Autonomous system
AS6401 ZAYO-CAN-6401
Unclassified ARIN
Summary
Zayo Canada
transit legacy
ZAYO-CAN-6401 is a Canadian autonomous system of Zayo Group, the Denver-headquartered fibre and bandwidth infrastructure carrier. Zayo grew largely by acquisition, and this AS is part of the Canadian assets it absorbed along the way.
What it's used for
- Carrier and enterprise connectivity in Canada: IP transit, wavelengths and dedicated circuits over Zayo's fibre.
- Announces only a handful of scattered
/24s — a small remnant footprint rather than a primary routing identity.
Notable
Zayo is an infrastructure and transit carrier, not a consumer ISP: the address space fronts network gear and business customer circuits, not subscriber pools. Zayo operates several autonomous systems, so an announcement in AS6401 says "a Zayo Canada network element or customer route", not "the Zayo backbone" — the bulk of Zayo's routing lives in its larger, better-known AS numbers.
The tiny announcement count is typical of an AS inherited through acquisition and kept alive for legacy customer routes while new traffic is folded into the acquirer's main network.
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.
Transit providers
1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS15290 | Zayo Bandwidth | 295 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-19, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 5 prefixes · 1.28K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 5 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS6401- Registry name
- ZAYO-CAN-6401
- Registrant
- Zayo Bandwidth
- Abuse contact
- abuse@zayo.com
- Registered
- 2001-10-10
- Last changed
- 2025-06-20
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 100% valid · 5 valid, 0 with no ROA
- ROAs
- 5 authorising AS6401
- ASPA
- no ASPA record
- IRR
- 20% registered · 1 of 5 announcements
- Route objects
- 1 naming AS6401
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 1,778 prefixes, as published 2026-10-20. 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