`pcbdesignschool.com`

DNSSEC	⚠️ Not signed
A	2a04:c00:100::11^{🇬🇧 GNOL-AS2a04:c00::/29}
A	193.93.36.11^{🇬🇧 GNOL-AS193.93.36.0/22 GNOL/USIC Internet Services Ltd UK Network}
NS	`ns10.4ns.co.uk` ⭐ ⚠️ Not in parent delegation
		A	193.93.36.40^{🇬🇧 GNOL-AS193.93.36.0/22 GNOL/USIC Internet Services Ltd UK Network}
			PTR	`tango.4ns.co.uk`
NS	`ns20.usicis.net` ⚠️ Not in zone NS records
		A	193.93.36.119^{🇬🇧 GNOL-AS193.93.36.0/22 GNOL/USIC Internet Services Ltd UK Network}
			PTR	`oscar.4ns.co.uk`
NS	`ns21.usicis.net` ⚠️ Not in zone NS records
		A	193.93.36.118^{🇬🇧 GNOL-AS193.93.36.0/22 GNOL/USIC Internet Services Ltd UK Network}
NS	`ns9.4ns.co.uk` ⚠️ Not in parent delegation
		A	193.93.36.39^{🇬🇧 GNOL-AS193.93.36.0/22 GNOL/USIC Internet Services Ltd UK Network}
MX	`pcbdesignschool-com.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:ca0b::^{🇬🇧 Microsoft2a01:111:f000::/36}
			PTR	`mail-lo2p265cu02300.inbound.protection.outlook.com`
		A	2a01:111:f403:ca0b::1^{🇬🇧 Microsoft2a01:111:f000::/36}
			PTR	`mail-lo3p265cu00301.inbound.protection.outlook.com`
		A	2a01:111:f403:ca0b::2^{🇬🇧 Microsoft2a01:111:f000::/36}
			PTR	`mail-lo0p265cu00202.inbound.protection.outlook.com`
		A	2a01:111:f403:ca1a::1^{🇬🇧 Microsoft2a01:111:f000::/36}
			PTR	`mail-cwxp265cu00601.inbound.protection.outlook.com`
		A	52.101.89.1^{🇬🇧 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-lo0p265cu00201.inbound.protection.outlook.com`
		A	52.101.89.2^{🇬🇧 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-lo3p265cu00302.inbound.protection.outlook.com`
		A	52.101.99.0^{🇬🇧 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-cwxp265cu00600.inbound.protection.outlook.com`
		A	52.101.99.2^{🇬🇧 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-cwxp265cu00502.inbound.protection.outlook.com`
TXT	`v=spf1 a mx ip4:193.93.36.138 include:spf.protection.outlook.com -all`
TXT	`MS=ms82275006`
SOA	`ns10.4ns.co.uk`hostmaster@circuitrypcb.com 2025-07-21 #1

`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=1785831802

Previously MX for

pcbdesignschool.com

Subdomains

www.pcbdesignschool.com

Same first word

pcbdesignschool.com

DNS History

12 records (7 active, 5 former)

●NSns10.4ns.co.uk2026-02-19 → 2026-08-04 · 3 obs

○ 2017-02-10 23:56:02
● 2026-02-19 15:44:26
● 2026-08-04 08:34:58

○NSns1333.hostgator.com2015-07-13 → 2017-02-10 · 4 obs

● 2015-07-13 15:39:16
● 2017-02-10 23:56:02
○ 2026-02-19 15:44:26
○ 2026-08-04 08:34:58

○NSns1334.hostgator.com2015-07-13 → 2017-02-10 · 4 obs

● 2015-07-13 15:39:16
● 2017-02-10 23:56:02
○ 2026-02-19 15:44:26
○ 2026-08-04 08:34:58

●NSns20.usicis.net2026-02-19 → 2026-08-04 · 3 obs

○ 2017-02-10 23:56:02
● 2026-02-19 15:44:26
● 2026-08-04 08:34:58

●NSns21.usicis.net2026-02-19 → 2026-08-04 · 3 obs

○ 2017-02-10 23:56:02
● 2026-02-19 15:44:26
● 2026-08-04 08:34:58

○NSns6449.hostgator.com2015-07-13 → 2017-02-10 · 4 obs

● 2015-07-13 15:39:16
● 2017-02-10 23:56:02
○ 2026-02-19 15:44:26
○ 2026-08-04 08:34:58

●NSns9.4ns.co.uk2026-02-19 → 2026-08-04 · 3 obs

○ 2017-02-10 23:56:02
● 2026-02-19 15:44:26
● 2026-08-04 08:34:58

●MXpcbdesignschool-com.mail.protection.outlook.com2026-02-19 → 2026-08-04 · 3 obs

○ 2017-02-10 23:56:02
● 2026-02-19 15:44:26
● 2026-08-04 08:34:58

○MXpcbdesignschool.com2015-07-13 → 2017-02-10 · 4 obs

● 2015-07-13 15:39:16
● 2017-02-10 23:56:02
○ 2026-02-19 15:44:26
○ 2026-08-04 08:34:58

○A192.254.233.2002015-07-13 → 2017-02-10 · 4 obs

● 2015-07-13 15:39:16
● 2017-02-10 23:56:02
○ 2026-02-19 15:44:26
○ 2026-08-04 08:34:58

●A193.93.36.112026-02-19 → 2026-08-04 · 3 obs

○ 2017-02-10 23:56:02
● 2026-02-19 15:44:26
● 2026-08-04 08:34:58

●A2a04:c00:100::112026-02-19 → 2026-08-04 · 3 obs

○ 2017-02-10 23:56:02
● 2026-02-19 15:44:26
● 2026-08-04 08:34:58

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
pcbdesignschool.com	ns20.usicis.net, ns21.usicis.net	-

✅ Authoritative Response

Server:193.93.36.118

NS records: ns20.usicis.net, ns21.usicis.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for pcbdesignschool.com (unsigned zone)

⏱️ Timing

Total: 491ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`193.93.36.11`
AAAA	1	`2a04:c00:100::11`
NS	2	`ns9.4ns.co.uk, ns10.4ns.co.uk`
MX	1	`pcbdesignschool-com.mail.protection.outl`
TXT	2	`v=spf1 a mx ip4:193.93.36.138 include:sp, MS=ms82275006`
SOA	1	`ns10.4ns.co.uk hostmaster.circuitrypcb.c`

Analysis

Hierarchy

www.pcbdesignschool.com is a subdomain of pcbdesignschool.com.

IP Addresses

pcbdesignschool.com points to the IP addresses 193.93.36.11 and 2a04:c00:100::11

theemporiumdirect.co.uk, www.akkadian.uk, mail.theemporiumdirect.co.uk plus two other host names have IP numbers in common with pcbdesignschool.com.

Name Servers

Four name servers handle the delegation for pcbdesignschool.com: ns20.usicis.net, ns21.usicis.net, ns10.4ns.co.uk and ns9.4ns.co.uk.

The name servers of pcbdesignschool.com overlap at least partially with those of other domains — among them vinyllettering.org.uk, gjperkins.co.uk, renair.co.uk and two more.

These name servers commonly appear alongside the name servers ns5.4ns.co.uk and ns6.4ns.co.uk.

Four host names, each with one IP address: ns20.usicis.net has 193.93.36.119, ns21.usicis.net has 193.93.36.118, ns10.4ns.co.uk has 193.93.36.40 and ns9.4ns.co.uk has 193.93.36.39.

Mail Servers

pcbdesignschool.com uses one mail server — pcbdesignschool-com.mail.protection.outlook.com.

pcbdesignschool-com.mail.protection.outlook.com has 8 IP addresses: 52.101.89.1, 52.101.89.2, 52.101.99.0 plus 5 more.

pcbdesignschool.com - robtex.com