Can you open sel.ddns.us from mainland China?
Not sure yet.
There isn't enough recent data to reach a verdict.
2016first tested
2 mo agolast tested
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Other tested URLs on ddns.us
Blocking varies across ddns.us: 25 blocked vs 8 accessible among tested hosts.
http://ddns.usas of 2026Not blockedhttp://4u.ddns.usNot enough datahttp://68.ddns.usNot enough datahttp://an.ddns.usNot enough datahttp://110.ddns.usUnresolvablehttp://119.ddns.usUnresolvablehttp://4us.ddns.usUnresolvablehttp://the.ddns.usNot enough datahttp://eco.ddns.usNot enough datahttp://901.ddns.usas of 2026Blockedhttp://941.ddns.usUnresolvablehttp://069.ddns.usNot enough datahttp://peh.ddns.usNot enough datahttp://sey.ddns.usNot enough datahttp://mal.ddns.usNot enough datahttp://mid.ddns.usNot enough datahttp://mix.ddns.usNot enough datahttp://doc.ddns.usNot enough datahttp://you.ddns.usNot enough datahttp://394.ddns.usNot enough datahttp://rya.ddns.usNot enough datahttp://hug.ddns.usUnresolvablehttp://aas.ddns.usNot enough datahttp://mom.ddns.usNot enough datahttp://buy.ddns.usNot enough datahttp://ing.ddns.usNot enough datahttp://all.ddns.usNot enough datahttp://442.ddns.usas of 2026Blockedhttp://cup.ddns.usNot blockedhttp://hoc.ddns.usBlockedhttp://lod.ddns.usas of 2026Not blockedhttp://737.ddns.usas of 2026Blockedhttp://cit.ddns.usas of 2026Blockedhttp://vag.ddns.usas of 2026Blockedhttp://oka.ddns.usas of 2025Not blockedhttp://vim.ddns.usas of 2026Blockedhttp://yex.ddns.usas of 2025Not blockedhttp://oke8.ddns.usBlockedhttp://bug2.ddns.usas of 2026Blockedhttp://oke1.ddns.usas of 2025Not blockedhttp://baa3.ddns.usas of 2026Blockedhttp://lek2.ddns.usas of 2026Blockedhttp://nou7.ddns.usBlockedhttp://eye3.ddns.usBlockedhttp://gap3.ddns.usas of 2026Blockedhttp://rob3.ddns.usBlockedhttp://dim9.ddns.usas of 2026Blockedhttp://the4.ddns.usNot enough datahttp://pig6.ddns.usNot enough datahttp://poi8.ddns.usNot enough datahttp://poi5.ddns.usNot enough datahttp://dog1.ddns.usNot enough datahttp://nou7.ddns.us/ohas of 2026Not blockedhttp://lek2.ddns.us/xb579as of 2026Blockedhttp://eye3.ddns.us/WsLUZas of 2026Blockedhttp://rob3.ddns.us/xtr/413Blockedhttp://hum4.ddns.us/xtr/109as of 2026Blockedhttp://hum4.ddns.us/xtr/107as of 2026Blockedhttp://oke1.ddns.us/mp4/news86/2016/03/WEB_s31369.mp4as of 2026Blockedhttp://oms3.ddns.us/mp4/news886/2016/02/31219_335999.mp4as of 2026Blockedhttp://din8.ddns.us/mp4/news886/2016/02/31219_335999.mp4as of 2025Not blockedhttp://baa3.ddns.us/mp4/mhph/2015/10/SaveFLGChildren.mp4as of 2025Blockedhttp://rob3.ddns.us/mp4/news829/2016/05/31770_341782.mp4BlockedEach verdict covers the last 90 days of tests, as on that URL's own page.
Frequently asked questions
Is sel.ddns.us blocked in mainland China right now?
As of the last test on 2026-05-17, sel.ddns.us is not enough data in mainland China, based on GreatFire's live Great Firewall measurements.
http://sel.ddns.us · JSON