`0ff.dev`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::ac43:d6c2^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::6815:5b57^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.91.87^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.214.194^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`peter.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2c03^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`peter.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c303^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`peter.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2303^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`peter.ns.cloudflare.com`
		A	108.162.195.3^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`peter.ns.cloudflare.com`
		A	162.159.44.3^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`peter.ns.cloudflare.com`
		A	172.64.35.3^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`peter.ns.cloudflare.com`
NS	`susan.ns.cloudflare.com`
		A	2606:4700:50::a29f:26c7^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`susan.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2c7^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`susan.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22c7^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`susan.ns.cloudflare.com`
		A	108.162.194.199^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`susan.ns.cloudflare.com`
		A	162.159.38.199^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`susan.ns.cloudflare.com`
		A	172.64.34.199^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`susan.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	`protonmail-verification=ec17f0598e6d55a0757deb3cbf45d65f637b946e`
TXT	`v=spf1 mx include:_spf.protonmail.ch ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.91.87, 172.67.214.194
		IPv6 hints	2606:4700:3031::ac43:d6c2, 2606:4700:3035::6815:5b57
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=139, name=cloudflare-ech.com
SOA	`peter.ns.cloudflare.com`dns@cloudflare.com serial=2408765871

`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)

Subdomains

canary.0ff.dev

Same first word

0ff.hu

0ff.work

0ff.cc

0ff.at

0ff.co

0ff.de

0ff.org

0ff.ru

0ff.ai

0ff.net

0ff.cn

0ff.nl

0ff.dev

Similar names

f0f.com

f0f.fund

f0f.ru

ff0.net

f0f.org

ff0.fr

ff0.eu

f0f.cn

ff0.ru

ff0.de

f0f.net

ff0.xyz

f0f.holdings

ff0.icu

ff0.com

ff0.cn

ff0.jp

f0f.de

ff0.org

DNS History

8 records (8 active, 0 former)

●NSpeter.ns.cloudflare.com2026-07-08 → 2026-07-28 · 2 obs

● 2026-07-08 04:02:16
● 2026-07-28 01:57:44

●NSsusan.ns.cloudflare.com2026-07-08 → 2026-07-28 · 2 obs

● 2026-07-08 04:02:16
● 2026-07-28 01:57:44

●MXmail.protonmail.ch2026-07-08 → 2026-07-28 · 2 obs

● 2026-07-08 04:02:16
● 2026-07-28 01:57:44

●MXmailsec.protonmail.ch2026-07-08 → 2026-07-28 · 2 obs

● 2026-07-08 04:02:16
● 2026-07-28 01:57:44

●A104.21.91.872026-07-08 → 2026-07-28 · 2 obs

● 2026-07-08 04:02:16
● 2026-07-28 01:57:44

●A172.67.214.1942026-07-08 → 2026-07-28 · 2 obs

● 2026-07-08 04:02:16
● 2026-07-28 01:57:44

●A2606:4700:3031::ac43:d6c22026-07-08 → 2026-07-28 · 2 obs

● 2026-07-08 04:02:16
● 2026-07-28 01:57:44

●A2606:4700:3035::6815:5b572026-07-08 → 2026-07-28 · 2 obs

● 2026-07-08 04:02:16
● 2026-07-28 01:57:44

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
dev	ns-tld3.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com, ns-tld1.charlestonroadregistry.com...	10 records
0ff.dev	susan.ns.cloudflare.com, peter.ns.cloudflare.com	-

✅ Authoritative Response

Server:162.159.38.199

NS records: susan.ns.cloudflare.com, peter.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 0ff.dev (unsigned zone)

⏱️ Timing

Total: 838ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.91.87, 172.67.214.194`
AAAA	2	`2606:4700:3031::ac43:d6c2, 2606:4700:3035::6815:5b57`
NS	2	`peter.ns.cloudflare.com, susan.ns.cloudflare.com`
MX	2	`mail.protonmail.ch (pri: 10), mailsec.protonmail.ch (pri: 20)`
TXT	2	`protonmail-verification=ec17f0598e6d55a0, v=spf1 mx include:_spf.protonmail.ch ~al`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`peter.ns.cloudflare.com dns.cloudflare.c`

📌 Glue Records Collected

Total: 10

Out-of-bailiwick: 10 (ns-tld5.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com...)

Analysis

Hierarchy

canary.0ff.dev is delegated beneath 0ff.dev.

IP Addresses

0ff.dev points to the four IP addresses 104.21.91.87, 172.67.214.194, 2606:4700:3031::ac43:d6c2 and 2606:4700:3035::6815:5b57.

cwsfas.com, media-ten.com.cdn.cloudflare.net, bonekapino.com plus two other host names have IP numbers in common with 0ff.dev.

Name Servers

The NS records for 0ff.dev delegate to peter.ns.cloudflare.com and susan.ns.cloudflare.com.

The name server configuration of 0ff.dev is shared with other domains, for instance e-global.es, boxecanada.org, gamingbio.id and two others.

There is at least partial name server overlap between 0ff.dev and other domains — wfaipu.net, 90phut.com.co, toyomotornord.ro and two more among them.

These name servers tend to appear in combination with the name servers denver.ns.cloudflare.com, damon.ns.cloudflare.com, leonard.ns.cloudflare.com and kiki.ns.cloudflare.com.

Hosts with 6 IP addresses each:

peter.ns.cloudflare.com maps to 108.162.195.3, 162.159.44.3, 172.64.35.3 and 3 additional IP addresses.

susan.ns.cloudflare.com maps to 108.162.194.199, 162.159.38.199, 172.64.34.199 and 3 additional IP addresses.

Mail Servers

0ff.dev uses two mail servers, mail.protonmail.ch and mailsec.protonmail.ch.

The mail server setup of 0ff.dev matches that of other domains such as liberux.net, jorge.it, vvoip.org.uk and two others.

At least some of the mail servers used by 0ff.dev are shared with other domains: njbasecamp.com, iconcapitalsa.com, crypor.com and two others among them.

mail.protonmail.ch points to 176.119.200.128, 185.70.42.128 and 185.205.70.128. mailsec.protonmail.ch points to 176.119.200.129, 185.70.42.129 and 185.205.70.129. Both hosts resolve to three IP numbers.

0ff.dev - robtex.com

0ff.dev

dev

Subdomains

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

Hierarchy

IP Addresses

Name Servers

Mail Servers

`0ff.dev`

`dev`