`conceptdefinition.com`

DNSSEC	⚠️ Not signed
A	207.148.248.143^{🇺🇸 EIG-29873207.148.248.0/24}
NS	`ns.buydomains.com` ⚠️ Not in zone NS records
		A	52.20.26.87^{🇺🇸 Amazon52.20.0.0/14 EC2 IAD prefix}
			PTR	`ec2-52-20-26-87.compute-1.amazonaws.com`
NS	`this-domain-for-sale.com` ⚠️ Not in zone NS records
		A	52.20.26.87^{🇺🇸 Amazon52.20.0.0/14 EC2 IAD prefix}
			PTR	`ec2-52-20-26-87.compute-1.amazonaws.com`

`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=1774418422

Same first word

conceptdefinition.com

DNS History

11 records (3 active, 8 former)

●NSns.buydomains.com2026-02-16 → 2026-03-25 · 3 obs

○ 2017-05-31 23:57:56
● 2026-02-16 11:28:18
● 2026-03-25 06:03:58

○NSns1.m69.siteground.biz2015-12-21 → 2017-05-31 · 4 obs

● 2015-12-21 02:27:12
● 2017-05-31 23:57:56
○ 2026-02-16 11:28:18
○ 2026-03-25 06:03:58

○NSns2.m69.siteground.biz2015-12-21 → 2017-05-31 · 4 obs

● 2015-12-21 02:27:12
● 2017-05-31 23:57:56
○ 2026-02-16 11:28:18
○ 2026-03-25 06:03:58

●NSthis-domain-for-sale.com2026-02-16 → 2026-03-25 · 3 obs

○ 2017-05-31 23:57:56
● 2026-02-16 11:28:18
● 2026-03-25 06:03:58

○MXconceptdefinition-com.mail.protection.outlook.com2017-05-31 → 2026-02-16 · 5 obs

○ 2016-06-28 22:58:06
● 2017-05-31 23:57:56
● 2026-02-16 11:28:18
○ 2026-02-19 05:39:00
○ 2026-03-25 06:03:58

○MXmx10.mailspamprotection.com2015-12-21 → 2016-06-28 · 4 obs

● 2015-12-21 02:27:12
● 2016-06-28 22:58:06
○ 2017-05-31 23:57:56
○ 2026-03-25 06:03:58

○MXmx20.mailspamprotection.com2015-12-21 → 2016-06-28 · 4 obs

● 2015-12-21 02:27:12
● 2016-06-28 22:58:06
○ 2017-05-31 23:57:56
○ 2026-03-25 06:03:58

○MXmx30.mailspamprotection.com2015-12-21 → 2016-06-28 · 4 obs

● 2015-12-21 02:27:12
● 2016-06-28 22:58:06
○ 2017-05-31 23:57:56
○ 2026-03-25 06:03:58

●A207.148.248.1432026-02-16 → 2026-03-25 · 3 obs

○ 2017-05-31 23:57:56
● 2026-02-16 11:28:18
● 2026-03-25 06:03:58

○A37.60.240.412017-05-31 → 2017-05-31 · 4 obs

○ 2016-06-28 22:58:06
● 2017-05-31 23:57:56
○ 2026-02-16 11:28:18
○ 2026-03-25 06:03:58

○A37.60.244.1402015-12-21 → 2016-06-28 · 4 obs

● 2015-12-21 02:27:12
● 2016-06-28 22:58:06
○ 2017-05-31 23:57:56
○ 2026-03-25 06:03:58

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
conceptdefinition.com	ns.buydomains.com, this-domain-for-sale.com	2 records

✅ Authoritative Response

Server:52.20.26.87

NS records: ns.buydomains.com, this-domain-for-sale.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for conceptdefinition.com (unsigned zone)

⏱️ Timing

Total: 182ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`207.148.248.143`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns.buydomains.com, this-domain-for-sale.com)

Analysis

IP Addresses

conceptdefinition.com resolves to one IP number: 207.148.248.143.

other host names including nullmx.uptownworld.com, mail.surfnetworking.com, bwgallery.com, pricelessbranding.com and slingsafe.com share IP numbers with conceptdefinition.com.

Name Servers

conceptdefinition.com is delegated to two name servers this-domain-for-sale.com and ns.buydomains.com.

conceptdefinition.com shares the same name server setup as other domains, for instance automotiveregistry.com, reliablecolour.com, safemediation.com, betteraircraft.com and stacaravans.com.

conceptdefinition.com at least partially shares name servers with other domains, for instance heroicbeings.com, tubios.com, frizant.com and enterprisecellular.com.

these name servers are commonly used alongside ns2.buydomains.com.

Host names with a single IP:

this-domain-for-sale.com points to 52.20.26.87.

ns.buydomains.com points to 52.20.26.87.

Host names pointing to 52.20.26.87: this-domain-for-sale.com and ns.buydomains.com.

conceptdefinition.com - robtex.com