Autonomous system
AS20712 AS20712 Andrews & Arnold Ltd
Residential RIPE Cable/DSL/ISP
Summary
Andrews & Arnold
isp residential uk broadband
AS20712 is operated by Andrews & Arnold Ltd, a UK-based internet service provider.
What it's used for
- The address space carries residential broadband traffic, evidenced by registrant netnames like
UK-AA-20020403andUK-AA-20030203associated withAAISP Support. - The AS announces 144,640 IPv4 addresses across 103 prefixes and 44 IPv6 prefixes, while maintaining 106 observed neighbours; this high address-to-neighbour ratio indicates an access network serving end-users rather than a transit provider.
Notable
- All sampled registrants are
Andrews & Arnold Ltd, consistent with the AS holder, confirming the space is owned and operated by the same entity. - The inventory consists of large blocks in the 81.2.0.0/16, 81.187.0.0/16, 90.155.0.0/16, and 217.169.0.0/16 ranges, reflecting a substantial domestic footprint.
- Reverse DNS entries include generic reverse-dns.uk pointers and specific hostnames like
bcast.zanker.uk, typical of a large-scale residential ISP managing customer-facing addresses.
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 | 195.66.224.60 |
| London Network Access Point | London, United Kingdom | 5.57.80.69 |
Transit providers
23 upstream, 21 downstream and 63 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 2026-10-11, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 107 prefixes · 149K addresses IPv6 44 prefixes
| Country | Name | Prefixes |
|---|---|---|
| GB | United Kingdom | 151 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS20712- Registry name
- AS20712
- Registrant
- AA
- Abuse contact
- abuseripe@aa.net.uk
- Registered
- 2002-08-12
- Last changed
- 2026-10-05
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- Andrews & Arnold Ltd
- Also known as
- AAISP, A&A
- Network type
- Cable/DSL/ISP
- Scope
- Global
- Traffic ratio
- Mostly Inbound
- Peering policy
- Open
- IRR as-set
AS-AA- Present at
- 3 exchanges
- Facilities
- 3 facilities
- Website
- https://www.aa.net.uk
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
- 85% valid · 93 valid, 16 with no ROA
- ROAs
- 82 authorising AS20712
- ASPA
- no ASPA record
- IRR
- 100% registered · 109 of 109 announcements
- Route objects
- 138 naming AS20712
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: 431 networks and 1,768 prefixes, as published 2026-10-12. 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