duplicatecheck.com - dns.ninja

`duplicatecheck.com`

DNSSEC	⚠️ Not signed
A	34.71.13.202^{🇺🇸 Google34.71.0.0/20}
		PTR	`202.13.71.34.bc.googleusercontent.com`
NS	`lisa.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a83^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lisa.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c083^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`lisa.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2083^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`lisa.ns.cloudflare.com`
		A	108.162.192.131^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lisa.ns.cloudflare.com`
		A	172.64.32.131^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lisa.ns.cloudflare.com`
		A	173.245.58.131^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lisa.ns.cloudflare.com`
NS	`matt.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b83^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`matt.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c183^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`matt.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2183^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`matt.ns.cloudflare.com`
		A	108.162.193.131^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`matt.ns.cloudflare.com`
		A	172.64.33.131^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`matt.ns.cloudflare.com`
		A	173.245.59.131^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`matt.ns.cloudflare.com`
MX	`duplicatecheck-com.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:ca04::^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db3pr0202cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::4^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-am0pr04cu00504.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::6^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-am4pr0401cu00106.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::d^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-as9pr05cu01305.inbound.protection.outlook.com`
		A	52.101.68.5^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-du2pr03cu00105.inbound.protection.outlook.com`
		A	52.101.68.8^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-du0pr03cu00100.inbound.protection.outlook.com`
		A	52.101.73.1^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am3pr04cu00501.inbound.protection.outlook.com`
		A	52.101.73.19^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-as8pr04cu00803.inbound.protection.outlook.com`
TXT	`MS=ms30166146`
TXT	`MS=ms44398789`
TXT	`google-site-verification=60A5hZTCfqZw23ppMb_lPqPRc2NcvredKATsYMPBntU`
TXT	`google-site-verification=C12m7EExU-NUHysWsDtXmbpNxvV170nrlkv0yCk-fFY`
TXT	`google-site-verification=c5KWXVY5V3MV-FLY73XqIxtVW7-TtfrwBnah0qByA6k`
TXT	`p-ic-hosting-shared-wa-plauti-website.azurewebsites.net`
TXT	`v=spf1 a include:spf.protection.outlook.com include:aspmx.pardot.com include:...`
SOA	`lisa.ns.cloudflare.com`dns@cloudflare.com serial=2406964848

`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=1785978584

Subdomains

www.duplicatecheck.com

Same first word

duplicatecheck.com

DNS History

20 records (4 active, 16 former)

●NSlisa.ns.cloudflare.com2019-03-30 → 2026-08-06 · 3 obs

○ 2017-02-09 19:58:20
● 2019-03-30 18:44:42
● 2026-08-06 01:24:38

●NSmatt.ns.cloudflare.com2019-03-30 → 2026-08-06 · 3 obs

○ 2017-02-09 19:58:20
● 2019-03-30 18:44:42
● 2026-08-06 01:24:38

○NSns0.transip.net2015-06-20 → 2017-02-09 · 5 obs

○ 2008-03-16 11:01:14
● 2015-06-20 00:48:58
● 2017-02-09 19:58:20
○ 2019-03-30 18:44:42
○ 2026-08-06 01:24:38

○NSns1.transip.nl2015-06-20 → 2017-02-09 · 5 obs

○ 2008-03-16 11:01:14
● 2015-06-20 00:48:58
● 2017-02-09 19:58:20
○ 2019-03-30 18:44:42
○ 2026-08-06 01:24:38

○NSns2.transip.eu2015-06-20 → 2017-02-09 · 5 obs

○ 2008-03-16 11:01:14
● 2015-06-20 00:48:58
● 2017-02-09 19:58:20
○ 2019-03-30 18:44:42
○ 2026-08-06 01:24:38

○NSns43.domaincontrol.com2008-03-16 → 2008-03-16 · 3 obs

● 2008-03-16 11:01:14
○ 2015-06-20 00:48:58
○ 2026-08-06 01:24:38

○NSns44.domaincontrol.com2008-03-16 → 2008-03-16 · 3 obs

● 2008-03-16 11:01:14
○ 2015-06-20 00:48:58
○ 2026-08-06 01:24:38

○MXalt1.aspmx.l.google.com2015-06-20 → 2017-02-09 · 5 obs

○ 2008-03-16 11:01:14
● 2015-06-20 00:48:58
● 2017-02-09 19:58:20
○ 2019-03-30 18:44:42
○ 2026-08-06 01:24:38

○MXalt2.aspmx.l.google.com2015-06-20 → 2017-02-09 · 5 obs

○ 2008-03-16 11:01:14
● 2015-06-20 00:48:58
● 2017-02-09 19:58:20
○ 2019-03-30 18:44:42
○ 2026-08-06 01:24:38

○MXaspmx.l.google.com2015-06-20 → 2017-02-09 · 5 obs

○ 2008-03-16 11:01:14
● 2015-06-20 00:48:58
● 2017-02-09 19:58:20
○ 2019-03-30 18:44:42
○ 2026-08-06 01:24:38

○MXaspmx2.googlemail.com2015-06-20 → 2017-02-09 · 5 obs

○ 2008-03-16 11:01:14
● 2015-06-20 00:48:58
● 2017-02-09 19:58:20
○ 2019-03-30 18:44:42
○ 2026-08-06 01:24:38

○MXaspmx3.googlemail.com2015-06-20 → 2017-02-09 · 5 obs

○ 2008-03-16 11:01:14
● 2015-06-20 00:48:58
● 2017-02-09 19:58:20
○ 2019-03-30 18:44:42
○ 2026-08-06 01:24:38

●MXduplicatecheck-com.mail.protection.outlook.com2019-03-30 → 2026-08-06 · 3 obs

○ 2017-02-09 19:58:20
● 2019-03-30 18:44:42
● 2026-08-06 01:24:38

○MXmailstore1.secureserver.net2008-03-16 → 2008-03-16 · 3 obs

● 2008-03-16 11:01:14
○ 2015-06-20 00:48:58
○ 2026-08-06 01:24:38

○MXsmtp.secureserver.net2008-03-16 → 2008-03-16 · 3 obs

● 2008-03-16 11:01:14
○ 2015-06-20 00:48:58
○ 2026-08-06 01:24:38

○A149.210.198.2362015-06-20 → 2016-06-21 · 5 obs

○ 2008-03-16 11:01:14
● 2015-06-20 00:48:58
● 2016-06-21 01:14:42
○ 2017-02-09 19:58:20
○ 2026-08-06 01:24:38

○A208.109.181.1512008-03-16 → 2008-03-16 · 3 obs

● 2008-03-16 11:01:14
○ 2015-06-20 00:48:58
○ 2026-08-06 01:24:38

●A34.71.13.2022026-02-16 → 2026-08-06 · 3 obs

○ 2019-03-30 18:44:42
● 2026-02-16 12:56:30
● 2026-08-06 01:24:38

○A37.97.206.1352017-02-09 → 2017-02-09 · 4 obs

○ 2016-06-21 01:14:42
● 2017-02-09 19:58:20
○ 2019-03-30 18:44:42
○ 2026-08-06 01:24:38

○A52.233.155.1682019-03-30 → 2019-03-30 · 4 obs

○ 2017-02-09 19:58:20
● 2019-03-30 18:44:42
○ 2026-02-16 12:56:30
○ 2026-08-06 01:24:38

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
duplicatecheck.com	lisa.ns.cloudflare.com, matt.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.131

NS records: lisa.ns.cloudflare.com, matt.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for duplicatecheck.com (unsigned zone)

⏱️ Timing

Total: 207ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`34.71.13.202`
NS	2	`lisa.ns.cloudflare.com, matt.ns.cloudflare.com`
MX	1	`duplicatecheck-com.mail.protection.outlo`
TXT	7	`MS=ms30166146, MS=ms44398789...`
SOA	1	`lisa.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

duplicatecheck.com serves as the parent of www.duplicatecheck.com.

IP Addresses

duplicatecheck.com resolves to just one IP address, 34.71.13.202.

Two other host names, along with www.recordvalidation.com, www.duplicatecheck.com and recordvalidation.com, also share IP numbers with duplicatecheck.com.

Name Servers

Two name servers handle the delegation for duplicatecheck.com: lisa.ns.cloudflare.com and matt.ns.cloudflare.com.

duplicatecheck.com shares its NS records with other domains, for example fundacionsermes.org, munfa.ca, mobiofficesync.com and two others.

duplicatecheck.com has at least partial name server overlap with other domains, such as cci.digital, jaama.co.uk, fmo.org.hk and two others.

It is common to find these name servers paired with the name servers ken.ns.cloudflare.com.

DNS names with 6 IP addresses:

lisa.ns.cloudflare.com resolves to 108.162.192.131, 172.64.32.131 and 173.245.58.131 among others, with 3 other IP addresses in total.

matt.ns.cloudflare.com resolves to 108.162.193.131, 172.64.33.131 and 173.245.59.131 among others, with 3 other IP addresses in total.

Mail Servers

The sole mail server for duplicatecheck.com is duplicatecheck-com.mail.protection.outlook.com.

With 8 IP addresses total, duplicatecheck-com.mail.protection.outlook.com resolves to 52.101.68.5, 52.101.68.8, 52.101.73.1 and 5 others.