Autonomous system
AS42004 ULGRP-AS
Residential RIPE Cable/DSL/ISP
Summary
VoIP Unlimited
voip isp business uk
ULGRP-AS is operated by VoIP Unlimited.
What it's used for
- The address space carries VoIP and broadband traffic, evidenced by netnames such as
UK-VOIPUNLIMITEDand reverse DNS entries likeadsl-unlimited.netandas42004.net. - With 11,776 IPv4 addresses announced across 7 prefixes and 74 observed neighbours, the network functions as a mid-sized access provider with significant peering relationships.
- Traffic consists of VoIP signalling and media, along with connectivity services for business clients, reflecting the operator's focus on SIP, UCaaS, and cloud solutions.
Notable
- Registrants are predominantly
VOIP-UN LIMITED, with exceptions forMoose Internet Services LtdandNet Primates Ltdon smaller prefixes. - VoIP Unlimited rebranded in 2017 to shift focus from pure technical capabilities to a broader channel-focused telecoms carrier identity.
- The inventory includes a mix of /20, /22, and /23 blocks, with one prefix registered to a different entity, suggesting historical acquisitions or leased space.
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 |
|---|---|---|
| LINX LON1 | London, United Kingdom | 195.66.224.45 |
| London Network Access Point | London, United Kingdom | 5.57.82.104 |
Transit providers
23 upstream, 0 downstream and 35 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-27, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 7 prefixes · 11.78K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| GB | United Kingdom | 8 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS42004- Registry name
- ULGRP-AS
- Registrant
- VOIP-UN LIMITED
- Abuse contact
- abuse@voip-unlimited.net
- Registered
- 2006-12-01
- Last changed
- 2021-07-22
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- VoIP Unlimited
- Network type
- Cable/DSL/ISP
- Scope
- Europe
- Traffic ratio
- Balanced
- Peering policy
- Open
- IRR as-set
AS-ULGRP- Present at
- 3 exchanges
- Facilities
- 3 facilities
- Website
- http://www.voip-unlimited.net
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
- 0% valid · 0 valid, 9 with no ROA
- ROAs
- 0 authorising AS42004
- ASPA
- no ASPA record
- IRR
- 100% registered · 9 of 9 announcements
- Route objects
- 9 naming AS42004
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: 446 networks and 1,852 prefixes, as published 2026-10-27. 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