preptheory.com - robtex.com
preptheory.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 52.20.84.62🇺🇸 Amazon52.20.0.0/14 EC2 IAD prefix | ||||||
| PTR | ec2-52-20-84-62.compute-1.amazonaws.com | ||||||
| NS | ns1.atom.com ⭐ | ||||||
| A | 44.219.81.145🇺🇸 Amazon44.192.0.0/11 EC2 IAD prefix | ||||||
| PTR | ec2-44-219-81-145.compute-1.amazonaws.com | ||||||
| NS | ns2.atom.com | ||||||
| A | 50.19.240.86🇺🇸 Amazon50.19.128.0/17 EC2 IAD prefix | ||||||
| PTR | ec2-50-19-240-86.compute-1.amazonaws.com | ||||||
| TXT | f0095018235b8109a2bf9f65674a1784b6971ed6 | ||||||
| SOA | ns1.atom.comhostmaster@preptheory.com 2025-11-10 #1 | ||||||
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=1774564232 | ||||||
Same first word
preptheory.com |
Similar names
DNS History
8 records (3 active, 5 former)
●NSns1.atom.com2026-03-03 → 2026-03-26 · 3 obs
● 2026-03-03 02:06:02
● 2026-03-26 22:41:40
●NSns2.atom.com2026-03-03 → 2026-03-26 · 3 obs
● 2026-03-03 02:06:02
● 2026-03-26 22:41:40
○NSns53.domaincontrol.com2016-02-26 → 2020-03-21 · 4 obs
● 2020-03-21 20:33:56
○ 2026-03-03 02:06:02
○ 2026-03-26 22:41:40
○NSns54.domaincontrol.com2016-02-26 → 2020-03-21 · 4 obs
● 2020-03-21 20:33:56
○ 2026-03-03 02:06:02
○ 2026-03-26 22:41:40
○MXmailstore1.secureserver.net2016-02-26 → 2020-03-21 · 4 obs
● 2020-03-21 20:33:56
○ 2026-03-03 02:06:02
○ 2026-03-26 22:41:40
○MXsmtp.secureserver.net2016-02-26 → 2020-03-21 · 4 obs
● 2020-03-21 20:33:56
○ 2026-03-03 02:06:02
○ 2026-03-26 22:41:40
○A184.168.221.332016-02-26 → 2020-03-21 · 4 obs
● 2020-03-21 20:33:56
○ 2026-03-03 02:06:02
○ 2026-03-26 22:41:40
●A52.20.84.622026-03-03 → 2026-03-26 · 3 obs
● 2026-03-03 02:06:02
● 2026-03-26 22:41:40
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| preptheory.com | ns1.atom.com, ns2.atom.com | 2 records |
✅ Authoritative Response
Server:44.219.81.145
NS records: ns1.atom.com, ns2.atom.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for preptheory.com (unsigned zone)
⏱️ Timing
Total: 3749ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 52.20.84.62 |
| NS | 2 | ns1.atom.com, ns2.atom.com |
| TXT | 1 | f0095018235b8109a2bf9f65674a1784b6971ed6 |
| SOA | 1 | ns1.atom.com hostmaster.preptheory.com |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns1.atom.com, ns2.atom.com)
Analysis
IP Addresses
preptheory.com points to a single IP address: 52.20.84.62.
Other host names such as certifiedhomeschool.com, teethis.com, vistagym.com, ridelead.com and laptopsonly.com share IP numbers with preptheory.com.
Name Servers
preptheory.com is delegated to two name servers: ns1.atom.com and ns2.atom.com.
preptheory.com uses the same name server setup as other domains, including northbeach.ca, tgifintech.com, adirondack.ca, onbiome.com and wikiwish.com.
At least part of the name servers for preptheory.com are shared with other domains, for instance zdup.com, ctvup.com, e-learning.me, aafaq.com and waverr.com.
Hostnames with a single IP
ns1.atom.com resolves to: 44.219.81.145.
ns2.atom.com resolves to: 50.19.240.86.