BGP map for 203.205.40.0/21

203.205.40.0/21 is announced by AS45903 CMC Telecom Infrastructure Company and seen by 357 peers of 23 RIPE RIS collectors, over 272 different AS paths. Its busiest upstreams are AS4766 Korea Telecom (44%), AS3491 PCCW Global (HK) Ltd. (15%) and AS24482 SG.GS (3%). The most common path, used by 10 peers, is AS24482 AS45903.

Routes checked 14:02:55 UTC

No change in the origin, the upstreams or the number of peers since 12:17 UTC on 26 Oct, when this site first looked at 203.205.40.0/21.

AS-path graph toward 203.205.40.0/21

origin Tier 1Tier 2edge network prefix best path: chosen by 10 of 357 peers (3%) number on a line = peers using that link RIS data up to 14:02 UTC what the colours mean 12 of 272 paths drawn 5 quieter networks left out

View JSON Raw upstream

357collector peers

23RIS collectors

272distinct AS paths

3.2average AS hops, 1 to 5

Upstreams

Networks directly in front of the origin.

Network	Peers	Share
AS4766 Korea Telecom	156	44%
AS3491 PCCW Global (HK) Ltd.	52	15%
AS24482 SG.GS	10	3%
AS14840 BR.Digital Telecom	5	1%
AS34019 HIVANE Hivane Association	5	1%
AS47147 AS-ANX Anexia Cloud Solutions GmbH	4	1%
AS2914 NTT America, Inc.	4	1%
AS25091 IP-Max IP-Max SA	4	1%
AS48362 TKSWF-AS Stadtwerke Feldkirch	4	1%
AS35280 F5 F5 Networks SARL	4	1%

Transit networks

Networks between the collector peer and the origin.

Network	Peers	Share
AS4766 Korea Telecom	156	44%
AS6939 Hurricane Electric LLC	109	31%
AS3491 PCCW Global (HK) Ltd.	49	14%
AS1299 TWELVE99 Arelion Sweden AB	10	3%
AS3356 Level 3 Parent, LLC	9	3%
AS174 Cogent Communications, LLC	9	3%
AS6762 SEABONE-NET TELECOM ITALIA SPARKLE S.p.A.	4	1%
AS8758 IWAY Iway AG	3	<1%
AS4635 Hong Kong Internet Exchange--Route Server 1	3	<1%
AS37468 Angola Cables	3	<1%

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 AS45903	10	3%	10
2	AS6939 AS4766 AS45903	10	3%	10
3	AS8218 AS6939 AS4766 AS45903	7	2%	6
4	AS14840 AS45903	4	1%	2
5	AS47147 AS45903	4	1%	4
6	AS6461 AS3491 AS45903	4	1%	4
7	AS2914 AS45903	3	<1%	3
8	AS3491 AS45903	3	<1%	3
9	AS12779 AS45903	3	<1%	3
10	AS49544 AS45903	3	<1%	3
11	AS34019 AS45903	3	<1%	3
12	AS25091 AS45903	3	<1%	3
13	AS48362 AS45903	3	<1%	3
14	AS13030 AS3491 AS45903	3	<1%	3
15	AS9002 AS3491 AS45903	3	<1%	3
16	AS199524 AS3491 AS45903	3	<1%	3
17	AS48185 AS6939 AS4766 AS45903	3	<1%	3
18	AS34927 AS6939 AS4766 AS45903	3	<1%	2
19	AS25160 AS45903	2	<1%	2
20	AS35710 AS45903	2	<1%	2
21	AS8529 AS45903	2	<1%	2
22	AS199524 AS45903	2	<1%	2
23	AS35280 AS45903	2	<1%	2
24	AS212483 AS45903	2	<1%	1
25	AS15547 AS45903	2	<1%	2
26	AS51184 AS45903	2	<1%	2
27	AS47692 AS45903	2	<1%	2
28	AS3257 AS3491 AS45903	2	<1%	2
29	AS6830 AS3491 AS45903	2	<1%	2
30	AS3320 AS3491 AS45903	2	<1%	2
31	AS1299 AS4766 AS45903	2	<1%	2
32	AS142289 AS9583 AS45903	2	<1%	1
33	AS31027 AS6797 AS45903	2	<1%	1
34	AS20612 AS8758 AS45903	2	<1%	1
35	AS917 AS60068 AS4766 AS45903	2	<1%	2
36	AS62167 AS6939 AS4766 AS45903	2	<1%	2
37	AS6424 AS6939 AS4766 AS45903	2	<1%	2
38	AS42473 AS6939 AS4766 AS45903	2	<1%	2
39	AS3214 AS6939 AS4766 AS45903	2	<1%	2
40	AS49544 AS3356 AS3491 AS45903	2	<1%	1
41	AS51185 AS6939 AS4766 AS45903	2	<1%	2
42	AS51185 AS6762 AS3491 AS45903	2	<1%	2
43	AS59890 AS6939 AS4766 AS45903	2	<1%	2
44	AS202032 AS6939 AS4766 AS45903	2	<1%	2
45	AS271253 AS3356 AS4766 AS45903	2	<1%	1
46	AS19151 AS6939 AS4766 AS45903	2	<1%	2
47	AS45903	1	<1%	1
48	AS14630 AS45903	1	<1%	1
49	AS34549 AS45903	1	<1%	1
50	AS37721 AS45903	1	<1%	1

50 of 272 paths shown. All of them are in the JSON.

More prefixes from AS45903

Routes seen by RIPE RIS in the 24 hours up to 8 Nov 2026, 14:02 UTC, fetched just now.