BGP map for 204.115.128.0/21

204.115.128.0/21 is announced by AS21859 Zenlayer Inc and seen by 321 peers of 23 RIPE RIS collectors, over 249 different AS paths. Its busiest upstreams are AS4229 Zenlayer Inc (76%), AS6939 Hurricane Electric LLC (8%) and AS3303 SWISSCOM (4%). The most common path, used by 11 peers, is AS24482 AS21859.

Routes checked 21:23:40 UTC

No change in the origin, the upstreams or the number of peers since 21:23 UTC, when this site first looked at 204.115.128.0/21.

AS-path graph toward 204.115.128.0/21

origin Tier 1Tier 2transitedge network prefix best path: chosen by 11 of 321 peers (3%) number on a line = peers using that link RIS data up to 21:22 UTC what the colours mean 12 of 249 paths drawn 3 quieter networks left out

Download PNG View JSON Raw upstream

321collector peers

23RIS collectors

249distinct AS paths

4.4average AS hops, 2 to 7

Upstreams

Networks directly in front of the origin.

Network	Peers	Share
AS4229 Zenlayer Inc	245	76%
AS6939 Hurricane Electric LLC	26	8%
AS3303 SWISSCOM Swisscom (Schweiz) AG	12	4%
AS24482 SG.GS	11	3%
AS8220 COLT COLT Technology Services Group Limited	6	2%
AS137409 GSL Networks Pty LTD	3	<1%
AS49544 i3Dnet i3D.net B.V	2	<1%
AS19151 BroadbandONE, LLC	2	<1%
AS6057 Administracion Nacional de Telecomunicaciones	2	<1%
AS7195 EDGEUNO S.A.S	2	<1%

Transit networks

Networks between the collector peer and the origin.

Network	Peers	Share
AS4229 Zenlayer Inc	245	76%
AS3257 GTT-BACKBONE GTT Communications Inc.	239	74%
AS1299 TWELVE99 Arelion Sweden AB	52	16%
AS6939 Hurricane Electric LLC	26	8%
AS3356 Level 3 Parent, LLC	20	6%
AS174 Cogent Communications, LLC	15	5%
AS2914 NTT America, Inc.	13	4%
AS3303 SWISSCOM Swisscom (Schweiz) AG	12	4%
AS6461 Zayo Bandwidth	8	2%
AS6762 SEABONE-NET TELECOM ITALIA SPARKLE S.p.A.	7	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 AS21859	11	3%	11
2	AS8218 AS6461 AS3257 AS4229 AS21859	7	2%	6
3	AS199524 AS3257 AS4229 AS21859	6	2%	6
4	AS6461 AS3257 AS4229 AS21859	5	2%	5
5	AS9002 AS3257 AS4229 AS21859	4	1%	4
6	AS13030 AS1299 AS3257 AS4229 AS21859	4	1%	4
7	AS34019 AS3303 AS21859	3	<1%	3
8	AS2914 AS3257 AS4229 AS21859	3	<1%	3
9	AS3491 AS3257 AS4229 AS21859	3	<1%	3
10	AS25091 AS3257 AS4229 AS21859	3	<1%	3
11	AS34927 AS1299 AS3257 AS4229 AS21859	3	<1%	3
12	AS14840 AS3356 AS3257 AS4229 AS21859	3	<1%	2
13	AS14907 AS1299 AS3257 AS4229 AS21859	3	<1%	3
14	AS49544 AS21859	2	<1%	2
15	AS19151 AS21859	2	<1%	2
16	AS8529 AS6939 AS21859	2	<1%	2
17	AS15547 AS3303 AS21859	2	<1%	2
18	AS59890 AS6939 AS21859	2	<1%	2
19	AS917 AS60068 AS4229 AS21859	2	<1%	2
20	AS6830 AS3257 AS4229 AS21859	2	<1%	2
21	AS3320 AS3257 AS4229 AS21859	2	<1%	2
22	AS62167 AS3257 AS4229 AS21859	2	<1%	2
23	AS1299 AS3257 AS4229 AS21859	2	<1%	2
24	AS6762 AS3257 AS4229 AS21859	2	<1%	2
25	AS20612 AS8758 AS8220 AS21859	2	<1%	1
26	AS2497 AS3257 AS4229 AS21859	2	<1%	2
27	AS25160 AS2914 AS3257 AS4229 AS21859	2	<1%	2
28	AS58057 AS34549 AS3257 AS4229 AS21859	2	<1%	2
29	AS49544 AS3356 AS3257 AS4229 AS21859	2	<1%	1
30	AS31027 AS1299 AS3257 AS4229 AS21859	2	<1%	1
31	AS35710 AS3320 AS3257 AS4229 AS21859	2	<1%	2
32	AS49544 AS2914 AS3257 AS4229 AS21859	2	<1%	2
33	AS199524 AS1299 AS3257 AS4229 AS21859	2	<1%	2
34	AS51184 AS1764 AS3257 AS4229 AS21859	2	<1%	2
35	AS48362 AS1764 AS3257 AS4229 AS21859	2	<1%	2
36	AS47692 AS2914 AS3257 AS4229 AS21859	2	<1%	2
37	AS51185 AS6762 AS3257 AS4229 AS21859	2	<1%	2
38	AS47147 AS1299 AS3257 AS4229 AS21859	2	<1%	2
39	AS271253 AS3356 AS3257 AS4229 AS21859	2	<1%	1
40	AS142289 AS9583 AS4755 AS6453 AS3257 AS4229 AS21859	2	<1%	1
41	AS1828 AS21859	1	<1%	1
42	AS17639 AS21859	1	<1%	1
43	AS6057 AS21859	1	<1%	1
44	AS36236 AS21859	1	<1%	1
45	AS51185 AS21859	1	<1%	1
46	AS18106 AS21859	1	<1%	1
47	AS207841 AS137409 AS21859	1	<1%	1
48	AS20205 AS6939 AS21859	1	<1%	1
49	AS55720 AS6939 AS21859	1	<1%	1
50	AS37721 AS6939 AS21859	1	<1%	1

50 of 249 paths shown. All of them are in the JSON.

More prefixes from AS21859

Routes seen by RIPE RIS in the 24 hours up to 15 Sep 2026, 21:22 UTC, fetched just now.