instructus.org - robtex.com
instructus.org
| DNSSEC | ⚠️ Not signed | ||||||
| A | 35.214.120.83🇬🇧 Google | ||||||
| PTR | 83.120.214.35.bc.googleusercontent.com | ||||||
| NS | ns55.domaincontrol.com ⭐ | ||||||
| A | 2603:5:21b2::1c🇺🇸 GODADDY-DNS | ||||||
| PTR | ns55.domaincontrol.com | ||||||
| A | 97.74.107.28🇺🇸 GODADDY-DNS | ||||||
| PTR | ns55.domaincontrol.com | ||||||
| NS | ns56.domaincontrol.com | ||||||
| A | 2603:5:22b2::1c🇺🇸 GODADDY-DNS | ||||||
| PTR | ns56.domaincontrol.com | ||||||
| A | 173.201.75.28🇺🇸 GODADDY-DNS | ||||||
| PTR | ns56.domaincontrol.com | ||||||
| MX | mx1.pcs-systems.com ⭐ | ||||||
| A | 35.178.20.19🇬🇧 Amazon | ||||||
| PTR | mx1.pcs-systems.com | ||||||
| MX | mx2.pcs-systems.com ⭐ | ||||||
| A | 35.177.209.36🇬🇧 Amazon | ||||||
| PTR | mx2.pcs-systems.com | ||||||
| TXT | v=spf1 a mx ip4:64.78.151.128/26 ip4:216.241.183.0/24 ip4:82.197.78.69/32 ip4... | ||||||
| TXT | google-site-verification=Bs54i2ZUMqd7VQ9wK54IN6PP2iEM-b_qSi0KzW0SfFo | ||||||
| SOA | ns55.domaincontrol.comdns@jomax.net 2024-11-21 #1 | ||||||
org
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.org.afilias-nst.info ⭐ ⚠️ Not in parent delegation | ||||||
| NS | a2.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | b0.org.afilias-nst.org | ||||||
| NS | b2.org.afilias-nst.org | ||||||
| NS | c0.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | d0.org.afilias-nst.org | ||||||
| SOA | a0.org.afilias-nst.infohostmaster@donuts.email serial=1771291736 | ||||||
Up
mail.instructus.org |
www.instructus.org |
elearning.instructus.org |
Same first word
instructus.hu |
instructus.hr |
instructus.org |
instructus.com |
Similar names
DNS History
13 records (5 active, 8 former)
○NSdns01.opal-solutions.com2015-08-16 → 2017-03-26 · 4 obs
● 2017-03-26 16:32:16
○ 2020-03-20 01:57:02
○ 2026-02-22 13:19:32
○NSdns02.opal-solutions.com2015-08-16 → 2017-03-26 · 4 obs
● 2017-03-26 16:32:16
○ 2020-03-20 01:57:02
○ 2026-02-22 13:19:32
○NSdns03.opal-solutions.com2015-08-16 → 2017-03-26 · 4 obs
● 2017-03-26 16:32:16
○ 2020-03-20 01:57:02
○ 2026-02-22 13:19:32
○NSns.123-reg.co.uk2020-03-20 → 2020-03-20 · 4 obs
● 2020-03-20 01:57:02
○ 2026-02-15 10:44:14
○ 2026-02-22 13:19:32
○NSns2.123-reg.co.uk2020-03-20 → 2020-03-20 · 4 obs
● 2020-03-20 01:57:02
○ 2026-02-15 10:44:14
○ 2026-02-22 13:19:32
●NSns55.domaincontrol.com2026-02-15 → 2026-02-22 · 3 obs
● 2026-02-15 10:44:14
● 2026-02-22 13:19:32
●NSns56.domaincontrol.com2026-02-15 → 2026-02-22 · 3 obs
● 2026-02-15 10:44:14
● 2026-02-22 13:19:32
○MXinstructus-org.mail.protection.outlook.com2015-08-16 → 2017-03-26 · 4 obs
● 2017-03-26 16:32:16
○ 2020-03-20 01:57:02
○ 2026-02-22 13:19:32
●MXmx1.pcs-systems.com2020-03-20 → 2026-02-22 · 3 obs
● 2020-03-20 01:57:02
● 2026-02-22 13:19:32
●MXmx2.pcs-systems.com2020-03-20 → 2026-02-22 · 3 obs
● 2020-03-20 01:57:02
● 2026-02-22 13:19:32
○A109.203.112.692015-08-16 → 2017-03-26 · 4 obs
● 2017-03-26 16:32:16
○ 2020-03-20 01:57:02
○ 2026-02-22 13:19:32
●A35.214.120.832026-02-15 → 2026-02-22 · 3 obs
● 2026-02-15 10:44:14
● 2026-02-22 13:19:32
○A77.104.173.1572020-03-20 → 2020-03-20 · 4 obs
● 2020-03-20 01:57:02
○ 2026-02-15 10:44:14
○ 2026-02-22 13:19:32
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| instructus.org | ns56.domaincontrol.com, ns55.domaincontrol.com | - |
✅ Authoritative Response
Server: 173.201.75.28
NS records: ns56.domaincontrol.com, ns55.domaincontrol.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for instructus.org (unsigned zone)
⏱️ Timing
Total: 50ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 35.214.120.83 |
| NS | 2 | ns55.domaincontrol.com, ns56.domaincontrol.com |
| MX | 2 | mx2.pcs-systems.com (pri: 10), mx1.pcs-systems.com (pri: 10) |
| TXT | 2 | v=spf1 a mx ip4:64.78.151.128/26 ip4:216, google-site-verification=Bs54i2ZUMqd7VQ9 |
| SOA | 1 | ns55.domaincontrol.com dns.jomax.net |
AI analysis
instructus.org is a parent of mail.instructus.org, www.instructus.org and elearning.instructus.org.
instructus.org points to IP number: 35.214.120.83.
Other host names such as rcsa.org.uk, 83.120.214.35.bc.googleusercontent.com, bluesquare-es.com, mail.instructus.org and blocksure.com share IPs with instructus.org.
instructus.org is delegated to two name servers: ns55.domaincontrol.com and ns56.domaincontrol.com.
instructus.org shares the same name server setup as michaelhcox.net, vascabianca.com, berkshiretoys.net, prosperity.mobi and malletdesignbuild.com.
Host names with two IP numbers: ns55.domaincontrol.com points to: 2603:5:21b2::1c and 97.74.107.28; ns56.domaincontrol.com points to: 2603:5:22b2::1c and 173.201.75.28.
instructus.org is handled by two mail servers: mx1.pcs-systems.com and mx2.pcs-systems.com.
The mail server setup for instructus.org matches that of other domains, for instance 3sltd.co.uk, pcs-systems.co.uk, theappropriateadultservice.org.uk, bheta.co.uk and spearmark.co.uk.
instructus.org shares mail servers with other domains, for instance i-gateway.co.uk and magrath.sg.
Host names with a single IP:
mx1.pcs-systems.com points to 35.178.20.19.
mx2.pcs-systems.com points to 35.177.209.36.