🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`coreinterviewprep.com`

DNSSEC	⚠️ Not signed
A	216.24.57.1^{🇺🇸 AS397273216.24.57.0/24 655 5th St 19 San Francisco CA 94107 United States}
		PTR	`ip-216-24-57-1.ingress.render.com`
NS	`ns1121.ui-dns.de` ⭐
		A	2607:f1c0:fe:53:185:132:32:121^{🇺🇸 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	`ns1121.ui-dns.de`
		A	185.132.32.121^{🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS)}
			PTR	`ns1121.ui-dns.de`
NS	`ns1059.ui-dns.com`
		A	2607:f1c0:fe:53:185:132:34:59^{🇺🇸 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	`ns1059.ui-dns.com`
		A	185.132.34.59^{🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS)}
			PTR	`ns1059.ui-dns.com`
NS	`ns1105.ui-dns.biz`
		A	2607:f1c0:fe:53:185:132:33:105^{🇺🇸 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	`ns1105.ui-dns.biz`
		A	185.132.33.105^{🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS)}
			PTR	`ns1105.ui-dns.biz`
NS	`ns1105.ui-dns.org`
		A	2607:f1c0:fe:53:185:132:35:105^{🇺🇸 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	`ns1105.ui-dns.org`
		A	185.132.35.105^{🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS)}
			PTR	`ns1105.ui-dns.org`
MX	`mx00.ionos.com` ⭐
		A	74.208.114.65^{🇺🇸 IONOS-AS74.208.0.0/16 IONOS Inc.}
			PTR	`mx00.perfora.net`
MX	`mx01.ionos.com` ⭐
		A	74.208.114.66^{🇺🇸 IONOS-AS74.208.0.0/16 IONOS Inc.}
			PTR	`mx01.perfora.net`
TXT	`v=spf1 include:_spf-us.ionos.com ~all`
SOA	`ns1121.ui-dns.de`hostmaster@1und1.com 2017-06-01 #9

`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=1791546169

Same first word

coreinterviewprep.com

Previous names

Next names

DNS History

7 records (7 active, 0 former)

●NSns1059.ui-dns.com2026-09-10 → 2026-10-09 · 2 obs

● 2026-09-10 01:55:02
● 2026-10-09 12:08:08

●NSns1105.ui-dns.biz2026-09-10 → 2026-10-09 · 2 obs

● 2026-09-10 01:55:02
● 2026-10-09 12:08:08

●NSns1105.ui-dns.org2026-09-10 → 2026-10-09 · 2 obs

● 2026-09-10 01:55:02
● 2026-10-09 12:08:08

●NSns1121.ui-dns.de2026-09-10 → 2026-10-09 · 2 obs

● 2026-09-10 01:55:02
● 2026-10-09 12:08:08

●MXmx00.ionos.com2026-09-10 → 2026-10-09 · 2 obs

● 2026-09-10 01:55:02
● 2026-10-09 12:08:08

●MXmx01.ionos.com2026-09-10 → 2026-10-09 · 2 obs

● 2026-09-10 01:55:02
● 2026-10-09 12:08:08

●A216.24.57.12026-09-10 → 2026-10-09 · 2 obs

● 2026-09-10 01:55:02
● 2026-10-09 12:08:08

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	d.gtld-servers.net, e.gtld-servers.net, l.gtld-servers.net, i.gtld-servers.net...	-
coreinterviewprep.com	ns1105.ui-dns.biz, ns1105.ui-dns.org, ns1121.ui-dns.de, ns1059.ui-dns.com	2 records

✅ Authoritative Response

Server:185.132.35.105

NS records: ns1105.ui-dns.biz, ns1105.ui-dns.org, ns1121.ui-dns.de, ns1059.ui-dns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for coreinterviewprep.com (unsigned zone)

⏱️ Timing

Total: 477ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`216.24.57.1`
NS	4	`ns1105.ui-dns.biz, ns1105.ui-dns.org...`
MX	2	`mx01.ionos.com (pri: 10), mx00.ionos.com (pri: 10)`
TXT	1	`v=spf1 include:_spf-us.ionos.com ~all`
SOA	1	`ns1121.ui-dns.de hostmaster.1und1.com`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1059.ui-dns.com, ns1059.ui-dns.com)

Analysis

IP Addresses

coreinterviewprep.com has exactly one IP address — 216.24.57.1.

prospect2portfolio.com, bpmticket.com, joinmorrow.com plus two other host names have IP numbers in common with coreinterviewprep.com.

Name Servers

Four name servers handle the delegation for coreinterviewprep.com: ns1105.ui-dns.biz, ns1059.ui-dns.com, ns1121.ui-dns.de and ns1105.ui-dns.org.

The name servers of coreinterviewprep.com overlap at least partially with those of other domains — among them vhdemo.com, deaurea.fr, glueckskeks.de and two more.

These name servers commonly appear in delegations together with ns1105.ui-dns.de, ns1105.ui-dns.com, ns1121.ui-dns.biz and 7 other.

Each of the four hosts ns1105.ui-dns.biz, ns1059.ui-dns.com, ns1121.ui-dns.de and ns1105.ui-dns.org has two IP addresses. ns1105.ui-dns.biz points to 185.132.33.105 and 2607:f1c0:fe:53:185:132:33:105. ns1059.ui-dns.com points to 185.132.34.59 and 2607:f1c0:fe:53:185:132:34:59. ns1121.ui-dns.de points to 185.132.32.121 and 2607:f1c0:fe:53:185:132:32:121. ns1105.ui-dns.org points to 185.132.35.105 and 2607:f1c0:fe:53:185:132:35:105.

Mail Servers

coreinterviewprep.com uses two mail servers, mx00.ionos.com and mx01.ionos.com.

The mail server setup of coreinterviewprep.com matches that of other domains such as mkpmconsulting.com, ruiqianwang.com, fakconsulting.com and two others.

The mail servers for coreinterviewprep.com overlap at least partially with those of other domains, including hoiums.com and convertu.io.

Both mx00.ionos.com and mx01.ionos.com have a single IP address each — mx00.ionos.com resolves to 74.208.114.65 while mx01.ionos.com resolves to 74.208.114.66.

coreinterviewprep.com - robtex.com