`usna1.onmicrosoft.com`

DNSSEC	⚠️ Not signed
MX	`usna1.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:c91d::a^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-co1pr21cu00202.inbound.protection.outlook.com`
		A	2a01:111:f403:f908::1^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-bn1pr04cu00101.inbound.protection.outlook.com`
		A	2a01:111:f403:f90c::^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-sn1pr03cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:f90d::1^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-sn1pr0501cu00301.inbound.protection.outlook.com`
		A	52.101.8.44^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-dm5pr04cu00104.inbound.protection.outlook.com`
		A	52.101.11.2^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sn1pr03cu00102.inbound.protection.outlook.com`
		A	52.101.50.4^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-co1pr03cu00404.inbound.protection.outlook.com`
		A	52.101.194.12^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-ch0pr04cu00504.inbound.protection.outlook.com`
TXT	`v=spf1 include:spf.protection.outlook.com -all`

`onmicrosoft.com`

	DNSSEC	⚠️ Not signed
	NS	`ns1-208.azure-dns.com` ⭐
	NS	`ns1.bdm.microsoftonline.com`
	NS	`ns2.bdm.microsoftonline.com`
	NS	`ns3.bdm.microsoftonline.com`
	NS	`ns4.bdm.microsoftonline.com`
	TXT	`v=spf1 include:spf.protection.outlook.com -all`
	TXT	`google-site-verification=1-9fQJjGKgDh7UVF1XcVfBMOr-C1emzk5wjD0ZqnULc`
	SOA	`ns1-208.azure-dns.com`azuredns-hostmaster@microsoft.com serial=1

WOT: SAFE (50/100)
rank #359014 globally
rank #156551 in the tld
WOT: SAFE (50/100)
📈 Tranco rank: #2,480

Subdomains

autodiscover.usna1.onmicrosoft.com

Similar names

unas1.com

n1aus.net

1snau.ru

1nusa.com

1suan.com

nusa1.com

DNS History

5 records (1 active, 4 former)

○NSns1.bdm.microsoftonline.com2017-01-05 → 2017-01-05 · 3 obs

● 2017-01-05 09:17:56
○ 2026-04-06 10:42:50
○ 2026-04-12 03:02:10

○NSns2.bdm.microsoftonline.com2017-01-05 → 2017-01-05 · 3 obs

● 2017-01-05 09:17:56
○ 2026-04-06 10:42:50
○ 2026-04-12 03:02:10

○NSns3.bdm.microsoftonline.com2017-01-05 → 2017-01-05 · 3 obs

● 2017-01-05 09:17:56
○ 2026-04-06 10:42:50
○ 2026-04-12 03:02:10

○NSns4.bdm.microsoftonline.com2017-01-05 → 2017-01-05 · 3 obs

● 2017-01-05 09:17:56
○ 2026-04-06 10:42:50
○ 2026-04-12 03:02:10

●MXusna1.mail.protection.outlook.com2017-01-05 → 2026-04-12 · 2 obs

● 2017-01-05 09:17:56
● 2026-04-12 03:02:10

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	m.gtld-servers.net, j.gtld-servers.net, d.gtld-servers.net, f.gtld-servers.net...	-
onmicrosoft.com	ns1.bdm.microsoftonline.com, ns2.bdm.microsoftonline.com, ns3.bdm.microsoftonline.com, ns4.bdm.microsoftonline.com	8 records

✅ Authoritative Response

Server:208.84.5.208

NS records: ns1.bdm.microsoftonline.com, ns2.bdm.microsoftonline.com, ns3.bdm.microsoftonline.com, ns4.bdm.microsoftonline.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for onmicrosoft.com (unsigned zone)

⏱️ Timing

Total: 108ms | Queries: -

📄 Records

Type	Count	Sample Data
MX	1	`usna1.mail.protection.outlook.com (pri:`
TXT	1	`v=spf1 include:spf.protection.outlook.co`

📌 Glue Records Collected

Total: 8

Out-of-bailiwick: 8 (ns1.bdm.microsoftonline.com, ns1.bdm.microsoftonline.com, ns2.bdm.microsoftonline.com...)

Analysis

Hierarchy

usna1.onmicrosoft.com is parent of autodiscover.usna1.onmicrosoft.com.

Mail Servers

usna1.onmicrosoft.com is served by a single mail server, usna1.mail.protection.outlook.com.

The host name usna1.mail.protection.outlook.com resolves to eight IP numbers: 2a01:111:f403:c91d::a, 2a01:111:f403:f908::1, 2a01:111:f403:f90c::, 2a01:111:f403:f90d::1, 52.101.8.44, 52.101.11.2, 52.101.50.4 and 52.101.194.12.

usna1.onmicrosoft.com - robtex.com