Autonomous system
AS54113 FASTLY
Hosting ARIN
Summary
Fastly, Inc.
cdn edge security
Fastly's Autonomous System. Fastly is a modern edge-cloud / CDN known for very fast cache purges and programmable edge logic (VCL, Compute@Edge).
What it's used for
- Caching and accelerating high-traffic sites and APIs, with near-instant content invalidation.
- Edge compute and edge security for developer-heavy customers.
Notable
- Fastly deliberately runs fewer, larger points of presence than some CDNs, favoring powerful POPs at major interconnection hubs.
- Many well-known sites front through Fastly, so an IP here identifies the CDN, not the origin.
- Fastly also runs the egress proxy for Firefox's built-in VPN, from Mozilla-registered space it originates:
45.58.232.0/21(ARINMOZILLA) and2a00:8c40:f000::/36(RIPEMOZILLA-FIREFOX-VPN). Those prefixes are classifiedvpnindividually; the ASN as a whole stayshosting, since tagging it would label every Fastly-fronted site a VPN.
Interesting
- A single misconfiguration at Fastly in June 2021 briefly took a large chunk of the web offline — including major news, government, and retail sites — illustrating how concentrated CDN infrastructure has become.
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 130 exchanges in 33 countries, largest first.
| Exchange | Location | Their address |
|---|---|---|
| IX.br (PTT.br) São Paulo | São Paulo, Brazil | 187.16.220.243 |
| DE-CIX Frankfurt | Frankfurt, Germany | 80.81.195.54 |
| IX.br (PTT.br) Fortaleza | Fortaleza, Brazil | 45.68.74.112 |
| LINX LON1 | London, United Kingdom | 195.66.225.91 |
| AMS-IX Amsterdam | Amsterdam, Netherlands | 80.249.212.183 |
| Neutral Internet Exchange | Amsterdam, Netherlands | 193.239.118.116 |
| NAPAfrica IX Johannesburg | Johannesburg, South Africa | 196.60.8.13 |
| France-IX Paris | Paris, France | 37.49.238.76 |
Transit providers
138 upstream, 1 downstream and 230 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 305 prefixes · 377K addresses IPv6 1,023 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 1,328 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS54113- Registry name
- FASTLY
- Registrant
- Fastly, Inc.
- Abuse contact
- abuse@fastly.com
- Registered
- 2011-10-04
- Last changed
- 2012-03-02
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 99.8% valid · 1,797 valid, 3 with no ROA
- ROAs
- 6,903 authorising AS54113
- ASPA
- no ASPA record
- IRR
- 99.9% registered · 1,799 of 1,800 announcements
- Route objects
- 5,821 naming AS54113
Reputation
Classification and threat
Hosting Datacenter or cloud provider. Addresses are servers, not people.
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