physicclassroom.com - robtex.com
physicclassroom.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 172.98.192.44🇺🇸 DACENTEC-1172.98.192.0/21 ARIN Allocation 6/17/2015 | ||||||
| NS | ns1.smtmdns.com ⭐ | ||||||
| A | 172.98.192.42🇺🇸 DACENTEC-1172.98.192.0/21 ARIN Allocation 6/17/2015 | ||||||
| NS | ns2.smtmdns.com | ||||||
| A | 95.211.134.248🇳🇱 LEASEWEB-NL-AMS-0195.211.0.0/16 LEASEWEB | ||||||
| SOA | ns1.smtmdns.comadmin@physicclassroom.com 2026-07-14 #0 | ||||||
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=1784086837 | ||||||
Same first word
physicclassroom.com |
Similar names
DNS History
17 records (3 active, 14 former)
○NSns1.above.com2015-08-22 → 2016-05-14 · 4 obs
● 2015-08-22 03:11:18
● 2016-05-14 16:20:48
○ 2017-02-07 06:53:52
○ 2026-07-15 03:49:42
● 2016-05-14 16:20:48
○ 2017-02-07 06:53:52
○ 2026-07-15 03:49:42
○NSns1.dnsnuts.com2017-02-07 → 2017-02-07 · 4 obs
○ 2016-05-14 16:20:48
● 2017-02-07 06:53:52
○ 2020-01-04 14:48:36
○ 2026-07-15 03:49:42
● 2017-02-07 06:53:52
○ 2020-01-04 14:48:36
○ 2026-07-15 03:49:42
●NSns1.smtmdns.com2020-01-04 → 2026-07-15 · 3 obs
○ 2017-02-07 06:53:52
● 2020-01-04 14:48:36
● 2026-07-15 03:49:42
● 2020-01-04 14:48:36
● 2026-07-15 03:49:42
○NSns2.above.com2015-08-22 → 2016-05-14 · 4 obs
● 2015-08-22 03:11:18
● 2016-05-14 16:20:48
○ 2017-02-07 06:53:52
○ 2026-07-15 03:49:42
● 2016-05-14 16:20:48
○ 2017-02-07 06:53:52
○ 2026-07-15 03:49:42
○NSns2.dnsnuts.com2017-02-07 → 2017-02-07 · 4 obs
○ 2016-05-14 16:20:48
● 2017-02-07 06:53:52
○ 2020-01-04 14:48:36
○ 2026-07-15 03:49:42
● 2017-02-07 06:53:52
○ 2020-01-04 14:48:36
○ 2026-07-15 03:49:42
●NSns2.smtmdns.com2020-01-04 → 2026-07-15 · 3 obs
○ 2017-02-07 06:53:52
● 2020-01-04 14:48:36
● 2026-07-15 03:49:42
● 2020-01-04 14:48:36
● 2026-07-15 03:49:42
○MXmail.post-host.net2015-08-22 → 2016-05-14 · 4 obs
● 2015-08-22 03:11:18
● 2016-05-14 16:20:48
○ 2017-02-07 06:53:52
○ 2026-07-15 03:49:42
● 2016-05-14 16:20:48
○ 2017-02-07 06:53:52
○ 2026-07-15 03:49:42
○A103.224.182.2452015-08-22 → 2016-05-14 · 4 obs
● 2015-08-22 03:11:18
● 2016-05-14 16:20:48
○ 2017-02-07 06:53:52
○ 2026-07-15 03:49:42
● 2016-05-14 16:20:48
○ 2017-02-07 06:53:52
○ 2026-07-15 03:49:42
○A167.114.156.2142017-02-07 → 2017-02-07 · 4 obs
○ 2016-05-14 16:20:48
● 2017-02-07 06:53:52
○ 2020-01-04 14:48:36
○ 2026-07-15 03:49:42
● 2017-02-07 06:53:52
○ 2020-01-04 14:48:36
○ 2026-07-15 03:49:42
○A172.98.192.432026-04-05 → 2026-04-05 · 4 obs
○ 2026-03-30 21:20:08
● 2026-04-05 22:38:10
○ 2026-04-08 14:14:52
○ 2026-07-15 03:49:42
● 2026-04-05 22:38:10
○ 2026-04-08 14:14:52
○ 2026-07-15 03:49:42
●A172.98.192.442026-02-20 → 2026-07-15 · 4 obs
○ 2026-02-17 01:06:46
● 2026-02-20 16:29:58
○ 2026-03-30 14:39:54
● 2026-07-15 03:49:42
● 2026-02-20 16:29:58
○ 2026-03-30 14:39:54
● 2026-07-15 03:49:42
○A172.98.192.462026-04-09 → 2026-04-09 · 4 obs
○ 2026-04-08 14:14:52
● 2026-04-09 06:29:36
○ 2026-04-22 03:43:32
○ 2026-07-15 03:49:42
● 2026-04-09 06:29:36
○ 2026-04-22 03:43:32
○ 2026-07-15 03:49:42
○A212.32.254.362026-07-10 → 2026-07-10 · 3 obs
○ 2026-04-22 03:43:32
● 2026-07-10 04:02:02
○ 2026-07-15 03:49:42
● 2026-07-10 04:02:02
○ 2026-07-15 03:49:42
○A212.32.254.562026-03-30 → 2026-03-30 · 4 obs
○ 2026-02-20 16:29:58
● 2026-03-30 14:39:54
○ 2026-03-30 21:20:08
○ 2026-07-15 03:49:42
● 2026-03-30 14:39:54
○ 2026-03-30 21:20:08
○ 2026-07-15 03:49:42
○A212.32.254.592026-02-17 → 2026-04-08 · 7 obs
○ 2020-01-04 14:48:36
● 2026-02-17 01:06:46
○ 2026-02-20 16:29:58
○ 2026-04-05 22:38:10
● 2026-04-08 14:14:52
○ 2026-04-09 06:29:36
○ 2026-07-15 03:49:42
● 2026-02-17 01:06:46
○ 2026-02-20 16:29:58
○ 2026-04-05 22:38:10
● 2026-04-08 14:14:52
○ 2026-04-09 06:29:36
○ 2026-07-15 03:49:42
○A5.39.99.502017-02-07 → 2017-02-07 · 4 obs
○ 2016-05-14 16:20:48
● 2017-02-07 06:53:52
○ 2026-02-17 01:06:46
○ 2026-07-15 03:49:42
● 2017-02-07 06:53:52
○ 2026-02-17 01:06:46
○ 2026-07-15 03:49:42
○A95.211.189.1522020-01-04 → 2020-01-04 · 4 obs
○ 2017-02-07 06:53:52
● 2020-01-04 14:48:36
○ 2026-02-17 01:06:46
○ 2026-07-15 03:49:42
● 2020-01-04 14:48:36
○ 2026-02-17 01:06:46
○ 2026-07-15 03:49:42
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | f.gtld-servers.net, b.gtld-servers.net, j.gtld-servers.net, a.gtld-servers.net... | - |
| physicclassroom.com | ns1.smtmdns.com, ns2.smtmdns.com | 2 records |
✅ Authoritative Response
Server:95.211.134.248
NS records: ns1.smtmdns.com, ns2.smtmdns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for physicclassroom.com (unsigned zone)
⏱️ Timing
Total: 450ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 212.32.254.36 |
| NS | 2 | ns1.smtmdns.com, ns2.smtmdns.com |
| SOA | 1 | ns1.smtmdns.com admin.physicclassroom.co |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns1.smtmdns.com, ns2.smtmdns.com)
Analysis
IP Addresses
physicclassroom.com points to a single IP number: 172.98.192.44.
Additional host names — livecores.com, scappino.nl, exsper.nl and two others — share IP numbers with physicclassroom.com.
Name Servers
physicclassroom.com has two authoritative name servers — ns1.smtmdns.com and ns2.smtmdns.com.
physicclassroom.com shares its name server setup with other domains, including abez.com, clibex.com, cliniclows.nl and two others.
ns1.smtmdns.com resolves to 172.98.192.42. ns2.smtmdns.com resolves to 95.211.134.248. Both host names point to a single IP number.