Autonomous system
AS15663 UMBRIA_NET
Unclassified ARIN
Summary
Umbrianet
isp business telecom
An underscore in the AS handle, and two netname dates written in two different year formats.
What it's used for
- A regional provider. Two IPv4 prefixes announced from Italy, no IPv6, nine thousand addresses, across two observed BGP neighbours.
Notable
- The AS handle joins two words with an underscore, a character that almost never appears in this field and is not permitted in hostnames.
- The two netnames share a country code and a four-letter brand that is not the company's, but one ends in a six-digit date with a two-digit year and the other in an eight-digit date with a full one.
- The two dates are nineteen years apart, which is how long that brand has survived in the records.
- Both blocks list the company and an abuse role, with nothing unusual in the contacts.
- Six addresses were queried for reverse DNS and none returned a name.
- No IPv6 is announced.
Interesting
- The year format changing between two blocks of the same holder is a dating method. Anything with the short year was filed before the changeover, whatever the record itself claims.
- An underscore in a handle is harmless where handles are just strings and awkward everywhere they get reused as names. This one has survived twenty-five years of being copied around.
- Two routes, two upstreams and nine thousand addresses is a provider that has stayed the size it started at, adding one block in two decades.
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 2026-10-13, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 2 prefixes · 9.22K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| IT | Italy | 2 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS15663- Registry name
- UMBRIA_NET
- Registrant
- CLINE-MNT
- Abuse contact
- staff@cline.it
- Registered
- 2002-06-11
- Last changed
- 2024-09-25
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 5 valid, 0 with no ROA
- ROAs
- 6 authorising AS15663
- ASPA
- no ASPA record
- IRR
- 100% registered · 5 of 5 announcements
- Route objects
- 22 naming AS15663
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 1,773 prefixes, as published 2026-10-13. 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