AS54113

AS54113 is the autonomous system of Fastly, Inc., a US edge-cloud and content-delivery provider registered under ARIN since October 2011. Fastly runs an anycast CDN built around programmable edge compute (Compute@Edge / VCL), and its routing profile reflects that design: it announces far more IPv6 than IPv4 prefixes and deliberately does not present a consistent global table across every exchange, instead steering traffic to the nearest point of presence. Like all CDNs, an address here represents content served through Fastly's edge rather than a specific customer or end user, so the geolocation of a Fastly IP points to a POP, not a person. Fastly's route hygiene is strong — in the observed view every originated prefix was RPKI-valid with no invalids. The network is best known to the public for the June 8, 2021 global outage, which Fastly attributed to a latent software bug triggered by a valid customer configuration change, not to any attack; the company reported that most of the network recovered within roughly an hour. No notable public abuse signal is attributable to the network as of June 2026.

Operator

Fastly, Inc. [Confirmed] — ARIN RDAP/WHOIS

Country / RIR

US, ARIN [Confirmed] — ARIN RDAP

Allocated

2011-10-04 (ARIN RegDate) [Confirmed] — ARIN RDAP

Org status

active; public company (NYSE: FSLY) — fastly.com

Security/abuse context

anycast shared CDN edge — an IP indicates traffic served via Fastly, not a tenant identity. Source of the 2021-06-08 global CDN outage (a config-triggered software bug, NOT abuse; ~most of network recovered within ~1 hour). No notable public abuse signal as of 2026-06-04 — fastly.com/blog

Network & routing

Network type

CDN / content [Confirmed] — PeeringDB (type "Content") + operator

Size

~482–542 IPv4 prefixes originated (~350K addrs), ~1,113–1,198 IPv6 (IPv6-heavy); ~154 IXPs; ~689–749 peers; AS rank ~#1,756 (IPinfo) — bgp.he.net / bgpview (2026-05/06)

Routing/peering

open/selective, anycast, "heavy outbound"; no backbone; does not announce a consistent table across IXes; RPKI essentially all valid (~1,736 valid / 0 invalid) — fastly.com peering page, bgp.he.net

Notable usage

global anycast CDN + programmable edge compute (Compute@Edge / VCL) — fastly.com

Related ASNs

AS-FASTLY as-set includes AS895

Analyst note

Shared edge-cloud infrastructure; IPv6-heavy and anycast, so a Fastly IP's geolocation reflects the nearest POP, not the end user.