open4.com - dns.ninja
open4.com
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns1.tierra.net ⚠️ Not in zone NS records | ||||||
| A | 72.1.32.185🇺🇸 Amazon72.1.32.0/21 EC2 Prefix | ||||||
| PTR | ns1.tierra.net | ||||||
| NS | ns2.tierra.net ⚠️ Not in zone NS records | ||||||
| A | 54.82.141.168🇺🇸 Amazon54.80.0.0/14 EC2 IAD prefix | ||||||
| PTR | ec2-54-82-141-168.compute-1.amazonaws.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=1785119932 | ||||||
Same first word
Similar names
DNS History
4 records (2 active, 2 former)
●NSns1.tierra.net2015-08-18 → 2026-07-27 · 2 obs
● 2026-07-27 03:00:52
●NSns2.tierra.net2015-08-18 → 2026-07-27 · 2 obs
● 2026-07-27 03:00:52
○MXmail.messaging.microsoft.com2015-08-18 → 2017-02-06 · 4 obs
● 2017-02-06 18:25:04
○ 2026-02-21 19:34:08
○ 2026-07-27 03:00:52
○A209.240.149.1522015-08-18 → 2017-02-06 · 4 obs
● 2017-02-06 18:25:04
○ 2026-02-21 19:34:08
○ 2026-07-27 03:00:52
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net... | - |
| open4.com | ns1.tierra.net, ns2.tierra.net | - |
✅ Authoritative Response
Server:72.1.32.185
NS records: ns1.tierra.net, ns2.tierra.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for open4.com (unsigned zone)
⏱️ Timing
Total: 464ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|
Analysis
Name Servers
Two name servers handle the delegation for open4.com: ns1.tierra.net and ns2.tierra.net.
open4.com has the same name server delegation as a number of other domains, such as holidayinflatalbles.com, doloresfear.com, bagnodesignlondon.com and two more.
The name servers of open4.com overlap at least partially with those of other domains — among them toxeditions.com, valcarpenter.com, flight-and-auto.com and two more.
These name servers commonly appear alongside the name servers ns1.domaindiscover.com and ns2.domaindiscover.com.
Both ns1.tierra.net and ns2.tierra.net have a single IP address each — ns1.tierra.net resolves to 72.1.32.185 while ns2.tierra.net resolves to 54.82.141.168.