asn.dev

Autonomous system

AS15178 -Reserved AS-

Unclassified ARIN

IPv4 addresses 256 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly Unknown
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

AS15178

Unknown · AI-generated

hosting business

The registry calls this AS number reserved, and it is announcing a route anyway.

What it's used for

  • A single IPv4 /24 announced through one observed BGP neighbour. The block is registered to a cloud communications provider.

Notable

  • The AS handle is the literal string -Reserved AS-, a placeholder rather than a name.
  • The lookup for the holder failed, so nothing can be said about who the number is assigned to.
  • The country of the announced block is unknown in the inventory, so even its geography is unrecorded.
  • The block's netname combines the registrant's name, its corporate form and the third octet of the address, and the registrant is written with a trailing period.
  • One of three sampled addresses answered, and the name is a mail host under the domain of an organisation unrelated to the registrant.

Interesting

  • A reserved handle on an announcing AS number is a contradiction between two systems that never check each other. Routing accepts the number because a neighbour vouches for it; the registry describes it as unallocated because nobody updated the record when it was put to use.
  • The one reverse name gives away more than the whole registry does. It names a tenant, which places the block in a hosted mail environment and tells you what the provider is selling here.
  • Two hundred and fifty-six addresses and one upstream is the smallest possible arrangement, and it is not the sort of network anyone would expect to hold an AS number in the fifteen-thousand range.

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 1 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS25843EvolveIP, LLC58

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-06, 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 1 prefixes · 256 addresses IPv6 0 prefixes

CountryNamePrefixes
Unknown1

Registry

Allocation record

ARIN · via Atlas (registry data)
Registry
ARIN
Allocation
reserved

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 1 with no ROA
ROAs
0 authorising AS15178
ASPA
no ASPA record
IRR
100% registered · 1 of 1 announcements
Route objects
1 naming AS15178

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 1,854 prefixes, as published 2026-11-06. 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