`mathematicalmodels.com`

DNSSEC	⚠️ Not signed
A	207.148.248.143^{🇺🇸 EIG-29873207.148.248.0/24}
		PTR	`ip-207-148-248-143.defastlink.net`
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=1771291435

Same first word

mathematicalmodels.com

DNS History

8 records (3 active, 5 former)

●NSns.buydomains.com2008-03-19 → 2026-03-23 · 4 obs

● 2008-03-19 00:36:58
○ 2015-06-18 07:14:22
● 2015-10-30 23:39:44
● 2026-03-23 01:13:58

●NSthis-domain-for-sale.com2008-03-19 → 2026-03-23 · 5 obs

● 2008-03-19 00:36:58
○ 2015-06-18 07:14:22
○ 2017-12-20 05:15:04
● 2026-03-04 10:30:04
● 2026-03-23 01:13:58

○MXdev.null2008-03-19 → 2008-03-19 · 3 obs

● 2008-03-19 00:36:58
○ 2015-06-18 07:14:22
○ 2026-03-23 01:13:58

○A141.8.225.1242016-01-23 → 2016-04-25 · 5 obs

○ 2015-10-30 23:39:44
● 2016-01-23 09:50:30
● 2016-04-25 21:20:46
○ 2016-12-31 14:49:36
○ 2026-03-23 01:13:58

●A207.148.248.1432016-12-31 → 2026-03-23 · 3 obs

○ 2016-04-25 21:20:46
● 2016-12-31 14:49:36
● 2026-03-23 01:13:58

○A208.254.26.1322008-03-19 → 2008-03-19 · 3 obs

● 2008-03-19 00:36:58
○ 2015-06-18 07:14:22
○ 2026-03-23 01:13:58

○A50.63.202.1042015-10-30 → 2015-10-30 · 4 obs

○ 2015-06-18 07:14:22
● 2015-10-30 23:39:44
○ 2016-01-23 09:50:30
○ 2026-03-23 01:13:58

○A66.151.181.492015-06-18 → 2015-06-18 · 4 obs

○ 2008-03-19 00:36:58
● 2015-06-18 07:14:22
○ 2015-10-30 23:39:44
○ 2026-03-23 01:13:58

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
mathematicalmodels.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 mathematicalmodels.com (unsigned zone)

⏱️ Timing

Total: 128ms | 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

mathematicalmodels.com points to an IP address: 207.148.248.143.

other host names include www.mainstreetartists.com, cssgp.com, alanburton.com, pcfeatures.com and makemore.net; they share IP numbers with mathematicalmodels.com.

Name Servers

Two name servers this-domain-for-sale.com and ns.buydomains.com handle the delegation for mathematicalmodels.com.

mathematicalmodels.com shares the same name server setup as other domains, for instance togetherweachieve.com, navlion.com, legitimatepower.com, insidestandard.com and systemarchitectures.com.

mathematicalmodels.com at least partially shares name servers with other domains, such as tourhacks.com, campgroundsusa.com and thevirtualdesktop.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 that point to 52.20.26.87: this-domain-for-sale.com and ns.buydomains.com

mathematicalmodels.com - robtex.com