FCM-IP

A Google FCM service IP optimization tool that finds the best performing IPs and assigns them to FCM domains.

Description

This tool optimizes Google Firebase Cloud Messaging (FCM) connectivity by testing and selecting the fastest IP addresses for FCM domains. It generates configuration files compatible with AdGuardHome or /etc/hosts for improved messaging performance.

Features

• FCM domain optimization
• AdGuardHome configuration output
• /etc/hosts file generation

Installation & Usage

Options

Option	Description
-4	IPv4 only mode
-host	Output in hosts file format instead of AdGuardHome format
-h	Show help message

Quick Run

# Default run (AdGuard format)
curl -fsSL https://raw.githubusercontent.com/vrichv/fcm-ip/main/mtalk.sh | bash

# IPv4 only mode
curl -fsSL https://raw.githubusercontent.com/vrichv/fcm-ip/main/mtalk.sh | bash -s -- -4

Usage Examples

> ./mtalk.sh
Testing IPv4 addresses...
Testing IPv6 addresses...
=== For AdGuardHome ===
||mtalk.google.com^$dnsrewrite=2404:6800:4003:c1a::bc
||mtalk4.google.com^$dnsrewrite=74.125.200.188
||alt1-mtalk.google.com^$dnsrewrite=2404:6800:4008:c15::bc
||alt2-mtalk.google.com^$dnsrewrite=142.250.0.188
||alt3-mtalk.google.com^$dnsrewrite=2607:f8b0:400e:c0c::bc
||alt4-mtalk.google.com^$dnsrewrite=74.125.71.188
||alt5-mtalk.google.com^$dnsrewrite=2a00:1450:400c:c0a::bc
||alt6-mtalk.google.com^$dnsrewrite=74.125.200.188
||alt7-mtalk.google.com^$dnsrewrite=2404:6800:4003:c04::bc
||alt8-mtalk.google.com^$dnsrewrite=74.125.71.188


=== Final Ping Results (sorted by domain priority) ===
mtalk.google.com          2404:6800:4003:c1a::bc                   (avg: 55.186ms)
mtalk4.google.com         74.125.200.188                           (avg: 209.520ms)
alt1-mtalk.google.com     2404:6800:4008:c15::bc                   (avg: 81.463ms)
alt2-mtalk.google.com     142.250.0.188                            (avg: 318.822ms)
alt3-mtalk.google.com     2607:f8b0:400e:c0c::bc                   (avg: 191.544ms)
alt4-mtalk.google.com     74.125.71.188                            (avg: 244.042ms)
alt5-mtalk.google.com     2a00:1450:400c:c0a::bc                   (avg: 210.587ms)
alt6-mtalk.google.com     74.125.200.188                           (avg: 209.520ms)
alt7-mtalk.google.com     2404:6800:4003:c04::bc                   (avg: 57.608ms)
alt8-mtalk.google.com     74.125.71.188                            (avg: 244.042ms)

# IPv4 only with hosts format
> ./mtalk.sh -4 -host

# Show help
> ./mtalk.sh -h

Output

The tool generates optimized configurations for:

• AdGuardHome: DNS rewrites for FCM domains
• Hosts file: Direct IP mappings for /etc/hosts

License

This project is open source and available under the MIT License.