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AS6447 BGP Routing Table Analysis Report


	BGP data obtained from AS6447 Report last updated at Thu Jun 26 20:00:00 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)	1040305	Change in FIB Size	12	Change (%)	0.001
All BGP entries (RIB)	22308639
RIB/FIB ratio (22308639/1040305)	21.4443
Valid entries	22308639
Suppressed RIB entries	0
Damped entries	0
History entries	0

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)	3107557633
Total address space advertised (prefix length)	0.46686600
Percentage of IPv4 space advertised (3107557633/4294967295)	72.353464
Total address space advertised - corrected to 19 /8s	(data)
Average address span	2987
Average address span (as prefix size)	20.4555
Average prefix length	22.9380

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 aggregates	556210	Specifics as % of FIB entries (556210/1040305)	53.4661
Specifics as % of address span (1138609700/3107557633)	36.6400
Specifics where AS prepended Path matches aggregate	227251	AS-P_Path-Match % (227251/556210)	40.86
AS Path matches aggregate	240315	AS-Path-Match % (240315/556210)	43.2058
AS Origin matches aggregate	422255	AS-Origin-Match % (422255/556210)	75.9165
Root Prefixes	484095
Root Prefix Tree Depth	(data)
Root Prefixes with depth 0	425380
Root Prefixes with depth 1	46896
Root Prefixes with depth 2	9580
Root Prefixes with depth 3	1706
Root Prefixes with depth 4	424
Root Prefixes with depth 5	79
Root Prefixes with depth 6	23
Root Prefixes with depth 7	6
Root Prefixes with depth 8	1

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 ASes	77488	ASes visible in only one AS path	44996
Origin only ASes	64985	Origin ASs announced via a single AS path	43820
Transit only ASes	655	Originating AS ATOM count	76833
Mixed ASes	11848	Originating AS ATOM compression	0.0739
Multi-Origin Prefixes	6013
ASes originating a single prefix	26550
Average FIB entries per Origin AS	13.5398	Maximum entries for an origin AS (AS58224)	1162
Average address range span for an origin AS	40445.6110	Maximum address range for an origin AS (AS749)	227889152

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 Paths	2646487	Unique AS prepended Paths	2853500
AS Paths used in FIB	136040	AS Paths using prepending	755240
AS paths associated with a single FIB entry	66172	AS Paths using private ASs	174
Average AS path length	3.8911	Number of Prefixes with Selected AS Prepending Paths	113769
Maximum AS Path length	17	Number of Prefixes with AS Prepending Paths	113769
Average address weighted AS path length	4.8559	Maximum prepended AS Path length	104
Average entries per AS Path	0.3931	Average entries per FIB AS Path	7.6471
AS Paths per origin AS	34.4447	FIB AS Paths per origin AS	1.7706
AS PATH ATOM compression	0.1308

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 /8	16	% Prefix /8	0.00
Prefix count /9	14	% Prefix /9	0.00
Prefix count /10	41	% Prefix /10	0.00
Prefix count /11	92	% Prefix /11	0.01
Prefix count /12	299	% Prefix /12	0.03
Prefix count /13	585	% Prefix /13	0.06
Prefix count /14	1220	% Prefix /14	0.12
Prefix count /15	2188	% Prefix /15	0.21
Prefix count /16	13937	% Prefix /16	1.34
Prefix count /17	8435	% Prefix /17	0.81
Prefix count /18	14022	% Prefix /18	1.35
Prefix count /19	25323	% Prefix /19	2.43
Prefix count /20	46197	% Prefix /20	4.44
Prefix count /21	54680	% Prefix /21	5.26
Prefix count /22	115910	% Prefix /22	11.14
Prefix count /23	111257	% Prefix /23	10.69
Prefix count /24	643005	% Prefix /24	61.81
Prefix count /25	402	% Prefix /25	0.04
Prefix count /26	583	% Prefix /26	0.06
Prefix count /27	1041	% Prefix /27	0.10
Prefix count /28	69	% Prefix /28	0.01
Prefix count /29	105	% Prefix /29	0.01
Prefix count /30	18	% Prefix /30	0.00
Prefix count /31	3	% Prefix /31	0.00
Prefix count /32	863	% Prefix /32	0.08

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 /8	16	% Prefix /8	0.00
Prefix count /9	9	% Prefix /9	0.00
Prefix count /10	41	% Prefix /10	0.01
Prefix count /11	85	% Prefix /11	0.02
Prefix count /12	264	% Prefix /12	0.05
Prefix count /13	490	% Prefix /13	0.10
Prefix count /14	1031	% Prefix /14	0.21
Prefix count /15	1656	% Prefix /15	0.34
Prefix count /16	11039	% Prefix /16	2.28
Prefix count /17	4455	% Prefix /17	0.92
Prefix count /18	6964	% Prefix /18	1.44
Prefix count /19	14776	% Prefix /19	3.05
Prefix count /20	20128	% Prefix /20	4.16
Prefix count /21	22478	% Prefix /21	4.64
Prefix count /22	59488	% Prefix /22	12.29
Prefix count /23	43123	% Prefix /23	8.91
Prefix count /24	298039	% Prefix /24	61.57
Prefix count /25	6	% Prefix /25	0.00
Prefix count /26	3	% Prefix /26	0.00
Prefix count /27	1	% Prefix /27	0.00
Prefix count /28	2	% Prefix /28	0.00
Prefix count /29	0	% Prefix /29	0.00
Prefix count /30	0	% Prefix /30	0.00
Prefix count /31	0	% Prefix /31	0.00
Prefix count /32	1	% Prefix /32	0.00

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 0	0	% Addresses at AS distance 0	0.0
Addresses at AS distance 1	159532156	% Addresses at AS distance 1	3.8
Addresses at AS distance 2	2100128290	% Addresses at AS distance 2	49.5
Addresses at AS distance 3	1565615125	% Addresses at AS distance 3	36.9
Addresses at AS distance 4	340994069	% Addresses at AS distance 4	8.0
Addresses at AS distance 5	62938812	% Addresses at AS distance 5	1.5
Addresses at AS distance 6	10394785	% Addresses at AS distance 6	0.2
Addresses at AS distance 7	6501376	% Addresses at AS distance 7	0.2
Addresses at AS distance 8	55808	% Addresses at AS distance 8	0.0
Addresses at AS distance 9	5632	% Addresses at AS distance 9	0.0
Addresses at AS distance 10	0	% Addresses at AS distance 10	0.0
Addresses at AS distance 11	0	% Addresses at AS distance 11	0.0
Addresses at AS distance 12	0	% Addresses at AS distance 12	0.0
Addresses at AS distance 13	0	% Addresses at AS distance 13	0.0
Addresses at AS distance 14	1280	% Addresses at AS distance 14	0.0
Addresses at AS distance 15	0	% Addresses at AS distance 15	0.0
Addresses at AS distance 16	0	% Addresses at AS distance 16	0.0

Cumulative Address by AS distance	(data)	Cumulative % Address by AS distance	(data)
Addresses reachable within 0 AS hops	0	% Addresses reachable within 0 AS hops	0
Addresses reachable within 1 AS hops	159532156	% Addresses reachable within 1 AS hops	3
Addresses reachable within 2 AS hops	2259660446	% Addresses reachable within 2 AS hops	53
Addresses reachable within 3 AS hops	3825275571	% Addresses reachable within 3 AS hops	90
Addresses reachable within 4 AS hops	4166269640	% Addresses reachable within 4 AS hops	98
Addresses reachable within 5 AS hops	4229208452	% Addresses reachable within 5 AS hops	99
Addresses reachable within 6 AS hops	4239603237	% Addresses reachable within 6 AS hops	99
Addresses reachable within 7 AS hops	4246104613	% Addresses reachable within 7 AS hops	99
Addresses reachable within 8 AS hops	4246160421	% Addresses reachable within 8 AS hops	99
Addresses reachable within 9 AS hops	4246166053	% Addresses reachable within 9 AS hops	99
Addresses reachable within 10 AS hops	4246166053	% Addresses reachable within 10 AS hops	99
Addresses reachable within 11 AS hops	4246166053	% Addresses reachable within 11 AS hops	99
Addresses reachable within 12 AS hops	4246166053	% Addresses reachable within 12 AS hops	99
Addresses reachable within 13 AS hops	4246166053	% Addresses reachable within 13 AS hops	99
Addresses reachable within 14 AS hops	4246167333	% Addresses reachable within 14 AS hops	100
Addresses reachable within 15 AS hops	4246167333	% Addresses reachable within 15 AS hops	100
Addresses reachable within 16 AS hops	4246167333	% Addresses reachable within 16 AS hops	100

ASes by AS distance	(data)	% ASes by AS hops	(data)
ASes reachable at 0 AS hops	1	% ASes reachable at 0 AS hops	0
ASes reachable at 1 AS hops	26	% ASes reachable at 1 AS hops	0
ASes reachable at 2 AS hops	15406	% ASes reachable at 2 AS hops	19
ASes reachable at 3 AS hops	46409	% ASes reachable at 3 AS hops	59
ASes reachable at 4 AS hops	12496	% ASes reachable at 4 AS hops	16
ASes reachable at 5 AS hops	2437	% ASes reachable at 5 AS hops	3
ASes reachable at 6 AS hops	518	% ASes reachable at 6 AS hops	0
ASes reachable at 7 AS hops	159	% ASes reachable at 7 AS hops	0
ASes reachable at 8 AS hops	15	% ASes reachable at 8 AS hops	0
ASes reachable at 9 AS hops	4	% ASes reachable at 9 AS hops	0
ASes reachable at 10 AS hops	1	% ASes reachable at 10 AS hops	0
ASes reachable at 11 AS hops	4	% ASes reachable at 11 AS hops	0
ASes reachable at 12 AS hops	4	% ASes reachable at 12 AS hops	0
ASes reachable at 13 AS hops	4	% ASes reachable at 13 AS hops	0
ASes reachable at 14 AS hops	4	% ASes reachable at 14 AS hops	0
ASes reachable at 15 AS hops	0	% ASes reachable at 15 AS hops	0
ASes reachable at 16 AS hops	0	% ASes reachable at 16 AS hops	0

Cumulative ASes by AS hops	(data)	Cumulative % ASes by AS hops	(data)
ASes reachable by 0 AS hops	1	Cumulative % ASes by AS hops 0	0.0
ASes reachable by 1 AS hops	27	Cumulative % ASes by AS hops 1	0.0
ASes reachable by 2 AS hops	15433	Cumulative % ASes by AS hops 2	19.9
ASes reachable by 3 AS hops	61842	Cumulative % ASes by AS hops 3	79.8
ASes reachable by 4 AS hops	74338	Cumulative % ASes by AS hops 4	95.9
ASes reachable by 5 AS hops	76775	Cumulative % ASes by AS hops 5	99.1
ASes reachable by 6 AS hops	77293	Cumulative % ASes by AS hops 6	99.7
ASes reachable by 7 AS hops	77452	Cumulative % ASes by AS hops 7	100.0
ASes reachable by 8 AS hops	77467	Cumulative % ASes by AS hops 8	100.0
ASes reachable by 9 AS hops	77471	Cumulative % ASes by AS hops 9	100.0
ASes reachable by 10 AS hops	77472	Cumulative % ASes by AS hops 10	100.0
ASes reachable by 11 AS hops	77476	Cumulative % ASes by AS hops 11	100.0
ASes reachable by 12 AS hops	77480	Cumulative % ASes by AS hops 12	100.0
ASes reachable by 13 AS hops	77484	Cumulative % ASes by AS hops 13	100.0
ASes reachable by 14 AS hops	77488	Cumulative % ASes by AS hops 14	100.0
ASes reachable by 15 AS hops	77488	Cumulative % ASes by AS hops 15	100.0
ASes reachable by 16 AS hops	77488	Cumulative % ASes by AS hops 16	100.0

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 Reports	Data Sets(txt)	Percentage Reports	Data
Originating Addresses AS Count	(data)	Originating Addresses % AS Count	(data)
AS's announcing span of /4	2	% AS's announcing span of /4	0.0000
AS's announcing span of /5	5	% AS's announcing span of /5	0.0001
AS's announcing span of /6	11	% AS's announcing span of /6	0.0001
AS's announcing span of /7	20	% AS's announcing span of /7	0.0003
AS's announcing span of /8	44	% AS's announcing span of /8	0.0006
AS's announcing span of /9	73	% AS's announcing span of /9	0.0010
AS's announcing span of /10	107	% AS's announcing span of /10	0.0014
AS's announcing span of /11	170	% AS's announcing span of /11	0.0022
AS's announcing span of /12	247	% AS's announcing span of /12	0.0032
AS's announcing span of /13	398	% AS's announcing span of /13	0.0052
AS's announcing span of /14	843	% AS's announcing span of /14	0.0110
AS's announcing span of /15	1646	% AS's announcing span of /15	0.0215
AS's announcing span of /16	1803	% AS's announcing span of /16	0.0236
AS's announcing span of /17	2443	% AS's announcing span of /17	0.0319
AS's announcing span of /18	3792	% AS's announcing span of /18	0.0495
AS's announcing span of /19	5117	% AS's announcing span of /19	0.0669
AS's announcing span of /20	7796	% AS's announcing span of /20	0.1019
AS's announcing span of /21	10362	% AS's announcing span of /21	0.1354
AS's announcing span of /22	12603	% AS's announcing span of /22	0.1647
AS's announcing span of /23	9967	% AS's announcing span of /23	0.1302
AS's announcing span of /24	19078	% AS's announcing span of /24	0.2493
AS's announcing span of /25	1	% AS's announcing span of /25	0.0000
AS's announcing span of /26	3	% AS's announcing span of /26	0.0000
AS's announcing span of /27	1	% AS's announcing span of /27	0.0000
AS's announcing span of /28	3	% AS's announcing span of /28	0.0000
AS's announcing span of /29	1	% AS's announcing span of /29	0.0000
AS's announcing span of /30	1	% AS's announcing span of /30	0.0000
AS's announcing span of /31	0	% AS's announcing span of /31	0.0000
AS's announcing span of /32	0	% AS's announcing span of /32	0.0000

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.

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AS Connectivity Report	Data
AS Adjacency Count	180091
Average AS Connectivity Degree (360182/77488)	4.6482
Average AS Connectivity IN:OUT Degree	0.2659
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:

24.0.0.0/8 accept prefix length <=20
61.0.0.0/8 accept prefix length <= 20
63.0.0.0/8 accept prefix length <= 20
64.0.0.0/8 accept prefix length <= 20
65.0.0.0/8 accept prefix length <= 20
66.0.0.0/8 accept prefix length <= 20
0.0.0.0/1 (0.0.0.0/8 through 126.0.0.0/8) accept prefix length <= 19
128.0.0.0/2 (128.0.0.0/8 through 191.0.0.0/8) accept prefix length <= 16
192.0.0.0/8 through 204.0.0.0/8 accept prefix length <=24
205.0.0.0/8 through 255.0.0.0/8 accept prefix length <=20

Aggregation possibilities are identified within this filtered prefix set.

Route Aggregation Reports	Data
Aggregation Potential Summary	(data)
Aggregation Potential Summary	(data)
Aggregation using prepended AS Path	586533	Report (sort by %reduction)	Report (sort by reduction)	BGP Table
Aggregation using AS Path	576504	Report (sort by %reduction)	Report (sort by reduction)	BGP Table
Aggregation using AS Origin	387911	Report (sort by %reduction)	Report (sort by reduction)	BGP Table
Maximal Aggregation	387964	Report (sort by %reduction)	Report (sort by reduction)	BGP Table

BGP Table

Table Summary Report

BGP Report

BGP data obtained from the boundary of AS6447

Report last updated at Thu Jun 26 20:00:00 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

The name is a reference to a graph of the data. If the data is a single series then this is a simple time-series plot. If the data is a multi-series vector, the first graph is a compound graph of the time series of each element in the vector, the second is a relative plot using a common start point and looking at the relative change in the value of each element of the vector. The third is a relative plot, normalizing the start point to zero and looking at the absolute change in each element of the vector. The last isa distribution graph.
The value is a reference to the text raw data file. The text file uses a column format, with the first column representing the measurement time. The time base is the number of seconds since 1 January 1970 UTC. If you wish to convert this to Microsoft Excel time format, then divide this time