Autonomous system
AS7311 FRONTIER
Unclassified ARIN
Summary
Frontier Networks Inc (Canada)
isp eyeball residential cable legacy
FRONTIER is Frontier Networks Inc., a Toronto-based Canadian broadband aggregator and reseller. It is not Frontier Communications, the large US telco — different company, different country.
What it's used for
- Reselling last-mile broadband across Canada: it interconnects with the incumbent cable and telephone carriers and with regional WISPs, then delivers service under its own addressing.
- Announces about 126,000 IPv4 addresses across roughly 100 prefixes, anchored by
45.2.0.0/16, plus IPv62605:8100::/32. - Also sells VoIP, colocation at 151 Front Street in Toronto, and wholesale carrier services.
Notable
- Reverse DNS is the giveaway: subscriber addresses resolve to names like
cbl-45-2-24-5.yyz.frontiernetworks.ca—cblfor cable, with airport codes (yyzToronto,yvrVancouver) marking the market. That is an eyeball network with real end-user pools, not a pure transit or hosting AS. - The customer mix spans both homes and businesses, since a broadband aggregator sells whatever last mile it can reach — including rural and underserved areas the incumbents neglect.
Interesting
- The name collision with US Frontier Communications (AS5650) is one of the more reliable traps in ASN lookups: identical brand, unrelated networks.
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 5 exchanges in 2 countries, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Seattle Internet Exchange | Seattle, United States | 206.81.80.206 |
| Toronto Internet Exchange | Toronto, Canada | 2001:504:1a::34:167 |
| New York International Internet Exchange | New York, United States | 198.32.160.133 |
| Equinix Internet Exchange New York | New York, United States | 198.32.118.179 |
| Vancouver Internet Exchange | Vancouver, Canada | 206.41.104.81 |
Transit providers
16 upstream, 26 downstream and 55 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 63 prefixes · 126K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| CA | Canada | 64 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS7311- Registry name
- FRONTIER
- Registrant
- Frontier Networks Inc
- Abuse contact
- abuse@frontiernetworks.ca
- Registered
- 2009-10-16
- Last changed
- 2012-02-24
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 94% valid · 94 valid, 6 with no ROA
- ROAs
- 31 authorising AS7311
- ASPA
- no ASPA record
- IRR
- 98% registered · 98 of 100 announcements
- Route objects
- 99 naming AS7311
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