fcourse.com - robtex.com
fcourse.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 ⭐ | ||||||
| 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 | ||||||
| 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 | ||||||
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 | ||||||
Same first word
fcourse.com |
Similar names
DNS History
11 records (4 active, 7 former)
○NShostmaster.dnsenable.com2016-11-26 → 2017-07-03 · 5 obs
● 2016-11-26 07:49:30
● 2017-07-03 08:10:44
○ 2026-03-23 17:33:04
○ 2026-03-24 09:21:08
●NSns1.afternic.com2026-03-23 → 2026-03-24 · 3 obs
● 2026-03-23 17:33:04
● 2026-03-24 09:21:08
○NSns1.dopa.com2008-03-16 → 2008-03-16 · 3 obs
○ 2015-08-19 02:35:38
○ 2026-03-24 09:21:08
●NSns2.afternic.com2026-03-23 → 2026-03-24 · 3 obs
● 2026-03-23 17:33:04
● 2026-03-24 09:21:08
○NSns2.dopa.com2008-03-16 → 2008-03-16 · 3 obs
○ 2015-08-19 02:35:38
○ 2026-03-24 09:21:08
○NSns3.dopa.com2008-03-16 → 2008-03-16 · 3 obs
○ 2015-08-19 02:35:38
○ 2026-03-24 09:21:08
○NSns4.dopa.com2008-03-16 → 2008-03-16 · 3 obs
○ 2015-08-19 02:35:38
○ 2026-03-24 09:21:08
●A13.248.169.482026-03-23 → 2026-03-24 · 3 obs
● 2026-03-23 17:33:04
● 2026-03-24 09:21:08
○A52.164.241.1102016-11-26 → 2017-07-03 · 5 obs
● 2016-11-26 07:49:30
● 2017-07-03 08:10:44
○ 2026-03-23 17:33:04
○ 2026-03-24 09:21:08
○A61.151.253.882008-03-16 → 2008-03-16 · 3 obs
○ 2015-08-19 02:35:38
○ 2026-03-24 09:21:08
●A76.223.54.1462026-03-23 → 2026-03-24 · 3 obs
● 2026-03-23 17:33:04
● 2026-03-24 09:21:08
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| fcourse.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 fcourse.com (unsigned zone)
⏱️ Timing
Total: 394ms | 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
fcourse.com resolves to two IP numbers: 13.248.169.48 and 76.223.54.146.
other host names including 68089.cencei.com, mail.kingzway.com, fnasor.com, ufgf.com and mudur.com share IP numbers with fcourse.com.
Name Servers
fcourse.com is delegated to two name servers ns1.afternic.com and ns2.afternic.com.
fcourse.com shares the same name server setup as other domains, for instance www.killhost.com, jmnv.com, extiva.com, hochzeitstage.com and haity.com.
fcourse.com at least partially shares name servers with other domains, for instance synergies.co.uk, secureco.org, nioc.org, cruisedealers.com and cumforfree.com.
these name servers are commonly used alongside verification-d3jclucsp89ganyqbydeny.ns101.verify.hn.
Host names with two IP numbers:
The host name ns1.afternic.com points to 2603:5:2126::45 and 97.74.98.69; the host name ns2.afternic.com points to 2603:5:2226::45 and 173.201.66.69.