`seriousemail.com`

DNSSEC	⚠️ Not signed
A	72.52.251.73^{🇺🇸 LiquidWeb72.52.128.0/17 Liquid Web LLC 2703 Ena Dr. Lansing, MI 48917}
		PTR	`host.seriousemail.com`
NS	`brenda.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a4d^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`brenda.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c04d^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`brenda.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:204d^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`brenda.ns.cloudflare.com`
		A	108.162.192.77^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`brenda.ns.cloudflare.com`
		A	172.64.32.77^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`brenda.ns.cloudflare.com`
		A	173.245.58.77^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`brenda.ns.cloudflare.com`
NS	`hank.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b74^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hank.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c174^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`hank.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2174^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`hank.ns.cloudflare.com`
		A	108.162.193.116^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hank.ns.cloudflare.com`
		A	172.64.33.116^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hank.ns.cloudflare.com`
		A	173.245.59.116^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hank.ns.cloudflare.com`
MX	`mail.seriousemail.com` ⭐
		A	72.52.251.73^{🇺🇸 LiquidWeb72.52.128.0/17 Liquid Web LLC 2703 Ena Dr. Lansing, MI 48917}
			PTR	`host.seriousemail.com`
TXT	`v=spf1 ip4:72.52.251.73 include:_spf.sparkpostmail.com ~all`
SOA	`brenda.ns.cloudflare.com`dns@cloudflare.com serial=2398955653

`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=1774722637

Subdomains

host.seriousemail.com

mail.seriousemail.com

Same first word

seriousemail.com

DNS History

13 records (4 active, 9 former)

●NSbrenda.ns.cloudflare.com2026-03-28 → 2026-03-28 · 2 obs

○ 2019-04-08 09:35:50
● 2026-03-28 18:46:58

●NShank.ns.cloudflare.com2026-03-28 → 2026-03-28 · 2 obs

○ 2019-04-08 09:35:50
● 2026-03-28 18:46:58

○NSns1626.ztomy.com2015-07-22 → 2016-04-28 · 5 obs

○ 2008-03-19 08:19:58
● 2015-07-22 17:16:56
● 2016-04-28 21:03:08
○ 2017-02-13 09:55:40
○ 2026-03-28 18:46:58

○NSns2626.ztomy.com2015-07-22 → 2016-04-28 · 5 obs

○ 2008-03-19 08:19:58
● 2015-07-22 17:16:56
● 2016-04-28 21:03:08
○ 2017-02-13 09:55:40
○ 2026-03-28 18:46:58

○NSsk.s5.ans1.ns148.ztomy.com2017-02-13 → 2017-02-13 · 4 obs

○ 2016-04-28 21:03:08
● 2017-02-13 09:55:40
○ 2019-04-08 09:35:50
○ 2026-03-28 18:46:58

○NSsk.s5.ans2.ns148.ztomy.com2017-02-13 → 2017-02-13 · 4 obs

○ 2016-04-28 21:03:08
● 2017-02-13 09:55:40
○ 2019-04-08 09:35:50
○ 2026-03-28 18:46:58

○MXmail.b-io.co2015-07-22 → 2015-07-22 · 4 obs

○ 2008-03-19 08:19:58
● 2015-07-22 17:16:56
○ 2015-10-14 11:10:34
○ 2026-03-28 18:46:58

●MXmail.seriousemail.com2026-03-28 → 2026-03-28 · 2 obs

○ 2015-10-14 11:10:34
● 2026-03-28 18:46:58

○A204.11.56.482015-07-22 → 2016-04-28 · 5 obs

○ 2008-03-19 08:19:58
● 2015-07-22 17:16:56
● 2016-04-28 21:03:08
○ 2017-02-13 09:55:40
○ 2026-03-28 18:46:58

○A208.91.197.462017-02-13 → 2017-02-13 · 4 obs

○ 2016-04-28 21:03:08
● 2017-02-13 09:55:40
○ 2019-04-08 09:35:50
○ 2026-03-28 18:46:58

●A72.52.251.732026-03-28 → 2026-03-28 · 2 obs

○ 2019-04-08 09:35:50
● 2026-03-28 18:46:58

○PTRns1626.ztomy.com2015-07-22 → 2015-07-22 · 3 obs

● 2015-07-22 17:16:56
○ 2017-02-13 09:55:40
○ 2026-03-28 18:46:58

○PTRsk.s5.ans1.ns148.ztomy.com2017-02-13 → 2017-02-13 · 4 obs

○ 2015-07-22 17:16:56
● 2017-02-13 09:55:40
○ 2019-04-08 09:35:50
○ 2026-03-28 18:46:58

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
seriousemail.com	hank.ns.cloudflare.com, brenda.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.77

NS records: hank.ns.cloudflare.com, brenda.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for seriousemail.com (unsigned zone)

⏱️ Timing

Total: 218ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`72.52.251.73`
NS	2	`brenda.ns.cloudflare.com, hank.ns.cloudflare.com`
MX	1	`mail.seriousemail.com (pri: 10)`
TXT	1	`v=spf1 ip4:72.52.251.73 include:_spf.spa`
SOA	1	`brenda.ns.cloudflare.com dns.cloudflare.`

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

seriousemail.com is a parent of host.seriousemail.com and mail.seriousemail.com.

IP Addresses

seriousemail.com points to a single IP: 72.52.251.73.

Other host names, for instance mail.serious.email, ns2.nyfiresafe.com, mail.nyfiresafe.com, nyfiresafe.com and mail.dommermuth.com share IP numbers with seriousemail.com.

Name Servers

Two name servers brenda.ns.cloudflare.com and hank.ns.cloudflare.com handle delegation for seriousemail.com.

seriousemail.com uses the same name server setup as other domains, for example murney.ca, tlitzen.com, snerfy.com, innovationsports.ca and lcgcarstar.com.

seriousemail.com partially shares name servers with other domains; examples include xswyy.com, dareforyou.site, gul.co.il, wikisiha.com and beeson.org.

these name servers are commonly used with the name servers hans.ns.cloudflare.com.

Host names with six IP numbers: brenda.ns.cloudflare.com points to: 2606:4700:50::adf5:3a4d, 2803:f800:50::6ca2:c04d, 2a06:98c1:50::ac40:204d, 108.162.192.77, 172.64.32.77 and 173.245.58.77; hank.ns.cloudflare.com points to: 2606:4700:58::adf5:3b74, 2803:f800:50::6ca2:c174, 2a06:98c1:50::ac40:2174, 108.162.193.116, 172.64.33.116 and 173.245.59.116.

Mail Servers

seriousemail.com is handled by a single mail server, mail.seriousemail.com.

mail.seriousemail.com points to a single IP: 72.52.251.73.

seriousemail.com - robtex.com