BGP map for 203.166.160.0/22

203.166.160.0/22 is announced by AS138421 China Unicom and seen by 332 peers of 23 RIPE RIS collectors, over 250 different AS paths. All of those routes reach it through one upstream, AS4837 CHINA UNICOM China169 Backbone. The most common path, used by 10 peers, is AS24482 AS2914 AS701 AS4837 AS138421.

Routes checked 23:19:35 UTC

No change in the origin, the upstreams or the number of peers since 23:19 UTC, when this site first looked at 203.166.160.0/22.

AS-path graph toward 203.166.160.0/22

origin Tier 1Tier 2edge network prefix best path: chosen by 10 of 332 peers (3%) number on a line = peers using that link RIS data up to 23:18 UTC what the colours mean 12 of 250 paths drawn 4 quieter networks left out

Download PNG View JSON Raw upstream

332collector peers

23RIS collectors

250distinct AS paths

4.2average AS hops, 2 to 6

Upstreams

Networks directly in front of the origin.

Network	Peers	Share
AS4837 CHINA UNICOM China169 Backbone	332	100%

Transit networks

Networks between the collector peer and the origin.

Network	Peers	Share
AS4837 CHINA UNICOM China169 Backbone	331	100%
AS1299 TWELVE99 Arelion Sweden AB	84	25%
AS174 Cogent Communications, LLC	41	12%
AS701 Verizon Business	24	7%
AS5511 Opentransit Orange S.A.	23	7%
AS2914 NTT America, Inc.	17	5%
AS6939 Hurricane Electric LLC	16	5%
AS3257 GTT-BACKBONE GTT Communications Inc.	16	5%
AS6762 SEABONE-NET TELECOM ITALIA SPARKLE S.p.A.	13	4%
AS6453 TATA COMMUNICATIONS (AMERICA) INC	12	4%

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 AS2914 AS701 AS4837 AS138421	10	3%	10
2	AS8218 AS6461 AS4837 AS138421	7	2%	6
3	AS199524 AS1299 AS4837 AS138421	6	2%	6
4	AS6461 AS4837 AS138421	5	2%	5
5	AS12779 AS4837 AS138421	4	1%	4
6	AS13030 AS1299 AS4837 AS138421	4	1%	4
7	AS9002 AS5511 AS4837 AS138421	4	1%	4
8	AS14840 AS701 AS4837 AS138421	4	1%	2
9	AS47147 AS1299 AS4837 AS138421	4	1%	4
10	AS2914 AS701 AS4837 AS138421	3	<1%	3
11	AS48185 AS1299 AS4837 AS138421	3	<1%	3
12	AS34927 AS1299 AS4837 AS138421	3	<1%	3
13	AS14907 AS1299 AS4837 AS138421	3	<1%	3
14	AS51185 AS6762 AS4837 AS138421	3	<1%	3
15	AS35280 AS6453 AS4837 AS138421	3	<1%	3
16	AS34019 AS3303 AS4837 AS138421	3	<1%	3
17	AS48362 AS1299 AS4837 AS138421	3	<1%	3
18	AS3214 AS10099 AS9929 AS4837 AS138421	3	<1%	3
19	AS3257 AS4837 AS138421	2	<1%	2
20	AS6830 AS4837 AS138421	2	<1%	2
21	AS1299 AS4837 AS138421	2	<1%	2
22	AS6762 AS4837 AS138421	2	<1%	2
23	AS51184 AS4837 AS138421	2	<1%	2
24	AS2497 AS4837 AS138421	2	<1%	2
25	AS3320 AS5511 AS4837 AS138421	2	<1%	2
26	AS3491 AS174 AS4837 AS138421	2	<1%	2
27	AS62167 AS174 AS4837 AS138421	2	<1%	2
28	AS25160 AS174 AS4837 AS138421	2	<1%	2
29	AS42473 AS1299 AS4837 AS138421	2	<1%	2
30	AS49544 AS3356 AS4837 AS138421	2	<1%	1
31	AS31027 AS1299 AS4837 AS138421	2	<1%	1
32	AS49544 AS2914 AS4837 AS138421	2	<1%	2
33	AS15547 AS174 AS4837 AS138421	2	<1%	2
34	AS47692 AS33891 AS4837 AS138421	2	<1%	2
35	AS49544 AS1299 AS4837 AS138421	2	<1%	2
36	AS199524 AS174 AS4837 AS138421	2	<1%	2
37	AS59890 AS6939 AS4837 AS138421	2	<1%	2
38	AS199524 AS6762 AS4837 AS138421	2	<1%	2
39	AS58057 AS34549 AS5511 AS4837 AS138421	2	<1%	2
40	AS35710 AS3320 AS5511 AS4837 AS138421	2	<1%	2
41	AS20612 AS8758 AS3303 AS4837 AS138421	2	<1%	1
42	AS19151 AS2914 AS701 AS4837 AS138421	2	<1%	2
43	AS142289 AS9583 AS4755 AS6453 AS4837 AS138421	2	<1%	1
44	AS4837 AS138421	1	<1%	1
45	AS5511 AS4837 AS138421	1	<1%	1
46	AS680 AS4837 AS138421	1	<1%	1
47	AS58299 AS4837 AS138421	1	<1%	1
48	AS12956 AS4837 AS138421	1	<1%	1
49	AS6453 AS4837 AS138421	1	<1%	1
50	AS8455 AS4837 AS138421	1	<1%	1

50 of 250 paths shown. All of them are in the JSON.

More prefixes from AS138421

Routes seen by RIPE RIS in the 24 hours up to 15 Sep 2026, 23:18 UTC, fetched just now.