expresscourse.com - dns.ninja
expresscourse.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=1783943437 | ||||||
Same first word
expresscourse.com |
Similar names
DNS History
7 records (4 active, 3 former)
○NSns.rackspace.com2015-07-15 → 2017-05-15 · 4 obs
● 2017-05-15 21:19:02
○ 2026-04-02 20:02:22
○ 2026-07-13 12:17:44
●NSns1.afternic.com2026-04-02 → 2026-07-13 · 3 obs
● 2026-04-02 20:02:22
● 2026-07-13 12:17:44
●NSns2.afternic.com2026-04-02 → 2026-07-13 · 3 obs
● 2026-04-02 20:02:22
● 2026-07-13 12:17:44
○NSns2.rackspace.com2015-07-15 → 2017-05-15 · 4 obs
● 2017-05-15 21:19:02
○ 2026-04-02 20:02:22
○ 2026-07-13 12:17:44
○MX.2026-04-02 → 2026-07-13 · 2 obs
○ 2026-07-13 12:17:44
●A13.248.169.482026-04-02 → 2026-07-13 · 2 obs
● 2026-07-13 12:17:44
●A76.223.54.1462026-04-02 → 2026-07-13 · 2 obs
● 2026-07-13 12:17:44
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| expresscourse.com | ns1.afternic.com, ns2.afternic.com | 4 records |
✅ Authoritative Response
Server:97.74.98.69
NS records: ns1.afternic.com, ns2.afternic.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for expresscourse.com (unsigned zone)
⏱️ Timing
Total: 123ms | 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 | ns1.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
expresscourse.com points to the IP addresses 13.248.169.48 and 76.223.54.146
Additional host names — www.blockchain.es, www.rf.la, fortmyersvacation.com and two others — share IP numbers with expresscourse.com.
Name Servers
expresscourse.com uses two name servers for its delegation: ns1.afternic.com and ns2.afternic.com.
expresscourse.com shares its name server setup with other domains, including medicomm.com, travelland.org, robbinsdiamonds.com and two others.
There is at least partial name server overlap between expresscourse.com and other domains — freejournal.net, seniorshomeloans.com.au, indianapartment.com and two more among them.
These name servers are routinely deployed together with the name servers verification-d3jclucsp89ganyqbydeny.ns101.verify.hn.
The two host names ns1.afternic.com and ns2.afternic.com each have a pair of IP addresses: ns1.afternic.com has 97.74.98.69 and 2603:5:2126::45, and ns2.afternic.com has 173.201.66.69 and 2603:5:2226::45.