doublecheckthat.com - dns.ninja

doublecheckthat.com

DNSSEC⚠️ Not signed
A2606:4700:4409::6812:2b89🇺🇸 Cloudflare2606:4700:4409::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2a06:98c1:310b::ac40:9077🇺🇸 Cloudflare2a06:98c1:310b::/48 ✓ In HTTPS hints
A104.18.43.137Cloudflare104.18.43.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.64.144.119🇺🇸 Cloudflare172.64.144.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSirma.ns.cloudflare.com ⭐
A2606:4700:50::adf5:3aa6🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRirma.ns.cloudflare.com
A2803:f800:50::6ca2:c0a6🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRirma.ns.cloudflare.com
A2a06:98c1:50::ac40:20a6🇺🇸 Cloudflare2a06:98c1:50::/45
PTRirma.ns.cloudflare.com
A108.162.192.166🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
A172.64.32.166🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
A173.245.58.166🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
NSnitin.ns.cloudflare.com
A2606:4700:58::adf5:3bd7🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRnitin.ns.cloudflare.com
A2803:f800:50::6ca2:c1d7🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRnitin.ns.cloudflare.com
A2a06:98c1:50::ac40:21d7🇺🇸 Cloudflare2a06:98c1:50::/45
PTRnitin.ns.cloudflare.com
A108.162.193.215🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRnitin.ns.cloudflare.com
A172.64.33.215🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRnitin.ns.cloudflare.com
A173.245.59.215🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRnitin.ns.cloudflare.com
TXTv=spf1 -all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.18.43.137, 172.64.144.119
IPv6 hints2606:4700:4409::6812:2b89, 2a06:98c1:310b::ac40:9077
SOAirma.ns.cloudflare.comdns@cloudflare.com serial=2409643714

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1785398847

Same first word

doublecheckthat.com

DNS History

13 records (6 active, 7 former)

2017201820192020202120222023202420252026NSirma.ns.cloudflare.comnitin.ns.cloudflare.comns1dhq.name.comns2bls.name.comns3jkl.name.comns4cpw.name.comA104.18.43.137172.64.144.1192606:4700:4409::6812:2b892a06:98c1:310b::ac40:90772a06:98c1:3102::ac40:90772a06:98c1:3106::6812:2b8969.64.147.242
●NSirma.ns.cloudflare.com2026-04-07 → 2026-07-30 · 3 obs
○ 2017-08-19 20:18:40
● 2026-04-07 18:21:46
● 2026-07-30 08:16:50
●NSnitin.ns.cloudflare.com2026-04-07 → 2026-07-30 · 3 obs
○ 2017-08-19 20:18:40
● 2026-04-07 18:21:46
● 2026-07-30 08:16:50
○NSns1dhq.name.com2017-08-19 → 2017-08-19 · 3 obs
● 2017-08-19 20:18:40
○ 2026-04-07 18:21:46
○ 2026-07-30 08:16:50
○NSns2bls.name.com2017-08-19 → 2017-08-19 · 3 obs
● 2017-08-19 20:18:40
○ 2026-04-07 18:21:46
○ 2026-07-30 08:16:50
○NSns3jkl.name.com2017-08-19 → 2017-08-19 · 3 obs
● 2017-08-19 20:18:40
○ 2026-04-07 18:21:46
○ 2026-07-30 08:16:50
○NSns4cpw.name.com2017-08-19 → 2017-08-19 · 3 obs
● 2017-08-19 20:18:40
○ 2026-04-07 18:21:46
○ 2026-07-30 08:16:50
●A104.18.43.1372026-04-07 → 2026-07-30 · 3 obs
○ 2017-08-19 20:18:40
● 2026-04-07 18:21:46
● 2026-07-30 08:16:50
●A172.64.144.1192026-04-07 → 2026-07-30 · 3 obs
○ 2017-08-19 20:18:40
● 2026-04-07 18:21:46
● 2026-07-30 08:16:50
●A2606:4700:4409::6812:2b892026-06-29 → 2026-07-30 · 3 obs
○ 2026-04-07 18:21:46
● 2026-06-29 14:10:32
● 2026-07-30 08:16:50
○A2a06:98c1:3102::ac40:90772026-04-07 → 2026-04-07 · 4 obs
○ 2017-08-19 20:18:40
● 2026-04-07 18:21:46
○ 2026-06-29 14:10:32
○ 2026-07-30 08:16:50
○A2a06:98c1:3106::6812:2b892026-04-07 → 2026-04-07 · 4 obs
○ 2017-08-19 20:18:40
● 2026-04-07 18:21:46
○ 2026-06-29 14:10:32
○ 2026-07-30 08:16:50
●A2a06:98c1:310b::ac40:90772026-06-29 → 2026-07-30 · 3 obs
○ 2026-04-07 18:21:46
● 2026-06-29 14:10:32
● 2026-07-30 08:16:50
○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
○ 2026-07-30 08:16:50

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, j.gtld-servers.net, d.gtld-servers.net, l.gtld-servers.net...-
doublecheckthat.comnitin.ns.cloudflare.com, irma.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.193.215

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: 172ms | Queries: -

📄 Records

TypeCountSample Data
A2172.64.144.119, 104.18.43.137
AAAA22a06:98c1:310b::ac40:9077, 2606:4700:4409::6812:2b89
NS2irma.ns.cloudflare.com, nitin.ns.cloudflare.com
TXT1v=spf1 -all
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1irma.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 has four IP addresses: 104.18.43.137, 172.64.144.119, 2606:4700:4409::6812:2b89 and 2a06:98c1:310b::ac40:9077.

isp.qzz.io, testbeddandomainstage1mssql.goldennugget.com, goeuro.cz plus two other host names have IP numbers in common with doublecheckthat.com.

Name Servers

doublecheckthat.com has two authoritative name servers — irma.ns.cloudflare.com and nitin.ns.cloudflare.com.

The name server configuration of doublecheckthat.com is shared with other domains, for instance indeed.no, lovemondays.com.pe, glassdoor.com.hk and two others.

doublecheckthat.com partially shares its NS delegation with several other domains, including pxlearning.com, sru-systems.com, mindfield.co and two others.

These name servers are regularly seen alongside cass.ns.cloudflare.com and sam.ns.cloudflare.com as name servers.

Hosts with 6 IP addresses each:

irma.ns.cloudflare.com points to 108.162.192.166, 172.64.32.166, 173.245.58.166 and 3 other IP addresses.

nitin.ns.cloudflare.com points to 108.162.193.215, 172.64.33.215, 173.245.59.215 and 3 other IP addresses.