Data as of Nov 4, 2026
151.251.136.0/21
74 residential-proxy exits · 30 daysA1 Bulgaria EAD
Residential-proxy exits
Proxy exits
74
3.6% of its addresses · 30 days
Always-on exits
9
12% of its exits
Spread
7 of 8
/24s with at least one exit
Providers
75
selling exits here
Oct 5, 2026 – Nov 3, 2026
Exits seen per day
6.7K observations
/24s with the most always-on exits
| /24 | Always-on exits | Proxy exits | |
|---|---|---|---|
| 151.251.137.0/24 | 2 | 12 | |
| 151.251.143.0/24 | 2 | 12 | |
| 151.251.136.0/24 | 2 | 9 | |
| 151.251.141.0/24 | 2 | 4 | |
| 151.251.142.0/24 | 1 | 11 | |
| 151.251.139.0/24 | 0 | 16 | |
| 151.251.138.0/24 | 0 | 10 |
Proxy providers listing exits
- 2Captcha
- 711Proxy
- Ake.net
- AnyIP
- B2Proxy
- BestProxy
- BirdProxies
- BlurPath
- BottingTools
- Bright Data
- ByteProxies
- Byteful
- CliProxy
- DataImpulse
- Decodo
- EZProxies
- EnigmaProxy
- Evomi
- FastProxy
- FlashProxy
- FlexyProxies
- FloppyData
- GSocks
- Geonix
- Geonode
- GloryCloud
- GonzoProxy
- IPFly
- IPOasis
- IPPeak
- IPRoyal
- Infatica
- InfiniteProxies
- KindProxy
- KocerRoxy
- Kookey
- LemonBright
- LemonLabs
- LightningProxies
- LudaxProxy
- MangoProxy
- Maskify
- NSocks
- NiuProxy
- NodeMaven
- NodeProxy
- NovaProxy
- Novada
- Oxylabs
- Proxio
- Proxiware
- Proxy-Seller
- Proxy4U
- ProxyEmpire
- ProxyGeo
- ProxyHat
- ProxyRack
- ProxyWing
- Proxyma
- PuraRoute
- RainProxy
- RapidProxy
- RolaProxy
- Shifter
- Smartproxy
- SwiftProxy
- TalorData
- Thordata
- ThunderProxy
- VantageProxies
- VibeProxies
- VitalData
- VitalExclusive
- VitalProxy
- YumiProxy
Announcements
More specific
Announcements inside
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 151.251.136.0/22 since Sep 2023 | AS29580 | Residential | 47 4 always on | A1 Bulgaria EAD | |
| 151.251.141.0/24 since Jul 2024 | AS29580 | Residential | 4 2 always on | A1 Bulgaria EAD | |
| 151.251.142.0/23 since Mar 2024 | AS29580 | Residential | 23 3 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] |
| └ 151.251.136.0/21 | 2,048 | A1BG-Fiber-Power136 | A1 Bulgaria EAD | ASSIGNED PA | Sep 20, 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 151.251.0.0/16
- Prefix
- 151.251.0.0/16
- Announced by
- AS8717 A1 Bulgaria EAD
- Type
- Residential
- Proxy exits
- 5,646
- Always-on exits
- 114
- RPKI
- RPKI valid
- Netname
- BG-MTELNET-20120821
- Registrant
- A1 Bulgaria EAD
- RIR
- RIPE NCC
Routing timeline
Who has announced 151.251.0.0/16
151.251.0.0/16
Routing history
- Pattern
- Rotating
- First seen
- Aug 2012
- Current origin since
- Feb 2022 · 4.7 yr
- Origin networks
- 2
- Last change of origin
- Feb 2022
Recorded history
History
- Handoffs
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 151.251.0.0/16 | AS8717 | /16 | RIPE | RPKI valid |
IRR
Route objects on 151.251.0.0/16
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS8717 | RIPE | A1 BG Net | SPNET-MNT AS13124-MNT | Nov 28, 2022 |
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