`sentrydental.com`

DNSSEC	⚠️ Not signed
A	68.66.216.53^{🇺🇸 A2HOSTING68.66.216.0/21 A2 Hosting, Inc.}
		PTR	`mi3-ss36.a2hosting.com`
NS	`ns1.a2hosting.com` ⭐
		A	13.248.158.180^{🇺🇸 Amazon13.248.144.0/20}
			PTR	`a79764cc55c0ac9c0.awsglobalaccelerator.com`
NS	`ns2.a2hosting.com`
		A	75.2.118.134^{🇺🇸 Amazon75.2.112.0/20}
			PTR	`abc65dd9a44b5332f.awsglobalaccelerator.com`
NS	`ns3.a2hosting.com` ⚠️ Not in parent delegation
		A	76.223.26.245^{🇺🇸 Amazon76.223.16.0/20}
			PTR	`a79764cc55c0ac9c0.awsglobalaccelerator.com`
NS	`ns4.a2hosting.com` ⚠️ Not in parent delegation
		A	99.83.147.209^{🇺🇸 Amazon99.83.144.0/20}
			PTR	`abc65dd9a44b5332f.awsglobalaccelerator.com`
MX	`mail.sentrydental.com` ⭐
		A	68.66.216.53^{🇺🇸 A2HOSTING68.66.216.0/21 A2 Hosting, Inc.}
			PTR	`mi3-ss36.a2hosting.com`
TXT	`v=spf1 +a +mx +ip4:68.66.216.53 +include:spf.a2hosting.com ~all`
SOA	`ns1.a2hosting.com`root@mi3-ss36.a2hosting.com 2026-03-14 #1

`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=1775046532

Subdomains

mail.sentrydental.com

Same first word

sentrydental.com

DNS History

15 records (6 active, 9 former)

●NSns1.a2hosting.com2020-03-01 → 2026-04-01 · 3 obs

○ 2017-01-28 16:11:24
● 2020-03-01 03:14:54
● 2026-04-01 12:52:12

○NSns1.bluehost.com2015-06-28 → 2017-01-28 · 5 obs

○ 2008-03-20 02:01:48
● 2015-06-28 03:35:28
● 2017-01-28 16:11:24
○ 2020-03-01 03:14:54
○ 2026-04-01 12:52:12

○NSns1.domaindiscover.com2008-03-20 → 2008-03-20 · 3 obs

● 2008-03-20 02:01:48
○ 2015-06-28 03:35:28
○ 2026-04-01 12:52:12

●NSns2.a2hosting.com2020-03-01 → 2026-04-01 · 3 obs

○ 2017-01-28 16:11:24
● 2020-03-01 03:14:54
● 2026-04-01 12:52:12

○NSns2.bluehost.com2015-06-28 → 2017-01-28 · 5 obs

○ 2008-03-20 02:01:48
● 2015-06-28 03:35:28
● 2017-01-28 16:11:24
○ 2020-03-01 03:14:54
○ 2026-04-01 12:52:12

○NSns2.domaindiscover.com2008-03-20 → 2008-03-20 · 3 obs

● 2008-03-20 02:01:48
○ 2015-06-28 03:35:28
○ 2026-04-01 12:52:12

●NSns3.a2hosting.com2020-03-01 → 2026-04-01 · 3 obs

○ 2017-01-28 16:11:24
● 2020-03-01 03:14:54
● 2026-04-01 12:52:12

●NSns4.a2hosting.com2020-03-01 → 2026-04-01 · 3 obs

○ 2017-01-28 16:11:24
● 2020-03-01 03:14:54
● 2026-04-01 12:52:12

●MXmail.sentrydental.com2015-06-28 → 2026-04-01 · 3 obs

○ 2008-03-20 02:01:48
● 2015-06-28 03:35:28
● 2026-04-01 12:52:12

○MXmx1.daemonmail.net2008-03-20 → 2008-03-20 · 3 obs

● 2008-03-20 02:01:48
○ 2015-06-28 03:35:28
○ 2026-04-01 12:52:12

○MXmx2.daemonmail.net2008-03-20 → 2008-03-20 · 3 obs

● 2008-03-20 02:01:48
○ 2015-06-28 03:35:28
○ 2026-04-01 12:52:12

○A216.104.161.1192008-03-20 → 2008-03-20 · 3 obs

● 2008-03-20 02:01:48
○ 2015-06-28 03:35:28
○ 2026-04-01 12:52:12

○A216.104.161.2192008-03-20 → 2008-03-20 · 3 obs

● 2008-03-20 02:01:48
○ 2015-06-28 03:35:28
○ 2026-04-01 12:52:12

●A68.66.216.532020-03-01 → 2026-04-01 · 3 obs

○ 2017-01-28 16:11:24
● 2020-03-01 03:14:54
● 2026-04-01 12:52:12

○A70.40.216.462015-06-28 → 2017-01-28 · 5 obs

○ 2008-03-20 02:01:48
● 2015-06-28 03:35:28
● 2017-01-28 16:11:24
○ 2020-03-01 03:14:54
○ 2026-04-01 12:52:12

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
sentrydental.com	ns1.a2hosting.com, ns2.a2hosting.com	2 records

✅ Authoritative Response

Server:75.2.118.134

NS records: ns1.a2hosting.com, ns2.a2hosting.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sentrydental.com (unsigned zone)

⏱️ Timing

Total: 174ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`68.66.216.53`
NS	4	`ns2.a2hosting.com, ns1.a2hosting.com...`
MX	1	`mail.sentrydental.com (pri: 0)`
TXT	1	`v=spf1 +a +mx +ip4:68.66.216.53 +include`
SOA	1	`ns1.a2hosting.com root.mi3-ss36.a2hostin`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1.a2hosting.com, ns2.a2hosting.com)

Analysis

Hierarchy

sentrydental.com is a parent of mail.sentrydental.com.

IP Addresses

sentrydental.com points to a single IP address: 68.66.216.53.

Other host names such as allpetsphoto.com, dlaurance.com, geohelinewyorkcity.com, mi3-ss36.a2hosting.com and hiolux.com share IP numbers with sentrydental.com.

Name Servers

sentrydental.com is delegated to four name servers: ns1.a2hosting.com, ns2.a2hosting.com, ns3.a2hosting.com and ns4.a2hosting.com.

At least part of the name servers for sentrydental.com are shared with other domains, for instance elrondhubbard.com, bestmexicanfoods.com, 3deo.org, huerdo.com and aquaroyalcyprus.com.

These name servers are commonly used with ns1.supercp.com, ns2.supercp.com, ns3.supercp.com and ns4.supercp.com.

Host names with one IP: ns1.a2hosting.com points to 13.248.158.180; ns2.a2hosting.com points to 75.2.118.134; ns3.a2hosting.com points to 76.223.26.245; ns4.a2hosting.com points to 99.83.147.209.

Mail Servers

The mail server for sentrydental.com is mail.sentrydental.com.

Host mail.sentrydental.com points to IP 68.66.216.53.

sentrydental.com - robtex.com