mathclass.us - robtex.com
mathclass.us
| 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 | ||||||
| SOA | ns1.atom.comhostmaster@mathclass.us 2026-10-22 #1 | ||||||
us
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.cctld.us ⭐ | ||||||
| NS | b.cctld.us | ||||||
| NS | f.cctld.us | ||||||
| NS | k.cctld.us | ||||||
| NS | m.cctld.us | ||||||
| NS | n.cctld.us | ||||||
| NS | w.cctld.us | ||||||
| NS | x.cctld.us | ||||||
| NS | y.cctld.us | ||||||
| SOA | a.cctld.usadmin@tldns.godaddy serial=1792877052 | ||||||
Same first word
Similar names
Previous names
Next names
DNS History
21 records (3 active, 18 former)
○NSdns1.name-services.com2015-07-02 → 2020-03-01 · 4 obs
● 2020-03-01 10:24:46
○ 2026-08-19 08:29:34
○ 2026-10-24 22:07:44
○NSdns2.name-services.com2015-07-02 → 2020-03-01 · 4 obs
● 2020-03-01 10:24:46
○ 2026-08-19 08:29:34
○ 2026-10-24 22:07:44
○NSdns3.name-services.com2015-07-02 → 2020-03-01 · 4 obs
● 2020-03-01 10:24:46
○ 2026-08-19 08:29:34
○ 2026-10-24 22:07:44
○NSdns4.name-services.com2015-07-02 → 2020-03-01 · 4 obs
● 2020-03-01 10:24:46
○ 2026-08-19 08:29:34
○ 2026-10-24 22:07:44
●NSns1.atom.com2026-10-24 → 2026-10-24 · 3 obs
● 2026-10-24 22:07:38
● 2026-10-24 22:07:44
○NSns1.dyna-ns.net2026-08-19 → 2026-10-15 · 6 obs
● 2026-08-19 08:29:34
○ 2026-08-22 00:20:18
● 2026-10-15 04:11:30
○ 2026-10-24 22:07:38
○ 2026-10-24 22:07:44
○NSns1.mathclass.us2026-08-22 → 2026-08-22 · 4 obs
● 2026-08-22 00:20:18
○ 2026-10-15 04:11:30
○ 2026-10-24 22:07:44
●NSns2.atom.com2026-10-24 → 2026-10-24 · 3 obs
● 2026-10-24 22:07:38
● 2026-10-24 22:07:44
○NSns2.dyna-ns.net2026-08-19 → 2026-10-15 · 6 obs
● 2026-08-19 08:29:34
○ 2026-08-22 00:20:18
● 2026-10-15 04:11:30
○ 2026-10-24 22:07:38
○ 2026-10-24 22:07:44
○NSns2.mathclass.us2026-08-22 → 2026-08-22 · 4 obs
● 2026-08-22 00:20:18
○ 2026-10-15 04:11:30
○ 2026-10-24 22:07:44
○NSns71.cloudns.net2026-09-26 → 2026-09-26 · 4 obs
● 2026-09-26 08:15:30
○ 2026-10-15 04:11:30
○ 2026-10-24 22:07:44
○NSpns72.cloudns.net2026-09-26 → 2026-09-26 · 4 obs
● 2026-09-26 08:15:30
○ 2026-10-15 04:11:30
○ 2026-10-24 22:07:44
○NSpns73.cloudns.com2026-09-26 → 2026-09-26 · 4 obs
● 2026-09-26 08:15:30
○ 2026-10-15 04:11:30
○ 2026-10-24 22:07:44
○NSpns74.cloudns.uk2026-09-26 → 2026-09-26 · 4 obs
● 2026-09-26 08:15:30
○ 2026-10-15 04:11:30
○ 2026-10-24 22:07:44
○MXmx.mathclass.us2026-09-26 → 2026-09-26 · 3 obs
○ 2026-10-15 04:11:30
○ 2026-10-24 22:07:44
○A45.8.44.82026-09-26 → 2026-09-26 · 4 obs
● 2026-09-26 08:15:30
○ 2026-10-15 04:11:30
○ 2026-10-24 22:07:44
●A52.20.84.622026-10-24 → 2026-10-24 · 3 obs
● 2026-10-24 22:07:38
● 2026-10-24 22:07:44
○A54.215.31.1132026-10-15 → 2026-10-15 · 4 obs
● 2026-10-15 04:11:30
○ 2026-10-24 22:07:38
○ 2026-10-24 22:07:44
○A98.124.198.12015-07-02 → 2015-11-13 · 4 obs
● 2015-11-13 12:23:16
○ 2016-02-11 22:24:22
○ 2026-10-24 22:07:44
○A98.124.199.12015-07-02 → 2015-07-02 · 3 obs
○ 2026-08-19 08:29:34
○ 2026-10-24 22:07:44
○A98.124.199.692016-02-11 → 2020-03-01 · 5 obs
● 2016-02-11 22:24:22
● 2020-03-01 10:24:46
○ 2026-08-19 08:29:34
○ 2026-10-24 22:07:44
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| us | y.cctld.us, x.cctld.us, w.cctld.us, m.cctld.us... | - |
| mathclass.us | ns1.atom.com, ns2.atom.com | - |
✅ Authoritative Response
Server:50.19.240.86
NS records: ns1.atom.com, ns2.atom.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for mathclass.us (unsigned zone)
⏱️ Timing
Total: 436ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 52.20.84.62 |
| NS | 2 | ns2.atom.com, ns1.atom.com |
| SOA | 1 | ns1.atom.com hostmaster.mathclass.us |
Analysis
IP Addresses
mathclass.us points to a single IP number: 52.20.84.62.
Additional host names — scorepak.com, bizfalcon.com, greenbuilding.si and two others — share IP numbers with mathclass.us.
Name Servers
mathclass.us uses two name servers for its delegation: ns1.atom.com and ns2.atom.com.
mathclass.us shares its name server setup with other domains, including tuhkvantage.com, fairgoldcoin.com, ckn.us and two others.
mathclass.us has some name servers in common with other domains such as assetspread.com, branlund.com and mahakim.com
These name servers often co-occur with the name servers verification-yhehuhyrvixzqbtydgzisf.ns101.verify.hn.
ns1.atom.com resolves to 44.219.81.145. ns2.atom.com resolves to 50.19.240.86. Both host names point to a single IP number.