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InternetData
IPv4 address

137.66.17.213

An anycast address, announced by Fly.io, Inc. (AS40509). It's hosting space, a CDN edge of Fly.io, and a web server on port 80.

Summary

Geolocation
Anycast

Announced from many places at once; IP Geolocation names San Francisco, California, United States

Ownership
137.66.16.0/23
ip-137-66-17-213.customer.flyio.net
  • Hosting
  • Anycast
  • CDNFly.io
  • WebPort 80

Geolocation

Where the address is, and what that place uses.

City
San Francisco
Region
California
Postal code
94102
Continent
North America
Timezone
America/Los_Angeles

Ownership

Who holds the address: the AS announcing it, the registry record, the abuse contact and its name in DNS.

Company
Fly.io, Inc.
Domain
fly.io
Type
Hosting
Registered in
United States
AS number
AS40509
Name
Fly.io, Inc.
Prefix
137.66.16.0/23
RPKI
Valid
Type
Hosting
Domain
fly.io
Registered in
United States
Name
Fly.io, Inc.
Network name
FLYIO
Organization
FLYIO
Status
allocation
Registry
ARIN
Domain
fly.io
Name
Abuse
Phone
+1-510-768-8430
Address
2261 Market Street #4990, San Francisco, CA, 94114
Network
137.66.0.0-137.66.63.255
Hostname
ip-137-66-17-213.customer.flyio.net
Not seen inIP RWHOIS

Anonymity

Whether the address hides someone else: a VPN, Tor, a relay, a proxy pool, or a hosting range.

Confidence
Medium
Last seen
2026-10-31

Network

What kind of network it is on: a mobile carrier, a satellite operator, an anycast service, a CDN edge.

Anycast
Announced from many locations
Provider
Fly.io
Confidence
High
Last seen
2026-11-01

Services

What our own internet-wide measurement found listening on it.

80 status
301
80 redirect
https://137.66.17.213/
80 server
Fly/42494bfe9c (2026-10-15)
80 seen
2026-08-13 to 2026-10-22
00 · Evaluate

Test the real build first.

An evaluation license puts a full current build in your hands, with no sampling, so you can measure it against your own traffic before anyone talks about terms.

01 · License

Then license what you use.

Standard, for detection and decisions inside your own product and operations.
Redistribution, when the data ships onward inside what you sell, priced by scope rather than by seat.
Annual terms, a named contact, and monthly, quarterly or yearly payment.