Autonomous system
AS21396 NETCONNEX NetConnex Broadband Ltd.
Hosting RIPE
Summary
NetConnex
residential broadband uk
NETCONNEX is operated by NetConnex Broadband Ltd.
What it's used for
- The address space carries residential broadband traffic, evidenced by reverse DNS entries such as
ip100-0.thdo.ncuk.netand netnames likeUK-NETCONNEX-20011121. - The AS announces 11008 IPv4 addresses across 8 prefixes and 3 IPv6 prefixes, while maintaining 36 observed neighbours; this ratio of significant address inventory to a moderate peer set indicates an access network providing connectivity to end-users.
Notable
- Registrants for the majority of prefixes align with the announcer, including
NetConnex Broadband Ltd.andNetConnex Hostmaster, though some blocks are registered to third parties such asThisIsUniverse ApSandLovefilm International Ltd. - The address inventory is composed of a mix of /20, /22, /23, and /24 blocks, with the largest allocations being
80.249.96.0/20and141.0.208.0/20.
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 | 195.66.224.240 |
| London Network Access Point | London, United Kingdom | 5.57.80.142 |
Transit providers
16 upstream, 1 downstream and 25 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 2026-10-20, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 8 prefixes · 11.01K addresses IPv6 3 prefixes
| Country | Name | Prefixes |
|---|---|---|
| GB | United Kingdom | 11 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS21396- Registry name
- NETCONNEX
- Registrant
- NETCONNEX-MNT
- Abuse contact
- abuse@ncuk.net
- Registered
- 2002-09-17
- Last changed
- 2026-09-09
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 85% valid · 11 valid, 2 with no ROA
- ROAs
- 20 authorising AS21396
- ASPA
- no ASPA record
- IRR
- 100% registered · 13 of 13 announcements
- Route objects
- 100 naming AS21396
Reputation
Classification and threat
Hosting Datacenter or cloud provider. Addresses are servers, not people.
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: 442 networks and 1,778 prefixes, as published 2026-10-20. 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