21sysdns.com - robtex.com
21sysdns.com
| DNSSEC | ⚠️ Not signed | ||||||
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1774416637 | ||||||
DNS History
4 records (0 active, 4 former)
○NSns1.21sysdns.com2016-12-13 → 2016-12-13 · 2 obs
● 2016-12-13 22:12:52
○ 2026-03-25 05:58:00
○ 2026-03-25 05:58:00
○NSns2.21sysdns.com2016-12-13 → 2016-12-13 · 2 obs
● 2016-12-13 22:12:52
○ 2026-03-25 05:58:00
○ 2026-03-25 05:58:00
○MXmail.21sysdns.com2016-12-13 → 2016-12-13 · 2 obs
● 2016-12-13 22:12:52
○ 2026-03-25 05:58:00
○ 2026-03-25 05:58:00
○A51.254.120.832016-12-13 → 2016-12-13 · 2 obs
● 2016-12-13 22:12:52
○ 2026-03-25 05:58:00
○ 2026-03-25 05:58:00
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
✅ Authoritative Response
Server:192.31.80.30
NS records: a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net, e.gtld-servers.net, f.gtld-servers.net, g.gtld-servers.net, h.gtld-servers.net, i.gtld-servers.net, j.gtld-servers.net, k.gtld-servers.net, l.gtld-servers.net, m.gtld-servers.net
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 63ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|