extracourse.com - dns.ninja

`extracourse.com`

DNSSEC	⚠️ Not signed
A	139.59.24.217^{🇮🇳 DIGITALOCEAN139.59.16.0/20 DigitalOcean}
NS	`ns11.domaincontrol.com` ⭐
		A	2603:5:2190::6^{🇺🇸 GODADDY-DNS2603:5:2190::/44}
			PTR	`ns11.domaincontrol.com`
		A	97.74.105.6^{🇺🇸 GODADDY-DNS97.74.104.0/23}
			PTR	`ns11.domaincontrol.com`
NS	`ns12.domaincontrol.com`
		A	2603:5:2290::6^{🇺🇸 GODADDY-DNS2603:5:2290::/44}
			PTR	`ns12.domaincontrol.com`
		A	173.201.73.6^{🇺🇸 GODADDY-DNS173.201.72.0/23}
			PTR	`ns12.domaincontrol.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c23::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`yuiadrs-in-f27.1e100.net`
		A	172.253.63.26^{🇺🇸 Google172.253.63.0/24}
			PTR	`bi-in-f26.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1b^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.26^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1b^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f27.1e100.net`
		A	172.253.116.27^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f27.1e100.net`
MX	`alt3.aspmx.l.googlemail.com`⁽¹⁰⁾
MX	`alt4.aspmx.l.googlemail.com`⁽¹⁰⁾
SOA	`ns11.domaincontrol.com`dns@jomax.net 2025-11-21 #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.net`nstld@verisign-grs.com serial=1782382300

Previously MX for

extracourse.com

Subdomains

www.extracourse.com

Same first word

extracourse.com

Similar names

taxresource.net

extrasource.myshopify.com

extrasource.com

taxrecourse.com

resourcetax.com

taxresource.co.uk

taxresource.ca

taxresource.com

DNS History

20 records (8 active, 12 former)

○NSns1.md-in-16.webhostbox.net2016-03-26 → 2016-08-11 · 5 obs

○ 2016-01-01 00:56:16
● 2016-03-26 14:34:18
● 2016-08-11 03:04:48
○ 2017-04-20 22:16:32
○ 2026-06-25 10:36:18

○NSns1.winspectsolutions.com2015-05-25 → 2016-01-01 · 4 obs

● 2015-05-25 22:28:28
● 2016-01-01 00:56:16
○ 2016-03-26 14:34:18
○ 2026-06-25 10:36:18

●NSns11.domaincontrol.com2026-03-30 → 2026-06-25 · 3 obs

○ 2017-04-20 22:16:32
● 2026-03-30 08:19:22
● 2026-06-25 10:36:18

●NSns12.domaincontrol.com2026-03-30 → 2026-06-25 · 3 obs

○ 2017-04-20 22:16:32
● 2026-03-30 08:19:22
● 2026-06-25 10:36:18

○NSns2.md-in-16.webhostbox.net2016-03-26 → 2016-08-11 · 5 obs

○ 2016-01-01 00:56:16
● 2016-03-26 14:34:18
● 2016-08-11 03:04:48
○ 2017-04-20 22:16:32
○ 2026-06-25 10:36:18

○NSns2.winspectsolutions.com2015-05-25 → 2016-01-01 · 4 obs

● 2015-05-25 22:28:28
● 2016-01-01 00:56:16
○ 2016-03-26 14:34:18
○ 2026-06-25 10:36:18

○NSns67.domaincontrol.com2017-04-20 → 2017-04-20 · 4 obs

○ 2016-08-11 03:04:48
● 2017-04-20 22:16:32
○ 2026-03-30 08:19:22
○ 2026-06-25 10:36:18

○NSns68.domaincontrol.com2017-04-20 → 2017-04-20 · 4 obs

○ 2016-08-11 03:04:48
● 2017-04-20 22:16:32
○ 2026-03-30 08:19:22
○ 2026-06-25 10:36:18

●MXalt1.aspmx.l.google.com2026-03-30 → 2026-06-25 · 3 obs

○ 2017-04-20 22:16:32
● 2026-03-30 08:19:22
● 2026-06-25 10:36:18

●MXalt2.aspmx.l.google.com2026-03-30 → 2026-06-25 · 3 obs

○ 2017-04-20 22:16:32
● 2026-03-30 08:19:22
● 2026-06-25 10:36:18

●MXalt3.aspmx.l.googlemail.com2026-03-30 → 2026-06-25 · 3 obs

○ 2017-04-20 22:16:32
● 2026-03-30 08:19:22
● 2026-06-25 10:36:18

●MXalt4.aspmx.l.googlemail.com2026-03-30 → 2026-06-25 · 3 obs

○ 2017-04-20 22:16:32
● 2026-03-30 08:19:22
● 2026-06-25 10:36:18

●MXaspmx.l.google.com2026-03-30 → 2026-06-25 · 3 obs

○ 2017-04-20 22:16:32
● 2026-03-30 08:19:22
● 2026-06-25 10:36:18

○MXextracourse.com2016-03-26 → 2016-08-11 · 5 obs

○ 2016-01-01 00:56:16
● 2016-03-26 14:34:18
● 2016-08-11 03:04:48
○ 2017-04-20 22:16:32
○ 2026-06-25 10:36:18

○MXmailstore1.secureserver.net2015-05-25 → 2017-04-20 · 7 obs

● 2015-05-25 22:28:28
● 2016-01-01 00:56:16
○ 2016-03-26 14:34:18
○ 2016-08-11 03:04:48
● 2017-04-20 22:16:32
○ 2026-03-30 08:19:22
○ 2026-06-25 10:36:18

○MXsmtp.secureserver.net2017-04-20 → 2017-04-20 · 4 obs

○ 2016-08-11 03:04:48
● 2017-04-20 22:16:32
○ 2026-03-30 08:19:22
○ 2026-06-25 10:36:18

○A103.21.59.242016-03-26 → 2016-08-11 · 5 obs

○ 2016-01-01 00:56:16
● 2016-03-26 14:34:18
● 2016-08-11 03:04:48
○ 2017-04-20 22:16:32
○ 2026-06-25 10:36:18

○A138.197.35.682017-04-20 → 2017-04-20 · 4 obs

○ 2016-08-11 03:04:48
● 2017-04-20 22:16:32
○ 2026-03-30 08:19:22
○ 2026-06-25 10:36:18

●A139.59.24.2172026-03-30 → 2026-06-25 · 3 obs

○ 2017-04-20 22:16:32
● 2026-03-30 08:19:22
● 2026-06-25 10:36:18

○A192.185.140.2062015-05-25 → 2016-01-01 · 4 obs

● 2015-05-25 22:28:28
● 2016-01-01 00:56:16
○ 2016-03-26 14:34:18
○ 2026-06-25 10:36:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
extracourse.com	ns11.domaincontrol.com, ns12.domaincontrol.com	4 records

✅ Authoritative Response

Server:97.74.105.6

NS records: ns11.domaincontrol.com, ns12.domaincontrol.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for extracourse.com (unsigned zone)

⏱️ Timing

Total: 162ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`139.59.24.217`
NS	2	`ns11.domaincontrol.com, ns12.domaincontrol.com`
MX	5	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.googlemail.com (pri: 10)...`
SOA	1	`ns11.domaincontrol.com dns.jomax.net`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns11.domaincontrol.com, ns11.domaincontrol.com, ns12.domaincontrol.com...)

Analysis

Hierarchy

www.extracourse.com is delegated beneath extracourse.com.

IP Addresses

extracourse.com resolves to one IP address: 139.59.24.217.

kameleonsalon.com, scienstechnologies.in, oakstone-partners.com and two other host names share IP numbers with extracourse.com.

Name Servers

extracourse.com is served by two delegated name servers, ns11.domaincontrol.com and ns12.domaincontrol.com.

extracourse.com uses the same name servers as several other domains — among them tampabaycrc.com, new-jersey-inmate-search.com, bttrades.com and two more.

Each of the two host names carries two IP addresses: ns11.domaincontrol.com points to 97.74.105.6 and 2603:5:2190::6, and ns12.domaincontrol.com points to 173.201.73.6 and 2603:5:2290::6.

Mail Servers

extracourse.com has five mail servers, which are aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

extracourse.com has at least partial mail server overlap with other domains such as ns500742.ns500754.ns500754.ns500754.ns500731.ns500731.ns500705.ns500678.ns500688.ns500649.ns500649.lustychickser.com, ns500759.ns500759.ns500759.ns500698.ns500758.ns500735.ns500736.ns500735.ns500698.ns500735.ns500708.ns500698.ns500708.ns500652.trackreceptor.com, ns500698.ns500698.ns500698.ns500758.ns500698.ns500698.ns500736.ns500698.ns500708.ns500576.ns500708.ns500708.ns500576.ns500619.ns500652.ns500619.trackreceptor.com and two more.

These mail servers commonly co-occur with mail servers alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, alt4.aspmx.l.googlemail.com and 3 others.

aspmx.l.google.com resolves to 172.253.63.26 and 2607:f8b0:4004:c23::1b. alt1.aspmx.l.google.com resolves to 108.177.123.26 and 2800:3f0:4003:c0f::1b. alt2.aspmx.l.google.com resolves to 172.253.116.27 and 2a00:1450:400b:c02::1b. All three hostnames point to two IP numbers each.