🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`grenfeldt.dev`

DNSSEC	⚠️ Not signed
A	2606:4700:3034::ac43:9393^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::6815:1cce^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.28.206^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.147.147^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`karsyn.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:26c2^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`karsyn.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2c2^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`karsyn.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22c2^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`karsyn.ns.cloudflare.com`
		A	108.162.194.194^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`karsyn.ns.cloudflare.com`
		A	162.159.38.194^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`karsyn.ns.cloudflare.com`
		A	172.64.34.194^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`karsyn.ns.cloudflare.com`
NS	`sean.ns.cloudflare.com`
		A	2606:4700:58::adf5:3be7^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sean.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1e7^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`sean.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21e7^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`sean.ns.cloudflare.com`
		A	108.162.193.231^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sean.ns.cloudflare.com`
		A	172.64.33.231^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sean.ns.cloudflare.com`
		A	173.245.59.231^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sean.ns.cloudflare.com`
MX	`mail.protonmail.ch` ⭐
		A	176.119.200.128^{🇨🇭 Proton176.119.200.0/24}
			PTR	`mail.protonmail.ch`
		A	185.70.42.128^{🇨🇭 Proton185.70.42.0/24}
			PTR	`mail.protonmail.ch`
		A	185.205.70.128^{🇫🇷 Proton185.205.70.0/24}
			PTR	`mail.protonmail.ch`
MX	`mailsec.protonmail.ch`⁽²⁰⁾
		A	176.119.200.129^{🇨🇭 Proton176.119.200.0/24}
			PTR	`mailsec.protonmail.ch`
		A	185.70.42.129^{🇨🇭 Proton185.70.42.0/24}
			PTR	`mailsec.protonmail.ch`
		A	185.205.70.129^{🇫🇷 Proton185.205.70.0/24}
			PTR	`mailsec.protonmail.ch`
TXT	`ahrefs-site-verification_25eeab23f611fce7bed4d2a55ce83698aba0080db454979ae5f6...`
TXT	`google-site-verification=VtUUVJJAy5jdcw7PRJLbZ5nS1XEu5LJPTKZCM3OY4ww`
TXT	`protonmail-verification=b0dfe900c245838341b61dece6e8c048bd787a54`
TXT	`v=spf1 include:_spf.protonmail.ch mx ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.28.206, 172.67.147.147
		IPv6 hints	2606:4700:3034::ac43:9393, 2606:4700:3037::6815:1cce
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=113, name=cloudflare-ech.com
SOA	`karsyn.ns.cloudflare.com`dns@cloudflare.com serial=2411568088

`dev`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns-tld1.charlestonroadregistry.com` ⭐
	NS	`ns-tld2.charlestonroadregistry.com`
	NS	`ns-tld3.charlestonroadregistry.com`
	NS	`ns-tld4.charlestonroadregistry.com`
	NS	`ns-tld5.charlestonroadregistry.com`
	SOA	`ns-tld1.charlestonroadregistry.com`cloud-dns-hostmaster@google.com serial=1

🔒 HSTS Preload (+subdomains)

Same first word

grenfeldt.dev

Previous names

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DNS History

8 records (8 active, 0 former)

●NSkarsyn.ns.cloudflare.com2026-08-22 → 2026-08-22 · 2 obs

● 2026-08-22 09:05:20
● 2026-08-22 21:37:00

●NSsean.ns.cloudflare.com2026-08-22 → 2026-08-22 · 2 obs

● 2026-08-22 09:05:20
● 2026-08-22 21:37:00

●MXmail.protonmail.ch2026-08-22 → 2026-08-22 · 2 obs

● 2026-08-22 09:05:20
● 2026-08-22 21:37:00

●MXmailsec.protonmail.ch2026-08-22 → 2026-08-22 · 2 obs

● 2026-08-22 09:05:20
● 2026-08-22 21:37:00

●A104.21.28.2062026-08-22 → 2026-08-22 · 2 obs

● 2026-08-22 09:05:20
● 2026-08-22 21:37:00

●A172.67.147.1472026-08-22 → 2026-08-22 · 2 obs

● 2026-08-22 09:05:20
● 2026-08-22 21:37:00

●A2606:4700:3034::ac43:93932026-08-22 → 2026-08-22 · 2 obs

● 2026-08-22 09:05:20
● 2026-08-22 21:37:00

●A2606:4700:3037::6815:1cce2026-08-22 → 2026-08-22 · 2 obs

● 2026-08-22 09:05:20
● 2026-08-22 21:37:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
dev	ns-tld4.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com, ns-tld5.charlestonroadregistry.com...	-
grenfeldt.dev	karsyn.ns.cloudflare.com, sean.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.33.231

NS records: karsyn.ns.cloudflare.com, sean.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for grenfeldt.dev (unsigned zone)

⏱️ Timing

Total: 705ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.28.206, 172.67.147.147`
AAAA	2	`2606:4700:3034::ac43:9393, 2606:4700:3037::6815:1cce`
NS	2	`karsyn.ns.cloudflare.com, sean.ns.cloudflare.com`
MX	2	`mail.protonmail.ch (pri: 10), mailsec.protonmail.ch (pri: 20)`
TXT	4	`ahrefs-site-verification_25eeab23f611fce, google-site-verification=VtUUVJJAy5jdcw7...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`karsyn.ns.cloudflare.com dns.cloudflare.`

Analysis

IP Addresses

grenfeldt.dev resolves to four IP addresses: 104.21.28.206, 172.67.147.147, 2606:4700:3034::ac43:9393 and 2606:4700:3037::6815:1cce.

Additional host names — goingpuravida.com, randallrego.com, caipirinha.com.mx and two others — share IP numbers with grenfeldt.dev.

Name Servers

grenfeldt.dev has two authoritative name servers — karsyn.ns.cloudflare.com and sean.ns.cloudflare.com.

grenfeldt.dev shares its name server setup with other domains, including masukhantu.top, wwbola.com, madamegafauna.com and two others.

grenfeldt.dev has at least partial name server overlap with other domains, such as gidd.io, zk8.cc, t(0x77616e6b)leorbitz.digital and two others.

It is common to find these name servers paired with the name servers luciana.ns.cloudflare.com.

Host names with 6 IP numbers:

karsyn.ns.cloudflare.com points to 108.162.194.194, 162.159.38.194, 172.64.34.194 and 3 other IP addresses.

sean.ns.cloudflare.com points to 108.162.193.231, 172.64.33.231, 173.245.59.231 and 3 other IP addresses.

Mail Servers

grenfeldt.dev has two mail servers: mail.protonmail.ch and mailsec.protonmail.ch.

grenfeldt.dev shares the same mail server setup as other domains, including provmantics.com, hippe-it.nl, triaste.com and two others.

grenfeldt.dev shares mail servers — at least in part — with other domains, including artecs-intl.com, angusyoung.co.uk, gabo.re and two others.

mail.protonmail.ch and mailsec.protonmail.ch each have three IP addresses — mail.protonmail.ch directs to 176.119.200.128, 185.70.42.128 and 185.205.70.128; mailsec.protonmail.ch directs to 176.119.200.129, 185.70.42.129 and 185.205.70.129.

grenfeldt.dev - robtex.com

grenfeldt.dev

dev

Same first word

Previous names

Next names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

Mail Servers

`grenfeldt.dev`

`dev`