Autonomous system
AS200671 START-AS
Unclassified Spamhaus ASN-DROP RIPE
Summary
Start Building Ltd
business ipv6 uk
START-AS is held by Start Building Ltd.
What it's used for
- The space carries a single IPv6 prefix,
2001:678:11b8::/48, with no announced IPv4 addresses. - One observed neighbour against one announced prefix indicates a minimal, direct connection rather than a transit or large-scale access network.
- As a construction and extension builder, the network supports office operations and business communications for the firm.
Notable
- The registry holder
START-AS START BUILDING LTDaligns with the CAIDA as2org entry forSTART BUILDING LTD. - The address inventory consists solely of one IPv6 /48 block, with no IPv4 inventory present.
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
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 1 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS210316 | CJSC "SCIENTIFIC AND PRODUCTION FIRM "ELEKOMS"" | 34 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-25, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 0 prefixes · 0 addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| GB | United Kingdom | 1 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS200671- Registry name
- START-AS
- Registrant
- START BUILDING LTD
- Abuse contact
- buildind.vasile@keemail.me
- Registered
- 2026-02-24
- Last changed
- 2026-02-24
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 1 with no ROA
- ROAs
- 1 authorising AS200671
- ASPA
- no ASPA record
- IRR
- 100% registered · 1 of 1 announcements
- Route objects
- 1 naming AS200671
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
On Spamhaus ASN-DROP Spamhaus lists this entire
network (associated domain start-building)
as controlled by, or hijacked for, cybercrime. Many operators null-route
everything it originates.
1 DROP match Announced space overlapping the DROP prefix list.
| Announced | DROP entry | Record |
|---|---|---|
| 2001:678:11b8::/48 | 2001:678:11b8::/48 | SBL699751 |
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 443 networks and 1,779 prefixes, as published 2026-10-24. 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