Data as of Nov 12, 2026

37.187.72.0/21

1 anonymizer address · 0.05% · Tor exit1 residential-proxy exit · 30 days

OVH SAS

Announcement

37.187.0.0/16

RPKI valid

Announced by

AS16276

Type

Hosting

>99% of it

Residential-proxy exits

Proxy exits

0.05% of its addresses · 30 days

Oct 13, 2026 – Nov 11, 2026

Exits seen per day

40 observations

IPv4 market

Path

1 · Holder

OVH SAS

record created Mar 22, 2013

2 · Leased from

not leased

3 · Announced by

AS16276 OVH SAS

since Apr 2013 · 13.6 yr ago

4 · Use

named Tor

Hosting

Operators, sellers and brokers

Tor

Name	Parent	In 37.187.72.0/21	/24s
Tor	The Tor Project	10.05%	1

Composition

The types across the prefix's announced space, by addresses.

Announced space

Address share

Announced space

Types across the prefix

2,048 addresses

Type	Addresses	Share	Ranges
Hosting	2,047	>99%	2
Tor exitanonymizer	1	0.05%	1

Network & registry

Announcement Routing history RPKI & IRR Whois & abuse

Routing timeline

Who has announced 37.187.0.0/16

37.187.0.0/16

Routing history

Pattern: Stable
First seen: Apr 2013
Current origin since: Apr 2013 · 14 yr
Origin networks: 1

RPKI

Route origin authorizations

ROA prefix	ASN	Max len	Anchor	Verdict
37.187.0.0/16	AS16276	/16	RIPE	RPKI valid

IRR

Route objects on 37.187.0.0/16

Origin	Registry	Description	Maintainer	Modified
AS16276	RIPE	OVH	OVH-MNT	Mar 22, 2013