Data as of Nov 4, 2026
81.27.80.0/22
No anonymizer space · no proxy exits in 30 daysMainframe & Cybernetic Systems Limited
Announcements
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 81.27.81.0/24 since Apr 2026 | AS25577 | Hosting | Mainframe & Cybernetic Systems Limited |
Registrations in this block
The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 81.27.80.0/22 | 1,024 | UK-FRAME-20020411 | Mainframe & Cybernetic Systems Limited (ORG-MCSL9-RIPE) · GB | ALLOCATED PA | Mar 3, 2026 | frank@ |
| └ 81.27.80.32/29 | 8 | CENTRALTECHNOLOGY02-NET | Central Technology | ASSIGNED PA | Oct 14, 2014 | frank@ via UK-FRAME-20020411 |
| └ 81.27.80.160/29 | 8 | DatingFactory-NET | Dating Factory | ASSIGNED PA | Apr 3, 2014 | frank@ via UK-FRAME-20020411 |
| └ 81.27.80.168/29 | 8 | DatingFactory-NET | Dating Factory | ASSIGNED PA | Apr 3, 2014 | frank@ via UK-FRAME-20020411 |
| └ 81.27.80.176/29 | 8 | NetworkNeeds-NET | Network Needs Ltd | ASSIGNED PA | Apr 3, 2014 | frank@ via UK-FRAME-20020411 |
| └ 81.27.80.192/27 | 32 | CDMIT-NET | CMD IT Services Ltd | ASSIGNED PA | Apr 28, 2014 | frank@ via UK-FRAME-20020411 |
| └ 81.27.80.224/28 | 16 | Copyrite-NET | Copyrite | ASSIGNED PA | May 7, 2014 | frank@ via UK-FRAME-20020411 |
| └ 81.27.80.240/28 | 16 | OpusDatum-NET | Opus Datum Bournemouth | ASSIGNED PA | May 9, 2014 | frank@ via UK-FRAME-20020411 |
| └ 81.27.81.32/27 | 32 | Fincore-NET | Fincore Limited | ASSIGNED PA | Oct 27, 2014 | frank@ via UK-FRAME-20020411 |
| └ 81.27.81.112/28 | 16 | VirtusDC-NET | Enfield DC | ASSIGNED PA | Oct 8, 2014 | frank@ via UK-FRAME-20020411 |
| └ 81.27.81.128/27 | 32 | Redblade-NET | Redblade | ASSIGNED PA | May 12, 2014 | frank@ via UK-FRAME-20020411 |
| └ 81.27.81.176/28 | 16 | OpusDatum-NET | Opus Datum Meridian Gate | ASSIGNED PA | May 9, 2014 | frank@ via UK-FRAME-20020411 |
| └ 81.27.82.144/28 | 16 | Secure-Email-Hosting-NET | unknown | ASSIGNED PA | Jun 29, 2021 | techadmin@ |
| └ 81.27.82.160/28 | 16 | Secure-Email-Hosting-NET | unknown | ASSIGNED PA | Jun 29, 2021 | techadmin@ |
| └ 81.27.82.176/28 | 16 | Secure-Email-Hosting-NET | unknown | ASSIGNED PA | Jun 29, 2021 | techadmin@ |
| └ 81.27.83.0/28 | 16 | Secure-Email-Hosting-NET | unknown | ASSIGNED PA | Jun 29, 2021 | techadmin@ |
| └ 81.27.83.96/28 | 16 | Secure-Email-Hosting-NET | unknown | ASSIGNED PA | Jun 29, 2021 | techadmin@ |
| └ 81.27.83.136/30 | 4 | TMTI-NET | unknown | ASSIGNED PA | Jun 23, 2021 | frank@ via UK-FRAME-20020411 |
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
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- Mar 2025
- Current origin since
- Mar 2025 · 1.6 yr
- Origin networks
- 1
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS25577 | RIPE | route object | C4L-MNT | Mar 11, 2025 |
IRR inside
Route objects inside
| Prefix | Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|---|
| 81.27.80.0/24 | AS25577 | RIPE | test | C4L-MNT | Aug 6, 2008 |
Whois
Registration for this announcement
- Range
- 81.
27. 80. 0/ 22 - Netname
- UK-FRAME-20020411
- Registrant
- Mainframe & Cybernetic Systems Limited
- Registrant country
- GB
- Organization
- Mainframe & Cybernetic Systems Limited (ORG-MCSL9-RIPE)
- Org country
- GB
- Type
- ALLOCATED PA
- Created
- Mar 3, 2026
- Updated
- Mar 3, 2026
- Maintainer
- lir-uk-frame-1-MNT
- RIR
- RIPE NCC
- Country
- GB
- Delegated
- Apr 11, 2002
- Status
- assigned
Report abuse
Abuse contact
- frank@
bec. uk - Name
- Abuse-C Role
- Handle
- AR79596-RIPE