hostmaster.managementcourse.com - robtex.com
hostmaster.managementcourse.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 13.248.169.48🇺🇸 Amazon13.248.160.0/20 | ||||||
| PTR | a904c694c05102f30.awsglobalaccelerator.com | ||||||
| A | 76.223.54.146🇺🇸 Amazon76.223.48.0/20 | ||||||
| NS | ns1.afternic.com ⭐ ⚠️ Not in parent delegation | ||||||
| A | 2603:5:2126::45🇺🇸 GODADDY-DNS2603:5:2120::/44 | ||||||
| PTR | ns1.afternic.com | ||||||
| A | 97.74.98.69🇺🇸 GODADDY-DNS97.74.98.0/23 | ||||||
| PTR | ns1.afternic.com | ||||||
| NS | ns2.afternic.com ⚠️ Not in parent delegation | ||||||
| A | 2603:5:2226::45🇺🇸 GODADDY-DNS2603:5:2220::/44 | ||||||
| PTR | ns2.afternic.com | ||||||
| A | 173.201.66.69🇺🇸 GODADDY-DNS173.201.66.0/23 | ||||||
| PTR | ns2.afternic.com | ||||||
| TXT | v=spf1 -all | ||||||
| SOA | ns1.afternic.comdns@jomax.net serial=1 | ||||||
managementcourse.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 13.248.169.48🇺🇸 Amazon13.248.160.0/20 | ||||||
| A | 76.223.54.146🇺🇸 Amazon76.223.48.0/20 | ||||||
| NS | ns2.afternic.com ⭐ | ||||||
| NS | ns1.afternic.com | ||||||
| TXT | v=spf1 -all | ||||||
| SOA | ns2.afternic.comdns@jomax.net serial=1 | ||||||
Same first word
Similar names
DNS History
4 records (4 active, 0 former)
●NSns1.afternic.com2026-03-15 → 2026-04-21 · 2 obs
● 2026-04-21 19:51:06
●NSns2.afternic.com2026-03-15 → 2026-04-21 · 2 obs
● 2026-04-21 19:51:06
●A13.248.169.482026-03-15 → 2026-04-21 · 2 obs
● 2026-04-21 19:51:06
●A76.223.54.1462026-03-15 → 2026-04-21 · 2 obs
● 2026-04-21 19:51:06
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| managementcourse.com | ns1.afternic.com, ns2.afternic.com | 4 records |
✅ Authoritative Response
Server:173.201.66.69
NS records: ns1.afternic.com, ns2.afternic.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for managementcourse.com (unsigned zone)
⏱️ Timing
Total: 170ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 76.223.54.146, 13.248.169.48 |
| NS | 2 | ns1.afternic.com, ns2.afternic.com |
| MX | 1 | . (pri: 0) |
| TXT | 1 | v=spf1 -all |
| SOA | 1 | ns2.afternic.com dns.jomax.net |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns1.afternic.com, ns1.afternic.com, ns2.afternic.com...)
Analysis
IP Addresses
hostmaster.managementcourse.com points to two IP numbers: 13.248.169.48 and 76.223.54.146.
Other host names, for instance mobiletext.com, petw.net, vibediet.com, zethero.com and partnersforhealth.org share IP numbers with hostmaster.managementcourse.com.
Name Servers
hostmaster.managementcourse.com is delegated to two name servers: ns1.afternic.com and ns2.afternic.com.
hostmaster.managementcourse.com uses the same name server setup as other domains, for instance hubitron.com, cbe21sc.ratebond.com, agoservice.com, mx1.mxrmedia.com and se-mlm-sparven-a1.dataphone.net.
hostmaster.managementcourse.com shares name servers with other domains at least partially, for instance threatcase.com, hxra.com, ladistillerie.com, movioz.com and professionalslab.com.
these name servers are often used together with the name servers verification-bkfsajua6pqtybgpmrkbbp.ns101.verify.hn.
Host names with two IP numbers:
The host ns1.afternic.com points to 2603:5:2126::45 and 97.74.98.69.
The host ns2.afternic.com points to 2603:5:2226::45 and 173.201.66.69.