`doublecheckthat.com`

DNSSEC	⚠️ Not signed
A	2a06:98c1:3102::ac40:9077^{🇺🇸 Cloudflare2a06:98c1:3102::/48} ✓ In HTTPS hints
A	2a06:98c1:3106::6812:2b89^{🇺🇸 Cloudflare2a06:98c1:3106::/48} ✓ In HTTPS hints
A	104.18.43.137^{Cloudflare104.18.43.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.64.144.119^{🇺🇸 Cloudflare172.64.144.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`irma.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3aa6^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`irma.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0a6^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`irma.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20a6^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`irma.ns.cloudflare.com`
		A	108.162.192.166^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`irma.ns.cloudflare.com`
		A	172.64.32.166^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`irma.ns.cloudflare.com`
		A	173.245.58.166^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`irma.ns.cloudflare.com`
NS	`nitin.ns.cloudflare.com`
		A	2606:4700:58::adf5:3bd7^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nitin.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1d7^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`nitin.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21d7^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`nitin.ns.cloudflare.com`
		A	108.162.193.215^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nitin.ns.cloudflare.com`
		A	172.64.33.215^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nitin.ns.cloudflare.com`
		A	173.245.59.215^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nitin.ns.cloudflare.com`
TXT	`v=spf1 -all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.18.43.137, 172.64.144.119
		IPv6 hints	2a06:98c1:3102::ac40:9077, 2a06:98c1:3106::6812:2b89
SOA	`irma.ns.cloudflare.com`dns@cloudflare.com serial=2401349306

`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=1776209442

Same first word

doublecheckthat.com

DNS History

11 records (6 active, 5 former)

●NSirma.ns.cloudflare.com2026-04-07 → 2026-04-14 · 3 obs

○ 2017-08-19 20:18:40
● 2026-04-07 18:21:46
● 2026-04-14 23:50:04

●NSnitin.ns.cloudflare.com2026-04-07 → 2026-04-14 · 3 obs

○ 2017-08-19 20:18:40
● 2026-04-07 18:21:46
● 2026-04-14 23:50:04

○NSns1dhq.name.com2017-08-19 → 2017-08-19 · 3 obs

● 2017-08-19 20:18:40
○ 2026-04-07 18:21:46
○ 2026-04-14 23:50:04

○NSns2bls.name.com2017-08-19 → 2017-08-19 · 3 obs

● 2017-08-19 20:18:40
○ 2026-04-07 18:21:46
○ 2026-04-14 23:50:04

○NSns3jkl.name.com2017-08-19 → 2017-08-19 · 3 obs

● 2017-08-19 20:18:40
○ 2026-04-07 18:21:46
○ 2026-04-14 23:50:04

○NSns4cpw.name.com2017-08-19 → 2017-08-19 · 3 obs

● 2017-08-19 20:18:40
○ 2026-04-07 18:21:46
○ 2026-04-14 23:50:04

●A104.18.43.1372026-04-07 → 2026-04-14 · 3 obs

○ 2017-08-19 20:18:40
● 2026-04-07 18:21:46
● 2026-04-14 23:50:04

●A172.64.144.1192026-04-07 → 2026-04-14 · 3 obs

○ 2017-08-19 20:18:40
● 2026-04-07 18:21:46
● 2026-04-14 23:50:04

●A2a06:98c1:3102::ac40:90772026-04-07 → 2026-04-14 · 3 obs

○ 2017-08-19 20:18:40
● 2026-04-07 18:21:46
● 2026-04-14 23:50:04

●A2a06:98c1:3106::6812:2b892026-04-07 → 2026-04-14 · 3 obs

○ 2017-08-19 20:18:40
● 2026-04-07 18:21:46
● 2026-04-14 23:50:04

○A69.64.147.2422016-12-17 → 2017-08-19 · 4 obs

● 2016-12-17 04:28:28
● 2017-08-19 20:18:40
○ 2026-04-07 18:21:46
○ 2026-04-14 23:50:04

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, d.gtld-servers.net, b.gtld-servers.net, h.gtld-servers.net...	-
doublecheckthat.com	nitin.ns.cloudflare.com, irma.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.166

NS records: nitin.ns.cloudflare.com, irma.ns.cloudflare.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 178ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.64.144.119, 104.18.43.137`
AAAA	2	`2a06:98c1:3106::6812:2b89, 2a06:98c1:3102::ac40:9077`
NS	2	`irma.ns.cloudflare.com, nitin.ns.cloudflare.com`
TXT	1	`v=spf1 -all`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`irma.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

doublecheckthat.com points to four IP numbers: 2a06:98c1:3102::ac40:9077, 2a06:98c1:3106::6812:2b89, 104.18.43.137 and 172.64.144.119.

For instance, other host names goeuro.cz, ja.kroll.com, www.kroll.com, www.bursamalaysia.com.my and www.goeuro.cz share IP numbers with doublecheckthat.com.

Name Servers

doublecheckthat.com is delegated to two name servers: irma.ns.cloudflare.com and nitin.ns.cloudflare.com.

doublecheckthat.com uses the same name server setup as other domains such as indeed.no, seenindeed.com, indeedskills.com, jobska.com and indeedstaffingservices.com.

doublecheckthat.com shares name servers with other domains at least partially, for example sru-systems.com, mindfield.co, esatech.com.tr, ag6372.com and baiteman.com.

These name servers are commonly used with the name servers cass.ns.cloudflare.com and sam.ns.cloudflare.com.

Host names with six IP numbers: host name irma.ns.cloudflare.com points to: 2606:4700:50::adf5:3aa6, 2803:f800:50::6ca2:c0a6, 2a06:98c1:50::ac40:20a6, 108.162.192.166, 172.64.32.166 and 173.245.58.166; host name nitin.ns.cloudflare.com points to: 2606:4700:58::adf5:3bd7, 2803:f800:50::6ca2:c1d7, 2a06:98c1:50::ac40:21d7, 108.162.193.215, 172.64.33.215 and 173.245.59.215.

doublecheckthat.com - robtex.com