optechtcs.com - robtex.com
optechtcs.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 162.159.140.114Cloudflare162.159.128.0/19 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| A | 172.66.0.112🇺🇸 Cloudflare172.66.0.0/22 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| NS | ns1.reedelsevier.com ⭐ | ||||||
| A | 138.12.4.5🇺🇸 AS32472138.12.0.0/17 | ||||||
| PTR | ns1.reedelsevier.com | ||||||
| NS | ns2.reedelsevier.com | ||||||
| A | 198.176.82.98🇬🇧 REED-ELSEVIER-EMEA-GCC198.176.82.0/24 | ||||||
| NS | ns3.reedelsevier.com | ||||||
| A | 198.176.82.101🇬🇧 REED-ELSEVIER-EMEA-GCC198.176.82.0/24 | ||||||
| PTR | ns3.reedelsevier.com | ||||||
| SOA | ns1.reedelsevier.comhostmaster@elsevier.co.uk 2013-03-22 #46 | ||||||
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=1777347871 | ||||||
Same first word
optechtcs.com |
Similar names
DNS History
10 records (5 active, 5 former)
○NSns.elsevier.co.uk2008-03-14 → 2017-07-21 · 4 obs
● 2017-07-21 22:50:24
○ 2017-08-29 15:18:40
○ 2026-04-28 03:56:26
○NSns0-o.dns.pipex.net2008-03-14 → 2017-07-21 · 4 obs
● 2017-07-21 22:50:24
○ 2017-08-29 15:18:40
○ 2026-04-28 03:56:26
○NSns1-o.dns.pipex.net2008-03-14 → 2017-07-21 · 4 obs
● 2017-07-21 22:50:24
○ 2017-08-29 15:18:40
○ 2026-04-28 03:56:26
●NSns1.reedelsevier.com2017-08-29 → 2026-04-28 · 3 obs
● 2017-08-29 15:18:40
● 2026-04-28 03:56:26
●NSns2.reedelsevier.com2017-08-29 → 2026-04-28 · 3 obs
● 2017-08-29 15:18:40
● 2026-04-28 03:56:26
●NSns3.reedelsevier.com2017-08-29 → 2026-04-28 · 3 obs
● 2017-08-29 15:18:40
● 2026-04-28 03:56:26
○A129.35.69.1032008-03-14 → 2008-03-14 · 3 obs
○ 2015-05-17 18:52:24
○ 2026-04-28 03:56:26
●A162.159.140.1142026-04-20 → 2026-04-28 · 3 obs
● 2026-04-20 08:53:20
● 2026-04-28 03:56:26
●A172.66.0.1122026-04-20 → 2026-04-28 · 3 obs
● 2026-04-20 08:53:20
● 2026-04-28 03:56:26
○A65.156.1.1002015-05-17 → 2017-08-29 · 5 obs
● 2015-05-17 18:52:24
● 2017-08-29 15:18:40
○ 2026-04-20 08:53:20
○ 2026-04-28 03:56:26
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | k.gtld-servers.net, i.gtld-servers.net, m.gtld-servers.net, l.gtld-servers.net... | - |
| optechtcs.com | ns1.reedelsevier.com, ns2.reedelsevier.com, ns3.reedelsevier.com | 3 records |
✅ Authoritative Response
Server:198.176.82.98
NS records: ns1.reedelsevier.com, ns2.reedelsevier.com, ns3.reedelsevier.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for optechtcs.com (unsigned zone)
⏱️ Timing
Total: 3327ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 162.159.140.114, 172.66.0.112 |
| NS | 3 | ns2.reedelsevier.com, ns1.reedelsevier.com... |
| SOA | 1 | ns1.reedelsevier.com hostmaster.elsevier |
📌 Glue Records Collected
Total: 3
Out-of-bailiwick: 3 (ns1.reedelsevier.com, ns2.reedelsevier.com, ns3.reedelsevier.com)
Analysis
IP Addresses
optechtcs.com resolves to two IP numbers: 162.159.140.114 and 172.66.0.112.
Other host names, for instance psychiatricnursing.org, biologicalpsychiatryjournal.com, akdh.net, ooooe.net and jhltopen.org share IP numbers with optechtcs.com.
Name Servers
optechtcs.com is delegated to three name servers: ns1.reedelsevier.com, ns2.reedelsevier.com and ns3.reedelsevier.com.
optechtcs.com partially shares name servers with other domains; examples include lawyertarget.com, ijoms.com, lexisnexis.cm, elsevierapps.com and sciencesurfer.com.
Host names with one IP number:
Host ns1.reedelsevier.com points to 138.12.4.5.
Host ns2.reedelsevier.com points to 198.176.82.98.
Host ns3.reedelsevier.com points to 198.176.82.101.