Privacy relay · file snapshot 2026-09-21

iCloud Private Relay IP ranges

The iCloud Private Relay file fetched on 2026-09-21 contained 41,814 distinct IPv4 prefix strings and 243,357 IPv6 prefix strings. Inspect the source URL, recorded fields and content hash below.

IPv4
41,814
IPv6
243,357
Fetched
2026-09-21
Publisher
iCloud Private Relay
Category
Privacy relay
IPv4 prefix strings
41,814
IPv6 prefix strings
243,357
Source file
https://mask-api.icloud.com/egress-ip-ranges.csv
File format
TEXT
Size
12,050,014 bytes
Fetched (UTC)
SHA-256
88d74dbf1844603d04c7dc4d4d8acadd00e783fcd8fc99f8ade0aa677fd25ff7
Documentation
developer.apple.com/support/prepare-your-network-for-icloud-private-relay/

File measurement

Distinct valid prefix strings in the downloaded file. Overlapping prefixes are kept, so the count describes entries, not address-space size.
41,814
IPv4 prefix strings
243,357
IPv6 prefix strings
12,050,014
bytes
TEXT
file format
Prefix count split: IPv4 14.7% / IPv6 85.3%. This compares entries, not address-space size.

Fields recorded from the file

Literal field names and values. A timestamp or counter is shown without assigning an update schedule to it.

The parser recorded no publisher version or timestamp field for this file.

No selected facet values were collected by this measurement.

Reproduce the count

Save the linked source as provider-file, download the Python measurement script, then run it. The result includes counts, fields and a hash; a different hash means you measured different bytes. Full counting method.
Measure a saved file
python3 ip-ranges-measure.py provider-file

ASN reference records

Holder names were read from RIPEstat on the dates below. These are separately selected reference records, not a mapping of every prefix to its origin ASN. A listed holder may differ from the provider named on this page.
iCloud Private Relay ASN records
ASNRIPEstat holderChecked
AS36183AKAMAI-AS - Akamai Technologies, Inc.2026-09-21
AS20940AKAMAI-ASN1 Akamai International B.V.2026-09-21
AS13335CLOUDFLARENET - Cloudflare, Inc.2026-09-21
AS54113FASTLY - Fastly, Inc.2026-09-21

Interpreting this snapshot

Where is the iCloud Private Relay IP range file?
The selected snapshot was downloaded from https://mask-api.icloud.com/egress-ip-ranges.csv. The source and documentation links on this page let you inspect the publisher's current data and scope.
What does a matching prefix establish?
A match means an address falls inside a prefix in this selected file. The measurement does not establish the identity of a requester, a device location or ownership of every address. Check the publisher’s documentation before applying access rules.
How often is this file updated?
This record measures the file fetched at 2026-09-21T19:35:38.821719+00:00. Publisher fields are reproduced as recorded, without inferring a future update schedule. Download the current source and compare hashes to check for a change.

To test an address against a saved file, follow the Python cloud CIDR matching guide. Its example parses AWS JSON; adapt the parser to this publisher's schema and preserve all matching records.

Sources

A range file lists addresses the publisher attributes to its service. Matching an address against it shows only that the address falls inside a listed prefix; it does not identify the requester or the location of a device.