refcert.com - dns.ninja

`refcert.com`

DNSSEC	⚠️ Not signed
A	172.232.3.86^{🇺🇸 AKAMAI-LINODE-AP172.232.0.0/19 Akamai Technologies}
		PTR	`k8s-svc-lander-evan-us-ord-02.parklogic.net`
A	172.236.109.120^{🇺🇸 AKAMAI-LINODE-AP172.236.96.0/19 Akamai Technologies}
A	172.238.190.126^{🇺🇸 AKAMAI-LINODE-AP172.238.160.0/19 Akamai Technologies}
NS	`ns1.linode.com` ⭐
		A	2600:14c0:6::2^{🇺🇸 Akamai2600:14c0:6::/48 Technologies}
			PTR	`c1-2.akashield.net`
		A	92.123.94.2^{🇳🇱 Akamai92.123.94.0/24 Technologies}
			PTR	`c1-2.akashield.net`
NS	`ns2.linode.com`
		A	2600:14c0:6::3^{🇺🇸 Akamai2600:14c0:6::/48 Technologies}
			PTR	`c1-3.akashield.net`
		A	92.123.94.3^{🇳🇱 Akamai92.123.94.0/24 Technologies}
			PTR	`c1-3.akashield.net`
NS	`ns3.linode.com`
		A	2600:14c0:7::3^{🇺🇸 Akamai2600:14c0:7::/48 Technologies}
			PTR	`c2-3.akashield.net`
		A	92.123.95.3^{🇳🇱 Akamai92.123.95.0/24 Technologies}
			PTR	`c2-3.akashield.net`
NS	`ns4.linode.com` ⚠️ Not in parent delegation
		A	2600:14c0:7::4^{🇺🇸 Akamai2600:14c0:7::/48 Technologies}
			PTR	`c2-4.akashield.net`
		A	92.123.95.4^{🇳🇱 Akamai92.123.95.0/24 Technologies}
			PTR	`c2-4.akashield.net`
NS	`ns5.linode.com` ⚠️ Not in parent delegation
		A	2600:14c0:7::2^{🇺🇸 Akamai2600:14c0:7::/48 Technologies}
			PTR	`c2-2.akashield.net`
		A	92.123.95.2^{🇳🇱 Akamai92.123.95.0/24 Technologies}
			PTR	`c2-2.akashield.net`
SOA	`ns1.linode.com`protection@domainoverwatch.com serial=2021000004

`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=1785047622

Same first word

refcert.com

Similar names

certref.com

freertc.org

ferrtec.com

DNS History

16 records (8 active, 8 former)

○NSdns1.registrar-servers.com2015-05-12 → 2016-07-13 · 4 obs

● 2015-05-12 05:55:50
● 2016-07-13 14:13:12
○ 2017-03-25 05:01:50
○ 2026-07-26 06:55:20

○NSdns2.registrar-servers.com2015-05-12 → 2016-07-13 · 4 obs

● 2015-05-12 05:55:50
● 2016-07-13 14:13:12
○ 2017-03-25 05:01:50
○ 2026-07-26 06:55:20

○NSdns3.registrar-servers.com2015-05-12 → 2016-07-13 · 4 obs

● 2015-05-12 05:55:50
● 2016-07-13 14:13:12
○ 2017-03-25 05:01:50
○ 2026-07-26 06:55:20

○NSdns4.registrar-servers.com2015-05-12 → 2016-07-13 · 4 obs

● 2015-05-12 05:55:50
● 2016-07-13 14:13:12
○ 2017-03-25 05:01:50
○ 2026-07-26 06:55:20

○NSdns5.registrar-servers.com2015-05-12 → 2016-07-13 · 4 obs

● 2015-05-12 05:55:50
● 2016-07-13 14:13:12
○ 2017-03-25 05:01:50
○ 2026-07-26 06:55:20

●NSns1.linode.com2017-03-25 → 2026-07-26 · 3 obs

○ 2016-07-13 14:13:12
● 2017-03-25 05:01:50
● 2026-07-26 06:55:20

●NSns2.linode.com2017-03-25 → 2026-07-26 · 3 obs

○ 2016-07-13 14:13:12
● 2017-03-25 05:01:50
● 2026-07-26 06:55:20

●NSns3.linode.com2017-03-25 → 2026-07-26 · 3 obs

○ 2016-07-13 14:13:12
● 2017-03-25 05:01:50
● 2026-07-26 06:55:20

●NSns4.linode.com2017-03-25 → 2026-07-26 · 3 obs

○ 2016-07-13 14:13:12
● 2017-03-25 05:01:50
● 2026-07-26 06:55:20

●NSns5.linode.com2017-03-25 → 2026-07-26 · 3 obs

○ 2016-07-13 14:13:12
● 2017-03-25 05:01:50
● 2026-07-26 06:55:20

○MXmxa.mailgun.org2017-03-25 → 2017-03-25 · 3 obs

● 2017-03-25 05:01:50
○ 2026-07-21 19:44:08
○ 2026-07-26 06:55:20

○MXmxb.mailgun.org2017-03-25 → 2017-03-25 · 3 obs

● 2017-03-25 05:01:50
○ 2026-07-21 19:44:08
○ 2026-07-26 06:55:20

●A172.232.3.862026-07-21 → 2026-07-26 · 3 obs

○ 2017-03-25 05:01:50
● 2026-07-21 19:44:08
● 2026-07-26 06:55:20

●A172.236.109.1202026-07-21 → 2026-07-26 · 3 obs

○ 2017-03-25 05:01:50
● 2026-07-21 19:44:08
● 2026-07-26 06:55:20

●A172.238.190.1262026-07-21 → 2026-07-26 · 3 obs

○ 2017-03-25 05:01:50
● 2026-07-21 19:44:08
● 2026-07-26 06:55:20

○A45.33.34.1182017-03-25 → 2017-03-25 · 3 obs

● 2017-03-25 05:01:50
○ 2026-07-21 19:44:08
○ 2026-07-26 06:55:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
refcert.com	ns1.linode.com, ns2.linode.com, ns3.linode.com	6 records

✅ Authoritative Response

Server:92.123.95.3

NS records: ns1.linode.com, ns2.linode.com, ns3.linode.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for refcert.com (unsigned zone)

⏱️ Timing

Total: 970ms | Queries: -

📄 Records

Type	Count	Sample Data
A	3	`172.238.190.126, 172.236.109.120...`
NS	5	`ns1.linode.com, ns2.linode.com...`
SOA	1	`ns1.linode.com protection.domainoverwatc`

📌 Glue Records Collected

Total: 6

Out-of-bailiwick: 6 (ns1.linode.com, ns1.linode.com, ns2.linode.com...)

Analysis

IP Addresses

refcert.com points to three IP numbers, namely 172.232.3.86, 172.236.109.120 and 172.238.190.126.

Additional host names — thinkcamp.net, q71.org, globalfitbit.com and two others — share IP numbers with refcert.com.

Name Servers

Delegation for refcert.com is to five name servers: ns1.linode.com, ns2.linode.com, ns3.linode.com and two others.

At least some of refcert.com's name servers are shared with other domains, for example sylphase.net, waterdamagethousandoaks.co, kevinnehls.com and two more.

These name servers tend to be deployed in combination with the name servers ns4.linode.com and ns5.linode.com.

Host names with two IP numbers:

ns1.linode.com resolves to two addresses: 92.123.94.2 and 2600:14c0:6::2.

ns2.linode.com resolves to two addresses: 92.123.94.3 and 2600:14c0:6::3.

ns3.linode.com resolves to two addresses: 92.123.95.3 and 2600:14c0:7::3.

ns4.linode.com resolves to two addresses: 92.123.95.4 and 2600:14c0:7::4.

ns5.linode.com resolves to two addresses: 92.123.95.2 and 2600:14c0:7::2.