referenceintervals.com - dns.ninja

🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`referenceintervals.com`

DNSSEC	⚠️ Not signed
NS	`ns3.sickkids.ca` ⭐
		A	142.20.20.140^{🇨🇦 THE HOSPITAL FOR SICK CHILDREN142.20.0.0/16 The Hospital for Sick Children 555 University Avenue Toronto ON M5G-1X8 Canada}
			PTR	`ns3.sickkids.ca`
NS	`ns4.sickkids.ca`
		A	142.20.20.141^{🇨🇦 THE HOSPITAL FOR SICK CHILDREN142.20.0.0/16 The Hospital for Sick Children 555 University Avenue Toronto ON M5G-1X8 Canada}
			PTR	`ns4.sickkids.ca`
SOA	`ns3.sickkids.ca`postmaster@sickkids.ca serial=4

`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=1791735619

Same first word

referenceintervals.com

referenceintervals.org

Previous names

Next names

DNS History

13 records (2 active, 11 former)

○NSns01.referenceintervals.com2015-11-02 → 2016-04-10 · 5 obs

○ 2015-06-05 19:40:04
● 2015-11-02 14:42:58
● 2016-04-10 09:09:10
○ 2016-10-24 11:48:56
○ 2026-10-11 16:47:10

○NSns01.research.sickkids.ca2015-11-02 → 2016-04-10 · 5 obs

○ 2015-06-05 19:40:04
● 2015-11-02 14:42:58
● 2016-04-10 09:09:10
○ 2016-10-24 11:48:56
○ 2026-10-11 16:47:10

○NSns03.referenceintervals.com2015-11-02 → 2016-04-10 · 5 obs

○ 2015-06-05 19:40:04
● 2015-11-02 14:42:58
● 2016-04-10 09:09:10
○ 2016-10-24 11:48:56
○ 2026-10-11 16:47:10

○NSns1.netfirms.com2015-06-05 → 2015-06-05 · 3 obs

● 2015-06-05 19:40:04
○ 2015-11-02 14:42:58
○ 2026-10-11 16:47:10

○NSns2.netfirms.com2015-06-05 → 2015-06-05 · 3 obs

● 2015-06-05 19:40:04
○ 2015-11-02 14:42:58
○ 2026-10-11 16:47:10

●NSns3.sickkids.ca2026-09-29 → 2026-10-11 · 3 obs

○ 2016-10-24 11:48:56
● 2026-09-29 13:23:56
● 2026-10-11 16:47:10

●NSns4.sickkids.ca2026-09-29 → 2026-10-11 · 3 obs

○ 2016-10-24 11:48:56
● 2026-09-29 13:23:56
● 2026-10-11 16:47:10

○MXfwmail01.sickkids.ca2015-11-02 → 2016-04-10 · 5 obs

○ 2015-06-05 19:40:04
● 2015-11-02 14:42:58
● 2016-04-10 09:09:10
○ 2016-10-24 11:48:56
○ 2026-10-11 16:47:10

○MXfwmail03.sickkids.ca2015-11-02 → 2016-04-10 · 5 obs

○ 2015-06-05 19:40:04
● 2015-11-02 14:42:58
● 2016-04-10 09:09:10
○ 2016-10-24 11:48:56
○ 2026-10-11 16:47:10

○MXmailrelay.research.sickkids.ca2015-11-02 → 2016-04-10 · 5 obs

○ 2015-06-05 19:40:04
● 2015-11-02 14:42:58
● 2016-04-10 09:09:10
○ 2016-10-24 11:48:56
○ 2026-10-11 16:47:10

○MXmx.referenceintervals.com2015-06-05 → 2015-06-05 · 3 obs

● 2015-06-05 19:40:04
○ 2015-11-02 14:42:58
○ 2026-10-11 16:47:10

○A192.75.158.1042015-11-02 → 2016-04-10 · 5 obs

○ 2015-06-05 19:40:04
● 2015-11-02 14:42:58
● 2016-04-10 09:09:10
○ 2016-10-24 11:48:56
○ 2026-10-11 16:47:10

○A209.59.212.1492015-06-05 → 2015-06-05 · 3 obs

● 2015-06-05 19:40:04
○ 2015-11-02 14:42:58
○ 2026-10-11 16:47:10

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	e.gtld-servers.net, h.gtld-servers.net, j.gtld-servers.net, b.gtld-servers.net...	-
referenceintervals.com	ns3.sickkids.ca, ns4.sickkids.ca	-

✅ Authoritative Response

Server:142.20.20.140

NS records: ns3.sickkids.ca, ns4.sickkids.ca

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for referenceintervals.com (unsigned zone)

⏱️ Timing

Total: 1313ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`ns3.sickkids.ca, ns4.sickkids.ca`
SOA	1	`ns3.sickkids.ca postmaster.sickkids.ca`

Analysis

Name Servers

Two name servers handle the delegation for referenceintervals.com: ns3.sickkids.ca and ns4.sickkids.ca.

referenceintervals.com shares its name server setup with other domains, including aboutkidshealth.org, aboutkidshealth.ca, centreantipoisonontario.com and two others.

referenceintervals.com has name servers in common with a number of other domains — kidshealthalliance.ca, porcch.ca, sickkids.ca and pcmch.on.ca among them.

These name servers frequently co-occur with the name servers ns3.kidshealthalliance.ca and ns4.kidshealthalliance.ca.

ns3.sickkids.ca → 142.20.20.140 and ns4.sickkids.ca → 142.20.20.141: one IP number per host name.