read21.cn - robtex.com

read21.cn

DNSSEC⚠️ Not signed

cn

DNSSEC🔒 Signed (DS record present)
NSa.dns.cn ⭐
NSb.dns.cn
NSc.dns.cn
NSd.dns.cn
NSe.dns.cn
NSns.cernet.net ⚠️ Not in parent delegation
SOAa.dns.cnroot@cnnic.cn serial=2034670066

Same first word

read21.cn

DNS History

9 records (0 active, 9 former)

20162017201820192020202120222023202420252026NSdns15.hichina.comdns16.hichina.comns1.nowcndns.comns15.xincache.comns16.xincache.comns2.nowcndns.comMX210.52.216.144210.52.216.144A218.213.194.166
○NSdns15.hichina.com2017-03-25 → 2017-03-25 · 4 obs
○ 2016-06-17 20:57:26
● 2017-03-25 18:47:18
○ 2020-01-23 11:13:50
○ 2026-04-14 15:48:14
○NSdns16.hichina.com2017-03-25 → 2017-03-25 · 4 obs
○ 2016-06-17 20:57:26
● 2017-03-25 18:47:18
○ 2020-01-23 11:13:50
○ 2026-04-14 15:48:14
○NSns1.nowcndns.com2026-04-14 → 2026-04-14 · 1 obs
○ 2026-04-14 15:48:14
○NSns15.xincache.com2015-07-21 → 2016-06-17 · 4 obs
● 2015-07-21 01:24:40
● 2016-06-17 20:57:26
○ 2017-03-25 18:47:18
○ 2026-04-14 15:48:14
○NSns16.xincache.com2015-07-21 → 2016-06-17 · 4 obs
● 2015-07-21 01:24:40
● 2016-06-17 20:57:26
○ 2017-03-25 18:47:18
○ 2026-04-14 15:48:14
○NSns2.nowcndns.com2026-04-14 → 2026-04-14 · 1 obs
○ 2026-04-14 15:48:14
○MX210.52.216.1442015-11-21 → 2016-06-17 · 5 obs
○ 2015-07-21 01:24:40
● 2015-11-21 17:55:10
● 2016-06-17 20:57:26
○ 2017-03-25 18:47:18
○ 2026-04-14 15:48:14
○MX210.52.216.1442015-07-21 → 2015-07-21 · 3 obs
● 2015-07-21 01:24:40
○ 2015-11-21 17:55:10
○ 2026-04-14 15:48:14
○A218.213.194.1662015-07-21 → 2016-06-17 · 4 obs
● 2015-07-21 01:24:40
● 2016-06-17 20:57:26
○ 2017-03-25 18:47:18
○ 2026-04-14 15:48:14

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
cna.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn...-

✅ Authoritative Response

Server:203.119.25.1

NS records: a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn, e.dns.cn

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 3678ms | Queries: -

📄 Records

TypeCountSample Data