21f2.com - dns.ninja

`21f2.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3034::6815:4b74^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3034::ac43:dece^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.75.116^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.222.206^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`sima.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3ade^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sima.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0de^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`sima.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20de^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`sima.ns.cloudflare.com`
		A	108.162.192.222^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sima.ns.cloudflare.com`
		A	172.64.32.222^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sima.ns.cloudflare.com`
		A	173.245.58.222^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sima.ns.cloudflare.com`
NS	`sterling.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c8f^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sterling.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c38f^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`sterling.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:238f^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`sterling.ns.cloudflare.com`
		A	108.162.195.143^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sterling.ns.cloudflare.com`
		A	162.159.44.143^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sterling.ns.cloudflare.com`
		A	172.64.35.143^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sterling.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.75.116, 172.67.222.206
		IPv6 hints	2606:4700:3034::6815:4b74, 2606:4700:3034::ac43:dece
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=116, name=cloudflare-ech.com
SOA	`sima.ns.cloudflare.com`dns@cloudflare.com serial=2406310509

`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=1782614585

Same first word

21f2.com

Similar names

221f.ru

f122.com.br

f221.com

212f.com.au

f122.cc

212f.wpmudev.host

212f.net

212f.by

DNS History

6 records (6 active, 0 former)

●NSsima.ns.cloudflare.com2026-03-05 → 2026-06-28 · 2 obs

● 2026-03-05 09:13:48
● 2026-06-28 03:03:10

●NSsterling.ns.cloudflare.com2026-03-05 → 2026-06-28 · 2 obs

● 2026-03-05 09:13:48
● 2026-06-28 03:03:10

●A104.21.75.1162026-03-05 → 2026-06-28 · 2 obs

● 2026-03-05 09:13:48
● 2026-06-28 03:03:10

●A172.67.222.2062026-03-05 → 2026-06-28 · 2 obs

● 2026-03-05 09:13:48
● 2026-06-28 03:03:10

●A2606:4700:3034::6815:4b742026-03-05 → 2026-06-28 · 2 obs

● 2026-03-05 09:13:48
● 2026-06-28 03:03:10

●A2606:4700:3034::ac43:dece2026-03-05 → 2026-06-28 · 2 obs

● 2026-03-05 09:13:48
● 2026-06-28 03:03:10

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
21f2.com	sima.ns.cloudflare.com, sterling.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.222

NS records: sima.ns.cloudflare.com, sterling.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 21f2.com (unsigned zone)

⏱️ Timing

Total: 268ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.222.206, 104.21.75.116`
AAAA	2	`2606:4700:3034::ac43:dece, 2606:4700:3034::6815:4b74`
NS	2	`sima.ns.cloudflare.com, sterling.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`sima.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

21f2.com directs to four IP numbers, which are 104.21.75.116, 172.67.222.206, 2606:4700:3034::6815:4b74 and 2606:4700:3034::ac43:dece.

Additional host names — rsgold.com.tw, s3.ephoto360.com, maquinariaparaenvasado.com and two others — share IP numbers with 21f2.com.

Name Servers

Two name servers handle the delegation for 21f2.com: sima.ns.cloudflare.com and sterling.ns.cloudflare.com.

21f2.com shares its name server setup with other domains, including 8b3e.com, 847c55.com, 2535c5.com and two others.

There is at least partial name server overlap between 21f2.com and other domains — sleepy.eu, metauman.com, busanslotid.ink and two more among them.

The name servers opal.ns.cloudflare.com, kim.ns.cloudflare.com and owen.ns.cloudflare.com are often found in combination with these name servers.

Host names with 6 IP numbers:

sima.ns.cloudflare.com resolves to 108.162.192.222, 172.64.32.222 and 173.245.58.222 among others, with 3 other IP addresses in total.

sterling.ns.cloudflare.com resolves to 108.162.195.143, 162.159.44.143 and 172.64.35.143 among others, with 3 other IP addresses in total.