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   AS6447 BGP Routing Table Analysis Report
   
  BGP data obtained from AS6447
Report last updated at Wed Apr 2 10:00:00 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)1033063   Change in FIB Size70   Change (%)0.007
    All BGP entries (RIB)21486065
    RIB/FIB ratio (21486065/1033063)20.7984
      Valid entries21486065
      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)3114289760
    Total address space advertised (prefix length)0.46374396
    Percentage of IPv4 space advertised (3114289760/4294967295)72.510209
    Total address space advertised - corrected to 19 /8s(data)
Average address span 3015
    Average address span (as prefix size)20.4425
Average prefix length22.9191

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 aggregates556525       Specifics as % of FIB entries (556525/1033063)53.8714
    Specifics as % of address span (1194195115/3114289760)38.3457    
    Specifics where AS prepended Path matches aggregate224386         AS-P_Path-Match % (224386/556525)40.32
    AS Path matches aggregate232929         AS-Path-Match % (232929/556525)41.8542
    AS Origin matches aggregate422577         AS-Origin-Match % (422577/556525)75.9314
    Root Prefixes476538
Root Prefix Tree Depth(data)
      Root Prefixes with depth 0417938
      Root Prefixes with depth 146683
      Root Prefixes with depth 29559
      Root Prefixes with depth 31769
      Root Prefixes with depth 4454
      Root Prefixes with depth 5100
      Root Prefixes with depth 629
      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 ASes77313       ASes visible in only one AS path45335
    Origin only ASes64821         Origin ASs announced via a single AS path44145
    Transit only ASes640       Originating AS ATOM count76673
    Mixed ASes11852         Originating AS ATOM compression0.0742
    Multi-Origin Prefixes5103    
    ASes originating a single prefix26543    
    Average FIB entries per Origin AS13.4736         Maximum entries for an origin AS (AS58224)1186
    Average address range span for an origin AS40617.8154         Maximum address range for an origin AS (AS749)228349696

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 Paths2571327       Unique AS prepended Paths2770632
AS Paths used in FIB133596       AS Paths using prepending728848
    AS paths associated with a single FIB entry64525       AS Paths using private ASs205
    Average AS path length3.8882       Number of Prefixes with Selected AS Prepending Paths115102
      Maximum AS Path length13       Number of Prefixes with AS Prepending Paths115102
    Average address weighted AS path length4.9227       Maximum prepended AS Path length89
    Average entries per AS Path0.4018       Average entries per FIB AS Path7.7327
    AS Paths per origin AS33.5363       FIB AS Paths per origin AS1.7424
      AS PATH ATOM compression0.1293    

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 /12303       % Prefix /120.03
    Prefix count /13584       % Prefix /130.06
    Prefix count /141239       % Prefix /140.12
    Prefix count /152207       % Prefix /150.21
    Prefix count /1614132       % Prefix /161.37
    Prefix count /178602       % Prefix /170.83
    Prefix count /1814766       % Prefix /181.43
    Prefix count /1925662       % Prefix /192.48
    Prefix count /2046263       % Prefix /204.48
    Prefix count /2155000       % Prefix /215.32
    Prefix count /22116627       % Prefix /2211.29
    Prefix count /23111113       % Prefix /2310.76
    Prefix count /24633134       % Prefix /2461.29
    Prefix count /25587       % Prefix /250.06
    Prefix count /26585       % Prefix /260.06
    Prefix count /271056       % Prefix /270.10
    Prefix count /2870       % Prefix /280.01
    Prefix count /29106       % Prefix /290.01
    Prefix count /3020       % Prefix /300.00
    Prefix count /312       % Prefix /310.00
    Prefix count /32839       % 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 /12266       % Prefix /120.06
    Prefix count /13489       % Prefix /130.10
    Prefix count /141046       % Prefix /140.22
    Prefix count /151673       % Prefix /150.35
    Prefix count /1611092       % Prefix /162.33
    Prefix count /174473       % Prefix /170.94
    Prefix count /186935       % Prefix /181.46
    Prefix count /1914810       % Prefix /193.11
    Prefix count /2018888       % Prefix /203.96
    Prefix count /2122362       % Prefix /214.69
    Prefix count /2259615       % Prefix /2212.51
    Prefix count /2342705       % Prefix /238.96
    Prefix count /24291837       % Prefix /2461.24
    Prefix count /25189       % 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 1160385524       % Addresses at AS distance 11186.5
    Addresses at AS distance 22143884410       % Addresses at AS distance 215860.0
    Addresses at AS distance 31568292254       % Addresses at AS distance 311601.9
    Addresses at AS distance 4346462640       % Addresses at AS distance 42563.1
    Addresses at AS distance 563687854       % Addresses at AS distance 5471.1
    Addresses at AS distance 616657569       % Addresses at AS distance 6123.2
    Addresses at AS distance 78104192       % Addresses at AS distance 760.0
    Addresses at AS distance 8942080       % Addresses at AS distance 87.0
    Addresses at AS distance 954016       % Addresses at AS distance 90.4
    Addresses at AS distance 107168       % Addresses at AS distance 100.1
    Addresses at AS distance 116656       % Addresses at AS distance 110.0
    Addresses at AS distance 12512       % Addresses at AS distance 120.0
     
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 hops160385524       % Addresses reachable within 1 AS hops1186
    Addresses reachable within 2 AS hops2304269934       % Addresses reachable within 2 AS hops17046
    Addresses reachable within 3 AS hops3872562188       % Addresses reachable within 3 AS hops28648
    Addresses reachable within 4 AS hops4219024828       % Addresses reachable within 4 AS hops31211
    Addresses reachable within 5 AS hops4282712682       % Addresses reachable within 5 AS hops31682
    Addresses reachable within 6 AS hops4402955       % Addresses reachable within 6 AS hops32
    Addresses reachable within 7 AS hops12507147       % Addresses reachable within 7 AS hops92
    Addresses reachable within 8 AS hops13449227       % Addresses reachable within 8 AS hops99
    Addresses reachable within 9 AS hops13503243       % Addresses reachable within 9 AS hops99
    Addresses reachable within 10 AS hops13510411       % Addresses reachable within 10 AS hops99
    Addresses reachable within 11 AS hops13517067       % Addresses reachable within 11 AS hops99
    Addresses reachable within 12 AS hops13517579       % Addresses reachable within 12 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 hops15377       % ASes reachable at 2 AS hops19
    ASes reachable at 3 AS hops46221       % ASes reachable at 3 AS hops59
    ASes reachable at 4 AS hops12390       % ASes reachable at 4 AS hops16
    ASes reachable at 5 AS hops2561       % ASes reachable at 5 AS hops3
    ASes reachable at 6 AS hops532       % ASes reachable at 6 AS hops0
    ASes reachable at 7 AS hops175       % ASes reachable at 7 AS hops0
    ASes reachable at 8 AS hops17       % ASes reachable at 8 AS hops0
    ASes reachable at 9 AS hops9       % ASes reachable at 9 AS hops0
    ASes reachable at 10 AS hops2       % ASes reachable at 10 AS hops0
    ASes reachable at 11 AS hops2       % ASes reachable at 11 AS hops0
    ASes reachable at 12 AS hops0       % ASes reachable at 12 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 hops15404       Cumulative % ASes by AS hops 219.9
    ASes reachable by 3 AS hops61625       Cumulative % ASes by AS hops 379.7
    ASes reachable by 4 AS hops74015       Cumulative % ASes by AS hops 495.7
    ASes reachable by 5 AS hops76576       Cumulative % ASes by AS hops 599.0
    ASes reachable by 6 AS hops77108       Cumulative % ASes by AS hops 699.7
    ASes reachable by 7 AS hops77283       Cumulative % ASes by AS hops 7100.0
    ASes reachable by 8 AS hops77300       Cumulative % ASes by AS hops 8100.0
    ASes reachable by 9 AS hops77309       Cumulative % ASes by AS hops 9100.0
    ASes reachable by 10 AS hops77311       Cumulative % ASes by AS hops 10100.0
    ASes reachable by 11 AS hops77313       Cumulative % ASes by AS hops 11100.0
    ASes reachable by 12 AS hops77313       Cumulative % ASes by AS hops 12100.0

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 /724       % 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 /10111       % AS's announcing span of /100.0015
    AS's announcing span of /11168       % AS's announcing span of /110.0022
    AS's announcing span of /12242       % AS's announcing span of /120.0032
    AS's announcing span of /13398       % AS's announcing span of /130.0052
    AS's announcing span of /14842       % AS's announcing span of /140.0110
    AS's announcing span of /151665       % AS's announcing span of /150.0218
    AS's announcing span of /161799       % AS's announcing span of /160.0236
    AS's announcing span of /172464       % AS's announcing span of /170.0323
    AS's announcing span of /183757       % AS's announcing span of /180.0492
    AS's announcing span of /195167       % AS's announcing span of /190.0677
    AS's announcing span of /207760       % AS's announcing span of /200.1016
    AS's announcing span of /2110384       % AS's announcing span of /210.1360
    AS's announcing span of /2212639       % AS's announcing span of /220.1655
    AS's announcing span of /239860       % AS's announcing span of /230.1291
    AS's announcing span of /2418945       % AS's announcing span of /240.2481
    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 /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 /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.

h h h
AS Connectivity ReportData
AS Adjacency Count178878
Average AS Connectivity Degree (357756/77313)4.6274
Average AS Connectivity IN:OUT Degree0.2626
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 Path581989Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Path569059Report (sort by %reduction)Report (sort by reduction)BGP Table
    Aggregation using AS Origin382046Report (sort by %reduction)Report (sort by reduction)BGP Table
    Maximal Aggregation382097Report (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 Wed Apr 2 10:00:00 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