sentrynetworkgroup.com - dns.ninja

`sentrynetworkgroup.com`

DNSSEC	⚠️ Not signed
A	208.87.84.34^{🇺🇸 IMMEDION-1208.87.84.0/24 auto-generated route object for 208.87.84.0/24}
		PTR	`webhost1.prod.onsng.com`
NS	`ns1-08.azure-dns.com` ⭐
		A	2603:1061:0:700::8^{🇺🇸 Microsoft2603:1000::/25 MICROSOFT}
			PTR	`ns1-08.azure-dns.com`
		A	13.107.236.8^{🇺🇸 Microsoft13.104.0.0/14 MICROSOFT}
			PTR	`ns1-08.azure-dns.com`
NS	`ns2-08.azure-dns.net`
		A	2620:1ec:8ec:700::8^{🇺🇸 Microsoft2620:1ec::/36 MICROSOFT}
			PTR	`ns2-08.azure-dns.net`
		A	150.171.21.8^{🇺🇸 Microsoft150.171.0.0/16 MICROSOFT}
			PTR	`ns2-08.azure-dns.net`
NS	`ns3-08.azure-dns.org`
		A	2a01:111:4000:700::8^{🇬🇧 Microsoft2a01:111:4000::/36}
			PTR	`ns3-08.azure-dns.org`
		A	204.14.183.8^{🇺🇸 Microsoft204.14.180.0/22}
			PTR	`ns3-08.azure-dns.org`
NS	`ns4-08.azure-dns.info`
		A	2620:1ec:bda:700::8^{🇺🇸 Microsoft2620:1ec::/36 MICROSOFT}
			PTR	`ns4-08.azure-dns.info`
		A	208.84.5.8^{🇺🇸 Microsoft208.84.0.0/21 MICROSOFT}
			PTR	`ns4-08.azure-dns.info`
MX	`pbx.sentrynetworkgroup.com` ⭐
		A	104.171.122.243^{🇺🇸 DACENTEC-1104.171.112.0/20 NET-104.171.112.0/20}
MX	`sentrynetworkgroup-com.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:c902::5^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-sj2pr05cu00505.inbound.protection.outlook.com`
		A	2a01:111:f403:c91d::b^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-mw2pr02cu00603.inbound.protection.outlook.com`
		A	2a01:111:f403:c922::^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-bl0pr03cu00200.inbound.protection.outlook.com`
		A	2a01:111:f403:c946::6^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-ch5pr02cu00406.inbound.protection.outlook.com`
		A	52.101.8.42^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-dm6pr03cu00402.inbound.protection.outlook.com`
		A	52.101.8.51^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-dm1pr04cu00203.inbound.protection.outlook.com`
		A	52.101.9.24^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-bl2pr02cu00400.inbound.protection.outlook.com`
		A	52.101.40.24^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-cy5pr05cu00100.inbound.protection.outlook.com`
MX	`echo.onsng.com`⁽¹⁰⁾
TXT	`MS=ms72676368`
TXT	`v=spf1 a:echo.onsng.com a:helpdesk.sentrynetworkgroup.com include:spf.protect...`
SOA	`ns1-08.azure-dns.com`azuredns-hostmaster@microsoft.com serial=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=1785754412

Subdomains

pbx.sentrynetworkgroup.com

smtp.sentrynetworkgroup.com

Same first word

sentrynetworkgroup.com

DNS History

13 records (8 active, 5 former)

○NSkai.ns.cloudflare.com2016-09-27 → 2017-12-22 · 5 obs

○ 2016-04-08 16:52:46
● 2016-09-27 00:50:56
● 2017-12-22 18:10:42
○ 2026-02-22 16:17:08
○ 2026-08-03 11:12:56

○NSnina.ns.cloudflare.com2016-09-27 → 2017-12-22 · 5 obs

○ 2016-04-08 16:52:46
● 2016-09-27 00:50:56
● 2017-12-22 18:10:42
○ 2026-02-22 16:17:08
○ 2026-08-03 11:12:56

●NSns1-08.azure-dns.com2026-02-22 → 2026-08-03 · 3 obs

○ 2017-12-22 18:10:42
● 2026-02-22 16:17:08
● 2026-08-03 11:12:56

○NSns1.sentrynetworkgroup.net2015-08-03 → 2016-04-08 · 4 obs

● 2015-08-03 10:13:28
● 2016-04-08 16:52:46
○ 2016-09-27 00:50:56
○ 2026-08-03 11:12:56

●NSns2-08.azure-dns.net2026-02-22 → 2026-08-03 · 3 obs

○ 2017-12-22 18:10:42
● 2026-02-22 16:17:08
● 2026-08-03 11:12:56

○NSns2.sentrynetworkgroup.net2015-08-03 → 2016-04-08 · 4 obs

● 2015-08-03 10:13:28
● 2016-04-08 16:52:46
○ 2016-09-27 00:50:56
○ 2026-08-03 11:12:56

●NSns3-08.azure-dns.org2026-02-22 → 2026-08-03 · 3 obs

○ 2017-12-22 18:10:42
● 2026-02-22 16:17:08
● 2026-08-03 11:12:56

●NSns4-08.azure-dns.info2026-02-22 → 2026-08-03 · 3 obs

○ 2017-12-22 18:10:42
● 2026-02-22 16:17:08
● 2026-08-03 11:12:56

●MXecho.onsng.com2026-02-22 → 2026-08-03 · 3 obs

○ 2015-11-30 12:57:44
● 2026-02-22 16:17:08
● 2026-08-03 11:12:56

●MXpbx.sentrynetworkgroup.com2026-02-22 → 2026-08-03 · 3 obs

○ 2015-11-30 12:57:44
● 2026-02-22 16:17:08
● 2026-08-03 11:12:56

●MXsentrynetworkgroup-com.mail.protection.outlook.com2015-11-30 → 2026-08-03 · 3 obs

○ 2015-08-03 10:13:28
● 2015-11-30 12:57:44
● 2026-08-03 11:12:56

○MXsmtp.sentrynetworkgroup.com2015-08-03 → 2015-08-03 · 3 obs

● 2015-08-03 10:13:28
○ 2015-11-30 12:57:44
○ 2026-08-03 11:12:56

●A208.87.84.342026-02-22 → 2026-08-03 · 2 obs

● 2026-02-22 16:17:08
● 2026-08-03 11:12:56

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
sentrynetworkgroup.com	ns1-08.azure-dns.com, ns2-08.azure-dns.net, ns3-08.azure-dns.org, ns4-08.azure-dns.info	2 records

✅ Authoritative Response

Server:208.84.5.8

NS records: ns1-08.azure-dns.com, ns2-08.azure-dns.net, ns3-08.azure-dns.org, ns4-08.azure-dns.info

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sentrynetworkgroup.com (unsigned zone)

⏱️ Timing

Total: 187ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`208.87.84.34`
NS	4	`ns1-08.azure-dns.com, ns2-08.azure-dns.net...`
MX	3	`sentrynetworkgroup-com.mail.protection.o, echo.onsng.com (pri: 10)...`
TXT	2	`MS=ms72676368, v=spf1 a:echo.onsng.com a:helpdesk.sentr`
SOA	1	`ns1-08.azure-dns.com azuredns-hostmaster`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1-08.azure-dns.com, ns1-08.azure-dns.com)

Analysis

Hierarchy

pbx.sentrynetworkgroup.com and smtp.sentrynetworkgroup.com are both subdomains of sentrynetworkgroup.com.

IP Addresses

sentrynetworkgroup.com resolves to one IP address: 208.87.84.34.

Name Servers

The authoritative name servers for sentrynetworkgroup.com are ns1-08.azure-dns.com, ns4-08.azure-dns.info, ns2-08.azure-dns.net and ns3-08.azure-dns.org.

sentrynetworkgroup.com shares at least some of its name servers with other domains, including hetmeetbedrijf.nl, escriptionasp.ca, integralife.co.uk and two others.

The host names ns1-08.azure-dns.com, ns4-08.azure-dns.info, ns2-08.azure-dns.net and ns3-08.azure-dns.org each resolve to two IP addresses: ns1-08.azure-dns.com resolves to 13.107.236.8 and 2603:1061:0:700::8; ns4-08.azure-dns.info resolves to 208.84.5.8 and 2620:1ec:bda:700::8; ns2-08.azure-dns.net resolves to 150.171.21.8 and 2620:1ec:8ec:700::8; ns3-08.azure-dns.org resolves to 204.14.183.8 and 2a01:111:4000:700::8.

Mail Servers

sentrynetworkgroup.com is handled by three mail servers: echo.onsng.com, pbx.sentrynetworkgroup.com and sentrynetworkgroup-com.mail.protection.outlook.com.

Hostnames that resolve to 8 IP addresses:

sentrynetworkgroup-com.mail.protection.outlook.com resolves to 52.101.8.42, 52.101.8.51 and 52.101.9.24 among others, with 5 other IP addresses in total.

Hosts with just one IP address:

The hostname pbx.sentrynetworkgroup.com resolves to 104.171.122.243.