Data as of Nov 4, 2026
151.251.8.0/21
80 residential-proxy exits · 30 daysA1 Bulgaria EAD
Residential-proxy exits
Proxy exits
80
3.9% of its addresses · 30 days
Always-on exits
1
1.3% of its exits
Spread
6 of 8
/24s with at least one exit
Providers
55
selling exits here
Oct 5, 2026 – Nov 3, 2026
Exits seen per day
2.5K observations
/24s with the most always-on exits
| /24 | Always-on exits | Proxy exits | |
|---|---|---|---|
| 151.251.8.0/24 | 1 | 15 | |
| 151.251.11.0/24 | 0 | 27 | |
| 151.251.10.0/24 | 0 | 17 | |
| 151.251.9.0/24 | 0 | 13 | |
| 151.251.12.0/24 | 0 | 7 | |
| 151.251.14.0/24 | 0 | 1 |
Proxy providers listing exits
- 2Captcha
- 711Proxy
- Ake.net
- AnyIP
- BartProxies
- BestProxy
- BirdProxies
- BottingTools
- ByteProxies
- Byteful
- CliProxy
- DataImpulse
- EZProxies
- EnigmaProxy
- FastProxy
- FlashProxy
- FloppyData
- GSocks
- Geonix
- Geonode
- GloryCloud
- GonzoProxy
- IPFly
- IPOasis
- IPPeak
- Infatica
- KindProxy
- KocerRoxy
- LemonBright
- LemonPrime
- LightningProxies
- MangoProxy
- Maskify
- NSocks
- NodeProxy
- NovProxy
- NovaProxy
- Oxylabs
- Proxiware
- Proxy-Seller
- Proxy4U
- ProxyEmpire
- ProxyGeo
- ProxyRack
- Proxying
- Proxyma
- PuraRoute
- RainProxy
- RapidProxy
- Shifter
- Smartproxy
- Thordata
- VantageProxies
- VibeProxies
- VitalExclusive
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 151.251.0.0/16 since Feb 2022 | AS8717 | Residential | 5,646 114 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 | [email protected] |
| └ 151.251.8.0/21 | 2,048 | A1--Sofia-Moskom | A1 Bulgaria EAD | ASSIGNED PA | Aug 24, 2012 | [email protected] 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
Announced by
Covering announcement 151.251.0.0/20
- Prefix
- 151.251.0.0/20
- Announced by
- AS13124 A1 Bulgaria EAD
- Type
- Residential
- Proxy exits
- 227
- Always-on exits
- 1
- RPKI
- RPKI valid
- Netname
- BG-MTELNET-20120821
- Registrant
- A1 Bulgaria EAD
- RIR
- RIPE NCC
Routing timeline
Covering aggregate above, the prefix's own history below
151.251.0.0/20
Routing history
- Pattern
- Stable
- First seen
- Mar 2020
- Current origin since
- Mar 2020 · 6.6 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 151.251.0.0/20 | AS13124 | /20 | RIPE | RPKI valid |
| 151.251.0.0/16 | AS8717 | /16 | RIPE | Another network |
IRR
Route objects on 151.251.0.0/20
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS13124 | RIPE | A1BG_RSC_SFM | SPNET-MNT AS13124-MNT | Jan 9, 2026 |
Whois
Registration for this announcement
- Range
- 151.251.0.0/16
- Netname
- BG-MTELNET-20120821
- Registrant
- A1 Bulgaria EAD
- Registrant country
- BG
- Organization
- A1 Bulgaria EAD (ORG-MN1-RIPE)
- Org country
- BG
- Type
- ALLOCATED PA
- Created
- Aug 21, 2012
- Updated
- Nov 8, 2017
- Maintainer
- RIPE-NCC-HM-MNT
- RIR
- RIPE NCC
- Country
- BG
- Delegated
- Aug 21, 2012
- Status
- assigned
Report abuse
Abuse contact
- [email protected]
- Name
- A1 Bulgaria EAD Abuse
- Handle
- AR14215-RIPE