BGP map for 203.187.128.0/19

203.187.128.0/19 is announced by AS3300 BT and seen by 330 peers of 23 RIPE RIS collectors, over 263 different AS paths. Its busiest upstreams are AS3491 PCCW Global (HK) Ltd. (52%), AS4637 Telstra Global (30%) and AS6939 Hurricane Electric LLC (7%). The most common path, used by 11 peers, is AS24482 AS3300.

Routes checked 12:26:44 UTC

No change in the origin, the upstreams or the number of peers since 12:26 UTC, when this site first looked at 203.187.128.0/19.

AS-path graph toward 203.187.128.0/19

origin Tier 1Tier 2edge network prefix best path: chosen by 11 of 330 peers (3%) number on a line = peers using that link RIS data up to 12:26 UTC what the colours mean 12 of 263 paths drawn 4 quieter networks left out

Download PNG View JSON Raw upstream

330collector peers

23RIS collectors

263distinct AS paths

3.7average AS hops, 2 to 6

Upstreams

Networks directly in front of the origin.

Network	Peers	Share
AS3491 PCCW Global (HK) Ltd.	170	52%
AS4637 Telstra Global	99	30%
AS6939 Hurricane Electric LLC	24	7%
AS24482 SG.GS	11	3%
AS8220 COLT COLT Technology Services Group Limited	8	2%
AS2497 Internet Initiative Japan Inc.	3	<1%
AS4635 Hong Kong Internet Exchange--Route Server 1	3	<1%
AS49544 i3Dnet i3D.net B.V	2	<1%
AS1828 Unitas Global	1	<1%
AS55720 Gigabit Hosting Sdn Bhd	1	<1%

Transit networks

Networks between the collector peer and the origin.

Network	Peers	Share
AS3491 PCCW Global (HK) Ltd.	167	51%
AS4637 Telstra Global	99	30%
AS3356 Level 3 Parent, LLC	33	10%
AS174 Cogent Communications, LLC	29	9%
AS6939 Hurricane Electric LLC	24	7%
AS2914 NTT America, Inc.	18	5%
AS1299 TWELVE99 Arelion Sweden AB	16	5%
AS6762 SEABONE-NET TELECOM ITALIA SPARKLE S.p.A.	13	4%
AS9002 RETN-AS RETN Limited	11	3%
AS3257 GTT-BACKBONE GTT Communications Inc.	10	3%

AS paths

Every distinct path the collector peers use, most common first. An ASN repeated to lengthen a path (a prepend) is shown once.

#	Path, collector peer to origin	Peers	Share	Collectors
1	AS24482 AS3300	11	3%	11
2	AS8218 AS6461 AS4637 AS3300	7	2%	6
3	AS6461 AS4637 AS3300	5	2%	5
4	AS13030 AS3491 AS3300	4	1%	4
5	AS9002 AS4637 AS3300	4	1%	4
6	AS47147 AS4637 AS3300	4	1%	4
7	AS3491 AS3300	3	<1%	3
8	AS2914 AS3491 AS3300	3	<1%	3
9	AS12779 AS3257 AS3491 AS3300	3	<1%	3
10	AS14840 AS3356 AS3491 AS3300	3	<1%	2
11	AS51185 AS6762 AS3491 AS3300	3	<1%	3
12	AS34019 AS3303 AS3491 AS3300	3	<1%	3
13	AS48362 AS9002 AS4637 AS3300	3	<1%	3
14	AS199524 AS174 AS3491 AS3300	3	<1%	3
15	AS49544 AS3300	2	<1%	2
16	AS2497 AS3300	2	<1%	2
17	AS6830 AS3491 AS3300	2	<1%	2
18	AS3320 AS4637 AS3300	2	<1%	2
19	AS1299 AS4637 AS3300	2	<1%	2
20	AS31027 AS4637 AS3300	2	<1%	1
21	AS15547 AS8220 AS3300	2	<1%	2
22	AS199524 AS4637 AS3300	2	<1%	2
23	AS59890 AS6939 AS3300	2	<1%	2
24	AS35280 AS4637 AS3300	2	<1%	2
25	AS19151 AS4637 AS3300	2	<1%	2
26	AS199524 AS3491 AS3300	2	<1%	2
27	AS25160 AS1299 AS4637 AS3300	2	<1%	2
28	AS42473 AS9002 AS4637 AS3300	2	<1%	2
29	AS49544 AS3356 AS3491 AS3300	2	<1%	1
30	AS35710 AS3320 AS3491 AS3300	2	<1%	2
31	AS47692 AS33891 AS4637 AS3300	2	<1%	2
32	AS20612 AS8758 AS8220 AS3300	2	<1%	1
33	AS271253 AS3356 AS3491 AS3300	2	<1%	1
34	AS58057 AS34549 AS2914 AS3491 AS3300	2	<1%	2
35	AS142289 AS9583 AS1299 AS3491 AS3300	2	<1%	1
36	AS51184 AS47692 AS33891 AS4637 AS3300	2	<1%	2
37	AS1828 AS3300	1	<1%	1
38	AS55720 AS3300	1	<1%	1
39	AS45489 AS3300	1	<1%	1
40	AS36236 AS3300	1	<1%	1
41	AS18106 AS3300	1	<1%	1
42	AS14907 AS3300	1	<1%	1
43	AS199524 AS3300	1	<1%	1
44	AS35280 AS3300	1	<1%	1
45	AS3257 AS4637 AS3300	1	<1%	1
46	AS3170 AS3491 AS3300	1	<1%	1
47	AS7018 AS3491 AS3300	1	<1%	1
48	AS20205 AS6939 AS3300	1	<1%	1
49	AS55720 AS6939 AS3300	1	<1%	1
50	AS852 AS3491 AS3300	1	<1%	1

50 of 263 paths shown. All of them are in the JSON.

More prefixes from AS3300

Routes seen by RIPE RIS in the 24 hours up to 16 Sep 2026, 12:26 UTC, fetched just now.