`o365filtering-dev.net`

DNSSEC	⚠️ Not signed
NS	`ns1-05.azure-dns.com` ⭐
		A	2603:1061:0:700::5^{🇺🇸 Microsoft2603:1000::/25 MICROSOFT}
			PTR	`ns1-05.azure-dns.com`
		A	13.107.236.5^{🇺🇸 Microsoft13.104.0.0/14 MICROSOFT}
			PTR	`ns1-05.azure-dns.com`
NS	`ns2-05.azure-dns.net`
		A	2620:1ec:8ec:700::5^{🇺🇸 Microsoft2620:1ec::/36 MICROSOFT}
			PTR	`ns2-05.azure-dns.net`
		A	150.171.21.5^{🇺🇸 Microsoft150.171.0.0/16 MICROSOFT}
			PTR	`ns2-05.azure-dns.net`
NS	`ns3-05.azure-dns.org`
		A	2a01:111:4000:700::5^{🇬🇧 Microsoft2a01:111:4000::/36}
			PTR	`ns3-05.azure-dns.org`
		A	204.14.183.5^{🇺🇸 Microsoft204.14.180.0/22}
			PTR	`ns3-05.azure-dns.org`
NS	`ns4-05.azure-dns.info`
		A	2620:1ec:bda:700::5^{🇺🇸 Microsoft2620:1ec::/36 MICROSOFT}
			PTR	`ns4-05.azure-dns.info`
		A	208.84.5.5^{🇺🇸 Microsoft208.84.0.0/21 MICROSOFT}
			PTR	`ns4-05.azure-dns.info`
MX	`o365filteringdev-net03c.mail.o365filtering.com` ⭐
TXT	`MS=ms34730412`
SOA	`ns1-05.azure-dns.com`azuredns-hostmaster@microsoft.com serial=1

`net`

	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=1771291465

Same first word

o365filtering-dev.com

o365filtering-dev.net

DNS History

9 records (5 active, 4 former)

●NSns1-05.azure-dns.com2026-02-28 → 2026-03-24 · 3 obs

○ 2020-04-05 17:14:56
● 2026-02-28 17:08:50
● 2026-03-24 04:54:28

○NSns1.msft.net2015-08-21 → 2020-04-05 · 4 obs

● 2015-08-21 07:55:26
● 2020-04-05 17:14:56
○ 2026-02-28 17:08:50
○ 2026-03-24 04:54:28

●NSns2-05.azure-dns.net2026-02-28 → 2026-03-24 · 3 obs

○ 2020-04-05 17:14:56
● 2026-02-28 17:08:50
● 2026-03-24 04:54:28

○NSns2.msft.net2015-08-21 → 2020-04-05 · 4 obs

● 2015-08-21 07:55:26
● 2020-04-05 17:14:56
○ 2026-02-28 17:08:50
○ 2026-03-24 04:54:28

●NSns3-05.azure-dns.org2026-02-28 → 2026-03-24 · 3 obs

○ 2020-04-05 17:14:56
● 2026-02-28 17:08:50
● 2026-03-24 04:54:28

○NSns3.msft.net2015-08-21 → 2020-04-05 · 4 obs

● 2015-08-21 07:55:26
● 2020-04-05 17:14:56
○ 2026-02-28 17:08:50
○ 2026-03-24 04:54:28

●NSns4-05.azure-dns.info2026-02-28 → 2026-03-24 · 3 obs

○ 2020-04-05 17:14:56
● 2026-02-28 17:08:50
● 2026-03-24 04:54:28

○NSns4.msft.net2015-08-21 → 2020-04-05 · 4 obs

● 2015-08-21 07:55:26
● 2020-04-05 17:14:56
○ 2026-02-28 17:08:50
○ 2026-03-24 04:54:28

●MXo365filteringdev-net03c.mail.o365filtering.com2015-08-21 → 2026-03-24 · 2 obs

● 2015-08-21 07:55:26
● 2026-03-24 04:54:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
net	m.gtld-servers.net, k.gtld-servers.net, b.gtld-servers.net, f.gtld-servers.net...	-
o365filtering-dev.net	ns1-05.azure-dns.com, ns2-05.azure-dns.net, ns3-05.azure-dns.org, ns4-05.azure-dns.info	2 records

✅ Authoritative Response

Server:208.84.5.5

NS records: ns1-05.azure-dns.com, ns2-05.azure-dns.net, ns3-05.azure-dns.org, ns4-05.azure-dns.info

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for o365filtering-dev.net (unsigned zone)

⏱️ Timing

Total: 339ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	4	`ns1-05.azure-dns.com, ns2-05.azure-dns.net...`
MX	1	`o365filteringdev-net03c.mail.o365filteri`
TXT	1	`MS=ms34730412`
SOA	1	`ns1-05.azure-dns.com azuredns-hostmaster`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns2-05.azure-dns.net, ns2-05.azure-dns.net)

Analysis

Name Servers

o365filtering-dev.net delegates to four name servers: ns1-05.azure-dns.com, ns4-05.azure-dns.info, ns2-05.azure-dns.net and ns3-05.azure-dns.org.

o365filtering-dev.net at least partially shares name servers with other domains, for instance onedrive.de, nazer.com.tr, nelligan.com, bingmessage.com and p2es.com.

Host names with two IP numbers: ns1-05.azure-dns.com points to 2603:1061:0:700::5 and 13.107.236.5; ns4-05.azure-dns.info points to 2620:1ec:bda:700::5 and 208.84.5.5; ns2-05.azure-dns.net points to 2620:1ec:8ec:700::5 and 150.171.21.5; ns3-05.azure-dns.org points to 2a01:111:4000:700::5 and 204.14.183.5.

Mail Servers

o365filtering-dev.net is handled by a single mail server, o365filteringdev-net03c.mail.o365filtering.com.

o365filtering-dev.net - robtex.com