`securityserious.com`

DNSSEC	⚠️ Not signed
A	139.59.186.134^{🇬🇧 DIGITALOCEAN139.59.176.0/20 DigitalOcean}
		PTR	`554648.cloudwaysapps.com`
NS	`ns1.livedns.co.uk` ⭐
		A	2001:8d8:fe:53:fa::1^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns1.slndns.co.uk`
		A	217.160.81.244^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns1.livedns.co.uk`
NS	`ns2.livedns.co.uk`
		A	2001:8d8:fe:53:fa::2^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns2.slndns.co.uk`
		A	217.160.82.244^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns2.livedns.co.uk`
NS	`ns3.livedns.co.uk`
		A	2607:f1c0:fe:53:185:132:35:244^{🇺🇸 IONOS-ANYCAST2607:f1c0:fe::/47 AS8560 global anycast services (more specific) 1&1 IONOS Inc. 701 Lee Rd, Suite 300 Chesterbrook, PA 19087 US}
			PTR	`ns3.livedns.co.uk`
		A	185.132.35.244^{🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS)}
			PTR	`ns3.livedns.co.uk`
MX	`eu-smtp-inbound-1.mimecast.com` ⭐
		A	91.220.42.201^{🇬🇧 MIMECAST-UK91.220.42.0/24 MIMECAST-NET2}
			PTR	`eu-smtp-inbound-1.mimecast.com`
			PTR	`eu-smtp-inbound-2.mimecast.com`
		A	91.220.42.211^{🇬🇧 MIMECAST-UK91.220.42.0/24 MIMECAST-NET2}
			PTR	`eu-smtp-inbound-1.mimecast.com`
			PTR	`eu-smtp-inbound-2.mimecast.com`
		A	91.220.42.241^{🇬🇧 MIMECAST-UK91.220.42.0/24 MIMECAST-NET2}
			PTR	`eu-smtp-inbound-1.mimecast.com`
			PTR	`eu-smtp-inbound-2.mimecast.com`
		A	195.130.217.201^{🇬🇧 MIMECAST-UK195.130.217.0/24}
			PTR	`eu-smtp-inbound-1.mimecast.com`
			PTR	`eu-smtp-inbound-2.mimecast.com`
		A	195.130.217.211^{🇬🇧 MIMECAST-UK195.130.217.0/24}
			PTR	`eu-smtp-inbound-1.mimecast.com`
			PTR	`eu-smtp-inbound-2.mimecast.com`
		A	195.130.217.241^{🇬🇧 MIMECAST-UK195.130.217.0/24}
			PTR	`eu-smtp-inbound-1.mimecast.com`
			PTR	`eu-smtp-inbound-2.mimecast.com`
MX	`eu-smtp-inbound-2.mimecast.com` ⭐
		A	91.220.42.201^{🇬🇧 MIMECAST-UK91.220.42.0/24 MIMECAST-NET2}
			PTR	`eu-smtp-inbound-1.mimecast.com`
			PTR	`eu-smtp-inbound-2.mimecast.com`
		A	91.220.42.211^{🇬🇧 MIMECAST-UK91.220.42.0/24 MIMECAST-NET2}
			PTR	`eu-smtp-inbound-1.mimecast.com`
			PTR	`eu-smtp-inbound-2.mimecast.com`
		A	91.220.42.241^{🇬🇧 MIMECAST-UK91.220.42.0/24 MIMECAST-NET2}
			PTR	`eu-smtp-inbound-1.mimecast.com`
			PTR	`eu-smtp-inbound-2.mimecast.com`
		A	195.130.217.201^{🇬🇧 MIMECAST-UK195.130.217.0/24}
			PTR	`eu-smtp-inbound-1.mimecast.com`
			PTR	`eu-smtp-inbound-2.mimecast.com`
		A	195.130.217.211^{🇬🇧 MIMECAST-UK195.130.217.0/24}
			PTR	`eu-smtp-inbound-1.mimecast.com`
			PTR	`eu-smtp-inbound-2.mimecast.com`
		A	195.130.217.241^{🇬🇧 MIMECAST-UK195.130.217.0/24}
			PTR	`eu-smtp-inbound-1.mimecast.com`
			PTR	`eu-smtp-inbound-2.mimecast.com`
TXT	`v=spf1 include:spf.protection.outlook.com include:_netblocks.mimecast.com -all`
SOA	`ns1.livedns.co.uk`admin@securityserious.com serial=1592580710

`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=1771291435

Subdomains

www.securityserious.com

Same first word

securityserious.com

Similar names

serioussecurity.co.uk

serioussecurity.com.au

serioussecurity.net

DNS History

11 records (6 active, 5 former)

●NSns1.livedns.co.uk2016-12-15 → 2026-03-23 · 2 obs

● 2016-12-15 03:07:00
● 2026-03-23 02:48:14

●NSns2.livedns.co.uk2016-12-15 → 2026-03-23 · 2 obs

● 2016-12-15 03:07:00
● 2026-03-23 02:48:14

●NSns3.livedns.co.uk2016-12-15 → 2026-03-23 · 2 obs

● 2016-12-15 03:07:00
● 2026-03-23 02:48:14

●MXeu-smtp-inbound-1.mimecast.com2026-02-15 → 2026-03-23 · 3 obs

○ 2017-08-08 10:52:02
● 2026-02-15 07:49:06
● 2026-03-23 02:48:14

●MXeu-smtp-inbound-2.mimecast.com2026-02-15 → 2026-03-23 · 3 obs

○ 2017-08-08 10:52:02
● 2026-02-15 07:49:06
● 2026-03-23 02:48:14

○MXmailserver.securityserious.com2016-12-15 → 2017-08-08 · 4 obs

● 2016-12-15 03:07:00
● 2017-08-08 10:52:02
○ 2026-02-15 07:49:06
○ 2026-03-23 02:48:14

○A107.154.112.252017-08-08 → 2017-08-08 · 4 obs

○ 2016-12-15 03:07:00
● 2017-08-08 10:52:02
○ 2026-02-15 07:49:06
○ 2026-03-23 02:48:14

○A107.154.115.252017-08-08 → 2017-08-08 · 4 obs

○ 2016-12-15 03:07:00
● 2017-08-08 10:52:02
○ 2026-02-15 07:49:06
○ 2026-03-23 02:48:14

●A139.59.186.1342026-02-15 → 2026-03-23 · 3 obs

○ 2017-08-08 10:52:02
● 2026-02-15 07:49:06
● 2026-03-23 02:48:14

○A192.230.66.1212016-12-15 → 2016-12-15 · 3 obs

● 2016-12-15 03:07:00
○ 2017-08-08 10:52:02
○ 2026-03-23 02:48:14

○A192.230.74.1212016-12-15 → 2016-12-15 · 3 obs

● 2016-12-15 03:07:00
○ 2017-08-08 10:52:02
○ 2026-03-23 02:48:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	e.gtld-servers.net, a.gtld-servers.net, m.gtld-servers.net, k.gtld-servers.net...	-
securityserious.com	ns1.livedns.co.uk, ns2.livedns.co.uk, ns3.livedns.co.uk	-

✅ Authoritative Response

Server:217.160.81.244

NS records: ns1.livedns.co.uk, ns2.livedns.co.uk, ns3.livedns.co.uk

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for securityserious.com (unsigned zone)

⏱️ Timing

Total: 638ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`139.59.186.134`
NS	3	`ns2.livedns.co.uk, ns3.livedns.co.uk...`
MX	2	`eu-smtp-inbound-2.mimecast.com (pri: 10), eu-smtp-inbound-1.mimecast.com (pri: 10)`
TXT	1	`v=spf1 include:spf.protection.outlook.co`
SOA	1	`ns1.livedns.co.uk admin.securityserious.`

Analysis

Hierarchy

securityserious.com is a parent of www.securityserious.com.

IP Addresses

securityserious.com points to a single IP address: 139.59.186.134.

Other host names such as www.securityserious.com, the-hcp.com, octagoncapital.co.uk, cliqgroup.com and lawtonanddawe.com share IP numbers with securityserious.com.