Data as of Nov 15, 2026

151.251.26.0/24

10 residential-proxy exits · 30 days

A1 Bulgaria EAD

Announcement

151.251.16.0/20

RPKI valid

Announced by

AS13124

Type

Residential

Risk

0 / 100 · Low

Residential-proxy exits

Proxy exits

3.9% of its addresses · 30 days

Providers

selling exits here

Oct 16, 2026 – Nov 14, 2026

Exits seen per day

64 observations

Proxy providers listing exits

B2Proxy
BottingTools
Byteful
FastProxy
Infatica
LemonBright
NSocks
NovaProxy
Oxylabs
Shifter
Smartproxy
Thordata
ThunderProxy
VitalExclusive

Announcements

Less specific

Covering announcements

Prefix	Origin	Type	Proxy exits	Holder	RPKI
151.251.0.0/16 since Feb 2022	AS8717	Residential	6,171 104 always on	A1 Bulgaria EAD

Registrations in this block

The registry's network records over this block, widest first, each under its parent.

Range	Addresses	Netname	Holder	Type	Created	Abuse contact
151.251.0.0/16	65,536	BG-MTELNET-20120821	A1 Bulgaria EAD (ORG-MN1-RIPE) · BG	ALLOCATED PA	Aug 21, 2012	RIPE.Abuse@a1.bg
└ 151.251.24.0/21	2,048	A1-BFP24	A1 Bulgaria EAD	ASSIGNED PA	Aug 28, 2012	RIPE.Abuse@a1.bg via BG-MTELNET-20120821

A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.

Network & registry

Announcement Routing history RPKI & IRR Whois & abuse

Routing timeline

Covering aggregate above, the prefix's own history below

151.251.16.0/20

Routing history

Pattern: Stable
First seen: Jun 2017
Current origin since: Jun 2017 · 9.4 yr
Origin networks: 1

RPKI

Route origin authorizations

ROA prefix	ASN	Max len	Anchor	Verdict
151.251.16.0/20	AS13124	/20	RIPE	RPKI valid
151.251.0.0/16	AS8717	/16	RIPE	Another network

IRR

Route objects on 151.251.16.0/20

Origin	Registry	Description	Maintainer	Modified
AS13124	RIPE	A1BG_RSC_MON	SPNET-MNT AS13124-MNT	Jan 9, 2026