smtp4u.com - robtex.com
smtp4u.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=1774518757 | ||||||
Previously MX for
Subdomains
Same first word
DNS History
4 records (0 active, 4 former)
○NSns1.rapidns.com2009-01-27 → 2017-05-19 · 4 obs
● 2009-01-27 19:03:14
● 2017-05-19 08:30:36
○ 2026-03-15 07:25:56
○ 2026-03-26 10:22:42
● 2017-05-19 08:30:36
○ 2026-03-15 07:25:56
○ 2026-03-26 10:22:42
○NSns2.rapidns.com2009-01-27 → 2017-05-19 · 4 obs
● 2009-01-27 19:03:14
● 2017-05-19 08:30:36
○ 2026-03-15 07:25:56
○ 2026-03-26 10:22:42
● 2017-05-19 08:30:36
○ 2026-03-15 07:25:56
○ 2026-03-26 10:22:42
○MXmail.smtp4u.com2009-01-27 → 2009-01-27 · 3 obs
● 2009-01-27 19:03:14
○ 2015-07-16 03:24:22
○ 2026-03-26 10:22:42
○ 2015-07-16 03:24:22
○ 2026-03-26 10:22:42
○A209.120.245.592009-01-27 → 2017-05-19 · 4 obs
● 2009-01-27 19:03:14
● 2017-05-19 08:30:36
○ 2026-03-15 07:25:56
○ 2026-03-26 10:22:42
● 2017-05-19 08:30:36
○ 2026-03-15 07:25:56
○ 2026-03-26 10:22:42
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | h.gtld-servers.net, m.gtld-servers.net, g.gtld-servers.net, b.gtld-servers.net... | - |
✅ Authoritative Response
Server:192.43.172.30
NS records: h.gtld-servers.net, m.gtld-servers.net, g.gtld-servers.net, b.gtld-servers.net, j.gtld-servers.net, d.gtld-servers.net, l.gtld-servers.net, f.gtld-servers.net, a.gtld-servers.net, i.gtld-servers.net, e.gtld-servers.net, k.gtld-servers.net, c.gtld-servers.net
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 173ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|