Anomaly
WhatsApp is likely blocked
Instant Messaging
Runtime: 15.5s
On September 27, 2025, 01:56 PM UTC, the testing of WhatsApp's web interface (web.whatsapp.com) presented signs of blocking on 18419 in Taiwan.
This might mean that web.whatsapp.com was blocked, but false positives can occur.
Please explore the network measurement data below. Check other WhatsApp measurements from the same network during the same time period (if they're available).
Mobile App
Okay
WhatsApp Web
Failed
Registration
Okay
Endpoint Status
Connection to 3.33.252.61:443 was successful.
Connection to 15.197.210.208:443 was successful.
Connection to 3.33.221.48:5222 was successful.
Connection to 15.197.210.208:5222 was successful.
Connection to 15.197.206.217:443 was successful.
Connection to 15.197.210.208:5222 was successful.
Connection to 15.197.210.208:443 was successful.
Connection to 3.33.221.48:443 was successful.
Connection to 3.33.221.48:443 was successful.
Connection to 15.197.210.208:5222 was successful.
Connection to 15.197.210.208:443 was successful.
Connection to 15.197.206.217:5222 was successful.
Connection to 3.33.221.48:5222 was successful.
Connection to 15.197.210.208:5222 was successful.
Connection to 3.33.221.48:443 was successful.
Connection to 15.197.210.208:443 was successful.
Connection to 3.33.252.61:5222 was successful.
Connection to 3.33.221.48:443 was successful.
Connection to 15.197.210.208:443 was successful.
Connection to 15.197.210.208:443 was successful.
Connection to 3.33.221.48:443 was successful.
Connection to 15.197.210.208:5222 was successful.
Connection to 3.33.221.48:443 was successful.
Connection to 3.33.221.48:5222 was successful.
Connection to 3.33.221.48:5222 was successful.
Connection to 3.33.221.48:443 was successful.
Connection to 3.33.221.48:5222 was successful.
Connection to 3.33.221.48:5222 was successful.
Connection to 3.33.252.61:5222 was successful.
Connection to 3.33.221.48:5222 was successful.
Connection to 15.197.210.208:5222 was successful.
Connection to 3.33.252.61:443 was successful.
Connection to 31.13.87.51:443 was successful.
Connection to 31.13.87.51:443 failed.
Resolver
Resolver ASN
AS13335
Resolver IP
172.68.106.96
Resolver Network Name
Cloudflare Inc
Report ID
20250927T135627Z_whatsapp_TW_18419_n4_zBYzlHjOP3e65NKY
Platform
windows
Software Name
ooniprobe-desktop-unattended (3.19.2)
Measurement Engine
ooniprobe-engine (3.19.2)