Data as of Nov 6, 2026
51.155.64.0/20
6 residential-proxy exits · 30 daysZen Internet Ltd
Residential-proxy exits
Proxy exits
6
0.15% of its addresses · 30 days
Spread
5 of 16
/24s with at least one exit
Providers
10
selling exits here
Oct 7, 2026 – Nov 5, 2026
Exits seen per day
75 observations
/24s with the most always-on exits
| /24 | Always-on exits | Proxy exits | |
|---|---|---|---|
| 51.155.78.0/24 | 0 | 2 | |
| 51.155.64.0/24 | 0 | 1 | |
| 51.155.68.0/24 | 0 | 1 | |
| 51.155.69.0/24 | 0 | 1 | |
| 51.155.77.0/24 | 0 | 1 |
Proxy providers listing exits
- BottingTools
- Byteful
- CatProxies
- FastProxy
- FloppyData
- IPFly
- LemonBright
- NovaProxy
- ProxyGeo
- PuraRoute
Composition
The types across the prefix's announced space, by addresses.
Announced space
Address share
Announced space
Types across the prefix
4,096 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Residential | 4,084 | >99% | 4 | |
| Business | 12 | 0.29% | 3 |
Network & registry
Announced by
Covering announcement 51.155.0.0/16
- Prefix
- 51.155.0.0/16
- Announced by
- AS13037 Zen Internet Ltd
- Type
- Residential
- Proxy exits
- 814
- Always-on exits
- 100
- RPKI
- RPKI valid
- Netname
- UK-ZEN
- Registrant
- Zen Internet Ltd
- RIR
- RIPE NCC
Origin network
AS13037
GB
- Name
- Zen Internet Ltd
- Type
- Internet provider
- Registered
- Feb 25, 2000
- Domain
- zen.co.uk
- Website
- www.zen.co.uk/
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
- Tor exits
- 1
Routing timeline
Who has announced 51.155.0.0/16
51.155.0.0/16
Routing history
- Pattern
- Stable
- First seen
- Sep 2018
- Current origin since
- Sep 2018 · 8.2 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 51.155.0.0/16 | AS13037 | /20 | RIPE | RPKI valid |
IRR
Route objects on 51.155.0.0/16
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS13037 | RIPE | Zen Internet Ltd | ZEN-MNT | Jul 4, 2019 |
Whois
Registration for this announcement
- Range
- 51.
155. 0. 0/ 16 - Netname
- UK-ZEN
- Registrant
- Zen Internet Ltd
- Registrant country
- GB
- Organization
- Zen Internet Ltd (ORG-ZIL1-RIPE)
- Org country
- GB
- Type
- LEGACY
- Created
- Sep 23, 2015
- Updated
- Jul 22, 2024
- Maintainer
- RIPE-NCC-LEGACY-MNT
- RIR
- RIPE NCC
- Country
- GB
- Delegated
- Sep 1, 1993
- Status
- assigned
Report abuse
Abuse contact
- abuse@
zen. co. uk - Name
- Abuse-C Role
- Handle
- AR18024-RIPE