firecourse.com - dns.ninja

firecourse.com

DNSSEC⚠️ Not signed
NSns1.dyna-ns.net ⭐
A2400:cb00:2049:1::a29f:1a5c🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street
A2400:cb00:2049:1::a29f:1b9e🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street
A162.159.26.92Cloudflare162.159.26.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRns1.dyna-ns.net
A162.159.27.158Cloudflare162.159.27.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRns1.dyna-ns.net
NSns2.dyna-ns.net
A2400:cb00:2049:1::a29f:1805🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street
A2400:cb00:2049:1::a29f:1905🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street
A162.159.24.5Cloudflare162.159.24.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRns2.dyna-ns.net
A162.159.25.5Cloudflare162.159.25.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRns2.dyna-ns.net
SOAns1.dyna-ns.nethostmaster@firecourse.com 2026-07-31 #1

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1785541832

Previously MX for

firecourse.com

Subdomains

mail.firecourse.com

Same first word

firecourse.com

Similar names

sourcefire.org
resourcefi.com
sourcefire.us
sourcefire.es
firesource.org
coursefire.com
ifresource.com
sourcefire.com
friosecure.com
sourcefire.de
sourcefire.co
firesource.com
firesource.media
firesource.de
sourcefire.com.br
surefireco.com
sourcefire.net
sourcefire.fr

DNS History

18 records (2 active, 16 former)

20162017201820192020202120222023202420252026NSns1.dyna-ns.netns2.dyna-ns.netns1.bluehost.comns2.bluehost.comsk.s5.ans1.ns122.ztomy.comsk.s5.ans2.ns122.ztomy.comMXfallbackmx.spamexperts.eufirecourse.comlastmx.spamexperts.netmail.firecourse.commx.spamexperts.comA185.53.179.128185.53.179.146208.91.197.4434.195.60.13951.222.56.4269.89.31.87PTRsk.s5.ans1.ns122.ztomy.com
○NSns1.bluehost.com2015-07-12 → 2016-09-12 · 4 obs
● 2015-07-12 18:15:50
● 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
○ 2017-04-02 14:17:28
● 2026-03-06 12:43:16
● 2026-08-01 00:13:54
○NSns2.bluehost.com2015-07-12 → 2016-09-12 · 4 obs
● 2015-07-12 18:15:50
● 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
○ 2017-04-02 14:17:28
● 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
○ 2016-09-12 01:05:38
● 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
○ 2016-09-12 01:05:38
● 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
● 2015-07-12 18:15:50
● 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
○ 2016-03-25 23:59:12
● 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
● 2015-07-12 18:15:50
● 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
○ 2016-03-25 23:59:12
● 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
● 2015-07-12 18:15:50
● 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
○ 2017-04-02 14:17:28
● 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
○ 2026-04-08 18:59:50
● 2026-06-11 13:50:18
○ 2026-08-01 00:13:54
○A208.91.197.442017-04-02 → 2017-04-02 · 4 obs
○ 2016-09-12 01:05:38
● 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
○ 2026-03-06 12:43:16
○ 2026-08-01 00:13:54
○A51.222.56.422026-04-08 → 2026-04-08 · 4 obs
○ 2026-04-02 13:48:30
● 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
● 2015-07-12 18:15:50
● 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
● 2017-04-02 14:17:28
○ 2026-03-06 12:43:16
○ 2026-08-01 00:13:54

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comb.gtld-servers.net, m.gtld-servers.net, k.gtld-servers.net, a.gtld-servers.net...-
firecourse.comns2.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

TypeCountSample Data
SOA1ns1.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.