Autonomous system
AS13819 FWIN-NET
Unclassified ARIN
Summary
INDIGITAL Telecom
isp telecom business
Eleven addresses answer with the same placeholder, and it ends in the name reserved for the loopback.
What it's used for
- A regional telephone and broadband provider. 13,312 addresses across 14 IPv4 prefixes, the IPv6 block
2001:4928::/32, and three observed BGP neighbours.
Notable
- Eleven of eighteen sampled addresses answered, every one of them
undefined.hostname.localhost. - Those answers span four separate blocks in two different parent ranges.
- The AS handle is
FWIN-NET, four letters that match nothing in the registrant. - Nine blocks are netname
INDIGITAL-NETand two more areIND-NB-2. - One of the twelve sampled blocks failed to return a registry record.
Interesting
- The last label of that name is reserved for the loopback address, so a public address claiming it is publishing a name that every resolver is entitled to treat as local. Any software that trusts a reverse lookup gets an answer pointing at the machine asking the question.
- A placeholder repeated across four blocks means the zone was generated once with a default that was never replaced. It is the same story as an empty zone, except that this one answers, so tools that check whether a name exists find one.
- A provider with a /32 of IPv6 and fourteen IPv4 pieces has done the modern work and left the reverse records where they started.
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.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-28, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 14 prefixes · 13.31K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 15 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS13819- Registry name
- FWIN-NET
- Registrant
- INDIGITAL TELECOM
- Abuse contact
- abuse@indigital.net
- Registered
- 1999-09-14
- Last changed
- 2012-02-24
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 100% valid · 9 valid, 0 with no ROA
- ROAs
- 3 authorising AS13819
- ASPA
- 2 declared providers
- IRR
- 100% registered · 9 of 9 announcements
- Route objects
- 5 naming AS13819
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: 448 networks and 1,851 prefixes, as published 2026-10-29. 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