grid2000.com.cn - robtex.com

grid2000.com.cn

DNSSEC⚠️ Not signed

com.cn

DNSSEC⚠️ Not signed
NSa.dns.cn ⭐ ⚠️ Not in parent delegation
NSb.dns.cn ⚠️ Not in parent delegation
NSc.dns.cn ⚠️ Not in parent delegation
NScns.cernet.net ⚠️ Not in parent delegation
NSd.dns.cn ⚠️ Not in parent delegation
NSe.dns.cn ⚠️ Not in parent delegation
SOAa.dns.cnroot@cnnic.cn serial=2030558110
WOT: NOT_SAFE (20/100)

DNS History

7 records (0 active, 7 former)

2017201820192020202120222023202420252026NSns1.nowcndns.comns2.dnsdun.comns2.nowcndns.comns4.dnsdun.netA191.214.162.103199.168.97.21974.91.29.90
○NSns1.nowcndns.com2026-02-19 → 2026-03-23 · 5 obs
○ 2017-12-16 22:22:48
● 2026-02-19 16:04:58
● 2026-03-23 12:49:06
○ 2026-03-30 13:10:18
○ 2026-05-09 10:07:20
○NSns2.dnsdun.com2016-04-17 → 2017-01-01 · 4 obs
● 2016-04-17 01:52:42
● 2017-01-01 03:43:20
○ 2017-12-16 22:22:48
○ 2026-05-09 10:07:20
○NSns2.nowcndns.com2026-02-19 → 2026-03-23 · 5 obs
○ 2017-12-16 22:22:48
● 2026-02-19 16:04:58
● 2026-03-23 12:49:06
○ 2026-03-30 13:10:18
○ 2026-05-09 10:07:20
○NSns4.dnsdun.net2016-04-17 → 2017-01-01 · 4 obs
● 2016-04-17 01:52:42
● 2017-01-01 03:43:20
○ 2017-12-16 22:22:48
○ 2026-05-09 10:07:20
○A191.214.162.1032026-02-19 → 2026-03-23 · 5 obs
○ 2017-12-16 22:22:48
● 2026-02-19 16:04:58
● 2026-03-23 12:49:06
○ 2026-03-30 13:10:18
○ 2026-05-09 10:07:20
○A199.168.97.2192017-01-01 → 2017-01-01 · 4 obs
○ 2016-04-17 01:52:42
● 2017-01-01 03:43:20
○ 2017-12-16 22:22:48
○ 2026-05-09 10:07:20
○A74.91.29.902016-04-17 → 2016-04-17 · 3 obs
● 2016-04-17 01:52:42
○ 2017-01-01 03:43:20
○ 2026-05-09 10:07:20

🔍 DNS Trace

📋 Delegation Chain

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

✅ Authoritative Response

Server:203.119.28.1

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

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 891ms | Queries: -

📄 Records

TypeCountSample Data