firecourse.com - dns.ninja
firecourse.com
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns1.dyna-ns.net ⭐ | ||||||
| A | 2400:cb00:2049:1::a29f:1a5c🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street | ||||||
| A | 2400:cb00:2049:1::a29f:1b9e🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street | ||||||
| A | 162.159.26.92Cloudflare162.159.26.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ns1.dyna-ns.net | ||||||
| A | 162.159.27.158Cloudflare162.159.27.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ns1.dyna-ns.net | ||||||
| NS | ns2.dyna-ns.net | ||||||
| A | 2400:cb00:2049:1::a29f:1805🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street | ||||||
| A | 2400:cb00:2049:1::a29f:1905🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street | ||||||
| A | 162.159.24.5Cloudflare162.159.24.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ns2.dyna-ns.net | ||||||
| A | 162.159.25.5Cloudflare162.159.25.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ns2.dyna-ns.net | ||||||
| SOA | ns1.dyna-ns.nethostmaster@firecourse.com 2026-07-31 #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=1785541832 | ||||||
Previously MX for
firecourse.com |
Subdomains
mail.firecourse.com |
Same first word
firecourse.com |
Similar names
DNS History
18 records (2 active, 16 former)
○NSns1.bluehost.com2015-07-12 → 2016-09-12 · 4 obs
● 2016-09-12 01:05:38
○ 2017-04-02 14:17:28
○ 2026-08-01 00:13:54
●NSns1.dyna-ns.net2026-03-06 → 2026-08-01 · 3 obs
● 2026-03-06 12:43:16
● 2026-08-01 00:13:54
○NSns2.bluehost.com2015-07-12 → 2016-09-12 · 4 obs
● 2016-09-12 01:05:38
○ 2017-04-02 14:17:28
○ 2026-08-01 00:13:54
●NSns2.dyna-ns.net2026-03-06 → 2026-08-01 · 3 obs
● 2026-03-06 12:43:16
● 2026-08-01 00:13:54
○NSsk.s5.ans1.ns122.ztomy.com2017-04-02 → 2017-04-02 · 4 obs
● 2017-04-02 14:17:28
○ 2026-03-06 12:43:16
○ 2026-08-01 00:13:54
○NSsk.s5.ans2.ns122.ztomy.com2017-04-02 → 2017-04-02 · 4 obs
● 2017-04-02 14:17:28
○ 2026-03-06 12:43:16
○ 2026-08-01 00:13:54
○MXfallbackmx.spamexperts.eu2015-07-12 → 2016-03-25 · 4 obs
● 2016-03-25 23:59:12
○ 2016-09-12 01:05:38
○ 2026-08-01 00:13:54
○MXfirecourse.com2016-09-12 → 2026-04-08 · 7 obs
● 2016-09-12 01:05:38
○ 2017-04-02 14:17:28
○ 2026-04-02 13:48:30
● 2026-04-08 18:59:50
○ 2026-06-11 13:50:18
○ 2026-08-01 00:13:54
○MXlastmx.spamexperts.net2015-07-12 → 2016-03-25 · 4 obs
● 2016-03-25 23:59:12
○ 2016-09-12 01:05:38
○ 2026-08-01 00:13:54
○MXmail.firecourse.com2016-09-12 → 2016-09-12 · 4 obs
● 2016-09-12 01:05:38
○ 2017-04-02 14:17:28
○ 2026-08-01 00:13:54
○MXmx.spamexperts.com2015-07-12 → 2016-03-25 · 4 obs
● 2016-03-25 23:59:12
○ 2016-09-12 01:05:38
○ 2026-08-01 00:13:54
○A185.53.179.1282026-03-06 → 2026-04-02 · 5 obs
● 2026-03-06 12:43:16
● 2026-04-02 13:48:30
○ 2026-04-08 18:59:50
○ 2026-08-01 00:13:54
○A185.53.179.1462026-06-11 → 2026-06-11 · 3 obs
● 2026-06-11 13:50:18
○ 2026-08-01 00:13:54
○A208.91.197.442017-04-02 → 2017-04-02 · 4 obs
● 2017-04-02 14:17:28
○ 2026-03-06 12:43:16
○ 2026-08-01 00:13:54
○A34.195.60.1392026-03-06 → 2026-08-01 · 2 obs
○ 2026-08-01 00:13:54
○A51.222.56.422026-04-08 → 2026-04-08 · 4 obs
● 2026-04-08 18:59:50
○ 2026-06-11 13:50:18
○ 2026-08-01 00:13:54
○A69.89.31.872015-07-12 → 2016-09-12 · 4 obs
● 2016-09-12 01:05:38
○ 2017-04-02 14:17:28
○ 2026-08-01 00:13:54
○PTRsk.s5.ans1.ns122.ztomy.com2017-04-02 → 2017-04-02 · 3 obs
○ 2026-03-06 12:43:16
○ 2026-08-01 00:13:54
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | b.gtld-servers.net, m.gtld-servers.net, k.gtld-servers.net, a.gtld-servers.net... | - |
| firecourse.com | ns2.dyna-ns.net, ns1.dyna-ns.net | - |
✅ Authoritative Response
Server:162.159.26.92
NS records: ns2.dyna-ns.net, ns1.dyna-ns.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for firecourse.com (unsigned zone)
⏱️ Timing
Total: 639ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| SOA | 1 | ns1.dyna-ns.net hostmaster.firecourse.co |
Analysis
Hierarchy
firecourse.com serves as the parent of mail.firecourse.com.
Name Servers
firecourse.com has two authoritative name servers — ns1.dyna-ns.net and ns2.dyna-ns.net.
The name server configuration of firecourse.com is shared with other domains, for instance sunrooms.tv, introsteps.online, polaviz.com and two others.
The name servers for firecourse.com overlap at least partially with those of other domains — for example grainanalyzer.com.
The hosts ns1.dyna-ns.net and ns2.dyna-ns.net each resolve to four IP numbers: ns1.dyna-ns.net directs to 162.159.26.92, 162.159.27.158, 2400:cb00:2049:1::a29f:1a5c and 2400:cb00:2049:1::a29f:1b9e, and ns2.dyna-ns.net directs to 162.159.24.5, 162.159.25.5, 2400:cb00:2049:1::a29f:1805 and 2400:cb00:2049:1::a29f:1905.