Data as of Nov 9, 2026
109.104.121.0/24
No anonymizer space · no proxy exits in 30 daysArelion Sweden AB · space held by Mainframe & Cybernetic Systems Limited
Announcement
this exact prefix
RPKI valid
Announced by
Type
Unknown
Risk
30 / 100 · Medium
Recently moved
Recent change
New origin May 2026
from AS25577 Mainframe & Cybernetic Systems Limited
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | RPKI |
|---|---|---|---|---|
| 109.104.120.0/21 since Mar 2025 | AS25577 | Hosting | 3 |
Network & registry
Origin network
AS1299
SE
- Name
- Arelion Sweden AB
- Type
- Internet provider
- Registered
- Sep 1, 1993
- Domain
- arelion.com
- Website
- www.arelion.com/
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
- VPN servers
- 6
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Rotating
- First seen
- Dec 2025
- Current origin since
- May 2026 · 6 mo
- Origin networks
- 2
- Last change of origin
- May 2026
Recorded history
History
- Handoffs
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 109.104.121.0/24 | AS1299 | /24 | RIPE | RPKI valid |
Whois
Registration for this announcement
- Range
- 109.
104. 121. 0 - 109. 104. 127. 255 - Netname
- UK-FRAME-20090904
- 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
- Sep 4, 2009
- Status
- assigned
Report abuse
Abuse contact
- frank@
bec. uk - Name
- Abuse-C Role
- Handle
- AR79596-RIPE