courseteachers.com - robtex.com
courseteachers.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 | ns2.afternic.com ⭐ | ||||||
| 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 | ||||||
| NS | ns1.afternic.com | ||||||
| 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 | ||||||
| TXT | v=spf1 -all | ||||||
| SOA | ns2.afternic.comdns@jomax.net serial=1 | ||||||
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 | ||||||
Subdomains
mail.courseteachers.com |
Same first word
courseteachers.com |
Similar names
DNS History
15 records (4 active, 11 former)
●NSns1.afternic.com2026-03-22 → 2026-03-22 · 2 obs
● 2026-03-22 17:24:06
○NSns1.dsredirection.com2015-07-12 → 2016-04-30 · 4 obs
● 2016-04-30 20:13:42
○ 2017-03-21 12:41:50
○ 2026-03-22 17:24:06
○NSns1.webhostingva.com2017-03-21 → 2017-03-21 · 3 obs
● 2017-03-21 12:41:50
○ 2026-03-22 17:24:06
●NSns2.afternic.com2026-03-22 → 2026-03-22 · 2 obs
● 2026-03-22 17:24:06
○NSns2.dsredirection.com2015-07-12 → 2016-04-30 · 4 obs
● 2016-04-30 20:13:42
○ 2017-03-21 12:41:50
○ 2026-03-22 17:24:06
○NSns2.webhostingva.com2017-03-21 → 2017-03-21 · 3 obs
● 2017-03-21 12:41:50
○ 2026-03-22 17:24:06
○MX.2026-03-22 → 2026-03-22 · 1 obs
○MXmail.courseteachers.com2017-03-21 → 2017-03-21 · 2 obs
○ 2026-03-22 17:24:06
●A13.248.169.482026-03-22 → 2026-03-22 · 2 obs
● 2026-03-22 17:24:06
○A208.73.210.2002015-07-12 → 2016-04-30 · 4 obs
● 2016-04-30 20:13:42
○ 2017-03-21 12:41:50
○ 2026-03-22 17:24:06
○A208.73.210.2142015-07-12 → 2016-04-30 · 4 obs
● 2016-04-30 20:13:42
○ 2017-03-21 12:41:50
○ 2026-03-22 17:24:06
○A208.73.210.2172015-07-12 → 2016-04-30 · 4 obs
● 2016-04-30 20:13:42
○ 2017-03-21 12:41:50
○ 2026-03-22 17:24:06
○A208.73.211.1782015-07-12 → 2016-04-30 · 4 obs
● 2016-04-30 20:13:42
○ 2017-03-21 12:41:50
○ 2026-03-22 17:24:06
○A216.27.29.362017-03-21 → 2017-03-21 · 3 obs
● 2017-03-21 12:41:50
○ 2026-03-22 17:24:06
●A76.223.54.1462026-03-22 → 2026-03-22 · 2 obs
● 2026-03-22 17:24:06
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net... | - |
| courseteachers.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 courseteachers.com (unsigned zone)
⏱️ Timing
Total: 242ms | 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
Hierarchy
courseteachers.com is the parent of mail.courseteachers.com.
IP Addresses
courseteachers.com resolves to two IP numbers: 13.248.169.48 and 76.223.54.146.
Other host names, for instance asia-red.www.gigsworks.com, prometeus.co, obgynphysician.com, intervention.us and ns2.theblueodyssey.com share IP numbers with courseteachers.com.
Name Servers
courseteachers.com has two name servers: ns1.afternic.com and ns2.afternic.com.
courseteachers.com shares the same name server setup as other domains, for example converge.pro, iboti.info, d215.dooki.com, i216-58-113-96.cybersurf.com and mmabets.com.
courseteachers.com shares some name servers with other domains, for example greg.la, andyteam.com, sennue.com, sagecontainers.com and sunbeltadvisors.com.
These name servers are commonly used together with verification-d3jclucsp89ganyqbydeny.ns101.verify.hn and verification-xhw8x3pckzak64rpjjhxxw.ns101.verify.hn.
Host names with two IP numbers:
ns1.afternic.com points to: 2603:5:2126::45 and 97.74.98.69; ns2.afternic.com points to: 2603:5:2226::45 and 173.201.66.69.