BGP map for 223.193.40.0/21

223.193.40.0/21 is announced by AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS) and seen by 331 peers of 23 RIPE RIS collectors, over 256 different AS paths. Its busiest upstreams are AS174 Cogent Communications, LLC (52%), AS3491 PCCW Global (HK) Ltd. (32%) and AS4134 No.31,Jin-rong Street (6%). The most common path, used by 10 peers, is AS24482 AS2914 AS3491 AS7497.

Routes checked 04:15:15 UTC

No change in the origin, the upstreams or the number of peers since 04:15 UTC, when this site first looked at 223.193.40.0/21.

AS-path graph toward 223.193.40.0/21

origin Tier 1Tier 2edge network prefix best path: chosen by 10 of 331 peers (3%) number on a line = peers using that link RIS data up to 04:14 UTC what the colours mean 12 of 256 paths drawn 3 quieter networks left out

Download PNG View JSON Raw upstream

331collector peers

23RIS collectors

256distinct AS paths

3.6average AS hops, 2 to 5

Upstreams

Networks directly in front of the origin.

Network	Peers	Share
AS174 Cogent Communications, LLC	171	52%
AS3491 PCCW Global (HK) Ltd.	106	32%
AS4134 No.31,Jin-rong Street	21	6%
AS6939 Hurricane Electric LLC	19	6%
AS20965 GEANT GEANT Vereniging	4	1%
AS9808 China Mobile Communications Group Co., Ltd.	3	<1%
AS1103 SURFNET-NL SURF B.V.	2	<1%
AS4837 CHINA UNICOM China169 Backbone	2	<1%
AS23855 Singapore Advanced Research and Education Network	1	<1%
AS7660 Asia Pacific Advanced Network - Japan	1	<1%

Transit networks

Networks between the collector peer and the origin.

Network	Peers	Share
AS174 Cogent Communications, LLC	171	52%
AS3491 PCCW Global (HK) Ltd.	103	31%
AS1299 TWELVE99 Arelion Sweden AB	36	11%
AS2914 NTT America, Inc.	22	7%
AS4134 No.31,Jin-rong Street	21	6%
AS6939 Hurricane Electric LLC	19	6%
AS3356 Level 3 Parent, LLC	12	4%
AS6461 Zayo Bandwidth	10	3%
AS6762 SEABONE-NET TELECOM ITALIA SPARKLE S.p.A.	7	2%
AS3320 DTAG Deutsche Telekom AG	6	2%

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 AS3491 AS7497	10	3%	10
2	AS199524 AS174 AS7497	5	2%	5
3	AS13030 AS3491 AS7497	4	1%	4
4	AS9002 AS3491 AS7497	4	1%	4
5	AS12779 AS174 AS7497	4	1%	4
6	AS14840 AS174 AS7497	4	1%	2
7	AS199524 AS3491 AS7497	4	1%	4
8	AS8218 AS6461 AS174 AS7497	4	1%	3
9	AS3491 AS7497	3	<1%	3
10	AS6461 AS3491 AS7497	3	<1%	3
11	AS2914 AS3491 AS7497	3	<1%	3
12	AS49544 AS3491 AS7497	3	<1%	3
13	AS34019 AS4134 AS7497	3	<1%	3
14	AS25091 AS4134 AS7497	3	<1%	3
15	AS3214 AS58807 AS9808 AS7497	3	<1%	3
16	AS8218 AS6461 AS3491 AS7497	3	<1%	3
17	AS3257 AS174 AS7497	2	<1%	2
18	AS6830 AS174 AS7497	2	<1%	2
19	AS3320 AS3491 AS7497	2	<1%	2
20	AS62167 AS174 AS7497	2	<1%	2
21	AS25160 AS174 AS7497	2	<1%	2
22	AS1299 AS174 AS7497	2	<1%	2
23	AS8529 AS6939 AS7497	2	<1%	2
24	AS14907 AS3491 AS7497	2	<1%	2
25	AS15547 AS174 AS7497	2	<1%	2
26	AS6461 AS174 AS7497	2	<1%	2
27	AS59890 AS6939 AS7497	2	<1%	2
28	AS271253 AS174 AS7497	2	<1%	1
29	AS19151 AS174 AS7497	2	<1%	2
30	AS917 AS60068 AS174 AS7497	2	<1%	2
31	AS55720 AS23764 AS4134 AS7497	2	<1%	1
32	AS34927 AS1299 AS174 AS7497	2	<1%	2
33	AS58057 AS34549 AS174 AS7497	2	<1%	2
34	AS49544 AS3356 AS3491 AS7497	2	<1%	1
35	AS31027 AS1299 AS174 AS7497	2	<1%	1
36	AS35710 AS3320 AS3491 AS7497	2	<1%	2
37	AS51185 AS6762 AS174 AS7497	2	<1%	2
38	AS35280 AS3356 AS174 AS7497	2	<1%	2
39	AS51184 AS1764 AS174 AS7497	2	<1%	2
40	AS48362 AS1764 AS174 AS7497	2	<1%	2
41	AS47692 AS2914 AS3491 AS7497	2	<1%	2
42	AS47147 AS1299 AS174 AS7497	2	<1%	2
43	AS20612 AS9044 AS174 AS7497	2	<1%	1
44	AS142289 AS9583 AS1299 AS3491 AS7497	2	<1%	1
45	AS1103 AS7497	1	<1%	1
46	AS31742 AS174 AS7497	1	<1%	1
47	AS1828 AS3491 AS7497	1	<1%	1
48	AS6424 AS174 AS7497	1	<1%	1
49	AS39122 AS174 AS7497	1	<1%	1
50	AS3170 AS174 AS7497	1	<1%	1

50 of 256 paths shown. All of them are in the JSON.

More prefixes from AS7497

Routes seen by RIPE RIS in the 24 hours up to 16 Sep 2026, 04:14 UTC, fetched just now.