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   AS6447 BGP Routing Table Analysis Report
   
  BGP data obtained from AS6447
Report last updated at Sat Apr 26 04:00:00 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)1031772   Change in FIB Size-105   Change (%)-0.010
    All BGP entries (RIB)22131639
    RIB/FIB ratio (22131639/1031772)21.4501
      Valid entries22131639
      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)3108035552
    Total address space advertised (prefix length)0.46664414
    Percentage of IPv4 space advertised (3108035552/4294967295)72.364592
    Total address space advertised - corrected to 19 /8s(data)
Average address span 3012
    Average address span (as prefix size)20.4435
Average prefix length22.9302

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 aggregates552135       Specifics as % of FIB entries (552135/1031772)53.5133
    Specifics as % of address span (1168083323/3108035552)37.5827    
    Specifics where AS prepended Path matches aggregate220575         AS-P_Path-Match % (220575/552135)39.95
    AS Path matches aggregate227901         AS-Path-Match % (227901/552135)41.2763
    AS Origin matches aggregate418988         AS-Origin-Match % (418988/552135)75.8851
    Root Prefixes479637
Root Prefix Tree Depth(data)
      Root Prefixes with depth 0421344
      Root Prefixes with depth 146580
      Root Prefixes with depth 29478
      Root Prefixes with depth 31694
      Root Prefixes with depth 4425
      Root Prefixes with depth 584
      Root Prefixes with depth 626
      Root Prefixes with depth 75
      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 ASes77371       ASes visible in only one AS path44594
    Origin only ASes64894         Origin ASs announced via a single AS path43440
    Transit only ASes635       Originating AS ATOM count76736
    Mixed ASes11842         Originating AS ATOM compression0.0744
    Multi-Origin Prefixes5066    
    ASes originating a single prefix26601    
    Average FIB entries per Origin AS13.4457         Maximum entries for an origin AS (AS62240)1419
    Average address range span for an origin AS40502.9654         Maximum address range for an origin AS (AS749)228350464

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 Paths2648445       Unique AS prepended Paths2853310
AS Paths used in FIB138423       AS Paths using prepending755729
    AS paths associated with a single FIB entry67769       AS Paths using private ASs195
    Average AS path length3.8899       Number of Prefixes with Selected AS Prepending Paths111611
      Maximum AS Path length14       Number of Prefixes with AS Prepending Paths111611
    Average address weighted AS path length4.8827       Maximum prepended AS Path length130
    Average entries per AS Path0.3896       Average entries per FIB AS Path7.4538
    AS Paths per origin AS34.5137       FIB AS Paths per origin AS1.8039
      AS PATH ATOM compression0.1342    

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 /916       % Prefix /90.00
    Prefix count /1041       % Prefix /100.00
    Prefix count /1193       % Prefix /110.01
    Prefix count /12300       % Prefix /120.03
    Prefix count /13583       % Prefix /130.06
    Prefix count /141233       % Prefix /140.12
    Prefix count /152195       % Prefix /150.21
    Prefix count /1614033       % Prefix /161.36
    Prefix count /178461       % Prefix /170.82
    Prefix count /1814248       % Prefix /181.38
    Prefix count /1925369       % Prefix /192.46
    Prefix count /2045860       % Prefix /204.44
    Prefix count /2154511       % Prefix /215.28
    Prefix count /22115647       % Prefix /2211.21
    Prefix count /23109828       % Prefix /2310.64
    Prefix count /24636103       % Prefix /2461.65
    Prefix count /25583       % Prefix /250.06
    Prefix count /26579       % Prefix /260.06
    Prefix count /271049       % Prefix /270.10
    Prefix count /2866       % Prefix /280.01
    Prefix count /29105       % Prefix /290.01
    Prefix count /3020       % Prefix /300.00
    Prefix count /312       % Prefix /310.00
    Prefix count /32831       % 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 /1186       % Prefix /110.02
    Prefix count /12264       % Prefix /120.06
    Prefix count /13488       % Prefix /130.10
    Prefix count /141044       % Prefix /140.22
    Prefix count /151667       % Prefix /150.35
    Prefix count /1611044       % Prefix /162.30
    Prefix count /174472       % Prefix /170.93
    Prefix count /186927       % Prefix /181.44
    Prefix count /1914786       % Prefix /193.08
    Prefix count /2018979       % Prefix /203.96
    Prefix count /2122422       % Prefix /214.67
    Prefix count /2259474       % Prefix /2212.40
    Prefix count /2342777       % Prefix /238.92
    Prefix count /24294947       % Prefix /2461.49
    Prefix count /25188       % Prefix /250.04
    Prefix count /262       % Prefix /260.00
    Prefix count /272       % 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 /320       % 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 1159825340       % Addresses at AS distance 13.7
    Addresses at AS distance 22131820999       % Addresses at AS distance 249.9
    Addresses at AS distance 31567612379       % Addresses at AS distance 336.7
    Addresses at AS distance 4337237933       % Addresses at AS distance 47.9
    Addresses at AS distance 561699247       % Addresses at AS distance 51.4
    Addresses at AS distance 610607009       % Addresses at AS distance 60.2
    Addresses at AS distance 76558208       % Addresses at AS distance 70.2
    Addresses at AS distance 8738560       % Addresses at AS distance 80.0
    Addresses at AS distance 918432       % Addresses at AS distance 90.0
    Addresses at AS distance 10768       % 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
     
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 hops159825340       % Addresses reachable within 1 AS hops3
    Addresses reachable within 2 AS hops2291646339       % Addresses reachable within 2 AS hops53
    Addresses reachable within 3 AS hops3859258718       % Addresses reachable within 3 AS hops90
    Addresses reachable within 4 AS hops4196496651       % Addresses reachable within 4 AS hops98
    Addresses reachable within 5 AS hops4258195898       % Addresses reachable within 5 AS hops99
    Addresses reachable within 6 AS hops4268802907       % Addresses reachable within 6 AS hops99
    Addresses reachable within 7 AS hops4275361115       % Addresses reachable within 7 AS hops99
    Addresses reachable within 8 AS hops4276099675       % Addresses reachable within 8 AS hops99
    Addresses reachable within 9 AS hops4276118107       % Addresses reachable within 9 AS hops99
    Addresses reachable within 10 AS hops4276118875       % Addresses reachable within 10 AS hops100
    Addresses reachable within 11 AS hops4276118875       % Addresses reachable within 11 AS hops100
    Addresses reachable within 12 AS hops4276118875       % Addresses reachable within 12 AS hops100
    Addresses reachable within 13 AS hops4276118875       % Addresses reachable within 13 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 hops15359       % ASes reachable at 2 AS hops19
    ASes reachable at 3 AS hops45964       % ASes reachable at 3 AS hops59
    ASes reachable at 4 AS hops12804       % ASes reachable at 4 AS hops16
    ASes reachable at 5 AS hops2494       % ASes reachable at 5 AS hops3
    ASes reachable at 6 AS hops546       % ASes reachable at 6 AS hops0
    ASes reachable at 7 AS hops152       % ASes reachable at 7 AS hops0
    ASes reachable at 8 AS hops22       % ASes reachable at 8 AS hops0
    ASes reachable at 9 AS hops3       % ASes reachable at 9 AS hops0
    ASes reachable at 10 AS hops0       % ASes reachable at 10 AS hops0
    ASes reachable at 11 AS hops0       % ASes reachable at 11 AS hops0
    ASes reachable at 12 AS hops0       % ASes reachable at 12 AS hops0
    ASes reachable at 13 AS hops0       % ASes reachable at 13 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 hops15386       Cumulative % ASes by AS hops 219.9
    ASes reachable by 3 AS hops61350       Cumulative % ASes by AS hops 379.3
    ASes reachable by 4 AS hops74154       Cumulative % ASes by AS hops 495.8
    ASes reachable by 5 AS hops76648       Cumulative % ASes by AS hops 599.1
    ASes reachable by 6 AS hops77194       Cumulative % ASes by AS hops 699.8
    ASes reachable by 7 AS hops77346       Cumulative % ASes by AS hops 7100.0
    ASes reachable by 8 AS hops77368       Cumulative % ASes by AS hops 8100.0
    ASes reachable by 9 AS hops77371       Cumulative % ASes by AS hops 9100.0
    ASes reachable by 10 AS hops77371       Cumulative % ASes by AS hops 10100.0
    ASes reachable by 11 AS hops77371       Cumulative % ASes by AS hops 11100.0
    ASes reachable by 12 AS hops77371       Cumulative % ASes by AS hops 12100.0
    ASes reachable by 13 AS hops77371       Cumulative % ASes by AS hops 13100.0

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 /610       % AS's announcing span of /60.0001
    AS's announcing span of /723       % AS's announcing span of /70.0003
    AS's announcing span of /845       % AS's announcing span of /80.0006
    AS's announcing span of /972       % AS's announcing span of /90.0009
    AS's announcing span of /10105       % AS's announcing span of /100.0014
    AS's announcing span of /11170       % 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 /13395       % 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 /151652       % AS's announcing span of /150.0216
    AS's announcing span of /161793       % AS's announcing span of /160.0235
    AS's announcing span of /172463       % AS's announcing span of /170.0322
    AS's announcing span of /183771       % AS's announcing span of /180.0493
    AS's announcing span of /195148       % AS's announcing span of /190.0673
    AS's announcing span of /207766       % AS's announcing span of /200.1016
    AS's announcing span of /2110331       % AS's announcing span of /210.1352
    AS's announcing span of /2212658       % AS's announcing span of /220.1656
    AS's announcing span of /239919       % AS's announcing span of /230.1298
    AS's announcing span of /2419014       % AS's announcing span of /240.2488
    AS's announcing span of /251       % AS's announcing span of /250.0000
    AS's announcing span of /262       % 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 /282       % 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 /321       % 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.

@†yþ @†yþ @†yþ
AS Connectivity ReportData
AS Adjacency Count178279
Average AS Connectivity Degree (356558/77371)4.6084
Average AS Connectivity IN:OUT Degree0.2627
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 Path588122Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Path581391Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Origin383109Report (sort by %reduction)Report (sort by reduction)BGP Table
    Maximal Aggregation383173Report (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 Apr 26 04:00:00 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