21doc.com - dns.ninja

`21doc.com`

DNSSEC	⚠️ Not signed
A	38.48.201.112^{🇺🇸 AS39882338.48.192.0/18}
NS	`alina.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a3d^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alina.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c03d^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`alina.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:203d^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`alina.ns.cloudflare.com`
		A	108.162.192.61^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alina.ns.cloudflare.com`
		A	172.64.32.61^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alina.ns.cloudflare.com`
		A	173.245.58.61^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alina.ns.cloudflare.com`
NS	`lennon.ns.cloudflare.com`
		A	2606:4700:58::a29f:2ca5^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lennon.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3a5^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`lennon.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23a5^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`lennon.ns.cloudflare.com`
		A	108.162.195.165^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lennon.ns.cloudflare.com`
		A	162.159.44.165^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lennon.ns.cloudflare.com`
		A	172.64.35.165^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lennon.ns.cloudflare.com`
SOA	`alina.ns.cloudflare.com`dns@cloudflare.com serial=2406616000

`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=1783270926

Subdomains

www.21doc.com

Same first word

21doc.com

21doc.net

Similar names

cdo12.ru

cod12.top

doc12.ru

cod12.com

21dco.com

doc12.com

cod21.com

cod12.win

DNS History

9 records (3 active, 6 former)

●NSalina.ns.cloudflare.com2026-03-26 → 2026-07-05 · 3 obs

○ 2020-01-27 12:50:04
● 2026-03-26 05:28:32
● 2026-07-05 17:02:16

○NSjm1.dns.com2020-01-27 → 2020-01-27 · 4 obs

○ 2016-12-25 01:08:18
● 2020-01-27 12:50:04
○ 2026-03-26 05:28:32
○ 2026-07-05 17:02:16

○NSjm2.dns.com2020-01-27 → 2020-01-27 · 4 obs

○ 2016-12-25 01:08:18
● 2020-01-27 12:50:04
○ 2026-03-26 05:28:32
○ 2026-07-05 17:02:16

○NSjuming.dnsdun.com2016-01-05 → 2016-12-25 · 4 obs

● 2016-01-05 00:24:56
● 2016-12-25 01:08:18
○ 2020-01-27 12:50:04
○ 2026-07-05 17:02:16

○NSjuming.dnsdun.net2016-12-25 → 2016-12-25 · 4 obs

○ 2016-01-05 00:24:56
● 2016-12-25 01:08:18
○ 2020-01-27 12:50:04
○ 2026-07-05 17:02:16

●NSlennon.ns.cloudflare.com2026-03-26 → 2026-07-05 · 3 obs

○ 2020-01-27 12:50:04
● 2026-03-26 05:28:32
● 2026-07-05 17:02:16

○A23.105.73.1502016-12-25 → 2016-12-25 · 3 obs

● 2016-12-25 01:08:18
○ 2020-01-27 12:50:04
○ 2026-07-05 17:02:16

●A38.48.201.1122026-03-26 → 2026-07-05 · 3 obs

○ 2020-01-27 12:50:04
● 2026-03-26 05:28:32
● 2026-07-05 17:02:16

○A45.78.64.552020-01-27 → 2020-01-27 · 4 obs

○ 2016-12-25 01:08:18
● 2020-01-27 12:50:04
○ 2026-03-26 05:28:32
○ 2026-07-05 17:02:16

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
21doc.com	alina.ns.cloudflare.com, lennon.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.195.165

NS records: alina.ns.cloudflare.com, lennon.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

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

⏱️ Timing

Total: 185ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`38.48.201.112`
NS	2	`alina.ns.cloudflare.com, lennon.ns.cloudflare.com`
SOA	1	`alina.ns.cloudflare.com dns.cloudflare.c`

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

www.21doc.com is delegated beneath 21doc.com.

IP Addresses

21doc.com has exactly one IP address — 38.48.201.112.

The host names www.21doc.com, amerisyn.com, bloodbank-tu.com and xdjyj.com all share IP numbers with 21doc.com.

Name Servers

DNS delegation for 21doc.com points to two name servers: alina.ns.cloudflare.com and lennon.ns.cloudflare.com.

The name server configuration of 21doc.com is shared with other domains, for instance skyebyrd.com, drawskin.com, china123456.com and two others.

There is at least partial name server overlap between 21doc.com and other domains — 35585.cn, inlimine.org, absolutefirepro.com and two more among them.

These name servers frequently co-occur with the name servers curt.ns.cloudflare.com and elisabeth.ns.cloudflare.com.

Hosts with 6 IP addresses each:

alina.ns.cloudflare.com has IP addresses 108.162.192.61, 172.64.32.61 and 173.245.58.61, plus 3 other.

lennon.ns.cloudflare.com has IP addresses 108.162.195.165, 162.159.44.165 and 172.64.35.165, plus 3 other.