Autonomous system
AS204536 TSFY
Residential ARIN Cable/DSL/ISP
Summary
Nuacom
isp residential ireland cable
TSFY is operated by TSFY Ltd, which provides broadband services under the Nuacom brand.
What it's used for
- The address space carries residential broadband traffic, evidenced by the PeeringDB classification as "Cable/DSL/ISP" and the operator's public identity as Nuacom.
- The AS announces 1024 IPv4 addresses across 2 prefixes in Ireland, while maintaining 13 observed neighbours; this ratio of limited address space against a moderate number of peers indicates a regional access provider rather than a transit hub.
- Traffic from this AS consists of subscriber eyeballs for residential cable and DSL customers in the Maynooth, Co. Kildare area, as TSFY Ltd operates the Nuacom ISP service.
Notable
- Registrants for both announced prefixes are listed as TSFY Ltd, matching the AS holder and confirming consistent ownership of the inventory.
- The address inventory is compact, consisting of two contiguous /23 blocks (185.87.180.0/23 and 185.87.182.0/23) registered under the netname IE-TSFYLTD-20180221.
- TSFY Ltd is also known for IT consulting and app development, but the AS specifically supports its Nuacom broadband operations.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
Recorded at 2 exchanges in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Internet Neutral Exchange Association CLG - LAN1 | Dublin, Ireland | 185.6.36.134 |
| Internet Neutral Exchange Association CLG - LAN2 | Dublin, Ireland | 194.88.240.72 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-31, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 2 prefixes · 1.02K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| IE | Ireland | 2 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS204536- Registry name
- tsfy
- Registrant
- ie-tsfyltd-1-mnt
- Abuse contact
- info@nuacom.ie
- Registered
- 2018-02-21
- Last changed
- 2018-09-04
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- TSFY
- Also known as
- Nuacom
- Network type
- Cable/DSL/ISP
- Scope
- Global
- Traffic ratio
- Balanced
- Peering policy
- Open
- IRR as-set
RIPE::AS-NUACOM- Present at
- 2 exchanges
- Facilities
- 1 facilities
- Website
- https://www.nuacom.ie/
PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.
Routing security
RPKI and IRR
- RPKI
- 100% valid · 2 valid, 0 with no ROA
- ROAs
- 6 authorising AS204536
- ASPA
- no ASPA record
- IRR
- 100% registered · 2 of 2 announcements
- Route objects
- 6 naming AS204536
Reputation
Classification and threat
Residential Fixed-line consumer ISP. Addresses here are homes.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 447 networks and 1,845 prefixes, as published 2026-10-31. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere