`api.questdiagnostics.com`

DNSSEC	⚠️ Not signed
A	137.135.122.78^{🇺🇸 Microsoft137.135.0.0/16 MICROSOFT}
NS	`ib-grid.qdx.com` ⭐
NS	`ns1.questdiagnostics.com` ⚠️ Not in parent delegation
		A	216.203.80.72^{🇺🇸 AS27021216.203.80.0/24}
			PTR	`ns1.questdiagnostics.com`
NS	`ns11.questdiagnostics.com` ⚠️ Not in parent delegation
		A	216.203.95.72^{🇺🇸 AS27021216.203.92.0/22}
			PTR	`ns11.questdiagnostics.com`
NS	`ns12.questdiagnostics.com` ⚠️ Not in parent delegation
		A	216.203.95.73^{🇺🇸 AS27021216.203.92.0/22}
			PTR	`ns12.questdiagnostics.com`
NS	`ns3.questdiagnostics.com` ⚠️ Not in parent delegation
		A	216.203.80.73^{🇺🇸 AS27021216.203.80.0/24}
			PTR	`ns3.questdiagnostics.com`
SOA	`ib-grid.qdx.com`please_set_email@absolutely.nowhere serial=10

`questdiagnostics.com`

	DNSSEC	⚠️ Not signed
	A	52.232.227.90^{🇺🇸 Microsoft52.224.0.0/11 MICROSOFT}
	NS	`ib-grid.qdx.com` ⭐
	NS	`ns1.questdiagnostics.com`
	NS	`ns11.questdiagnostics.com`
	NS	`ns12.questdiagnostics.com`
	NS	`ns3.questdiagnostics.com`
	MX	`cluster4.us.messagelabs.com` ⭐
	MX	`cluster4a.us.messagelabs.com`⁽²⁰⁾
	TXT	`sprout-social-76982269-3fdf-46af-8bac-a82fe22088c4`
	TXT	`MS=ms67858035`
	TXT	`MS=ms11058552`
	TXT	`QxDTDTWFa4pJugxQutyqb5BFYH0fO0d6gmB9z56NVoS+ifN8ab0eGMOD24M4gm5uuxv95Fr4Y/2GO...`
	TXT	`google-site-verification=zPaAV3wZTYaXQs-LfFFDJqw6ZOK7Ky0kgDTJw1hXWlU`
	TXT	`docusign=8af2e051-c6e0-40bd-898b-e8aa1c421f20`
	TXT	`docusign=bd264cc9-688a-441b-87db-85c39dabd4ef`
	TXT	`TBj6xlrJxda242StL4v+Kl4zWcq2BxJoJLHShDmdee0o4ESx0LQTib3JlRsPbNX9BnEm0mQe4jaNv...`
	TXT	`adobe-idp-site-verification=7f64bf40e9628296979cf87278218eaf685fda6fa67383a33...`
	TXT	`google-site-verification=JV7NOkJf5i7c0BxvP45nMnlsTXnBmYrZ2PDi3lbJ_so`
	TXT	`Dynatrace-site-verification=a020fcd7-82c4-4895-9f2c-cfae793f32ef__4k18p905dd3...`
	TXT	`onetrust-domain-verification=da2f0baa1e2e4fa9a82946ab0f3942b5`
	TXT	`v=spf1 include:spf1.questdiagnostics.com include:spf2.questdiagnostics.com -all`
	TXT	`onetrust-domain-verification=cb03b5348d554fcaa5347e773c44a5e5`
	TXT	`apple-domain-verification=nruWP4efHrYigBPK`
	TXT	`apple-domain-verification=uEk1tgx5xbOx6a57`
	TXT	`apple-domain-verification=v0VinpOytrD9ogvn`
	TXT	`smartsheet-site-validation=GGJZAr-N8O-eWaTT5yIFQk5NjdifUDSA`
	TXT	`amazonses:8rS7RoawNHHT51o0WBfCMOHwGcjFTZ9uKw/Wwr/O0QI=`
	TXT	`intersight=49a6f7a9e25781b50bb7b57010fc4d6818daed0842640a345a297ffab7518bea`
	TXT	`wiz-domain-verification=abcdef1234567890abcdef1234567890abcdef1234567890`
	TXT	`onetrust-domain-verification=9d1493407dfb45b2bc4d8e6d3119a654`
	TXT	`atlassian-domain-verification=hUoLqwVkin8T0OLIrlGxBE77X4GiJ26a/6folkY0p6QDZHM...`
	TXT	`stripe-verification=0e7043ca67014a07cc4ecf3b6a2a77514bb7124a2a6647013c74c472c...`
	TXT	`AbCH3t0TUzvhxBIZWJvE8a+C2ys6G6kCJxloMB++7IiXwxN3il0wD1vJXBPaeoOoiIYj8vK1ftDsS...`
	TXT	`google-site-verification=syvsJQGGFWV1iQV3e5hWQhLZgbT-dJDhCd_EdzzH29I`
	TXT	`google-gws-recovery-domain-verification=54850844`
	TXT	`cisco-ci-domain-verification=9137245383a361d235028354c49aec77c545c300a71af9f0...`
	TXT
	TXT	`_rzkn3d6optr8v1tcx01lpk5g1fyrmsj`
	TXT	`_qzzhmqm33t6j43ns1q9pw4es7zehx7c`
	TXT	`teamviewer-sso-verification=ece4aaed3aad43719274437c5b8613ac`
	TXT	`mixpanel-domain-verify=cfcc7595-8be5-4760-9470-c975bf60c567`
	TXT	`_6j15caqw6shvh4xyg1ue593uqbawpn7`
	SOA	`ib-grid.qdx.com`domain-tech@questdiagnostics.com serial=2019014194

WOT: SAFE (91/100)
rank #14041 globally
rank #6939 in the tld
WOT: SAFE (91/100)
📈 Tranco rank: #12,761

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DNS History

6 records (6 active, 0 former)

●NSib-grid.qdx.com2026-02-25 → 2026-04-23 · 2 obs

● 2026-02-25 23:37:40
● 2026-04-23 22:39:10

●NSns1.questdiagnostics.com2026-02-25 → 2026-04-23 · 2 obs

● 2026-02-25 23:37:40
● 2026-04-23 22:39:10

●NSns11.questdiagnostics.com2026-02-25 → 2026-04-23 · 2 obs

● 2026-02-25 23:37:40
● 2026-04-23 22:39:10

●NSns12.questdiagnostics.com2026-02-25 → 2026-04-23 · 2 obs

● 2026-02-25 23:37:40
● 2026-04-23 22:39:10

●NSns3.questdiagnostics.com2026-02-25 → 2026-04-23 · 2 obs

● 2026-02-25 23:37:40
● 2026-04-23 22:39:10

●A137.135.122.782019-12-24 → 2026-04-23 · 2 obs

● 2019-12-24 18:46:28
● 2026-04-23 22:39:10

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
questdiagnostics.com	ns1.questdiagnostics.com, ns3.questdiagnostics.com, ns11.questdiagnostics.com, ns12.questdiagnostics.com	4 records

✅ Authoritative Response

Server:216.203.83.234

NS records: ns1.questdiagnostics.com, ns3.questdiagnostics.com, ns11.questdiagnostics.com, ns12.questdiagnostics.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for questdiagnostics.com (unsigned zone)

⏱️ Timing

Total: 212ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`137.135.122.78`
NS	4	`ns12.questdiagnostics.com, ns11.questdiagnostics.com...`
SOA	1	`ib-grid.qdx.com please_set_email.absolut`

📌 Glue Records Collected

Total: 4

In-bailiwick: 4 (ns1.questdiagnostics.com, ns3.questdiagnostics.com, ns11.questdiagnostics.com...)

Analysis

IP Addresses

api.questdiagnostics.com resolves to one IP number: 137.135.122.78.

Name Servers

api.questdiagnostics.com is delegated to five name servers: ib-grid.qdx.com, ns11.questdiagnostics.com, ns12.questdiagnostics.com, ns1.questdiagnostics.com and ns3.questdiagnostics.com.

api.questdiagnostics.com at least partially shares name servers with other domains, for instance care360direct.com, swschptesting.com, 253.242.209.in-addr.arpa, sedlabs.com and getcare360.org.

these name servers are commonly used alongside ns2.questdiagnostics.com.

Host names with one IP number: ns11.questdiagnostics.com points to 216.203.95.72; ns12.questdiagnostics.com points to 216.203.95.73; ns1.questdiagnostics.com points to 216.203.80.72; ns3.questdiagnostics.com points to 216.203.80.73.

api.questdiagnostics.com - robtex.com