pretutor.com - robtex.com
pretutor.com
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=1774556942 | ||||||
Previously MX for
pretutor.com |
Subdomains
mx.pretutor.com |
Same first word
pretutor.com |
Similar names
DNS History
9 records (4 active, 5 former)
●NSns1.dyna-ns.net2026-03-26 → 2026-03-26 · 3 obs
● 2026-03-26 17:33:00
● 2026-03-26 20:29:50
○NSns1.speedydns.net2015-08-10 → 2016-12-09 · 4 obs
● 2016-12-09 10:37:46
○ 2017-06-23 05:43:28
○ 2026-03-26 20:29:50
●NSns2.dyna-ns.net2026-03-26 → 2026-03-26 · 3 obs
● 2026-03-26 17:33:00
● 2026-03-26 20:29:50
○NSns2.speedydns.net2015-08-10 → 2016-12-09 · 4 obs
● 2016-12-09 10:37:46
○ 2017-06-23 05:43:28
○ 2026-03-26 20:29:50
○NSns3.speedydns.net2015-08-10 → 2016-12-09 · 4 obs
● 2016-12-09 10:37:46
○ 2017-06-23 05:43:28
○ 2026-03-26 20:29:50
○MXpretutor.com2015-08-10 → 2016-12-09 · 4 obs
● 2016-12-09 10:37:46
○ 2017-06-23 05:43:28
○ 2026-03-26 20:29:50
●MXrack-host.net2026-03-26 → 2026-03-26 · 3 obs
● 2026-03-26 17:33:00
● 2026-03-26 20:29:50
●A188.214.128.772026-03-26 → 2026-03-26 · 3 obs
● 2026-03-26 17:33:00
● 2026-03-26 20:29:50
○A65.75.138.852015-08-10 → 2016-12-09 · 4 obs
● 2016-12-09 10:37:46
○ 2017-06-23 05:43:28
○ 2026-03-26 20:29:50
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, b.gtld-servers.net, k.gtld-servers.net, j.gtld-servers.net... | - |
| pretutor.com | ns2.dyna-ns.net, ns1.dyna-ns.net | - |
✅ Authoritative Response
Server:162.159.26.92
NS records: ns2.dyna-ns.net, ns1.dyna-ns.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for pretutor.com (unsigned zone)
⏱️ Timing
Total: 427ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 188.214.128.77 |
| NS | 2 | ns2.dyna-ns.net, ns1.dyna-ns.net |
| MX | 1 | rack-host.net (pri: 0) |
| SOA | 1 | ns1.dyna-ns.net hostmaster.pretutor.com |
Analysis
Hierarchy
pretutor.com is the parent of mx.pretutor.com.
IP Addresses
pretutor.com resolves to a single IP: 188.214.128.77.
Other host names, for instance ix.atrato.com, loran.com, jfree.com, ns1.azoree.com and webmail.tb.org share IP numbers with pretutor.com.
Name Servers
pretutor.com has two name servers: ns1.dyna-ns.net and ns2.dyna-ns.net.
pretutor.com shares the same name server setup as other domains, for example xh532.com, slotservices986.de, 16318402884.cfd, buzzwaste.com and 4ya.org.
Host names with four IP numbers:
ns1.dyna-ns.net has four IPs: 2400:cb00:2049:1::a29f:1a5c, 2400:cb00:2049:1::a29f:1b9e, 162.159.26.92 and 162.159.27.158.
ns2.dyna-ns.net has four IPs: 2400:cb00:2049:1::a29f:1805, 2400:cb00:2049:1::a29f:1905, 162.159.24.5 and 162.159.25.5.
Mail Servers
pretutor.com is handled by a single mail server, rack-host.net.
pretutor.com shares the mail server setup with other domains, for example parow.com, cityofnewportbeach.com, developers.org, iphonesmobile.com and airphone.com.
Host name rack-host.net points to IP 208.66.194.178.