certusmail.com - dns.ninja

`certusmail.com`

DNSSEC	⚠️ Not signed
A	2607:f1c0:100f:f000::200^{🇺🇸 IONOS-AS2607:f1c0::/32 1&1 Internet Inc. 701 Lee Rd, Suite 300 Chesterbrook, PA 19087 US}
		PTR	`2607-f1c0-100f-f000-0000-0000-0000-0200.elastic-ssl.ui-r.com`
A	74.208.236.103^{🇺🇸 IONOS-AS74.208.0.0/16 IONOS Inc.}
NS	`ns1126.ui-dns.org` ⭐
		A	2001:8d8:fe:53:0:d9a0:537e:100^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns1126.ui-dns.org`
		A	217.160.83.126^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns1126.ui-dns.org`
NS	`ns1019.ui-dns.de`
		A	2001:8d8:fe:53:0:d9a0:5013:100^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns1019.ui-dns.de`
		A	217.160.80.19^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns1019.ui-dns.de`
NS	`ns1080.ui-dns.biz`
		A	2001:8d8:fe:53:0:d9a0:5150:100^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns1080.ui-dns.biz`
		A	217.160.81.80^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns1080.ui-dns.biz`
NS	`ns1123.ui-dns.com`
		A	2001:8d8:fe:53:0:d9a0:527b:100^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns1123.ui-dns.com`
		A	217.160.82.123^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns1123.ui-dns.com`
MX	`certusmail-com.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:ca34::^{🇳🇴 Microsoft2a01:111:f000::/36}
			PTR	`mail-olap279cu00200.inbound.protection.outlook.com`
		A	2a01:111:f403:ca34::1^{🇳🇴 Microsoft2a01:111:f000::/36}
			PTR	`mail-os6p279cu01301.inbound.protection.outlook.com`
		A	2a01:111:f403:ca34::2^{🇳🇴 Microsoft2a01:111:f000::/36}
			PTR	`mail-os5p279cu00202.inbound.protection.outlook.com`
		A	2a01:111:f403:ca36::^{🇳🇴 Microsoft2a01:111:f000::/36}
			PTR	`mail-svzp279cu00100.inbound.protection.outlook.com`
		A	52.101.177.0^{🇳🇴 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-olap279cu00200.inbound.protection.outlook.com`
		A	52.101.177.1^{🇳🇴 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-os6p279cu01301.inbound.protection.outlook.com`
		A	52.101.177.2^{🇳🇴 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-os5p279cu00202.inbound.protection.outlook.com`
		A	52.101.179.0^{🇳🇴 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-svzp279cu00100.inbound.protection.outlook.com`
TXT	`v=verifydomain MS=6746138`
TXT	`v=spf1 include:_netblocks1.luxsci.com include:spf.protection.outlook.com ~all`
SOA	`ns1126.ui-dns.org`hostmaster@1und1.com 2017-06-01 #10

`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=1783161306

Same first word

certusmail.com

Similar names

DNS History

17 records (7 active, 10 former)

○NSbind0.easydns.com2015-08-02 → 2016-02-24 · 4 obs

● 2015-08-02 08:54:18
● 2016-02-24 11:37:36
○ 2017-04-19 23:27:00
○ 2026-07-04 10:41:58

○NSdns1.easydns.com2015-08-02 → 2017-04-19 · 4 obs

● 2015-08-02 08:54:18
● 2017-04-19 23:27:00
○ 2026-04-13 02:55:58
○ 2026-07-04 10:41:58

○NSdns2.easydns.net2015-08-02 → 2017-04-19 · 4 obs

● 2015-08-02 08:54:18
● 2017-04-19 23:27:00
○ 2026-04-13 02:55:58
○ 2026-07-04 10:41:58

○NSdns3.easydns.ca2015-08-02 → 2017-04-19 · 4 obs

● 2015-08-02 08:54:18
● 2017-04-19 23:27:00
○ 2026-04-13 02:55:58
○ 2026-07-04 10:41:58

●NSns1019.ui-dns.de2026-04-13 → 2026-07-04 · 3 obs

○ 2017-04-19 23:27:00
● 2026-04-13 02:55:58
● 2026-07-04 10:41:58

●NSns1080.ui-dns.biz2026-04-13 → 2026-07-04 · 3 obs

○ 2017-04-19 23:27:00
● 2026-04-13 02:55:58
● 2026-07-04 10:41:58

●NSns1123.ui-dns.com2026-04-13 → 2026-07-04 · 3 obs

○ 2017-04-19 23:27:00
● 2026-04-13 02:55:58
● 2026-07-04 10:41:58

●NSns1126.ui-dns.org2026-04-13 → 2026-07-04 · 3 obs

○ 2017-04-19 23:27:00
● 2026-04-13 02:55:58
● 2026-07-04 10:41:58

●MXcertusmail-com.mail.protection.outlook.com2026-04-13 → 2026-07-04 · 3 obs

○ 2017-04-19 23:27:00
● 2026-04-13 02:55:58
● 2026-07-04 10:41:58

○MXwsq-1.inbound15.mxlogic.net2015-08-02 → 2016-02-24 · 4 obs

● 2015-08-02 08:54:18
● 2016-02-24 11:37:36
○ 2017-04-19 23:27:00
○ 2026-07-04 10:41:58

○MXwsq-1.inbound15.mxlogicmx.net2015-08-02 → 2016-02-24 · 4 obs

● 2015-08-02 08:54:18
● 2016-02-24 11:37:36
○ 2017-04-19 23:27:00
○ 2026-07-04 10:41:58

○MXwsq-1.mx10.pef.luxsci.com2017-04-19 → 2017-04-19 · 4 obs

○ 2016-02-24 11:37:36
● 2017-04-19 23:27:00
○ 2026-04-13 02:55:58
○ 2026-07-04 10:41:58

○MXwsq-1.mx20.pef.luxsci.com2017-04-19 → 2017-04-19 · 4 obs

○ 2016-02-24 11:37:36
● 2017-04-19 23:27:00
○ 2026-04-13 02:55:58
○ 2026-07-04 10:41:58

○A216.220.40.2482015-08-02 → 2016-02-24 · 4 obs

● 2015-08-02 08:54:18
● 2016-02-24 11:37:36
○ 2017-04-19 23:27:00
○ 2026-07-04 10:41:58

●A2607:f1c0:100f:f000::2002026-04-13 → 2026-07-04 · 3 obs

○ 2017-04-19 23:27:00
● 2026-04-13 02:55:58
● 2026-07-04 10:41:58

○A64.68.200.442017-04-19 → 2017-04-19 · 4 obs

○ 2016-02-24 11:37:36
● 2017-04-19 23:27:00
○ 2026-04-13 02:55:58
○ 2026-07-04 10:41:58

●A74.208.236.1032026-04-13 → 2026-07-04 · 3 obs

○ 2017-04-19 23:27:00
● 2026-04-13 02:55:58
● 2026-07-04 10:41:58

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	g.gtld-servers.net, i.gtld-servers.net, c.gtld-servers.net, b.gtld-servers.net...	-
certusmail.com	ns1019.ui-dns.de, ns1080.ui-dns.biz, ns1126.ui-dns.org, ns1123.ui-dns.com	2 records

✅ Authoritative Response

Server:217.160.82.123

NS records: ns1019.ui-dns.de, ns1080.ui-dns.biz, ns1126.ui-dns.org, ns1123.ui-dns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for certusmail.com (unsigned zone)

⏱️ Timing

Total: 597ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`74.208.236.103`
AAAA	1	`2607:f1c0:100f:f000::200`
NS	4	`ns1080.ui-dns.biz, ns1019.ui-dns.de...`
MX	1	`certusmail-com.mail.protection.outlook.c`
TXT	2	`v=verifydomain MS=6746138, v=spf1 include:_netblocks1.luxsci.com in`
SOA	1	`ns1126.ui-dns.org hostmaster.1und1.com`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1123.ui-dns.com, ns1123.ui-dns.com)

Analysis

IP Addresses

certusmail.com points to the IP addresses 74.208.236.103 and 2607:f1c0:100f:f000::200

Additional host names — gissv.com, joinhw.com, naelb.net and two others — share IP numbers with certusmail.com.

Name Servers

certusmail.com has four authoritative name servers: ns1080.ui-dns.biz, ns1123.ui-dns.com, ns1019.ui-dns.de and ns1126.ui-dns.org.

The name servers of certusmail.com overlap at least partially with those of other domains — among them connecth.com, cm-card.de, haus-veronika.net and two more.

These name servers commonly appear in delegations together with ns1126.ui-dns.biz, ns1126.ui-dns.com, ns1126.ui-dns.de and 7 other.

Each of the four hosts ns1080.ui-dns.biz, ns1123.ui-dns.com, ns1019.ui-dns.de and ns1126.ui-dns.org has two IP addresses. ns1080.ui-dns.biz points to 217.160.81.80 and 2001:8d8:fe:53:0:d9a0:5150:100. ns1123.ui-dns.com points to 217.160.82.123 and 2001:8d8:fe:53:0:d9a0:527b:100. ns1019.ui-dns.de points to 217.160.80.19 and 2001:8d8:fe:53:0:d9a0:5013:100. ns1126.ui-dns.org points to 217.160.83.126 and 2001:8d8:fe:53:0:d9a0:537e:100.

Mail Servers

certusmail.com has one mail server: certusmail-com.mail.protection.outlook.com.

certusmail-com.mail.protection.outlook.com points to 8 IP numbers: 52.101.177.0, 52.101.177.1, 52.101.177.2 and 5 other.