classoff.com - robtex.com
classoff.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 13.248.243.5🇺🇸 Amazon13.248.240.0/20 | ||||||
| PTR | a16e665f42988324c.awsglobalaccelerator.com | ||||||
| A | 76.223.105.230🇺🇸 Amazon76.223.96.0/20 | ||||||
| NS | ns07.domaincontrol.com ⭐ | ||||||
| A | 2603:5:2170::4🇺🇸 GODADDY-DNS2603:5:2170::/44 | ||||||
| PTR | ns07.domaincontrol.com | ||||||
| A | 97.74.103.4🇺🇸 GODADDY-DNS97.74.102.0/23 | ||||||
| PTR | ns07.domaincontrol.com | ||||||
| NS | ns08.domaincontrol.com | ||||||
| A | 2603:5:2270::4🇺🇸 GODADDY-DNS2603:5:2270::/44 | ||||||
| PTR | ns08.domaincontrol.com | ||||||
| A | 173.201.71.4🇺🇸 GODADDY-DNS173.201.70.0/23 | ||||||
| PTR | ns08.domaincontrol.com | ||||||
| MX | mxa.mailgun.org ⭐ | ||||||
| A | 34.36.182.139🇺🇸 Google34.32.0.0/11 | ||||||
| PTR | 139.182.36.34.bc.googleusercontent.com | ||||||
| MX | mxb.mailgun.org ⭐ | ||||||
| A | 34.36.182.139🇺🇸 Google34.32.0.0/11 | ||||||
| PTR | 139.182.36.34.bc.googleusercontent.com | ||||||
| TXT | v=spf1 include:mailgun.org ~all | ||||||
| SOA | ns07.domaincontrol.comdns@jomax.net 2026-05-19 #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=1784294297 | ||||||
Same first word
classoff.com |
Similar names
DNS History
13 records (6 active, 7 former)
●NSns07.domaincontrol.com2026-05-13 → 2026-07-17 · 3 obs
● 2026-05-13 12:02:32
● 2026-07-17 13:21:28
●NSns08.domaincontrol.com2026-05-13 → 2026-07-17 · 3 obs
● 2026-05-13 12:02:32
● 2026-07-17 13:21:28
○NSns57.domaincontrol.com2015-06-12 → 2017-12-23 · 4 obs
● 2017-12-23 09:53:20
○ 2026-02-22 18:36:18
○ 2026-07-17 13:21:28
○NSns58.domaincontrol.com2015-06-12 → 2017-12-23 · 4 obs
● 2017-12-23 09:53:20
○ 2026-02-22 18:36:18
○ 2026-07-17 13:21:28
○MXmailstore1.secureserver.net2015-06-12 → 2017-12-23 · 4 obs
● 2017-12-23 09:53:20
○ 2026-02-22 18:36:18
○ 2026-07-17 13:21:28
●MXmxa.mailgun.org2026-07-17 → 2026-07-17 · 3 obs
● 2026-07-17 13:21:26
● 2026-07-17 13:21:28
●MXmxb.mailgun.org2026-07-17 → 2026-07-17 · 3 obs
● 2026-07-17 13:21:26
● 2026-07-17 13:21:28
○MXsmtp.secureserver.net2015-06-12 → 2017-12-23 · 4 obs
● 2017-12-23 09:53:20
○ 2026-02-22 18:36:18
○ 2026-07-17 13:21:28
●A13.248.243.52026-07-17 → 2026-07-17 · 3 obs
● 2026-07-17 13:21:26
● 2026-07-17 13:21:28
○A15.197.148.332026-05-13 → 2026-05-13 · 4 obs
● 2026-05-13 12:02:32
○ 2026-07-17 13:21:26
○ 2026-07-17 13:21:28
○A3.33.130.1902026-05-13 → 2026-05-13 · 4 obs
● 2026-05-13 12:02:32
○ 2026-07-17 13:21:26
○ 2026-07-17 13:21:28
○A50.63.202.322015-06-12 → 2017-12-23 · 4 obs
● 2017-12-23 09:53:20
○ 2026-02-22 18:36:18
○ 2026-07-17 13:21:28
●A76.223.105.2302026-07-17 → 2026-07-17 · 3 obs
● 2026-07-17 13:21:26
● 2026-07-17 13:21:28
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | b.gtld-servers.net, f.gtld-servers.net, h.gtld-servers.net, c.gtld-servers.net... | - |
| classoff.com | ns07.domaincontrol.com, ns08.domaincontrol.com | 4 records |
✅ Authoritative Response
Server:173.201.71.4
NS records: ns07.domaincontrol.com, ns08.domaincontrol.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for classoff.com (unsigned zone)
⏱️ Timing
Total: 385ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 76.223.105.230, 13.248.243.5 |
| NS | 2 | ns07.domaincontrol.com, ns08.domaincontrol.com |
| MX | 2 | mxa.mailgun.org (pri: 60), mxb.mailgun.org (pri: 60) |
| TXT | 1 | v=spf1 include:mailgun.org ~all |
| SOA | 1 | ns07.domaincontrol.com dns.jomax.net |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns07.domaincontrol.com, ns07.domaincontrol.com, ns08.domaincontrol.com...)
Analysis
IP Addresses
classoff.com has two IP addresses: 13.248.243.5 and 76.223.105.230
Additional host names — pixelbatch.com, owltreegames.com, securecrc.com and two others — share IP numbers with classoff.com.
Name Servers
DNS delegation for classoff.com points to two name servers: ns07.domaincontrol.com and ns08.domaincontrol.com.
classoff.com shares its name server setup with other domains, including shopee.me, mybiblereader.com, yarahbravo.com and two others.
ns07.domaincontrol.com directs to 97.74.103.4 and 2603:5:2170::4. ns08.domaincontrol.com directs to 173.201.71.4 and 2603:5:2270::4. Each host name carries two IP addresses.
Mail Servers
classoff.com has two mail servers: mxa.mailgun.org and mxb.mailgun.org.
classoff.com shares the same mail server setup as other domains, including hippocriticoath.net, visse.rs, kinnisons.com and two others.
classoff.com shares mail servers — at least in part — with other domains, including www.endpolionowguernseyshop.org, circasports.com, genuino.world and two others.
These mail servers are frequently used alongside the mail servers aspmx.l.google.com, alt1.aspmx.l.google.com and alt2.aspmx.l.google.com, plus two others.
Both mxa.mailgun.org and mxb.mailgun.org have a single IP address, 34.36.182.139, and share it.
Host names pointing to 34.36.182.139 IP addresses: mxa.mailgun.org and mxb.mailgun.org.