`esr-uk.com`

DNSSEC	⚠️ Not signed
NS	`ns1.bdm.microsoftonline.com` ⭐
		A	2603:1061:0:700::d0^{🇺🇸 Microsoft2603:1000::/25 MICROSOFT}
			PTR	`ns1-208.azure-dns.com`
		A	13.107.236.208^{🇺🇸 Microsoft13.104.0.0/14 MICROSOFT}
			PTR	`ns1-208.azure-dns.com`
NS	`ns2.bdm.microsoftonline.com`
		A	2620:1ec:8ec:700::d0^{🇺🇸 Microsoft2620:1ec::/36 MICROSOFT}
			PTR	`ns2-208.azure-dns.net`
		A	150.171.21.208^{🇺🇸 Microsoft150.171.0.0/16 MICROSOFT}
			PTR	`ns2-208.azure-dns.net`
NS	`ns3.bdm.microsoftonline.com` ⚠️ Not in parent delegation
		A	2a01:111:4000:700::d0^{🇬🇧 Microsoft2a01:111:4000::/36}
			PTR	`ns3-208.azure-dns.org`
		A	204.14.183.208^{🇺🇸 Microsoft204.14.180.0/22}
			PTR	`ns3-208.azure-dns.org`
NS	`ns4.bdm.microsoftonline.com` ⚠️ Not in parent delegation
		A	2620:1ec:bda:700::d0^{🇺🇸 Microsoft2620:1ec::/36 MICROSOFT}
			PTR	`ns4-208.azure-dns.info`
		A	208.84.5.208^{🇺🇸 Microsoft208.84.0.0/21 MICROSOFT}
			PTR	`ns4-208.azure-dns.info`
MX	`esruk-com0i.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:ca04::^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db3pr0202cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:ca04::1^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db7pr03cu00401.inbound.protection.outlook.com`
		A	2a01:111:f403:ca04::8^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db5pr02cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::2^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-am0pr83cu00402.inbound.protection.outlook.com`
		A	52.101.68.16^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-db4pr02cu00400.inbound.protection.outlook.com`
		A	52.101.68.32^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-db3pr0202cu00200.inbound.protection.outlook.com`
		A	52.101.68.36^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-db5pr02cu00104.inbound.protection.outlook.com`
		A	52.101.73.16^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-as2pr05cu00100.inbound.protection.outlook.com`
TXT	`mscid=gSUqijCte6zUreRDmyDdo2n4i7J3VdIA9kiipnPBDmKDCt+K8BGcziS6Kbgnw9h7R9c3uOl...`
TXT	`v=spf1 include:spf.protection.outlook.com -all`
SOA	`ns1.bdm.microsoftonline.com`azuredns-hostmaster@microsoft.com serial=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=1785129222

Same first word

esr-uk.com

Similar names

e-kurs.ru

e-kurs.no

e-kurs.online

e-kurs.com

e-kurs.com.tr

se-ukr.com

uk-res.com

e-kurs.com.pl

es-kur.com

e-kurs.eu

k-sure.com

res-uk.co.uk

ser-uk.com

kes-ur.ru

sre-uk.com

e-kurs.de

resk-u.ch

r-suke.com

res-uk.com

e-kurs.net

e-kurs.pl

e-krus.gov.pl

DNS History

5 records (5 active, 0 former)

●NSns1.bdm.microsoftonline.com2015-08-15 → 2026-07-27 · 2 obs

● 2015-08-15 18:23:06
● 2026-07-27 05:40:54

●NSns2.bdm.microsoftonline.com2015-08-15 → 2026-07-27 · 2 obs

● 2015-08-15 18:23:06
● 2026-07-27 05:40:54

●NSns3.bdm.microsoftonline.com2015-08-15 → 2026-07-27 · 2 obs

● 2015-08-15 18:23:06
● 2026-07-27 05:40:54

●NSns4.bdm.microsoftonline.com2015-08-15 → 2026-07-27 · 2 obs

● 2015-08-15 18:23:06
● 2026-07-27 05:40:54

●MXesruk-com0i.mail.protection.outlook.com2015-08-15 → 2026-07-27 · 2 obs

● 2015-08-15 18:23:06
● 2026-07-27 05:40:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
esr-uk.com	ns1.bdm.microsoftonline.com, ns2.bdm.microsoftonline.com	4 records

✅ Authoritative Response

Server:13.107.236.208

NS records: ns1.bdm.microsoftonline.com, ns2.bdm.microsoftonline.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for esr-uk.com (unsigned zone)

⏱️ Timing

Total: 150ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	4	`ns1.bdm.microsoftonline.com, ns2.bdm.microsoftonline.com...`
MX	1	`esruk-com0i.mail.protection.outlook.com`
TXT	2	`mscid=gSUqijCte6zUreRDmyDdo2n4i7J3VdIA9k, v=spf1 include:spf.protection.outlook.co`
SOA	1	`ns1.bdm.microsoftonline.com azuredns-hos`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns1.bdm.microsoftonline.com, ns1.bdm.microsoftonline.com, ns2.bdm.microsoftonline.com...)

Analysis

Name Servers

Four name servers handle the delegation for esr-uk.com: ns1.bdm.microsoftonline.com, ns2.bdm.microsoftonline.com, ns3.bdm.microsoftonline.com and ns4.bdm.microsoftonline.com.

esr-uk.com has at least partial name server overlap with other domains, such as bildungshub.wien, 909luxurywheels.com, energold.com.br and two others.

ns1.bdm.microsoftonline.com, ns2.bdm.microsoftonline.com, ns3.bdm.microsoftonline.com and ns4.bdm.microsoftonline.com all point to exactly two IP numbers each: ns1.bdm.microsoftonline.com → 13.107.236.208 and 2603:1061:0:700::d0; ns2.bdm.microsoftonline.com → 150.171.21.208 and 2620:1ec:8ec:700::d0; ns3.bdm.microsoftonline.com → 204.14.183.208 and 2a01:111:4000:700::d0; ns4.bdm.microsoftonline.com → 208.84.5.208 and 2620:1ec:bda:700::d0.

Mail Servers

esr-uk.com uses one mail server — esruk-com0i.mail.protection.outlook.com.

esruk-com0i.mail.protection.outlook.com has 8 IP addresses: 52.101.68.16, 52.101.68.32, 52.101.68.36 plus 5 more.

esr-uk.com - robtex.com

esr-uk.com

com

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

Name Servers

Mail Servers

`esr-uk.com`

`com`