1os.dev - dns.ninja

`1os.dev`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::ac43:93c1^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3031::6815:1ce3^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.28.227^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.147.193^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`andy.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b65^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`andy.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c165^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`andy.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2165^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`andy.ns.cloudflare.com`
		A	108.162.193.101^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`andy.ns.cloudflare.com`
		A	172.64.33.101^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`andy.ns.cloudflare.com`
		A	173.245.59.101^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`andy.ns.cloudflare.com`
NS	`olga.ns.cloudflare.com`
		A	2606:4700:50::adf5:3a89^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`olga.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c089^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`olga.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2089^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`olga.ns.cloudflare.com`
		A	108.162.192.137^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`olga.ns.cloudflare.com`
		A	172.64.32.137^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`olga.ns.cloudflare.com`
		A	173.245.58.137^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`olga.ns.cloudflare.com`
MX	`mailserver.1os.dev` ⭐
		A	168.119.158.200^{🇩🇪 Hetzner168.119.0.0/16 HETZNER-DC}
			PTR	`mailserver.1os.dev`
TXT	`v=spf1 mx a:mailserver.1os.dev ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.28.227, 172.67.147.193
		IPv6 hints	2606:4700:3030::ac43:93c1, 2606:4700:3031::6815:1ce3
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=90, name=cloudflare-ech.com
SOA	`andy.ns.cloudflare.com`dns@cloudflare.com serial=2408743007

`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

mailserver.1os.dev

Same first word

1os.net

1os.eu

1os.ai

1os.co.jp

1os.no

1os.ca

1os.us

1os.de

1os.su

1os.dev

1os.com

1os.org

1os.ru

1os.link

1os.jp

Similar names

os1.me

1so.us

os1.ru

s1o.net

so1.eu

1so.org

os1.cn

so1.ai

so1.nl

1so.pl

so1.be

o1s.co.uk

so1.ru

o1s.com

os1.com

so1.org

o1s.net

o1s.de

so1.cc

os1.dk

so1.asia

os1.eu

so1.vn

so1.com.br

o1s.org

so1.com

s1o.com

s1o.jp

so1.de

so1.ch

so1.in

os1.it

os1.de

so1.cn

so1.com.vn

o1s.cn

os1.in

so1.info

1so.casino

s1o.cc

so1.co

1so.cc

so1.mobi

os1.pl

1so.de

s1o.de

os1.ch

1so.com.cn

DNS History

15 records (7 active, 8 former)

●NSandy.ns.cloudflare.com2026-02-14 → 2026-07-26 · 2 obs

● 2026-02-14 17:26:50
● 2026-07-26 11:21:14

●NSolga.ns.cloudflare.com2026-02-14 → 2026-07-26 · 2 obs

● 2026-02-14 17:26:50
● 2026-07-26 11:21:14

●MXmailserver.1os.dev2026-02-14 → 2026-07-26 · 3 obs

○ 2017-05-13 14:30:18
● 2026-02-14 17:26:50
● 2026-07-26 11:21:14

○MXyour-dns-needs-immediate-attention.dev2016-11-18 → 2017-05-13 · 4 obs

● 2016-11-18 15:20:20
● 2017-05-13 14:30:18
○ 2026-02-14 17:26:50
○ 2026-07-26 11:21:14

●A104.21.28.2272026-02-14 → 2026-07-26 · 9 obs

○ 2017-05-13 14:30:18
● 2026-02-14 17:26:50
● 2026-05-01 06:47:12
○ 2026-05-20 10:31:42
● 2026-05-21 07:42:48
● 2026-06-12 02:14:52
○ 2026-06-13 11:18:38
● 2026-06-15 19:58:24
● 2026-07-26 11:21:14

○A127.0.53.532016-11-18 → 2017-05-13 · 4 obs

● 2016-11-18 15:20:20
● 2017-05-13 14:30:18
○ 2026-02-14 17:26:50
○ 2026-07-26 11:21:14

●A172.67.147.1932026-02-14 → 2026-07-26 · 9 obs

○A188.114.96.02026-05-20 → 2026-06-13 · 7 obs

○ 2026-05-01 06:47:12
● 2026-05-20 10:31:42
○ 2026-05-21 07:42:48
○ 2026-06-12 02:14:52
● 2026-06-13 11:18:38
○ 2026-06-15 19:58:24
○ 2026-07-26 11:21:14

○A188.114.97.02026-05-20 → 2026-06-13 · 7 obs

○ 2026-05-01 06:47:12
● 2026-05-20 10:31:42
○ 2026-05-21 07:42:48
○ 2026-06-12 02:14:52
● 2026-06-13 11:18:38
○ 2026-06-15 19:58:24
○ 2026-07-26 11:21:14

●A2606:4700:3030::ac43:93c12026-07-26 → 2026-07-26 · 2 obs

○ 2026-06-15 19:58:24
● 2026-07-26 11:21:14

●A2606:4700:3031::6815:1ce32026-07-26 → 2026-07-26 · 2 obs

○ 2026-06-15 19:58:24
● 2026-07-26 11:21:14

○A2606:4700:3032::6815:1ce32026-02-14 → 2026-06-15 · 9 obs

○A2606:4700:3034::ac43:93c12026-02-14 → 2026-06-15 · 9 obs

○A2a06:98c1:3120::2026-05-20 → 2026-06-13 · 7 obs

○ 2026-05-01 06:47:12
● 2026-05-20 10:31:42
○ 2026-05-21 07:42:48
○ 2026-06-12 02:14:52
● 2026-06-13 11:18:38
○ 2026-06-15 19:58:24
○ 2026-07-26 11:21:14

○A2a06:98c1:3121::2026-05-20 → 2026-06-13 · 7 obs

○ 2026-05-01 06:47:12
● 2026-05-20 10:31:42
○ 2026-05-21 07:42:48
○ 2026-06-12 02:14:52
● 2026-06-13 11:18:38
○ 2026-06-15 19:58:24
○ 2026-07-26 11:21:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
dev	ns-tld3.charlestonroadregistry.com, ns-tld5.charlestonroadregistry.com, ns-tld1.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com...	-
1os.dev	olga.ns.cloudflare.com, andy.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.32.137

NS records: olga.ns.cloudflare.com, andy.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 1os.dev (unsigned zone)

⏱️ Timing

Total: 404ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.28.227, 172.67.147.193`
AAAA	2	`2606:4700:3031::6815:1ce3, 2606:4700:3030::ac43:93c1`
NS	2	`andy.ns.cloudflare.com, olga.ns.cloudflare.com`
MX	1	`mailserver.1os.dev (pri: 10)`
TXT	1	`v=spf1 mx a:mailserver.1os.dev ~all`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`andy.ns.cloudflare.com dns.cloudflare.co`

Analysis

Hierarchy

1os.dev is a parent domain of mailserver.1os.dev.

IP Addresses

1os.dev resolves to four IP addresses: 104.21.28.227, 172.67.147.193, 2606:4700:3030::ac43:93c1 and 2606:4700:3031::6815:1ce3.

telegram-premium-platinum-bonus.world, conversionoptimize.info, 68bb19.com and two other host names share IP numbers with 1os.dev.

Name Servers

Two name servers handle the delegation for 1os.dev: andy.ns.cloudflare.com and olga.ns.cloudflare.com.

1os.dev uses the same name servers as several other domains — among them letsgogreen.at, watchsend.com, sparanoid.network and two more.

1os.dev shares at least some of its name servers with other domains, including abdl.com.br, realcash.eu, rijke.org and two others.

These name servers are frequently seen alongside the name servers zariyah.ns.cloudflare.com.

Hostnames that resolve to 6 IP addresses:

andy.ns.cloudflare.com resolves to 108.162.193.101, 172.64.33.101 and 173.245.59.101 among others, with 3 other IP addresses in total.

olga.ns.cloudflare.com resolves to 108.162.192.137, 172.64.32.137 and 173.245.58.137 among others, with 3 other IP addresses in total.

Mail Servers

Mail for 1os.dev is handled by a single mail server, mailserver.1os.dev.

The mail server configuration of 1os.dev is identical to that of other domains — eyalla.com being one example.

mailserver.1os.dev carries a single IP number, which is 168.119.158.200.