BGP map for 2a0b:21c1:1000::/36

2a0b:21c1:1000::/36 is announced by AS21859 Zenlayer Inc and seen by 336 peers of 23 RIPE RIS collectors, over 248 different AS paths. Its busiest upstreams are AS174 Cogent Communications, LLC (32%), AS6939 Hurricane Electric LLC (30%) and AS3257 GTT-BACKBONE (18%). The most common path, used by 9 peers, is AS6939 AS21859.

Routes checked 01:43:59 UTC

No change in the origin, the upstreams or the number of peers since 01:43 UTC, when this site first looked at 2a0b:21c1:1000::/36.

AS-path graph toward 2a0b:21c1:1000::/36

origin Tier 1Tier 2edge network prefix best path: chosen by 9 of 336 peers (3%) number on a line = peers using that link RIS data up to 01:43 UTC what the colours mean 12 of 248 paths drawn 3 quieter networks left out

Download PNG View JSON Raw upstream

336collector peers

23RIS collectors

248distinct AS paths

3.3average AS hops, 2 to 5

Upstreams

Networks directly in front of the origin.

Network	Peers	Share
AS174 Cogent Communications, LLC	107	32%
AS6939 Hurricane Electric LLC	102	30%
AS3257 GTT-BACKBONE GTT Communications Inc.	60	18%
AS6762 SEABONE-NET TELECOM ITALIA SPARKLE S.p.A.	40	12%
AS25091 IP-Max IP-Max SA	7	2%
AS34019 HIVANE Hivane Association	5	1%
AS12779 ITGATE IT.Gate S.p.A.	4	1%
AS49544 i3Dnet i3D.net B.V	2	<1%
AS51185 MAINSTREAMING-AS MainStreaming SpA	1	<1%
AS5394 Unidata UNIDATA S.p.A.	1	<1%

Transit networks

Networks between the collector peer and the origin.

Network	Peers	Share
AS174 Cogent Communications, LLC	107	32%
AS6939 Hurricane Electric LLC	93	28%
AS3257 GTT-BACKBONE GTT Communications Inc.	58	17%
AS6762 SEABONE-NET TELECOM ITALIA SPARKLE S.p.A.	38	11%
AS1299 TWELVE99 Arelion Sweden AB	22	7%
AS2914 NTT America, Inc.	19	6%
AS6461 Zayo Bandwidth	8	2%
AS3356 Level 3 Parent, LLC	6	2%
AS9002 RETN-AS RETN Limited	5	1%
AS1764 NEXTLAYER-AS Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH	4	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	AS6939 AS21859	9	3%	9
2	AS24482 AS2914 AS3257 AS21859	6	2%	6
3	AS9002 AS3257 AS21859	5	1%	5
4	AS6461 AS174 AS21859	5	1%	5
5	AS24482 AS2914 AS6762 AS21859	5	1%	5
6	AS8218 AS6461 AS174 AS21859	5	1%	5
7	AS12779 AS21859	4	1%	4
8	AS58057 AS6939 AS21859	4	1%	3
9	AS13030 AS1299 AS174 AS21859	4	1%	4
10	AS34019 AS21859	3	<1%	3
11	AS25091 AS21859	3	<1%	3
12	AS199524 AS3257 AS21859	3	<1%	3
13	AS14907 AS6939 AS21859	3	<1%	3
14	AS34927 AS6939 AS21859	3	<1%	2
15	AS14840 AS174 AS21859	3	<1%	2
16	AS3214 AS6939 AS21859	3	<1%	3
17	AS199524 AS6939 AS21859	3	<1%	3
18	AS15547 AS6939 AS21859	3	<1%	3
19	AS6762 AS21859	2	<1%	2
20	AS3257 AS21859	2	<1%	2
21	AS49544 AS21859	2	<1%	2
22	AS19151 AS174 AS21859	2	<1%	2
23	AS2914 AS6762 AS21859	2	<1%	2
24	AS37721 AS174 AS21859	2	<1%	1
25	AS8529 AS6939 AS21859	2	<1%	2
26	AS35710 AS6939 AS21859	2	<1%	2
27	AS1299 AS174 AS21859	2	<1%	2
28	AS6667 AS3257 AS21859	2	<1%	2
29	AS47692 AS6939 AS21859	2	<1%	2
30	AS51184 AS6939 AS21859	2	<1%	2
31	AS6830 AS174 AS21859	2	<1%	2
32	AS25160 AS174 AS21859	2	<1%	2
33	AS199524 AS174 AS21859	2	<1%	2
34	AS62167 AS6939 AS21859	2	<1%	2
35	AS202032 AS6939 AS21859	2	<1%	2
36	AS28917 AS3257 AS21859	2	<1%	1
37	AS59890 AS6939 AS21859	2	<1%	2
38	AS3491 AS174 AS21859	2	<1%	2
39	AS1403 AS577 AS6939 AS21859	2	<1%	1
40	AS49544 AS3356 AS6762 AS21859	2	<1%	1
41	AS49544 AS2914 AS6762 AS21859	2	<1%	2
42	AS31027 AS1299 AS3257 AS21859	2	<1%	1
43	AS48362 AS1764 AS174 AS21859	2	<1%	2
44	AS8218 AS6461 AS3257 AS21859	2	<1%	2
45	AS12859 AS1299 AS174 AS21859	2	<1%	1
46	AS47147 AS1299 AS174 AS21859	2	<1%	2
47	AS917 AS60068 AS174 AS21859	2	<1%	2
48	AS20612 AS9044 AS174 AS21859	2	<1%	1
49	AS206271 AS60707 AS12735 AS6762 AS21859	2	<1%	1
50	AS142289 AS9583 AS2914 AS6762 AS21859	2	<1%	1

50 of 248 paths shown. All of them are in the JSON.

More prefixes from AS21859

Routes seen by RIPE RIS in the 24 hours up to 16 Sep 2026, 01:43 UTC, fetched just now.