Autonomous system
AS8903 AS8903 Lyntia Networks. Peering AS.
Unclassified RIPE
Summary
Lyntia Networks
transit isp legacy
AS8903 is the peering and transit AS of Lyntia Networks S.A., Spain's largest neutral wholesale fibre operator, run from Alcobendas (Madrid) with a nationwide network of tens of thousands of route-kilometres built largely along electricity and gas rights-of-way.
What it's used for
- Wholesale carriage: dark and lit fibre, transit and capacity sold to other operators, ISPs and large enterprises rather than to end users.
- Around 173k IPv4 addresses over 110 prefixes plus IPv6, with roughly 105 observed BGP neighbours. The neighbour count is the real size signal — it is the shape of a carrier, not of an eyeball network.
Notable
- The AS carries a visible BT España inheritance. Sampled rDNS on its anchor block
212.49.128.0/18returnspopmbta1-feth0-0-0.net.bt.es, and the AS is still listed in theAS-BT-ES("BT Global Spain customers") route set. The AS number was allocated in 1998, and the space and naming came across with the business. - Ownership has changed hands repeatedly among infrastructure funds — Antin, then a consortium of AXA IM Alts and Swiss Life in 2023, with Morrison & Co taking a third in 2024. The network kept running throughout; only the cap table moved.
Interesting
- Because Lyntia sells wholesale, an address here often fronts someone else's service. Do not read a Lyntia IP as a Lyntia end user.
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 |
|---|---|---|
| DE-CIX Madrid | Madrid, Spain | 185.1.192.150 |
| ESpanix Madrid Lower LAN | Madrid, Spain | 193.149.1.18 |
Transit providers
11 upstream, 67 downstream and 96 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 2026-10-10, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 180 prefixes · 164K addresses IPv6 39 prefixes
| Country | Name | Prefixes |
|---|---|---|
| ES | Spain | 219 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS8903- Registry name
- AS8903
- Registrant
- LYNTIA-MNT
- Abuse contact
- abuse@lyntia.com
- Registered
- 2002-09-05
- Last changed
- 2026-06-26
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 92% valid · 109 valid, 9 with no ROA
- ROAs
- 113 authorising AS8903
- ASPA
- no ASPA record
- IRR
- 93% registered · 110 of 118 announcements 4 other origin
- Route objects
- 171 naming AS8903
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: 431 networks and 1,775 prefixes, as published 2026-10-11. 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