asn.dev

Autonomous system

AS8586 OBSL-AS TalkTalk - Business division

Unclassified RIPE

IPv4 addresses 108K 15 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly GB
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

TalkTalk Business (Opal)

United Kingdom · AI-generated

enterprise isp legacy

OBSL-AS is the TalkTalk Business network, held by TalkTalk Communications Limited. OBSL stands for Opal Business Solutions, the B2B arm TalkTalk acquired with Opal Telecom, and the name still runs through the reverse DNS.

What it's used for

  • Business connectivity in the UK: DSL, leased lines and routed customer subnets. Sampled reverse DNS lands on dsl.opal-solutions.com and routed.opal-solutions.com hostnames, with backbone hops under opalback.opal-solutions.com.
  • Static assignments for business customers, some of which carry the customer's own naming (a sampled address resolves to fw.bristan.com, a UK bathroom-fittings manufacturer's firewall) or a reseller's (swiftinter.net static ranges).
  • Around 108,000 IPv4 addresses across 16 prefixes.

Notable

  • This is not TalkTalk's consumer broadband network. The residential eyeball space sits on other TalkTalk autonomous systems; the dsl label here is the access technology sold to businesses, not a home-subscriber pool.
  • One observed neighbour: the AS sits behind TalkTalk's own backbone rather than buying transit independently.

Interesting

  • Opal Telecom was TalkTalk's wholesale/business carrier before the brands merged, and its rDNS zone has outlived the company name by well over a decade.

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

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

1 upstream, 0 downstream and 2 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS13285TalkTalk Communications Limited997

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-16, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 15 prefixes · 108K addresses IPv6 1 prefixes

CountryNamePrefixes
GBUnited Kingdom16

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS8586
Registry name
OBSL-AS
Registrant
OBSL-MNT
Abuse contact
abuse-reports@pxc.co.uk
Registered
2002-09-10
Last changed
2025-10-15
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 17 valid, 0 with no ROA
ROAs
17 authorising AS8586
ASPA
no ASPA record
IRR
100% registered · 17 of 17 announcements
Route objects
19 naming AS8586

Reputation

Classification and threat

Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.

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 1,783 prefixes, as published 2026-10-17. 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

Cross-check