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ASN lookup result for AS54113 Fastly, Inc. — network size, BGP routing and registration

USAS54113Fastly, Inc.CDN
WHOIS Topology

United States · ARINfastly.com

Hosts top sitesAnycastCDNDDoS mitigationVPN services

IPv4 addresses

380,928

603 announced prefixes

IPv6 addresses

1.23 × 10²⁹

1,202 announced prefixes

BGP neighbours

…

CAIDA rank

#7,978

Customer cone 2 ASNs

Estimated users

282K

APNIC Labs estimate

RPKI

100% valid

0 invalid · 3 not covered

Average purity

72

623 sampled IPs

IXPs / facilities

151 / 110

Operator self-reported

History

How prefixes were announced and changed hands, registration changes, and outage or hijack incidents.

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IP ranges

Currently announced prefixes with their RIR registration and geolocation.

PrefixRPKIRegistrationGeolocationAddresses
151.101.0.0/16Valid—USUnited States65,536
199.232.0.0/16Valid—USNew York65,536
146.75.0.0/17ValidSEFASTLYRIPEBGSofiaCross-border32,768
146.75.128.0/17ValidSEFASTLYRIPEUSIndianapolisCross-border32,768
167.82.0.0/17Valid—USUnited States32,768
90.98.0.0/18Not foundUSUS-FASTLY-20060302RIPEUSUnited States16,384
140.248.0.0/18Valid—USAshburn16,384
140.248.128.0/18Valid—SGSingapore16,384
140.248.192.0/18Valid—USUnited States16,384
172.111.64.0/18Valid—USUnited States16,384
87.81.224.0/19ValidUSNET-87-81-224-0-19RIPEUSUnited States8,192
140.248.192.0/19Valid—USUnited States8,192
140.248.224.0/19Valid—USUnited States8,192
172.111.64.0/19Valid—USUnited States8,192
172.111.96.0/20Valid—USUnited States4,096
45.58.232.0/21Valid—FIHelsinki2,048
140.248.56.0/21Valid—AEUnited Arab Emirates2,048
45.58.212.0/22Valid—ATVienna1,024
45.58.240.0/22Valid—SGSingapore1,024
140.248.0.0/22Valid—USAshburn1,024

Only the first 500 prefixes are listed; address counts and geography use all prefixes.

/24 block profile

One square per /24: colour shows the risk type, shade how many addresses are flagged, stripes mark datacenter blocks. Click a square to see all 256 addresses.

/24s with data 207 / 1,488 （14%） · flagged 174

No risk flagsDatacenter (no flags)ProxyVPNAbuse / blocklistTorDarker = more flagged addresses; dashed = block screen only

146.75.128.0/1772/128 with data · 70 flagged

140.248.0.0/1837/64 with data · 34 flagged

151.101.0.0/1620/256 with data · 11 flagged

87.81.224.0/1912/32 with data · 0 flagged

199.232.0.0/164/256 with data · 1 flagged

185.199.108.0/224/4 with data · 2 flagged

149.143.184.0/223/4 with data · 3 flagged

45.58.232.0/212/8 with data · 2 flagged

45.58.240.0/222/4 with data · 2 flagged

140.248.128.0/181/64 with data · 1 flagged

45.58.212.0/221/4 with data · 1 flagged

198.145.136.0/221/4 with data · 1 flagged

Hover a square for its numbers; click to see all 256 addresses.

Each prefix shows its 64 /24s with the most data. Built daily from lookups, neighbour sampling, public lists and block screening.

IP reputation

IPs from this network that CleanIP has analysed: purity, abuse reports and the riskiest /24 blocks.

Purity distribution

85–100 070–84 49950–69 970–49 27

0.04%

Share of IPv4 reported or blocklisted

146

Listed IPs

623

Analysed IPs

Flagged = VPN, proxy, Tor or purity below 50. Samples come from user lookups and neighbour sampling, not every address in this network.

Geography

Where this network’s IPv4 addresses are located.

  • US United States
  • GB United Kingdom
  • AU Australia
  • CA Canada
  • IN India
  • BR Brazil
Scope
Global
In registered country
61.4%

Estimated by sampling IPv4 ranges against a geolocation database.

Datacenter Presence

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BGP upstreams and neighbours

AS54113Standalone page
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WHOIS record

The registry’s record for this AS number: holder, status, dates and contacts.

Sources

Where the information on this page comes from and when it was updated.

InformationSourceUpdated
Registered countryRIR daily delegation statistics2026-10-22
Registered address & allocation dateRIR registration data (RDAP)2026-10-03
Organization & company countryAS-to-organization data2026-10-21
Network typeCleanIP ASN canon2026-10-22
Exchanges & facilitiesOperator self-reported interconnection data2026-10-21
Announced prefixes & BGP neighboursPublic BGP routing data2026-10-22
IPv4 geographyGeolocation database—
RPKI validationRPKI ROA validation data2026-10-22
Rank & customer coneCAIDA AS Rank2026-10-01
Estimated users (APNIC)APNIC Labs user estimates2026-10-19
Network tagsPublic routing data community tags2026-10-22
IP reputationCleanIP lookups and neighbour sampling—

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Multi-source cross-checks · In-house reputation data · Real data only

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