classduo.com - robtex.com
classduo.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=1771291435 | ||||||
Same first word
classduo.com |
Similar names
DNS History
14 records (11 active, 3 former)
●NSliz.ns.cloudflare.com2026-02-19 → 2026-03-24 · 3 obs
● 2026-02-19 08:44:40
● 2026-03-24 11:02:28
○NSns57.domaincontrol.com2018-12-28 → 2018-12-28 · 3 obs
○ 2026-02-19 08:44:40
○ 2026-03-24 11:02:28
○NSns58.domaincontrol.com2018-12-28 → 2018-12-28 · 3 obs
○ 2026-02-19 08:44:40
○ 2026-03-24 11:02:28
●NSpablo.ns.cloudflare.com2026-02-19 → 2026-03-24 · 3 obs
● 2026-02-19 08:44:40
● 2026-03-24 11:02:28
●MXalt1.aspmx.l.google.com2026-02-19 → 2026-03-24 · 2 obs
● 2026-03-24 11:02:28
●MXalt2.aspmx.l.google.com2026-02-19 → 2026-03-24 · 2 obs
● 2026-03-24 11:02:28
●MXalt3.aspmx.l.google.com2026-02-19 → 2026-03-24 · 2 obs
● 2026-03-24 11:02:28
●MXalt4.aspmx.l.google.com2026-02-19 → 2026-03-24 · 2 obs
● 2026-03-24 11:02:28
●MXaspmx.l.google.com2026-02-19 → 2026-03-24 · 2 obs
● 2026-03-24 11:02:28
●A104.21.88.1932026-02-19 → 2026-03-24 · 3 obs
● 2026-02-19 08:44:40
● 2026-03-24 11:02:28
●A172.67.186.1402026-02-19 → 2026-03-24 · 3 obs
● 2026-02-19 08:44:40
● 2026-03-24 11:02:28
●A2606:4700:3034::6815:58c12026-02-19 → 2026-03-24 · 3 obs
● 2026-02-19 08:44:40
● 2026-03-24 11:02:28
●A2606:4700:3037::ac43:ba8c2026-02-19 → 2026-03-24 · 3 obs
● 2026-02-19 08:44:40
● 2026-03-24 11:02:28
○A37.120.143.812018-12-28 → 2018-12-28 · 3 obs
○ 2026-02-19 08:44:40
○ 2026-03-24 11:02:28
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | f.gtld-servers.net, g.gtld-servers.net, i.gtld-servers.net, m.gtld-servers.net... | - |
| classduo.com | pablo.ns.cloudflare.com, liz.ns.cloudflare.com | 12 records |
✅ Authoritative Response
Server:108.162.192.189
NS records: pablo.ns.cloudflare.com, liz.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for classduo.com (unsigned zone)
⏱️ Timing
Total: 236ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 172.67.186.140, 104.21.88.193 |
| AAAA | 2 | 2606:4700:3034::6815:58c1, 2606:4700:3037::ac43:ba8c |
| NS | 2 | liz.ns.cloudflare.com, pablo.ns.cloudflare.com |
| MX | 5 | aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)... |
| TXT | 3 | google-site-verification=e5ZzJzLoH7bC1O7, google-site-verification=yzfp_UEokpDkfeM... |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | liz.ns.cloudflare.com dns.cloudflare.com |
📌 Glue Records Collected
Total: 12
Out-of-bailiwick: 12 (pablo.ns.cloudflare.com, pablo.ns.cloudflare.com, pablo.ns.cloudflare.com...)
Analysis
IP Addresses
classduo.com maps to four IP numbers: 2606:4700:3034::6815:58c1, 2606:4700:3037::ac43:ba8c, 104.21.88.193 and 172.67.186.140.
other host names include emodule.in, mip.hc360express.com, wap.hc360express.com, mx7.tnemes.com and solversindia.net; they share IP numbers with classduo.com.
Name Servers
Two name servers liz.ns.cloudflare.com and pablo.ns.cloudflare.com handle the delegation for classduo.com.
classduo.com shares the same name server setup as other domains, for instance hsys.eu, theinfra.com, seattlesinginglady.com, ndr.world and oszczapinski.eu.
classduo.com at least partially shares name servers with other domains, for instance orionmedia.com.br, 224122.com, 032oo.com, pmpgroup.co.nz and rehealth.com.
These name servers are commonly used with gina.ns.cloudflare.com, edward.ns.cloudflare.com, grace.ns.cloudflare.com, zahir.ns.cloudflare.com and leif.ns.cloudflare.com.
Six IP addresses per host:
liz.ns.cloudflare.com points to 2606:4700:50::adf5:3abd, 2803:f800:50::6ca2:c0bd, 2a06:98c1:50::ac40:20bd, 108.162.192.189, 172.64.32.189 and 173.245.58.189; pablo.ns.cloudflare.com points to 2606:4700:58::adf5:3bdc, 2803:f800:50::6ca2:c1dc, 2a06:98c1:50::ac40:21dc, 108.162.193.220, 172.64.33.220 and 173.245.59.220
Mail Servers
classduo.com is served by five mail servers: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt3.aspmx.l.google.com and alt4.aspmx.l.google.com.
classduo.com shares at least partially some mail servers with other domains, for instance ns500724.ns500737.ns500737.ns500599.ns500599.ns500724.ns500724.ns500737.ns500737.ns500697.ns500583.ns500669.yummyflingsfinder.com, ns500671.ns500671.ns500731.ns500754.ns500704.ns500688.ns500705.ns500291.ns500671.ns500666.tenderladiesbz.com, fasttraxllc.com, ns500794.ns500821.ns500821.ns500795.ns500821.ns500795.ns500795.ns500821.ns500795.ns500794.ns500795.ns500790.ns500795.lustypartnersfinder.com and ns500758.ns500758.ns500759.ns500698.ns500759.ns500736.ns500698.ns500698.ns500708.ns500576.ns500698.ns500576.ns500576.trackreceptor.com.
Mail servers frequently appear alongside aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx4.googlemail.com and aspmx5.googlemail.com.
Host names with two IP numbers:
The host name aspmx.l.google.com points to 2607:f8b0:4004:c19::1b and 172.253.62.27.
The host name alt1.aspmx.l.google.com points to 2607:f8b0:4003:c30::1b and 74.125.27.26.
The host name alt2.aspmx.l.google.com points to 2607:f8b0:4001:c70::1a and 192.178.209.26.
The host name alt3.aspmx.l.google.com points to 2607:f8b0:4024:c0d::1b and 192.178.152.26.
The host name alt4.aspmx.l.google.com points to 2607:f8b0:4023:403::1a and 142.250.96.27.