77sci.cn - robtex.com

77sci.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=2035099058

DNS History

6 records (0 active, 6 former)

NSns1.judns.comns1.julydns.comns2.judns.comns2.julydns.comMXhzmx01.mxmail.netease.comhzmx02.mxmail.netease.com
○NSns1.judns.com2026-04-11 → 2026-04-19 · 4 obs
● 2026-04-11 15:35:46
● 2026-04-19 05:27:32
○ 2026-07-26 05:30:06
○ 2026-07-28 01:39:30
○NSns1.julydns.com2026-04-11 → 2026-04-19 · 4 obs
● 2026-04-11 15:35:46
● 2026-04-19 05:27:32
○ 2026-07-26 05:30:06
○ 2026-07-28 01:39:30
○NSns2.judns.com2026-04-11 → 2026-04-19 · 4 obs
● 2026-04-11 15:35:46
● 2026-04-19 05:27:32
○ 2026-07-26 05:30:06
○ 2026-07-28 01:39:30
○NSns2.julydns.com2026-04-11 → 2026-04-19 · 4 obs
● 2026-04-11 15:35:46
● 2026-04-19 05:27:32
○ 2026-07-26 05:30:06
○ 2026-07-28 01:39:30
○MXhzmx01.mxmail.netease.com2026-04-11 → 2026-04-19 · 4 obs
● 2026-04-11 15:35:46
● 2026-04-19 05:27:32
○ 2026-07-26 05:30:06
○ 2026-07-28 01:39:30
○MXhzmx02.mxmail.netease.com2026-04-11 → 2026-04-19 · 4 obs
● 2026-04-11 15:35:46
● 2026-04-19 05:27:32
○ 2026-07-26 05:30:06
○ 2026-07-28 01:39:30

🔍 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: 1309ms | Queries: -

📄 Records

TypeCountSample Data