Autonomous system
AS3549 LVLT-3549
Transit ARIN NSP
Summary
Lumen (Global Crossing / Level 3 legacy)
transit backbone legacy
A major global backbone (LVLT-3549) now operated by Lumen — the former Global Crossing network, which Level 3 acquired before merging into Lumen.
What it's used for
- Global IP transit and wholesale backbone connectivity, especially on long-haul and submarine routes Global Crossing originally built.
Notable
- Sits alongside AS3356 (the Level 3 core) inside Lumen; 3549 is the absorbed Global Crossing footprint, still announced under its own ASN.
- A Tier 1-class backbone reaching the whole internet via peering.
Interesting
- Global Crossing famously laid a global submarine-cable network in the late 1990s; that fibre lives on inside Lumen today.
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 2 countries, largest first.
| Exchange | Location | Their address |
|---|---|---|
| IX.br (PTT.br) Londrina | Londrina, Brazil | 200.219.144.63 |
| Network Service Provider IXP (Distributed IX in Edo) | Tokyo, Japan | 202.249.2.91 |
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 3,408 prefixes · 4.52M addresses IPv6 212 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 3,620 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS3549- Registry name
- LVLT-3549
- Registrant
- Level 3 Parent, LLC
- Abuse contact
- abuse@level3.com
- Registered
- 2000-03-21
- Last changed
- 2018-02-20
- Allocation
- assigned
Declared
PeeringDB profile
- Name
- Lumen AS 3549
- Also known as
- gblx.net
- Network type
- NSP
- Scope
- South America
- Traffic ratio
- Balanced
- Peering policy
- Restrictive
- Website
- http://www.lumen.com/
PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.
Routing security
RPKI and IRR
- RPKI
- 0.6% valid · 5 valid, 812 with no ROA 4 RPKI-invalid
- ROAs
- 44 authorising AS3549
- ASPA
- no ASPA record
- IRR
- 0.6% registered · 5 of 821 announcements 74 other origin
- Route objects
- 35 naming AS3549
Reputation
Classification and threat
Transit Tier-1 or major backbone carrying other networks’ traffic.
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 1,768 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
1 IC3 indicators addresses in this network appear in FBI IC3 cybersecurity advisories.
| Prefix | Advisory | Published |
|---|---|---|
208.51.62.181 | China-Linked Hacking Group QTFY Targets Military and Critical Infrastructure with Malicious Distributed Systems | 2026-08-26 |
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere