`tomcalculation.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::ac43:c68d^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3031::6815:2234^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.34.52^{Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.198.141^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`aron.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a45^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`aron.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c045^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`aron.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2045^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`aron.ns.cloudflare.com`
		A	108.162.192.69^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`aron.ns.cloudflare.com`
		A	172.64.32.69^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`aron.ns.cloudflare.com`
		A	173.245.58.69^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`aron.ns.cloudflare.com`
NS	`coen.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c97^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`coen.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c397^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`coen.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2397^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`coen.ns.cloudflare.com`
		A	108.162.195.151^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`coen.ns.cloudflare.com`
		A	162.159.44.151^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`coen.ns.cloudflare.com`
		A	172.64.35.151^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`coen.ns.cloudflare.com`
MX	`tomcalculation-com.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:ca04::c^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db9pr02cu00204.inbound.protection.outlook.com`
		A	2a01:111:f403:ca04::e^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db8pr02cu00106.inbound.protection.outlook.com`
		A	2a01:111:f403:ca04::10^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-dbapr03cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::20^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-as8pr05cu00400.inbound.protection.outlook.com`
		A	52.101.68.36^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-db5pr02cu00104.inbound.protection.outlook.com`
		A	52.101.73.1^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am3pr04cu00501.inbound.protection.outlook.com`
		A	52.101.73.4^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am0pr83cu00404.inbound.protection.outlook.com`
		A	52.101.73.12^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am4pr0401cu00104.inbound.protection.outlook.com`
TXT	`MS=ms26517882`
TXT	`v=spf1 include:spf.protection.outlook.com -all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.34.52, 172.67.198.141
		IPv6	2606:4700:3030::ac43:c68d, 2606:4700:3031::6815:2234
SOA	`aron.ns.cloudflare.com`dns@cloudflare.com serial=2399255867

`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=1774464122

Same first word

tomcalculation.com

DNS History

17 records (7 active, 10 former)

●NSaron.ns.cloudflare.com2026-02-24 → 2026-03-25 · 3 obs

○ 2018-05-31 03:21:06
● 2026-02-24 20:43:28
● 2026-03-25 18:50:06

●NScoen.ns.cloudflare.com2026-02-24 → 2026-03-25 · 3 obs

○ 2018-05-31 03:21:06
● 2026-02-24 20:43:28
● 2026-03-25 18:50:06

○NSns.dinahosting.com2016-12-17 → 2018-05-31 · 4 obs

● 2016-12-17 02:57:32
● 2018-05-31 03:21:06
○ 2026-02-24 20:43:28
○ 2026-03-25 18:50:06

○NSns2.dinahosting.com2016-12-17 → 2018-05-31 · 4 obs

● 2016-12-17 02:57:32
● 2018-05-31 03:21:06
○ 2026-02-24 20:43:28
○ 2026-03-25 18:50:06

○NSns3.dinahosting.com2016-12-17 → 2018-05-31 · 4 obs

● 2016-12-17 02:57:32
● 2018-05-31 03:21:06
○ 2026-02-24 20:43:28
○ 2026-03-25 18:50:06

○NSns4.dinahosting.com2016-12-17 → 2018-05-31 · 4 obs

● 2016-12-17 02:57:32
● 2018-05-31 03:21:06
○ 2026-02-24 20:43:28
○ 2026-03-25 18:50:06

●MXtomcalculation-com.mail.protection.outlook.com2026-02-24 → 2026-03-25 · 2 obs

● 2026-02-24 20:43:28
● 2026-03-25 18:50:06

●A104.21.34.522026-02-24 → 2026-03-25 · 5 obs

○ 2018-05-31 03:21:06
● 2026-02-24 20:43:28
● 2026-03-19 18:25:14
○ 2026-03-20 09:53:12
● 2026-03-25 18:50:06

●A172.67.198.1412026-02-24 → 2026-03-25 · 5 obs

○ 2018-05-31 03:21:06
● 2026-02-24 20:43:28
● 2026-03-19 18:25:14
○ 2026-03-20 09:53:12
● 2026-03-25 18:50:06

○A185.23.117.1282026-02-24 → 2026-03-25 · 2 obs

○ 2026-02-24 20:43:28
○ 2026-03-25 18:50:06

○A188.114.96.02026-03-20 → 2026-03-20 · 3 obs

○ 2026-03-19 18:25:14
● 2026-03-20 09:53:12
○ 2026-03-25 18:50:06

○A188.114.97.02026-03-20 → 2026-03-20 · 3 obs

○ 2026-03-19 18:25:14
● 2026-03-20 09:53:12
○ 2026-03-25 18:50:06

●A2606:4700:3030::ac43:c68d2026-02-24 → 2026-03-25 · 5 obs

○ 2018-05-31 03:21:06
● 2026-02-24 20:43:28
● 2026-03-19 18:25:14
○ 2026-03-20 09:53:12
● 2026-03-25 18:50:06

●A2606:4700:3031::6815:22342026-02-24 → 2026-03-25 · 5 obs

○ 2018-05-31 03:21:06
● 2026-02-24 20:43:28
● 2026-03-19 18:25:14
○ 2026-03-20 09:53:12
● 2026-03-25 18:50:06

○A2a06:98c1:3120::2026-03-20 → 2026-03-20 · 3 obs

○ 2026-03-19 18:25:14
● 2026-03-20 09:53:12
○ 2026-03-25 18:50:06

○A2a06:98c1:3121::2026-03-20 → 2026-03-20 · 3 obs

○ 2026-03-19 18:25:14
● 2026-03-20 09:53:12
○ 2026-03-25 18:50:06

○A85.214.126.762016-12-17 → 2018-05-31 · 4 obs

● 2016-12-17 02:57:32
● 2018-05-31 03:21:06
○ 2026-02-24 20:43:28
○ 2026-03-25 18:50:06

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
tomcalculation.com	aron.ns.cloudflare.com, coen.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.69

NS records: aron.ns.cloudflare.com, coen.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for tomcalculation.com (unsigned zone)

⏱️ Timing

Total: 136ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.198.141, 104.21.34.52`
AAAA	2	`2606:4700:3030::ac43:c68d, 2606:4700:3031::6815:2234`
NS	2	`aron.ns.cloudflare.com, coen.ns.cloudflare.com`
MX	1	`tomcalculation-com.mail.protection.outlo`
TXT	2	`MS=ms26517882, v=spf1 include:spf.protection.outlook.co`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`aron.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (aron.ns.cloudflare.com, aron.ns.cloudflare.com, aron.ns.cloudflare.com...)

Analysis

IP Addresses

tomcalculation.com maps to four IP numbers: 2606:4700:3030::ac43:c68d, 2606:4700:3031::6815:2234, 104.21.34.52 and 172.67.198.141.

Other host names, for instance epochtimes.com.hk, mailhub.epochtimes.com.hk, www.tfsf.org.tr, nohu.mn and shjkkj.com share IP numbers with tomcalculation.com.

Name Servers

Two name servers aron.ns.cloudflare.com and coen.ns.cloudflare.com are delegated to tomcalculation.com.

tomcalculation.com uses the same name server configuration as other domains, such as canadianheadstones.com, crazystar-casino.com, openhousegame.com, bulbr.com and rethreadsfoxystyle.com.

tomcalculation.com at least partially shares name servers with other domains such as sarafis.pl, milkiletisim.com, sdynsj.com, ndss-symposium.org and widewebdesign.ca.

These name servers are commonly used alongside lex.ns.cloudflare.com, dara.ns.cloudflare.com and jake.ns.cloudflare.com.

Host names with six IP numbers: Host name aron.ns.cloudflare.com points to 2606:4700:50::adf5:3a45, 2803:f800:50::6ca2:c045, 2a06:98c1:50::ac40:2045, 108.162.192.69, 172.64.32.69 and 173.245.58.69; host name coen.ns.cloudflare.com points to 2606:4700:58::a29f:2c97, 2803:f800:50::6ca2:c397, 2a06:98c1:50::ac40:2397, 108.162.195.151, 162.159.44.151 and 172.64.35.151.

Mail Servers

tomcalculation.com is handled by a single mail server, tomcalculation-com.mail.protection.outlook.com.

tomcalculation-com.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:ca04::c, 2a01:111:f403:ca04::e, 2a01:111:f403:ca04::10, 2a01:111:f403:ca09::20, 52.101.68.36, 52.101.73.1, 52.101.73.4 and 52.101.73.12.

tomcalculation.com - robtex.com