CDN

Fastly IP ranges

Fastly publishes the IP ranges of its CDN edge servers. Origins behind Fastly can restrict access to these addresses.

IPv4 prefixes: 19
IPv6 prefixes: 2
IPv4 addresses: 304,128
Updated: 2026-10-01

Is this IP Fastly?

Checks the address against the current official list, in your browser.

Download the list

Generated from the current official list.

Source: https://api.fastly.com/public-ip-list · official documentation

All prefixes

Snapshot of 2026-10-01; refreshed from the source when the page loads.

Prefix	Region	Service
23.235.32.0/20
43.249.72.0/22
103.244.50.0/24
103.245.222.0/23
103.245.224.0/24
104.156.80.0/20
140.248.64.0/18
140.248.128.0/17
146.75.0.0/17
151.101.0.0/16
157.52.64.0/18
167.82.0.0/17
167.82.128.0/20
167.82.160.0/20
167.82.224.0/20
172.111.64.0/18
185.31.16.0/22
199.27.72.0/21
199.232.0.0/16
2a04:4e40::/32
2a04:4e42::/32

Frequently asked questions

What are the IP ranges of Fastly?

Fastly publishes 19 IPv4 and 2 IPv6 prefixes (304,128 IPv4 addresses in total) in its official list at https://api.fastly.com/public-ip-list. This page shows the current list and refreshes it from the source every 6 hours.

How often do the Fastly IP ranges change?

Providers add and remove ranges regularly, sometimes several times a week. Do not hard-code the list: load it from the official source (or this page's JSON) on a schedule, for example daily.

How do I allow only Fastly in nginx?

Download the nginx format on this page and include it in a location block: one 'allow' line per prefix followed by 'deny all;'. Regenerate the file regularly, because the list changes.

IP geolocation API

Know who is behind any IP

Beyond published lists, the ipbase API tells you the owner, ASN, location and data-center/VPN status of every IP address, so you can recognise cloud traffic and bots from any provider.

Get a free API key Read the docs

150 free requests every month. No credit card required.

GET https://api.ipbase.com/v2/info?ip=1.1.1.1

{
  "data": {
    "ip": "1.1.1.1",
    "type": "v4",
    "connection": {
      "asn": 13335,
      "organization": "APNIC and Cloudflare DNS Resolver project",
      "isp": "Cloudflare, Inc",
      "range": "1.1.1.0/24"
    },
    "location": {
      "country": { "alpha2": "AU", "name": "Australia" },
      "zip": "4000"
    },
    "security": { "is_vpn": false, "is_tor": false, "threat_score": 0 }
  }
}