Data as of Nov 11, 2026
37.63.19.0/24
255 residential-proxy exits · 30 daysA1 Bulgaria EAD
Announced by
Type
Mobile
Risk
10 / 100 · Low
Shared address · Proxy exits nearby
Residential-proxy exits
Proxy exits
255
>99% of its addresses · 30 days
Always-on exits
3
1.2% of its exits
Providers
41
selling exits here
Oct 12, 2026 – Nov 10, 2026
Exits seen per day
73K observations
Proxy providers listing exits
- 2Captcha
- 711Proxy
- Ake.net
- AnyIP
- BirdProxies
- BottingTools
- Bright Data
- ByteProxies
- Byteful
- CoreProxy
- DataImpulse
- Decodo
- Evomi
- FlashProxy
- FloppyData
- Geonode
- GoProxies
- GonzoProxy
- IPRoyal
- Infatica
- InfiniteProxies
- Kookey
- LemonBright
- Maskify
- NSocks
- Novada
- Oxylabs
- PacketStream
- Proxy-Seller
- Proxy4U
- ProxyEmpire
- ProxyRack
- ProxyWing
- Proxying
- Proxyma
- Shifter
- Smartproxy
- StrikeProxy
- Thordata
- ThunderProxy
- Webshare
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 37.63.0.0/17 since Dec 2019 | AS8717 | Residential | 8,877 76 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 |
|---|---|---|---|---|---|---|
| 37.63.0.0/17 | 32,768 | BG-MTELNET-20120123 | A1 Bulgaria EAD (ORG-MN1-RIPE) · BG | ALLOCATED PA | Jan 23, 2012 | RIPE. |
| └ 37.63.16.0/22 | 1,024 | A1-NGN-22 | unknown | ASSIGNED PA | May 4, 2020 | RIPE. via BG-MTELNET-20120123 |
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 37.63.16.0/22
- Prefix
- 37.63.16.0/22
- Announced by
- AS12716 A1 Bulgaria EAD
- Type
- Mobile
- Proxy exits
- 1,020
- Always-on exits
- 8
- RPKI
- RPKI valid
- Netname
- A1-NGN-22
- RIR
- RIPE NCC
Registry
Holder
- Organization
- A1 Bulgaria EAD
- Handle
- ORG-MN1-RIPE
- Range
- 37.
63. 0. 0/ 17 - Registration type
- ALLOCATED PA
- Record created
- Jan 23, 2012
Origin network
AS12716
BG
- Name
- A1 Bulgaria EAD
- Type
- Internet provider
- Registered
- Oct 8, 1999
- Domain
- a1.bg
- Industry
- Computer and Information Technology
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
37.63.16.0/22
Routing history
- Pattern
- Stable
- First seen
- May 2020
- Current origin since
- Apr 2021 · 5.6 yr
- Origin networks
- 2
- Last change of origin
- Apr 2021
Recorded history
History
- Handoffs
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 37.63.16.0/22 | AS12716 | /22 | RIPE | RPKI valid |
| 37.63.0.0/17 | AS8717 | /17 | RIPE | Another network |
IRR
Route objects on 37.63.16.0/22
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS12716 | RIPE | A1BG_MSNV | SPNET-MNT AS12716-MNT | Oct 18, 2024 |
Whois
Registration for this announcement
- Range
- 37.
63. 16. 0/ 22 - Netname
- A1-NGN-22
- Registrant country
- BG
- Organization
- Not stated by the registry
- Type
- ASSIGNED PA
- Created
- May 4, 2020
- Updated
- May 4, 2020
- Maintainer
- ORBITEL-NOC
- RIR
- RIPE NCC
- Country
- BG
- Delegated
- Jan 23, 2012
- Status
- assigned
Report abuse
Abuse contact
- RIPE.
Abuse@ a1. bg - Name
- A1 Bulgaria EAD Abuse
- Handle
- AR14215-RIPE