`secure-office-365.com`

DNSSEC	⚠️ Not signed
NS	`ns-1409.awsdns-48.org` ⚠️ Not in zone NS records
		A	2600:9000:5305:8100::1^{🇺🇸 Amazon2600:9000:5305::/48 - CloudFront}
			PTR	`ns-1409.awsdns-48.org`
		A	205.251.197.129^{🇺🇸 Amazon205.251.197.0/24 prefix}
			PTR	`ns-1409.awsdns-48.org`
NS	`ns-1620.awsdns-10.co.uk` ⚠️ Not in zone NS records
		A	2600:9000:5306:5400::1^{🇺🇸 Amazon2600:9000:5306::/48 - CloudFront}
			PTR	`ns-1620.awsdns-10.co.uk`
		A	205.251.198.84^{🇺🇸 Amazon205.251.198.0/24 prefix}
			PTR	`ns-1620.awsdns-10.co.uk`
NS	`ns-412.awsdns-51.com` ⚠️ Not in zone NS records
		A	2600:9000:5301:9c00::1^{🇺🇸 Amazon2600:9000:5301::/48 - CloudFront}
			PTR	`ns-412.awsdns-51.com`
		A	205.251.193.156^{🇺🇸 Amazon205.251.193.0/24 prefix}
			PTR	`ns-412.awsdns-51.com`
NS	`ns-894.awsdns-47.net` ⚠️ Not in zone NS records
		A	2600:9000:5303:7e00::1^{🇺🇸 Amazon2600:9000:5303::/48 - CloudFront}
			PTR	`ns-894.awsdns-47.net`
		A	205.251.195.126^{🇺🇸 Amazon205.251.195.0/24 prefix}
			PTR	`ns-894.awsdns-47.net`

`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=1777141691

Same first word

secure-office-365.com

DNS History

9 records (4 active, 5 former)

●NSns-1409.awsdns-48.org2016-12-16 → 2026-04-25 · 2 obs

● 2016-12-16 08:33:36
● 2026-04-25 18:56:54

●NSns-1620.awsdns-10.co.uk2016-12-16 → 2026-04-25 · 2 obs

● 2016-12-16 08:33:36
● 2026-04-25 18:56:54

●NSns-412.awsdns-51.com2016-12-16 → 2026-04-25 · 2 obs

● 2016-12-16 08:33:36
● 2026-04-25 18:56:54

●NSns-894.awsdns-47.net2016-12-16 → 2026-04-25 · 2 obs

● 2016-12-16 08:33:36
● 2026-04-25 18:56:54

○MXinbound-smtp.us-east-1.amazonaws.com2016-12-16 → 2018-12-06 · 4 obs

● 2016-12-16 08:33:36
● 2018-12-06 06:11:50
○ 2026-03-31 13:54:20
○ 2026-04-25 18:56:54

○A52.20.163.1992016-12-16 → 2016-12-16 · 3 obs

● 2016-12-16 08:33:36
○ 2018-12-06 06:11:50
○ 2026-04-25 18:56:54

○A52.207.62.432016-12-16 → 2016-12-16 · 3 obs

● 2016-12-16 08:33:36
○ 2018-12-06 06:11:50
○ 2026-04-25 18:56:54

○A52.22.144.2262018-12-06 → 2018-12-06 · 4 obs

○ 2016-12-16 08:33:36
● 2018-12-06 06:11:50
○ 2026-03-31 13:54:20
○ 2026-04-25 18:56:54

○A54.164.213.1332018-12-06 → 2018-12-06 · 4 obs

○ 2016-12-16 08:33:36
● 2018-12-06 06:11:50
○ 2026-03-31 13:54:20
○ 2026-04-25 18:56:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
secure-office-365.com	ns-412.awsdns-51.com, ns-894.awsdns-47.net, ns-1620.awsdns-10.co.uk, ns-1409.awsdns-48.org	2 records

✅ Authoritative Response

Server:205.251.193.156

NS records: ns-412.awsdns-51.com, ns-894.awsdns-47.net, ns-1620.awsdns-10.co.uk, ns-1409.awsdns-48.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for secure-office-365.com (unsigned zone)

⏱️ Timing

Total: 619ms | Queries: -

📄 Records

Type	Count	Sample Data

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-412.awsdns-51.com, ns-412.awsdns-51.com)

Analysis

Name Servers

secure-office-365.com is delegated to four name servers: ns-412.awsdns-51.com, ns-894.awsdns-47.net, ns-1409.awsdns-48.org and ns-1620.awsdns-10.co.uk.

secure-office-365.com shares name servers with other domains at least partially, for instance fewl.net, d23avq4iqxxzxe.cloudfront.net, milanuncios.es, planetwordfind.com and manh.at.

Host names with two IP numbers:

ns-412.awsdns-51.com resolves to 2600:9000:5301:9c00::1 and 205.251.193.156.

ns-894.awsdns-47.net resolves to 2600:9000:5303:7e00::1 and 205.251.195.126.

ns-1409.awsdns-48.org resolves to 2600:9000:5305:8100::1 and 205.251.197.129.

ns-1620.awsdns-10.co.uk resolves to 2600:9000:5306:5400::1 and 205.251.198.84.

secure-office-365.com - robtex.com