`calculusmaths.com`

DNSSEC	⚠️ Not signed
A	54.144.38.219^{🇺🇸 Amazon54.144.0.0/14 EC2 IAD NAT prefix}
		PTR	`ec2-54-144-38-219.compute-1.amazonaws.com`
NS	`a.misconfigured.dns.server.invalid` ⭐
NS	`ndns1.cosmotown.com`
		A	184.72.57.6^{🇺🇸 Amazon184.72.0.0/18 SFO prefix}
			PTR	`ec2-184-72-57-6.us-west-1.compute.amazonaws.com`
NS	`ndns2.cosmotown.com`
		A	54.177.47.228^{🇺🇸 Amazon54.176.0.0/15 EC2 SFO prefix}
			PTR	`ec2-54-177-47-228.us-west-1.compute.amazonaws.com`
SOA	`a.misconfigured.dns.server.invalid`hostmaster@calculusmaths.com 2026-02-21 #2

`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=1774819837

⚠️ On DNS blocklist: tif

Same first word

calculusmaths.com

DNS History

8 records (4 active, 4 former)

●NSa.misconfigured.dns.server.invalid2026-03-20 → 2026-03-29 · 3 obs

○ 2017-05-10 14:15:00
● 2026-03-20 03:20:08
● 2026-03-29 21:47:42

●NSndns1.cosmotown.com2026-03-20 → 2026-03-29 · 3 obs

○ 2017-05-10 14:15:00
● 2026-03-20 03:20:08
● 2026-03-29 21:47:42

●NSndns2.cosmotown.com2026-03-20 → 2026-03-29 · 3 obs

○ 2017-05-10 14:15:00
● 2026-03-20 03:20:08
● 2026-03-29 21:47:42

○NSns45.domaincontrol.com2017-05-10 → 2017-05-10 · 3 obs

● 2017-05-10 14:15:00
○ 2026-03-20 03:20:08
○ 2026-03-29 21:47:42

○NSns46.domaincontrol.com2017-05-10 → 2017-05-10 · 3 obs

● 2017-05-10 14:15:00
○ 2026-03-20 03:20:08
○ 2026-03-29 21:47:42

○MXcalculusmaths-com.mail.protection.outlook.com2017-05-10 → 2017-05-10 · 3 obs

● 2017-05-10 14:15:00
○ 2026-03-20 03:20:08
○ 2026-03-29 21:47:42

○A184.168.221.362017-05-10 → 2017-05-10 · 3 obs

● 2017-05-10 14:15:00
○ 2026-03-20 03:20:08
○ 2026-03-29 21:47:42

●A54.144.38.2192026-03-20 → 2026-03-29 · 3 obs

○ 2017-05-10 14:15:00
● 2026-03-20 03:20:08
● 2026-03-29 21:47:42

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
calculusmaths.com	ndns1.cosmotown.com, ndns2.cosmotown.com	2 records

✅ Authoritative Response

Server:54.177.47.228

NS records: ndns1.cosmotown.com, ndns2.cosmotown.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for calculusmaths.com (unsigned zone)

⏱️ Timing

Total: 236ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`54.144.38.219`
NS	2	`ndns2.cosmotown.com, ndns1.cosmotown.com`
SOA	1	`a.misconfigured.dns.server.invalid hostm`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ndns1.cosmotown.com, ndns2.cosmotown.com)

Analysis

IP Addresses

calculusmaths.com points to a single IP number: 54.144.38.219.

Other host names, for instance meansardine.net, sxwww.ifjewelry.com, silicanet.com, jiuquan.bookmarkjet.com and welovelivinghere.com share IP numbers with calculusmaths.com.

Name Servers

The domain calculusmaths.com is delegated to three name servers: ndns1.cosmotown.com, ndns2.cosmotown.com and a.misconfigured.dns.server.invalid.

calculusmaths.com shares name servers with other domains at least partially, for instance vinothvaratharajan.com, shoppertom.com, lasteaks.com, bronxup.com and palivere.ee.

these name servers are commonly used with ns1.domeeninimi.ee, ns2.domeeninimi.ee, ns1.vigbo.site, ns2.vigbo.site, ns1.cbsv.jp, ns2.cbsv.jp, ns1.cargo.site and ns2.cargo.site.

Host names with one IP number:

ndns1.cosmotown.com points to: 184.72.57.6.

ndns2.cosmotown.com points to: 54.177.47.228.

calculusmaths.com - robtex.com