`fsharp4u.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3034::6815:32d1^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::ac43:a71d^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.50.209^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.167.29^{🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`adelaide.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:2601^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`adelaide.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c201^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`adelaide.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2201^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`adelaide.ns.cloudflare.com`
		A	108.162.194.1^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`adelaide.ns.cloudflare.com`
		A	162.159.38.1^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`adelaide.ns.cloudflare.com`
		A	172.64.34.1^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`adelaide.ns.cloudflare.com`
NS	`cris.ns.cloudflare.com`
		A	2606:4700:58::a29f:2cca^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cris.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3ca^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`cris.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23ca^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`cris.ns.cloudflare.com`
		A	108.162.195.202^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cris.ns.cloudflare.com`
		A	162.159.44.202^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cris.ns.cloudflare.com`
		A	172.64.35.202^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cris.ns.cloudflare.com`
MX	`route1.mx.cloudflare.net` ⭐
		A	2606:4700:f5::b^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	2606:4700:f5::c^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	2606:4700:f5::d^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.11^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.12^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.13^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
MX	`route3.mx.cloudflare.net`⁽⁶⁸⁾
		A	2606:4700:f5::11^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	2606:4700:f5::12^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	2606:4700:f5::13^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.23^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.24^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.25^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
MX	`route2.mx.cloudflare.net`⁽⁹⁸⁾
		A	2606:4700:f5::e^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	2606:4700:f5::f^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	2606:4700:f5::10^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.17^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.18^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.19^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
TXT	`v=spf1 include:_spf.mx.cloudflare.net ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.50.209, 172.67.167.29
		IPv6 hints	2606:4700:3034::6815:32d1, 2606:4700:3035::ac43:a71d
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=104, name=cloudflare-ech.com
SOA	`adelaide.ns.cloudflare.com`dns@cloudflare.com serial=2410714899

`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=1786386574

Previously MX for

fsharp4u.com

Same first word

fsharp4u.com

DNS History

20 records (9 active, 11 former)

●NSadelaide.ns.cloudflare.com2026-08-04 → 2026-08-10 · 3 obs

○ 2019-04-08 20:59:38
● 2026-08-04 01:29:54
● 2026-08-10 18:47:30

●NScris.ns.cloudflare.com2026-08-04 → 2026-08-10 · 3 obs

○ 2019-04-08 20:59:38
● 2026-08-04 01:29:54
● 2026-08-10 18:47:30

○NSns1.above.com2017-02-08 → 2017-02-08 · 4 obs

○ 2016-06-18 17:47:46
● 2017-02-08 18:35:12
○ 2019-04-08 20:59:38
○ 2026-08-10 18:47:30

○NSns1.asmallorange.com2015-07-07 → 2015-07-07 · 3 obs

● 2015-07-07 14:38:18
○ 2016-02-23 14:23:50
○ 2026-08-10 18:47:30

○NSns1.parkingcrew.net2016-06-18 → 2016-06-18 · 4 obs

○ 2016-02-23 14:23:50
● 2016-06-18 17:47:46
○ 2017-02-08 18:35:12
○ 2026-08-10 18:47:30

○NSns2.above.com2017-02-08 → 2017-02-08 · 4 obs

○ 2016-06-18 17:47:46
● 2017-02-08 18:35:12
○ 2019-04-08 20:59:38
○ 2026-08-10 18:47:30

○NSns2.asmallorange.com2015-07-07 → 2015-07-07 · 3 obs

● 2015-07-07 14:38:18
○ 2016-02-23 14:23:50
○ 2026-08-10 18:47:30

○NSns2.parkingcrew.net2016-06-18 → 2016-06-18 · 4 obs

○ 2016-02-23 14:23:50
● 2016-06-18 17:47:46
○ 2017-02-08 18:35:12
○ 2026-08-10 18:47:30

○MXexchange.dewile.net2016-06-18 → 2016-06-18 · 4 obs

○ 2016-02-23 14:23:50
● 2016-06-18 17:47:46
○ 2017-02-08 18:35:12
○ 2026-08-10 18:47:30

○MXfsharp4u.com2015-07-07 → 2015-07-07 · 3 obs

● 2015-07-07 14:38:18
○ 2016-02-23 14:23:50
○ 2026-08-10 18:47:30

●MXroute1.mx.cloudflare.net2026-08-04 → 2026-08-10 · 3 obs

○ 2017-02-08 18:35:12
● 2026-08-04 01:29:54
● 2026-08-10 18:47:30

●MXroute2.mx.cloudflare.net2026-08-04 → 2026-08-10 · 3 obs

○ 2017-02-08 18:35:12
● 2026-08-04 01:29:54
● 2026-08-10 18:47:30

●MXroute3.mx.cloudflare.net2026-08-04 → 2026-08-10 · 3 obs

○ 2017-02-08 18:35:12
● 2026-08-04 01:29:54
● 2026-08-10 18:47:30

○A103.224.212.2222017-02-08 → 2017-02-08 · 4 obs

○ 2016-06-18 17:47:46
● 2017-02-08 18:35:12
○ 2019-04-08 20:59:38
○ 2026-08-10 18:47:30

●A104.21.50.2092026-08-04 → 2026-08-10 · 3 obs

○ 2019-04-08 20:59:38
● 2026-08-04 01:29:54
● 2026-08-10 18:47:30

○A143.95.39.1962015-07-07 → 2015-07-07 · 3 obs

● 2015-07-07 14:38:18
○ 2016-02-23 14:23:50
○ 2026-08-10 18:47:30

●A172.67.167.292026-08-04 → 2026-08-10 · 3 obs

○ 2019-04-08 20:59:38
● 2026-08-04 01:29:54
● 2026-08-10 18:47:30

○A185.53.177.82016-06-18 → 2016-06-18 · 4 obs

○ 2016-02-23 14:23:50
● 2016-06-18 17:47:46
○ 2017-02-08 18:35:12
○ 2026-08-10 18:47:30

●A2606:4700:3034::6815:32d12026-08-04 → 2026-08-10 · 3 obs

○ 2019-04-08 20:59:38
● 2026-08-04 01:29:54
● 2026-08-10 18:47:30

●A2606:4700:3035::ac43:a71d2026-08-04 → 2026-08-10 · 3 obs

○ 2019-04-08 20:59:38
● 2026-08-04 01:29:54
● 2026-08-10 18:47:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	c.gtld-servers.net, e.gtld-servers.net, k.gtld-servers.net, g.gtld-servers.net...	-
fsharp4u.com	adelaide.ns.cloudflare.com, cris.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.195.202

NS records: adelaide.ns.cloudflare.com, cris.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for fsharp4u.com (unsigned zone)

⏱️ Timing

Total: 233ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.167.29, 104.21.50.209`
AAAA	2	`2606:4700:3034::6815:32d1, 2606:4700:3035::ac43:a71d`
NS	2	`adelaide.ns.cloudflare.com, cris.ns.cloudflare.com`
MX	3	`route1.mx.cloudflare.net (pri: 52), route3.mx.cloudflare.net (pri: 68)...`
TXT	1	`v=spf1 include:_spf.mx.cloudflare.net ~a`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`adelaide.ns.cloudflare.com dns.cloudflar`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

fsharp4u.com resolves to four IP addresses: 104.21.50.209, 172.67.167.29, 2606:4700:3034::6815:32d1 and 2606:4700:3035::ac43:a71d.

sauditok.com, casino-mate-pokies.com, urbangamesmarket.uk plus two other host names have IP numbers in common with fsharp4u.com.

Name Servers

The NS records for fsharp4u.com delegate to adelaide.ns.cloudflare.com and cris.ns.cloudflare.com.

The name server configuration of fsharp4u.com is shared with other domains, for instance winbouts.com, 51posts.com, blog-ask.com and two others.

fsharp4u.com partially shares its NS delegation with several other domains, including midlothiansealcoating.com, prensaprint.com, kebun4dlogin.xyz and two others.

These name servers tend to appear together with the name servers jamie.ns.cloudflare.com, evangeline.ns.cloudflare.com and sloan.ns.cloudflare.com, plus two others.

Hosts with 6 IP addresses each:

adelaide.ns.cloudflare.com maps to 108.162.194.1, 162.159.38.1, 172.64.34.1 and 3 additional IP addresses.

cris.ns.cloudflare.com maps to 108.162.195.202, 162.159.44.202, 172.64.35.202 and 3 additional IP addresses.

Mail Servers

fsharp4u.com uses three mail servers — route1.mx.cloudflare.net, route2.mx.cloudflare.net and route3.mx.cloudflare.net.

At least some of the mail servers used by fsharp4u.com are shared with other domains: (0x706f726e)clown.com, zenithlook.shop, guitarinterludes.com and two others among them.

Hosts with 6 IP addresses each:

route1.mx.cloudflare.net maps to 162.159.205.11, 162.159.205.12, 162.159.205.13 and 3 additional IP addresses.

route2.mx.cloudflare.net maps to 162.159.205.17, 162.159.205.18, 162.159.205.19 and 3 additional IP addresses.

route3.mx.cloudflare.net maps to 162.159.205.23, 162.159.205.24, 162.159.205.25 and 3 additional IP addresses.

fsharp4u.com - robtex.com

fsharp4u.com

com

Previously MX for

Same first word

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

IP Addresses

Name Servers

Mail Servers

`fsharp4u.com`

`com`