mail.firstunit.com - dns.ninja

🛡️Domain Reputation CheckBlocklist, phishing & malware status→

mail.firstunit.com

CNAMEfirstunit.com
DNSSEC⚠️ Not signed
A69.48.182.188🇺🇸 A2HOSTING69.48.176.0/21
PTRserver.firstunit.com
NSns6948182188.a2dns.com ⭐
A69.48.182.188🇺🇸 A2HOSTING69.48.176.0/21
PTRserver.firstunit.com
NSns6948182189.a2dns.com
A69.48.182.189🇺🇸 A2HOSTING69.48.176.0/21
PTR69.48.182.189.static.a2webhosting.com
MXfirstunit-com.mail.protection.outlook.com ⭐
A2a01:111:f403:c91d::🇺🇸 Microsoft2a01:111:f000::/36
PTRmail-mw2pr04cu00100.inbound.protection.outlook.com
A2a01:111:f403:c91d::a🇺🇸 Microsoft2a01:111:f000::/36
PTRmail-co1pr21cu00202.inbound.protection.outlook.com
A2a01:111:f403:f804::3🇺🇸 Microsoft2a01:111:f000::/36
PTRmail-co1pr03cu00403.inbound.protection.outlook.com
A2a01:111:f403:f902::🇺🇸 Microsoft2a01:111:f000::/36
PTRmail-bl2pr04cu00100.inbound.protection.outlook.com
A52.101.9.5🇺🇸 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-mn2pr04cu00205.inbound.protection.outlook.com
A52.101.40.1🇺🇸 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-cy4pr03cu00101.inbound.protection.outlook.com
A52.101.40.6🇺🇸 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-cy1pr03cu00106.inbound.protection.outlook.com
A52.101.50.10🇺🇸 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-mw2pr02cu00502.inbound.protection.outlook.com
TXTv=spf1 include:spf.protection.outlook.com include:sendgrid.net -all
TXT7om939u4ttdo1uels9886karo8
TXTapple-domain-verification=HFXiYS4EVUpNB5w1
SOAns6948182188.a2dns.comroot@server.firstunit.com 2026-07-31 #1

firstunit.com

DNSSEC⚠️ Not signed
A69.48.182.188🇺🇸 A2HOSTING69.48.176.0/21
NSns6948182188.a2dns.com ⭐
NSns6948182189.a2dns.com
MXfirstunit-com.mail.protection.outlook.com ⭐
TXTv=spf1 include:spf.protection.outlook.com include:sendgrid.net -all
TXT7om939u4ttdo1uels9886karo8
TXTapple-domain-verification=HFXiYS4EVUpNB5w1
SOAns6948182188.a2dns.comroot@server.firstunit.com 2026-07-31 #1
WOT: SAFE (62/100)
WOT: SAFE (68/100)

Same first word

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DNS History

5 records (1 active, 4 former)

20162017201820192020202120222023202420252026MXmx00.1and1.commx01.1and1.comA107.180.25.23967.78.155.102CNAMEfirstunit.com
○MXmx00.1and1.com2015-05-27 → 2015-05-27 · 3 obs
● 2015-05-27 06:47:30
○ 2015-10-24 22:15:16
○ 2026-08-16 17:00:08
○MXmx01.1and1.com2015-05-27 → 2015-05-27 · 3 obs
● 2015-05-27 06:47:30
○ 2015-10-24 22:15:16
○ 2026-08-16 17:00:08
○A107.180.25.2392015-10-24 → 2016-01-15 · 5 obs
○ 2015-05-27 06:47:30
● 2015-10-24 22:15:16
● 2016-01-15 03:39:24
○ 2016-04-11 01:16:42
○ 2026-08-16 17:00:08
○A67.78.155.1022015-05-27 → 2015-05-27 · 3 obs
● 2015-05-27 06:47:30
○ 2015-10-24 22:15:16
○ 2026-08-16 17:00:08
●CNAMEfirstunit.com2026-08-16 → 2026-08-16 · 2 obs
● 2026-08-16 17:00:06
● 2026-08-16 17:00:08

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
firstunit.comns6948182188.a2dns.com, ns6948182189.a2dns.com2 records

✅ Authoritative Response

Server:69.48.182.188

NS records: ns6948182188.a2dns.com, ns6948182189.a2dns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for firstunit.com (unsigned zone)

⏱️ Timing

Total: 195ms | Queries: -

📄 Records

TypeCountSample Data
CNAME1firstunit.com

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns6948182188.a2dns.com, ns6948182189.a2dns.com)

Analysis

IP Addresses

mail.firstunit.com resolves to just one IP address, 69.48.182.188.

Host names such as ns6948182188.a2dns.com, firstunit.com and server.firstunit.com share their IP numbers with mail.firstunit.com.

Name Servers

mail.firstunit.com is served by two delegated name servers, ns6948182188.a2dns.com and ns6948182189.a2dns.com.

Other domains share the same name server configuration as mail.firstunit.com, for example firstunit.com.

Each of ns6948182188.a2dns.com and ns6948182189.a2dns.com has one IP address: ns6948182188.a2dns.com uses 69.48.182.188 and ns6948182189.a2dns.com uses 69.48.182.189.

Mail Servers

The sole mail server for mail.firstunit.com is firstunit-com.mail.protection.outlook.com.

Mail server setup for mail.firstunit.com matches that of other domains, among them firstunit.com.

With 8 IP addresses total, firstunit-com.mail.protection.outlook.com resolves to 52.101.9.5, 52.101.40.1, 52.101.40.6 and 5 others.