asn.dev

Autonomous system

AS204562 ASJavelin JAVELIN BROADBAND LIMITED

Unclassified RIPE

IPv4 addresses 1.02K 2 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly GB
Exchanges 0 recorded by PCH
Upstreams 2 1 downstream
Flagged prefixes 0 none

Summary

Javelin Broadband

United Kingdom · AI-generated

business government connectivity uk

ASJAVELIN is operated by Javelin Broadband Limited.

What it's used for

  • The address space carries connectivity for secure and critical environments, as indicated by the registrant JAVELIN BROADBAND LIMITED and reverse DNS entries pointing to javelinbroadband.net.
  • The network announces 1024 IPv4 addresses across 2 prefixes and 1 IPv6 prefix, with 3 observed routing neighbours, indicating a focused access or business connectivity role rather than large-scale transit.
  • Traffic from this AS consists of high-uptime, SLA-backed internet services for military bases, defense contractors, and secure government installations, including fixed leased lines and point-to-point connectivity.

Notable

  • Registrants for both announced IPv4 prefixes are JAVELIN BROADBAND LIMITED, matching the AS holder.
  • The address inventory is compact, consisting of two contiguous /23 blocks and a single /29 IPv6 prefix, consistent with a specialized provider serving specific high-security sites.

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

2 upstream, 1 downstream and 5 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS174Cogent Communications, LLC138
AS61231Neos Networks Limited124

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-10, 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 2 prefixes · 1.02K addresses IPv6 1 prefixes

CountryNamePrefixes
GBUnited Kingdom3

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS204562
Registry name
ASJavelin
Registrant
JAVELIN BROADBAND LIMITED
Abuse contact
abuse@javelinbroadband.net
Registered
2018-02-16
Last changed
2025-11-19
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 5 valid, 0 with no ROA
ROAs
2 authorising AS204562
ASPA
no ASPA record
IRR
100% registered · 5 of 5 announcements
Route objects
2 naming AS204562

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: 454 networks and 1,847 prefixes, as published 2026-11-11. 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