Specifics where AS prepended Path matches aggregate235807         AS-P_Path-Match % (235807/557911)42.27
    AS Path matches aggregate250291         AS-Path-Match % (250291/557911)44.8622
    AS Origin matches aggregate424315         AS-Origin-Match % (424315/557911)76.0542
    Root Prefixes494090
Root Prefix Tree Depth(data)
      Root Prefixes with depth 0435265
      Root Prefixes with depth 147016
      Root Prefixes with depth 29570
      Root Prefixes with depth 31697
      Root Prefixes with depth 4430
      Root Prefixes with depth 582
      Root Prefixes with depth 622
      Root Prefixes with depth 77
      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 ASes77874       ASes visible in only one AS path46439
    Origin only ASes65310         Origin ASs announced via a single AS path45254
    Transit only ASes669       Originating AS ATOM count77205
    Mixed ASes11895         Originating AS ATOM compression0.0734
    Multi-Origin Prefixes5436    
    ASes originating a single prefix26698    
    Average FIB entries per Origin AS13.6261         Maximum entries for an origin AS (AS58224)1152
    Average address range span for an origin AS40271.8845         Maximum address range for an origin AS (AS749)227886080

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 Paths2427952       Unique AS prepended Paths2619831
AS Paths used in FIB129981       AS Paths using prepending693146
    AS paths associated with a single FIB entry61802       AS Paths using private ASs158
    Average AS path length3.8944       Number of Prefixes with Selected AS Prepending Paths117396
      Maximum AS Path length17       Number of Prefixes with AS Prepending Paths117396
    Average address weighted AS path length4.8523       Maximum prepended AS Path length89
    Average entries per AS Path0.4333       Average entries per FIB AS Path8.0935
    AS Paths per origin AS31.4481       FIB AS Paths per origin AS1.6836
      AS PATH ATOM compression0.1236    

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 /12299       % Prefix /120.03
    Prefix count /13580       % Prefix /130.06
    Prefix count /141219       % Prefix /140.12
    Prefix count /152183       % Prefix /150.21
    Prefix count /1613894       % Prefix /161.32
    Prefix count /178403       % Prefix /170.80
    Prefix count /1813916       % Prefix /181.32
    Prefix count /1925359       % Prefix /192.41
    Prefix count /2046453       % Prefix /204.42
    Prefix count /2154714       % Prefix /215.20
    Prefix count /22116024       % Prefix /2211.03
    Prefix count /23112046       % Prefix /2310.65
    Prefix count /24653755       % Prefix /2462.14
    Prefix count /25412       % Prefix /250.04
    Prefix count /26572       % Prefix /260.05
    Prefix count /271037       % Prefix /270.10
    Prefix count /2863       % Prefix /280.01
    Prefix count /2986       % Prefix /290.01
    Prefix count /3032       % Prefix /300.00
    Prefix count /314       % Prefix /310.00
    Prefix count /32787       % Prefix /320.07

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 /12264       % Prefix /120.05
    Prefix count /13484       % Prefix /130.10
    Prefix count /141030       % Prefix /140.21
    Prefix count /151655       % Prefix /150.33
    Prefix count /1611040       % Prefix /162.23
    Prefix count /174454       % Prefix /170.90
    Prefix count /186959       % Prefix /181.41
    Prefix count /1914835       % Prefix /193.00
    Prefix count /2020443       % Prefix /204.14
    Prefix count /2122776       % Prefix /214.61
    Prefix count /2259930       % Prefix /2212.13
    Prefix count /2343795       % Prefix /238.86
    Prefix count /24306010       % Prefix /2461.93
    Prefix count /256       % Prefix /250.00
    Prefix count /262       % 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 /32253       % Prefix /320.05

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 1158257020       % Addresses at AS distance 13.7
    Addresses at AS distance 22098371794       % Addresses at AS distance 249.5
    Addresses at AS distance 31561702519       % Addresses at AS distance 336.8
    Addresses at AS distance 4339027675       % Addresses at AS distance 48.0
    Addresses at AS distance 565467066       % Addresses at AS distance 51.5
    Addresses at AS distance 611338625       % Addresses at AS distance 60.3
    Addresses at AS distance 77082240       % Addresses at AS distance 70.2
    Addresses at AS distance 8460288       % Addresses at AS distance 80.0
    Addresses at AS distance 92304       % Addresses at AS distance 90.0
    Addresses at AS distance 10256       % Addresses at AS distance 100.0
    Addresses at AS distance 110       % 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 hops158257020       % Addresses reachable within 1 AS hops3
    Addresses reachable within 2 AS hops2256628814       % Addresses reachable within 2 AS hops53
    Addresses reachable within 3 AS hops3818331333       % Addresses reachable within 3 AS hops90
    Addresses reachable within 4 AS hops4157359008       % Addresses reachable within 4 AS hops98
    Addresses reachable within 5 AS hops4222826074       % Addresses reachable within 5 AS hops99
    Addresses reachable within 6 AS hops4234164699       % Addresses reachable within 6 AS hops99
    Addresses reachable within 7 AS hops4241246939       % Addresses reachable within 7 AS hops99
    Addresses reachable within 8 AS hops4241707227       % Addresses reachable within 8 AS hops99
    Addresses reachable within 9 AS hops4241709531       % Addresses reachable within 9 AS hops99
    Addresses reachable within 10 AS hops4241709787       % Addresses reachable within 10 AS hops99
    Addresses reachable within 11 AS hops4241709787       % Addresses reachable within 11 AS hops99
    Addresses reachable within 12 AS hops4241709787       % Addresses reachable within 12 AS hops99
    Addresses reachable within 13 AS hops4241709787       % Addresses reachable within 13 AS hops99
    Addresses reachable within 14 AS hops4241711067       % Addresses reachable within 14 AS hops100
    Addresses reachable within 15 AS hops4241711067       % Addresses reachable within 15 AS hops100
    Addresses reachable within 16 AS hops4241711067       % 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 hops24       % ASes reachable at 1 AS hops0
    ASes reachable at 2 AS hops15329       % ASes reachable at 2 AS hops19
    ASes reachable at 3 AS hops46369       % ASes reachable at 3 AS hops59
    ASes reachable at 4 AS hops12963       % ASes reachable at 4 AS hops16
    ASes reachable at 5 AS hops2443       % ASes reachable at 5 AS hops3
    ASes reachable at 6 AS hops542       % ASes reachable at 6 AS hops0
    ASes reachable at 7 AS hops169       % ASes reachable at 7 AS hops0
    ASes reachable at 8 AS hops13       % ASes reachable at 8 AS hops0
    ASes reachable at 9 AS hops4       % ASes reachable at 9 AS hops0
    ASes reachable at 10 AS hops1       % 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 hops25       Cumulative % ASes by AS hops 10.0
    ASes reachable by 2 AS hops15354       Cumulative % ASes by AS hops 219.7
    ASes reachable by 3 AS hops61723       Cumulative % ASes by AS hops 379.3
    ASes reachable by 4 AS hops74686       Cumulative % ASes by AS hops 495.9
    ASes reachable by 5 AS hops77129       Cumulative % ASes by AS hops 599.0
    ASes reachable by 6 AS hops77671       Cumulative % ASes by AS hops 699.7
    ASes reachable by 7 AS hops77840       Cumulative % ASes by AS hops 7100.0
    ASes reachable by 8 AS hops77853       Cumulative % ASes by AS hops 8100.0
    ASes reachable by 9 AS hops77857       Cumulative % ASes by AS hops 9100.0
    ASes reachable by 10 AS hops77858       Cumulative % ASes by AS hops 10100.0
    ASes reachable by 11 AS hops77862       Cumulative % ASes by AS hops 11100.0
    ASes reachable by 12 AS hops77866       Cumulative % ASes by AS hops 12100.0
    ASes reachable by 13 AS hops77870       Cumulative % ASes by AS hops 13100.0
    ASes reachable by 14 AS hops77874       Cumulative % ASes by AS hops 14100.0
    ASes reachable by 15 AS hops77874       Cumulative % ASes by AS hops 15100.0
    ASes reachable by 16 AS hops77874       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 /975       % AS's announcing span of /90.0010
    AS's announcing span of /10102       % AS's announcing span of /100.0013
    AS's announcing span of /11173       % AS's announcing span of /110.0022
    AS's announcing span of /12244       % AS's announcing span of /120.0032
    AS's announcing span of /13403       % AS's announcing span of /130.0052
    AS's announcing span of /14843       % AS's announcing span of /140.0110
    AS's announcing span of /151640       % AS's announcing span of /150.0213
    AS's announcing span of /161808       % AS's announcing span of /160.0235
    AS's announcing span of /172444       % AS's announcing span of /170.0318
    AS's announcing span of /183808       % AS's announcing span of /180.0495
    AS's announcing span of /195118       % AS's announcing span of /190.0665
    AS's announcing span of /207868       % AS's announcing span of /200.1023
    AS's announcing span of /2110294       % AS's announcing span of /210.1338
    AS's announcing span of /2212683       % AS's announcing span of /220.1649
    AS's announcing span of /2310049       % AS's announcing span of /230.1306
    AS's announcing span of /2419272       % AS's announcing span of /240.2506
    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 /272       % 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 /290       % 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 Count178113
Average AS Connectivity Degree (356226/77874)4.5744
Average AS Connectivity IN:OUT Degree0.2594
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 Path583995Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Path571091Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Origin396020Report (sort by %reduction)Report (sort by reduction)BGP Table
    Maximal Aggregation396046Report (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 Sat Sep 13 02:00:00 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