sertech.us - dns.ninja
sertech.us
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=1781688663 | ||||||
PTR for
Subdomains
Same first word
Similar names
DNS History
15 records (8 active, 7 former)
●NSns1.linode.com2016-07-25 → 2026-06-17 · 3 obs
● 2016-07-25 23:29:56
● 2026-06-17 09:55:20
●NSns2.linode.com2016-07-25 → 2026-06-17 · 3 obs
● 2016-07-25 23:29:56
● 2026-06-17 09:55:20
○NSns25.domaincontrol.com2015-08-05 → 2016-03-27 · 4 obs
● 2016-03-27 04:55:26
○ 2016-07-25 23:29:56
○ 2026-06-17 09:55:20
○NSns26.domaincontrol.com2015-08-05 → 2016-03-27 · 4 obs
● 2016-03-27 04:55:26
○ 2016-07-25 23:29:56
○ 2026-06-17 09:55:20
●NSns3.linode.com2016-07-25 → 2026-06-17 · 3 obs
● 2016-07-25 23:29:56
● 2026-06-17 09:55:20
●NSns4.linode.com2016-07-25 → 2026-06-17 · 3 obs
● 2016-07-25 23:29:56
● 2026-06-17 09:55:20
●NSns5.linode.com2016-07-25 → 2026-06-17 · 3 obs
● 2016-07-25 23:29:56
● 2026-06-17 09:55:20
●MXmail.sertech.us2016-07-25 → 2026-06-17 · 3 obs
● 2016-07-25 23:29:56
● 2026-06-17 09:55:20
○MXmailstore1.secureserver.net2015-08-05 → 2016-03-27 · 4 obs
● 2016-03-27 04:55:26
○ 2016-07-25 23:29:56
○ 2026-06-17 09:55:20
○MXsmtp.secureserver.net2015-08-05 → 2016-03-27 · 4 obs
● 2016-03-27 04:55:26
○ 2016-07-25 23:29:56
○ 2026-06-17 09:55:20
○A160.153.61.1972015-08-05 → 2016-03-27 · 4 obs
● 2016-03-27 04:55:26
○ 2016-07-25 23:29:56
○ 2026-06-17 09:55:20
○A2600:3c02::f03c:91ff:fe08:3e3e2016-07-25 → 2017-04-11 · 5 obs
● 2016-07-25 23:29:56
● 2017-04-11 05:08:08
○ 2020-11-30 04:26:46
○ 2026-06-17 09:55:20
●A2600:3c02::f03c:91ff:fe4d:e1362020-11-30 → 2026-06-17 · 3 obs
● 2020-11-30 04:26:46
● 2026-06-17 09:55:20
○A45.79.214.1122016-07-25 → 2017-04-11 · 5 obs
● 2016-07-25 23:29:56
● 2017-04-11 05:08:08
○ 2020-11-30 04:26:46
○ 2026-06-17 09:55:20
●A74.207.230.1302020-11-30 → 2026-06-17 · 3 obs
● 2020-11-30 04:26:46
● 2026-06-17 09:55:20
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| us | b.cctld.us, f.cctld.us, k.cctld.us, m.cctld.us... | - |
| sertech.us | ns3.linode.com, ns4.linode.com, ns1.linode.com, ns2.linode.com... | - |
✅ Authoritative Response
Server:92.123.94.2
NS records: ns3.linode.com, ns4.linode.com, ns1.linode.com, ns2.linode.com, ns5.linode.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for sertech.us (unsigned zone)
⏱️ Timing
Total: 457ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 74.207.230.130 |
| AAAA | 1 | 2600:3c02::f03c:91ff:fe4d:e136 |
| NS | 5 | ns2.linode.com, ns4.linode.com... |
| MX | 1 | mail.sertech.us (pri: 10) |
| TXT | 2 | v=spf1 a mx ip4:74.207.230.130 ip6:2600:, google-site-verification=ARlX8LXuzd8G0o5 |
| SOA | 1 | ns1.linode.com administrator.sertech.us |
Analysis
Hierarchy
www.sertech.us and mail.sertech.us are both subdomains of sertech.us.
IP Addresses
sertech.us resolves to the IP addresses 74.207.230.130 and 2600:3c02::f03c:91ff:fe4d:e136
Host names such as mail.sertech.us and www.sertech.us share IP numbers with sertech.us.
Name Servers
sertech.us has five name servers, which are ns1.linode.com, ns2.linode.com, ns3.linode.com and two others.
sertech.us shares at least some of its name servers with other domains, including jelmervanderploeg.com, abraxasdigital.net, vianoke.com and two others.
These name servers are frequently paired with the name servers ns4.linode.com and ns5.linode.com.
Hostnames that resolve to two IP addresses:
ns1.linode.com points to 92.123.94.2 and 2600:14c0:6::2.
ns2.linode.com points to 92.123.94.3 and 2600:14c0:6::3.
ns3.linode.com points to 92.123.95.3 and 2600:14c0:7::3.
ns4.linode.com points to 92.123.95.4 and 2600:14c0:7::4.
ns5.linode.com points to 92.123.95.2 and 2600:14c0:7::2.
Mail Servers
Mail for sertech.us is handled by a single mail server, mail.sertech.us.
mail.sertech.us points to two IP addresses: 74.207.230.130 and 2600:3c02::f03c:91ff:fe4d:e136.