`400under40.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3037::6815:2144^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:9f87^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.33.68^{Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.159.135^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`athena.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a48^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`athena.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c048^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`athena.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2048^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`athena.ns.cloudflare.com`
		A	108.162.192.72^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`athena.ns.cloudflare.com`
		A	172.64.32.72^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`athena.ns.cloudflare.com`
		A	173.245.58.72^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`athena.ns.cloudflare.com`
NS	`mitch.ns.cloudflare.com`
		A	2606:4700:58::adf5:3bd0^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mitch.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1d0^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`mitch.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21d0^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`mitch.ns.cloudflare.com`
		A	108.162.193.208^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mitch.ns.cloudflare.com`
		A	172.64.33.208^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mitch.ns.cloudflare.com`
		A	173.245.59.208^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mitch.ns.cloudflare.com`
MX	`400under40-com.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:c803::^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-bn1pr21cu00200.inbound.protection.outlook.com`
		A	2a01:111:f403:c92c::3^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-dm5pr04cu00103.inbound.protection.outlook.com`
		A	2a01:111:f403:c946::3^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-ch0pr04cu00603.inbound.protection.outlook.com`
		A	2a01:111:f403:f90a::1^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-bn8pr03cu00201.inbound.protection.outlook.com`
		A	52.101.8.34^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-dm2pr04cu00102.inbound.protection.outlook.com`
		A	52.101.10.2^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-bn8pr03cu00202.inbound.protection.outlook.com`
		A	52.101.11.2^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sn1pr03cu00102.inbound.protection.outlook.com`
		A	52.101.40.4^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-cy5pr03cu00204.inbound.protection.outlook.com`
TXT	`MS=ms14088880`
TXT	`MS=ms63637736`
TXT	`v=spf1 include:spf.protection.outlook.com include:_netblocks.mimecast.com -all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.33.68, 172.67.159.135
		IPv6	2606:4700:3037::6815:2144, 2606:4700:3037::ac43:9f87
SOA	`athena.ns.cloudflare.com`dns@cloudflare.com serial=2397582869

`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=1774372982

Subdomains

mail.400under40.com

Same first word

400under40.com

DNS History

18 records (7 active, 11 former)

●NSathena.ns.cloudflare.com2026-02-18 → 2026-03-24 · 3 obs

○ 2019-12-27 09:35:50
● 2026-02-18 05:02:02
● 2026-03-24 17:50:16

○NSdolly.ns.cloudflare.com2019-12-27 → 2019-12-27 · 4 obs

○ 2017-02-18 04:58:52
● 2019-12-27 09:35:50
○ 2026-02-18 05:02:02
○ 2026-03-24 17:50:16

●NSmitch.ns.cloudflare.com2026-02-18 → 2026-03-24 · 3 obs

○ 2019-12-27 09:35:50
● 2026-02-18 05:02:02
● 2026-03-24 17:50:16

○NSns17.domaincontrol.com2015-05-21 → 2017-02-18 · 4 obs

● 2015-05-21 14:48:58
● 2017-02-18 04:58:52
○ 2019-12-27 09:35:50
○ 2026-03-24 17:50:16

○NSns18.domaincontrol.com2015-05-21 → 2017-02-18 · 4 obs

● 2015-05-21 14:48:58
● 2017-02-18 04:58:52
○ 2019-12-27 09:35:50
○ 2026-03-24 17:50:16

○NSroan.ns.cloudflare.com2019-12-27 → 2019-12-27 · 4 obs

○ 2017-02-18 04:58:52
● 2019-12-27 09:35:50
○ 2026-02-18 05:02:02
○ 2026-03-24 17:50:16

●MX400under40-com.mail.protection.outlook.com2026-02-18 → 2026-03-24 · 3 obs

○ 2019-12-27 09:35:50
● 2026-02-18 05:02:02
● 2026-03-24 17:50:16

○MXus-smtp-inbound-1.mimecast.com2015-05-21 → 2019-12-27 · 4 obs

● 2015-05-21 14:48:58
● 2019-12-27 09:35:50
○ 2026-02-18 05:02:02
○ 2026-03-24 17:50:16

○MXus-smtp-inbound-2.mimecast.com2015-05-21 → 2019-12-27 · 4 obs

● 2015-05-21 14:48:58
● 2019-12-27 09:35:50
○ 2026-02-18 05:02:02
○ 2026-03-24 17:50:16

●A104.21.33.682026-02-18 → 2026-03-24 · 3 obs

○ 2019-12-27 09:35:50
● 2026-02-18 05:02:02
● 2026-03-24 17:50:16

○A104.27.138.142019-12-27 → 2019-12-27 · 4 obs

○ 2017-02-18 04:58:52
● 2019-12-27 09:35:50
○ 2026-02-18 05:02:02
○ 2026-03-24 17:50:16

○A104.27.139.142019-12-27 → 2019-12-27 · 4 obs

○ 2017-02-18 04:58:52
● 2019-12-27 09:35:50
○ 2026-02-18 05:02:02
○ 2026-03-24 17:50:16

●A172.67.159.1352026-02-18 → 2026-03-24 · 3 obs

○ 2019-12-27 09:35:50
● 2026-02-18 05:02:02
● 2026-03-24 17:50:16

○A23.229.193.2272015-05-21 → 2017-02-18 · 4 obs

● 2015-05-21 14:48:58
● 2017-02-18 04:58:52
○ 2019-12-27 09:35:50
○ 2026-03-24 17:50:16

○A2606:4700:30::681b:8a0e2019-12-27 → 2019-12-27 · 4 obs

○ 2017-02-18 04:58:52
● 2019-12-27 09:35:50
○ 2026-02-18 05:02:02
○ 2026-03-24 17:50:16

○A2606:4700:30::681b:8b0e2019-12-27 → 2019-12-27 · 4 obs

○ 2017-02-18 04:58:52
● 2019-12-27 09:35:50
○ 2026-02-18 05:02:02
○ 2026-03-24 17:50:16

●A2606:4700:3037::6815:21442026-02-18 → 2026-03-24 · 3 obs

○ 2019-12-27 09:35:50
● 2026-02-18 05:02:02
● 2026-03-24 17:50:16

●A2606:4700:3037::ac43:9f872026-02-18 → 2026-03-24 · 3 obs

○ 2019-12-27 09:35:50
● 2026-02-18 05:02:02
● 2026-03-24 17:50:16

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	d.gtld-servers.net, m.gtld-servers.net, k.gtld-servers.net, e.gtld-servers.net...	-
400under40.com	athena.ns.cloudflare.com, mitch.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.208

NS records: athena.ns.cloudflare.com, mitch.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 400under40.com (unsigned zone)

⏱️ Timing

Total: 213ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.33.68, 172.67.159.135`
AAAA	2	`2606:4700:3037::6815:2144, 2606:4700:3037::ac43:9f87`
NS	2	`athena.ns.cloudflare.com, mitch.ns.cloudflare.com`
MX	1	`400under40-com.mail.protection.outlook.c`
TXT	3	`MS=ms14088880, MS=ms63637736...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`athena.ns.cloudflare.com dns.cloudflare.`

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

400under40.com is the parent of mail.400under40.com.

IP Addresses

400under40.com points to four IP numbers: 2606:4700:3037::6815:2144, 2606:4700:3037::ac43:9f87, 104.21.33.68 and 172.67.159.135.

Other host names including patentingenuity.com, www.koitzgroup.com, mcnab.co.uk, rubemmayer.com and domedemblem.com share IP numbers with 400under40.com.

Name Servers

400under40.com's delegation uses two name servers, athena.ns.cloudflare.com and mitch.ns.cloudflare.com.

400under40.com shares the same name server setup as other domains, for example wisegateway.com, ics-cables.sk, rbrlondon.co.uk, elecpeak.com and pshinghal.com.

400under40.com at least partially shares name servers with other domains, including energiadeamerica.mx, soeawardnetwork.pages.dev, koy-bearings.ru, vulnerabletarget.com and 0lag.host.

These name servers are often used together with rocco.ns.cloudflare.com.

Host names with six IP numbers:

athena.ns.cloudflare.com points to: 2606:4700:50::adf5:3a48, 2803:f800:50::6ca2:c048, 2a06:98c1:50::ac40:2048, 108.162.192.72, 172.64.32.72 and 173.245.58.72.

mitch.ns.cloudflare.com points to: 2606:4700:58::adf5:3bd0, 2803:f800:50::6ca2:c1d0, 2a06:98c1:50::ac40:21d0, 108.162.193.208, 172.64.33.208 and 173.245.59.208.

Mail Servers

400under40.com is handled by a single mail server, 400under40-com.mail.protection.outlook.com.

Hostname 400under40-com.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:c803::, 2a01:111:f403:c92c::3, 2a01:111:f403:c946::3, 2a01:111:f403:f90a::1, 52.101.8.34, 52.101.10.2, 52.101.11.2 and 52.101.40.4.

400under40.com - robtex.com

400under40.com

com

Subdomains

Same first word

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

Hierarchy

IP Addresses

Name Servers

Mail Servers

`400under40.com`

`com`