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AS6447 BGP Routing Table Analysis Report


	BGP data obtained from AS6447 Report last updated at Thu Apr 3 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)	1033821	Change in FIB Size	310	Change (%)	0.030
All BGP entries (RIB)	22458182
RIB/FIB ratio (22458182/1033821)	21.7235
Valid entries	22458182
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)	3114440928
Total address space advertised (prefix length)	0.46367394
Percentage of IPv4 space advertised (3114440928/4294967295)	72.513729
Total address space advertised - corrected to 19 /8s	(data)
Average address span	3013
Average address span (as prefix size)	20.4435
Average prefix length	22.9189

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	557089	Specifics as % of FIB entries (557089/1033821)	53.8864
Specifics as % of address span (1195552009/3114440928)	38.3874
Specifics where AS prepended Path matches aggregate	229233	AS-P_Path-Match % (229233/557089)	41.15
AS Path matches aggregate	237921	AS-Path-Match % (237921/557089)	42.7079
AS Origin matches aggregate	423079	AS-Origin-Match % (423079/557089)	75.9446
Root Prefixes	476732
Root Prefix Tree Depth	(data)
Root Prefixes with depth 0	418041
Root Prefixes with depth 1	46775
Root Prefixes with depth 2	9550
Root Prefixes with depth 3	1778
Root Prefixes with depth 4	453
Root Prefixes with depth 5	100
Root Prefixes with depth 6	29
Root Prefixes with depth 7	5
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	77332	ASes visible in only one AS path	45670
Origin only ASes	64829	Origin ASs announced via a single AS path	44463
Transit only ASes	643	Originating AS ATOM count	76689
Mixed ASes	11860	Originating AS ATOM compression	0.0742
Multi-Origin Prefixes	5472
ASes originating a single prefix	26534
Average FIB entries per Origin AS	13.4807	Maximum entries for an origin AS (AS58224)	1186
Average address range span for an origin AS	40611.3123	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 Paths	2687204	Unique AS prepended Paths	2894725
AS Paths used in FIB	131762	AS Paths using prepending	756435
AS paths associated with a single FIB entry	63028	AS Paths using private ASs	1372
Average AS path length	3.8941	Number of Prefixes with Selected AS Prepending Paths	110622
Maximum AS Path length	20	Number of Prefixes with AS Prepending Paths	110622
Average address weighted AS path length	4.9278	Maximum prepended AS Path length	89
Average entries per AS Path	0.3847	Average entries per FIB AS Path	7.8461
AS Paths per origin AS	35.0403	FIB AS Paths per origin AS	1.7181
AS PATH ATOM compression	0.1275

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	16	% Prefix /9	0.00
Prefix count /10	41	% Prefix /10	0.00
Prefix count /11	93	% Prefix /11	0.01
Prefix count /12	303	% Prefix /12	0.03
Prefix count /13	584	% Prefix /13	0.06
Prefix count /14	1239	% Prefix /14	0.12
Prefix count /15	2207	% Prefix /15	0.21
Prefix count /16	14133	% Prefix /16	1.37
Prefix count /17	8606	% Prefix /17	0.83
Prefix count /18	14810	% Prefix /18	1.43
Prefix count /19	25672	% Prefix /19	2.48
Prefix count /20	46299	% Prefix /20	4.48
Prefix count /21	55032	% Prefix /21	5.32
Prefix count /22	116742	% Prefix /22	11.29
Prefix count /23	111282	% Prefix /23	10.76
Prefix count /24	633493	% Prefix /24	61.28
Prefix count /25	586	% Prefix /25	0.06
Prefix count /26	581	% Prefix /26	0.06
Prefix count /27	1051	% Prefix /27	0.10
Prefix count /28	70	% Prefix /28	0.01
Prefix count /29	106	% Prefix /29	0.01
Prefix count /30	20	% Prefix /30	0.00
Prefix count /31	2	% Prefix /31	0.00
Prefix count /32	837	% 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	86	% Prefix /11	0.02
Prefix count /12	266	% Prefix /12	0.06
Prefix count /13	489	% Prefix /13	0.10
Prefix count /14	1046	% Prefix /14	0.22
Prefix count /15	1673	% Prefix /15	0.35
Prefix count /16	11092	% Prefix /16	2.33
Prefix count /17	4473	% Prefix /17	0.94
Prefix count /18	6936	% Prefix /18	1.45
Prefix count /19	14813	% Prefix /19	3.11
Prefix count /20	18897	% Prefix /20	3.96
Prefix count /21	22365	% Prefix /21	4.69
Prefix count /22	59640	% Prefix /22	12.51
Prefix count /23	42714	% Prefix /23	8.96
Prefix count /24	291982	% Prefix /24	61.25
Prefix count /25	188	% Prefix /25	0.04
Prefix count /26	2	% Prefix /26	0.00
Prefix count /27	2	% 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	0	% 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	160384500	% Addresses at AS distance 1	1067.4
Addresses at AS distance 2	2139036698	% Addresses at AS distance 2	14235.9
Addresses at AS distance 3	1573065054	% Addresses at AS distance 3	10469.2
Addresses at AS distance 4	345426992	% Addresses at AS distance 4	2298.9
Addresses at AS distance 5	65711788	% Addresses at AS distance 5	437.3
Addresses at AS distance 6	16412577	% Addresses at AS distance 6	109.2
Addresses at AS distance 7	8813568	% Addresses at AS distance 7	58.7
Addresses at AS distance 8	963584	% Addresses at AS distance 8	6.4
Addresses at AS distance 9	158720	% Addresses at AS distance 9	1.1
Addresses at AS distance 10	8704	% Addresses at AS distance 10	0.1
Addresses at AS distance 11	10240	% Addresses at AS distance 11	0.1
Addresses at AS distance 12	512	% 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	0	% 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
Addresses at AS distance 17	0	% Addresses at AS distance 17	0.0
Addresses at AS distance 18	0	% Addresses at AS distance 18	0.0
Addresses at AS distance 19	0	% Addresses at AS distance 19	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	160384500	% Addresses reachable within 1 AS hops	1067
Addresses reachable within 2 AS hops	2299421198	% Addresses reachable within 2 AS hops	15303
Addresses reachable within 3 AS hops	3872486252	% Addresses reachable within 3 AS hops	25772
Addresses reachable within 4 AS hops	4217913244	% Addresses reachable within 4 AS hops	28071
Addresses reachable within 5 AS hops	4283625032	% Addresses reachable within 5 AS hops	28508
Addresses reachable within 6 AS hops	5070313	% Addresses reachable within 6 AS hops	33
Addresses reachable within 7 AS hops	13883881	% Addresses reachable within 7 AS hops	92
Addresses reachable within 8 AS hops	14847465	% Addresses reachable within 8 AS hops	98
Addresses reachable within 9 AS hops	15006185	% Addresses reachable within 9 AS hops	99
Addresses reachable within 10 AS hops	15014889	% Addresses reachable within 10 AS hops	99
Addresses reachable within 11 AS hops	15025129	% Addresses reachable within 11 AS hops	99
Addresses reachable within 12 AS hops	15025641	% Addresses reachable within 12 AS hops	100
Addresses reachable within 13 AS hops	15025641	% Addresses reachable within 13 AS hops	100
Addresses reachable within 14 AS hops	15025641	% Addresses reachable within 14 AS hops	100
Addresses reachable within 15 AS hops	15025641	% Addresses reachable within 15 AS hops	100
Addresses reachable within 16 AS hops	15025641	% Addresses reachable within 16 AS hops	100
Addresses reachable within 17 AS hops	15025641	% Addresses reachable within 17 AS hops	100
Addresses reachable within 18 AS hops	15025641	% Addresses reachable within 18 AS hops	100
Addresses reachable within 19 AS hops	15025641	% Addresses reachable within 19 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	27	% ASes reachable at 1 AS hops	0
ASes reachable at 2 AS hops	15365	% ASes reachable at 2 AS hops	19
ASes reachable at 3 AS hops	46298	% ASes reachable at 3 AS hops	59
ASes reachable at 4 AS hops	12378	% ASes reachable at 4 AS hops	16
ASes reachable at 5 AS hops	2529	% ASes reachable at 5 AS hops	3
ASes reachable at 6 AS hops	520	% ASes reachable at 6 AS hops	0
ASes reachable at 7 AS hops	174	% ASes reachable at 7 AS hops	0
ASes reachable at 8 AS hops	25	% ASes reachable at 8 AS hops	0
ASes reachable at 9 AS hops	12	% 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	2	% ASes reachable at 11 AS hops	0
ASes reachable at 12 AS hops	0	% ASes reachable at 12 AS hops	0
ASes reachable at 13 AS hops	0	% ASes reachable at 13 AS hops	0
ASes reachable at 14 AS hops	0	% 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
ASes reachable at 17 AS hops	0	% ASes reachable at 17 AS hops	0
ASes reachable at 18 AS hops	0	% ASes reachable at 18 AS hops	0
ASes reachable at 19 AS hops	0	% ASes reachable at 19 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	28	Cumulative % ASes by AS hops 1	0.0
ASes reachable by 2 AS hops	15393	Cumulative % ASes by AS hops 2	19.9
ASes reachable by 3 AS hops	61691	Cumulative % ASes by AS hops 3	79.8
ASes reachable by 4 AS hops	74069	Cumulative % ASes by AS hops 4	95.8
ASes reachable by 5 AS hops	76598	Cumulative % ASes by AS hops 5	99.1
ASes reachable by 6 AS hops	77118	Cumulative % ASes by AS hops 6	99.7
ASes reachable by 7 AS hops	77292	Cumulative % ASes by AS hops 7	99.9
ASes reachable by 8 AS hops	77317	Cumulative % ASes by AS hops 8	100.0
ASes reachable by 9 AS hops	77329	Cumulative % ASes by AS hops 9	100.0
ASes reachable by 10 AS hops	77330	Cumulative % ASes by AS hops 10	100.0
ASes reachable by 11 AS hops	77332	Cumulative % ASes by AS hops 11	100.0
ASes reachable by 12 AS hops	77332	Cumulative % ASes by AS hops 12	100.0
ASes reachable by 13 AS hops	77332	Cumulative % ASes by AS hops 13	100.0
ASes reachable by 14 AS hops	77332	Cumulative % ASes by AS hops 14	100.0
ASes reachable by 15 AS hops	77332	Cumulative % ASes by AS hops 15	100.0
ASes reachable by 16 AS hops	77332	Cumulative % ASes by AS hops 16	100.0
ASes reachable by 17 AS hops	77332	Cumulative % ASes by AS hops 17	100.0
ASes reachable by 18 AS hops	77332	Cumulative % ASes by AS hops 18	100.0
ASes reachable by 19 AS hops	77332	Cumulative % ASes by AS hops 19	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	10	% AS's announcing span of /6	0.0001
AS's announcing span of /7	24	% AS's announcing span of /7	0.0003
AS's announcing span of /8	45	% AS's announcing span of /8	0.0006
AS's announcing span of /9	72	% AS's announcing span of /9	0.0009
AS's announcing span of /10	111	% AS's announcing span of /10	0.0015
AS's announcing span of /11	168	% AS's announcing span of /11	0.0022
AS's announcing span of /12	242	% AS's announcing span of /12	0.0032
AS's announcing span of /13	399	% AS's announcing span of /13	0.0052
AS's announcing span of /14	842	% AS's announcing span of /14	0.0110
AS's announcing span of /15	1665	% AS's announcing span of /15	0.0218
AS's announcing span of /16	1799	% AS's announcing span of /16	0.0236
AS's announcing span of /17	2468	% AS's announcing span of /17	0.0323
AS's announcing span of /18	3759	% AS's announcing span of /18	0.0492
AS's announcing span of /19	5171	% AS's announcing span of /19	0.0677
AS's announcing span of /20	7769	% AS's announcing span of /20	0.1017
AS's announcing span of /21	10383	% AS's announcing span of /21	0.1359
AS's announcing span of /22	12621	% AS's announcing span of /22	0.1652
AS's announcing span of /23	9868	% AS's announcing span of /23	0.1292
AS's announcing span of /24	18948	% AS's announcing span of /24	0.2481
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	2	% AS's announcing span of /27	0.0000
AS's announcing span of /28	2	% AS's announcing span of /28	0.0000
AS's announcing span of /29	0	% 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	1	% 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.

h h h

AS Connectivity Report	Data
AS Adjacency Count	180042
Average AS Connectivity Degree (360084/77332)	4.6563
Average AS Connectivity IN:OUT Degree	0.2650
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	577847	Report (sort by %reduction)	Report (sort by reduction)	BGP Table
Aggregation using AS Path	569364	Report (sort by %reduction)	Report (sort by reduction)	BGP Table
Aggregation using AS Origin	382138	Report (sort by %reduction)	Report (sort by reduction)	BGP Table
Maximal Aggregation	382194	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 Apr 3 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

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