Autonomous system
AS56550 STELCORE Stel Srl - Core Network
Residential RIPE
Summary
STEL S.R.L.
isp cable dsl residential
STELCORE is the autonomous system for STEL S.R.L., an Italian telecommunications provider.
What it's used for
- The address space carries residential and business internet access, evidenced by reverse DNS entries like
host-42-0.stel.itand netnames such asIT-STEL-20110311. - The AS announces 12,800 IPv4 addresses across 18 prefixes and maintains 26 observed neighbours, a ratio consistent with an access network providing connectivity to end-users rather than a transit provider.
- Traffic from this AS consists of subscriber eyeballs, including cable and DSL users, based on the operator's classification as a Cable/DSL/ISP.
Notable
- All registrants for the largest prefixes are listed as
STEL S.R.L., which aligns with the AS holderSTELCORE STEL S.R.L.. - The address inventory is composed of 18 IPv4 prefixes ranging from /21 to /24, with no IPv6 prefixes in inventory.
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
Recorded at 2 exchanges in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Milan Internet Exchange | Milan, Italy | 217.29.66.130 |
| Roma Internet Exchange Point | Rome, Italy | 193.201.28.67 |
Transit providers
7 upstream, 1 downstream and 8 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-11, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 18 prefixes · 12.80K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| IT | Italy | 18 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS56550- Registry name
- STELCORE
- Registrant
- STEL S.R.L.
- Abuse contact
- abuse@stel.it
- Registered
- 2011-03-16
- Last changed
- 2018-09-04
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 18 valid, 0 with no ROA
- ROAs
- 27 authorising AS56550
- ASPA
- no ASPA record
- IRR
- 100% registered · 18 of 18 announcements
- Route objects
- 28 naming AS56550
Reputation
Classification and threat
Residential Fixed-line consumer ISP. Addresses here are homes.
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: 432 networks and 1,768 prefixes, as published 2026-10-12. 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