BGP map for 178.21.171.0/24

178.21.171.0/24 is announced by AS199081 LANCOM and seen by 329 peers of 23 RIPE RIS collectors, over 262 different AS paths. Its busiest upstreams are AS174 Cogent Communications, LLC (43%), AS3356 Level 3 Parent, LLC (32%) and AS3257 GTT-BACKBONE (19%). The most common path, used by 6 peers, is AS199524 AS174 AS199081.

Routes checked 09:09:28 UTC

No change in the origin, the upstreams or the number of peers since 09:09 UTC, when this site first looked at 178.21.171.0/24.

AS-path graph toward 178.21.171.0/24

origin Tier 1Tier 2edge network prefix best path: chosen by 6 of 329 peers (2%) number on a line = peers using that link RIS data up to 09:09 UTC what the colours mean 12 of 262 paths drawn 5 quieter networks left out

Download PNG View JSON Raw upstream

329collector peers

23RIS collectors

262distinct AS paths

3.5average AS hops, 2 to 6

Upstreams

Networks directly in front of the origin.

Network	Peers	Share
AS174 Cogent Communications, LLC	140	43%
AS3356 Level 3 Parent, LLC	105	32%
AS3257 GTT-BACKBONE GTT Communications Inc.	62	19%
AS6939 Hurricane Electric LLC	15	5%
AS50869 FREEIX-REMOTE IPng Networks GmbH	2	<1%
AS197580 AS-CONNECTICORE Connecticore Telecommunications Information Technology S.A	1	<1%
AS56457 FASTPATH FASTPATH IKE	1	<1%
AS51185 MAINSTREAMING-AS MainStreaming SpA	1	<1%
AS8280 SYNAPSECOM-AS SYNAPSECOM S.A. Provider of Telecommunications and Internet Services	1	<1%
AS286 KPN GTT Communications Inc.	1	<1%

Transit networks

Networks between the collector peer and the origin.

Network	Peers	Share
AS174 Cogent Communications, LLC	140	43%
AS3356 Level 3 Parent, LLC	105	32%
AS3257 GTT-BACKBONE GTT Communications Inc.	61	19%
AS1299 TWELVE99 Arelion Sweden AB	29	9%
AS2914 NTT America, Inc.	23	7%
AS6939 Hurricane Electric LLC	15	5%
AS6461 Zayo Bandwidth	11	3%
AS3320 DTAG Deutsche Telekom AG	6	2%
AS1764 NEXTLAYER-AS Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH	6	2%
AS25091 IP-Max IP-Max SA	5	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	AS199524 AS174 AS199081	6	2%	6
2	AS24482 AS2914 AS3257 AS199081	6	2%	6
3	AS6461 AS174 AS199081	5	2%	5
4	AS49544 AS3356 AS199081	5	2%	4
5	AS8218 AS6461 AS174 AS199081	5	2%	5
6	AS24482 AS2914 AS3356 AS199081	5	2%	5
7	AS9002 AS3257 AS199081	4	1%	4
8	AS12779 AS3257 AS199081	4	1%	4
9	AS13030 AS1299 AS174 AS199081	4	1%	4
10	AS48185 AS3356 AS199081	3	<1%	3
11	AS35280 AS3356 AS199081	3	<1%	3
12	AS25091 AS3356 AS199081	3	<1%	3
13	AS199524 AS3257 AS199081	3	<1%	3
14	AS6830 AS174 AS199081	2	<1%	2
15	AS25160 AS174 AS199081	2	<1%	2
16	AS1299 AS174 AS199081	2	<1%	2
17	AS50628 AS3356 AS199081	2	<1%	2
18	AS14840 AS3356 AS199081	2	<1%	1
19	AS14840 AS174 AS199081	2	<1%	2
20	AS31027 AS3356 AS199081	2	<1%	1
21	AS3491 AS174 AS199081	2	<1%	2
22	AS15547 AS174 AS199081	2	<1%	2
23	AS6762 AS174 AS199081	2	<1%	2
24	AS59890 AS3356 AS199081	2	<1%	2
25	AS271253 AS3356 AS199081	2	<1%	1
26	AS19151 AS174 AS199081	2	<1%	2
27	AS917 AS60068 AS174 AS199081	2	<1%	2
28	AS58057 AS34549 AS174 AS199081	2	<1%	2
29	AS35710 AS3320 AS3257 AS199081	2	<1%	2
30	AS14907 AS2914 AS3356 AS199081	2	<1%	2
31	AS51184 AS1764 AS174 AS199081	2	<1%	2
32	AS48362 AS1764 AS174 AS199081	2	<1%	2
33	AS34019 AS25091 AS3356 AS199081	2	<1%	2
34	AS47692 AS2914 AS3257 AS199081	2	<1%	2
35	AS47147 AS1299 AS174 AS199081	2	<1%	2
36	AS20612 AS9044 AS174 AS199081	2	<1%	1
37	AS142289 AS9583 AS4755 AS6453 AS174 AS199081	2	<1%	1
38	AS197580 AS199081	1	<1%	1
39	AS56457 AS199081	1	<1%	1
40	AS51185 AS199081	1	<1%	1
41	AS3257 AS199081	1	<1%	1
42	AS6894 AS174 AS199081	1	<1%	1
43	AS31742 AS174 AS199081	1	<1%	1
44	AS35266 AS3257 AS199081	1	<1%	1
45	AS286 AS3257 AS199081	1	<1%	1
46	AS28792 AS3257 AS199081	1	<1%	1
47	AS3320 AS3257 AS199081	1	<1%	1
48	AS2914 AS3356 AS199081	1	<1%	1
49	AS3491 AS3356 AS199081	1	<1%	1
50	AS62167 AS3356 AS199081	1	<1%	1

50 of 262 paths shown. All of them are in the JSON.

More prefixes from AS199081

Routes seen by RIPE RIS in the 24 hours up to 16 Sep 2026, 09:09 UTC, fetched just now.