courseflex.com - robtex.com
courseflex.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 | ns3.afternic.com ⭐ | ||||||
| A | 97.74.98.65🇺🇸 GODADDY-DNS97.74.98.0/23 | ||||||
| PTR | ns3.afternic.com | ||||||
| NS | ns4.afternic.com | ||||||
| A | 173.201.66.65🇺🇸 GODADDY-DNS173.201.66.0/23 | ||||||
| PTR | ns4.namefind.com | ||||||
| TXT | v=spf1 -all | ||||||
| SOA | ns3.afternic.comdns@jomax.net 2025-10-01 #0 | ||||||
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=1784605022 | ||||||
Previously MX for
courseflex.com |
Subdomains
mail.courseflex.com |
Same first word
courseflex.com |
Similar names
flexsource.ie |
sourceflex.com |
flexsource.us |
flexsource.ca |
frescoluxe.com |
flexsource.com |
ecoflexrus.com |
flexsource.info |
flexcourse.com |
flexsource.nl |
flexsource.wpmudev.host |
DNS History
22 records (4 active, 18 former)
○NSdns11.parkpage.foundationapi.com2020-03-08 → 2020-03-08 · 4 obs
● 2020-03-08 16:08:50
○ 2021-04-28 08:34:08
○ 2026-07-21 03:47:20
○NSdns12.parkpage.foundationapi.com2020-03-08 → 2020-03-08 · 4 obs
● 2020-03-08 16:08:50
○ 2021-04-28 08:34:08
○ 2026-07-21 03:47:20
○NSns1.bh-63.webhostbox.net2021-04-28 → 2021-04-28 · 4 obs
● 2021-04-28 08:34:08
○ 2026-03-04 05:00:22
○ 2026-07-21 03:47:20
○NSns1.bluehost.com2008-03-12 → 2016-01-17 · 6 obs
○ 2015-05-31 06:49:16
● 2015-10-21 17:30:02
● 2016-01-17 10:40:06
○ 2020-03-08 16:08:50
○ 2026-07-21 03:47:20
○NSns2.bh-63.webhostbox.net2021-04-28 → 2021-04-28 · 4 obs
● 2021-04-28 08:34:08
○ 2026-03-04 05:00:22
○ 2026-07-21 03:47:20
○NSns2.bluehost.com2008-03-12 → 2016-01-17 · 6 obs
○ 2015-05-31 06:49:16
● 2015-10-21 17:30:02
● 2016-01-17 10:40:06
○ 2020-03-08 16:08:50
○ 2026-07-21 03:47:20
●NSns3.afternic.com2026-03-04 → 2026-07-21 · 3 obs
● 2026-03-04 05:00:22
● 2026-07-21 03:47:20
●NSns4.afternic.com2026-03-04 → 2026-07-21 · 3 obs
● 2026-03-04 05:00:22
● 2026-07-21 03:47:20
○NSns47.domaincontrol.com2015-05-31 → 2015-05-31 · 4 obs
● 2015-05-31 06:49:16
○ 2015-10-21 17:30:02
○ 2026-07-21 03:47:20
○NSns48.domaincontrol.com2015-05-31 → 2015-05-31 · 4 obs
● 2015-05-31 06:49:16
○ 2015-10-21 17:30:02
○ 2026-07-21 03:47:20
○MXcourseflex.com2008-03-12 → 2021-04-28 · 6 obs
○ 2015-05-31 06:49:16
○ 2020-03-08 16:08:50
● 2021-04-28 08:34:08
○ 2026-03-04 05:00:22
○ 2026-07-21 03:47:20
○MXmail.courseflex.com2015-10-21 → 2016-01-17 · 5 obs
● 2015-10-21 17:30:02
● 2016-01-17 10:40:06
○ 2020-03-08 16:08:50
○ 2026-07-21 03:47:20
○MXmailstore1.secureserver.net2015-05-31 → 2015-05-31 · 4 obs
● 2015-05-31 06:49:16
○ 2015-10-21 17:30:02
○ 2026-07-21 03:47:20
○MXsmtp.secureserver.net2015-05-31 → 2015-05-31 · 4 obs
● 2015-05-31 06:49:16
○ 2015-10-21 17:30:02
○ 2026-07-21 03:47:20
●A13.248.169.482026-03-04 → 2026-07-21 · 3 obs
● 2026-03-04 05:00:22
● 2026-07-21 03:47:20
○A207.174.214.2062021-04-28 → 2021-04-28 · 4 obs
● 2021-04-28 08:34:08
○ 2026-03-04 05:00:22
○ 2026-07-21 03:47:20
○A209.99.40.2232020-03-08 → 2020-03-08 · 4 obs
● 2020-03-08 16:08:50
○ 2021-04-28 08:34:08
○ 2026-07-21 03:47:20
○A50.63.202.462015-05-31 → 2015-05-31 · 4 obs
● 2015-05-31 06:49:16
○ 2015-10-21 17:30:02
○ 2026-07-21 03:47:20
○A69.89.25.1592008-03-12 → 2008-03-12 · 3 obs
○ 2015-05-31 06:49:16
○ 2026-07-21 03:47:20
○A69.89.31.2292015-10-21 → 2016-01-17 · 5 obs
● 2015-10-21 17:30:02
● 2016-01-17 10:40:06
○ 2020-03-08 16:08:50
○ 2026-07-21 03:47:20
●A76.223.54.1462026-03-04 → 2026-07-21 · 3 obs
● 2026-03-04 05:00:22
● 2026-07-21 03:47:20
○PTRdns11.parkpage.foundationapi.com2020-03-08 → 2020-03-08 · 3 obs
○ 2021-04-28 08:34:08
○ 2026-07-21 03:47:20
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | c.gtld-servers.net, f.gtld-servers.net, g.gtld-servers.net, b.gtld-servers.net... | - |
| courseflex.com | ns3.afternic.com, ns4.afternic.com | 2 records |
✅ Authoritative Response
Server:97.74.98.65
NS records: ns3.afternic.com, ns4.afternic.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for courseflex.com (unsigned zone)
⏱️ Timing
Total: 1373ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 13.248.169.48, 76.223.54.146 |
| NS | 2 | ns3.afternic.com, ns4.afternic.com |
| MX | 1 | . (pri: 0) |
| TXT | 1 | v=spf1 -all |
| SOA | 1 | ns3.afternic.com dns.jomax.net |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns3.afternic.com, ns4.afternic.com)
Analysis
Hierarchy
mail.courseflex.com is a subdomain of courseflex.com.
IP Addresses
courseflex.com points to the IP addresses 13.248.169.48 and 76.223.54.146
Among the host names that share IP numbers with courseflex.com are bbsource.com, sh-net.com, siderosis.com and two others.
Name Servers
Two name servers handle the delegation for courseflex.com: ns3.afternic.com and ns4.afternic.com.
courseflex.com has the same name server delegation as a number of other domains, such as host-214-231-231-199.awesomedns.com, hateweight.org, lmvf.org and two more.
The name servers of courseflex.com overlap at least partially with those of other domains — among them sosmedical.org, forexstorm.com, ycre.org and two more.
These name servers commonly appear in combination with the name servers verification-frsgyqgb387khmr9jzuunx.ns101.verify.hn.
Both ns3.afternic.com and ns4.afternic.com have a single IP address each — ns3.afternic.com resolves to 97.74.98.65 while ns4.afternic.com resolves to 173.201.66.65.