`prepdoctors.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::6815:1522^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3034::ac43:c459^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.21.34^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.196.89^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`emma.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a70^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`emma.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c070^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`emma.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2070^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`emma.ns.cloudflare.com`
		A	108.162.192.112^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`emma.ns.cloudflare.com`
		A	172.64.32.112^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`emma.ns.cloudflare.com`
		A	173.245.58.112^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`emma.ns.cloudflare.com`
NS	`tom.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b93^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tom.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c193^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`tom.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2193^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`tom.ns.cloudflare.com`
		A	108.162.193.147^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tom.ns.cloudflare.com`
		A	172.64.33.147^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tom.ns.cloudflare.com`
		A	173.245.59.147^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tom.ns.cloudflare.com`
MX	`prepdoctors-com.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:c942::^{🇨🇦 Microsoft2a01:111:f000::/36}
			PTR	`mail-yt5pr01cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:c942::1^{🇨🇦 Microsoft2a01:111:f000::/36}
			PTR	`mail-yt3pr01cu00701.inbound.protection.outlook.com`
		A	2a01:111:f403:c944::^{🇨🇦 Microsoft2a01:111:f000::/36}
			PTR	`mail-yqzpr01cu00900.inbound.protection.outlook.com`
		A	2a01:111:f403:c944::1^{🇨🇦 Microsoft2a01:111:f000::/36}
			PTR	`mail-yqzpr01cu01001.inbound.protection.outlook.com`
		A	52.101.190.0^{🇨🇦 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-yt5pr01cu00100.inbound.protection.outlook.com`
		A	52.101.190.2^{🇨🇦 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-yt3pr01cu00602.inbound.protection.outlook.com`
		A	52.101.190.3^{🇨🇦 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-yt6pr01cu00103.inbound.protection.outlook.com`
		A	52.101.192.0^{🇨🇦 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-yqzpr01cu00900.inbound.protection.outlook.com`
TXT	`1password-site-verification=FFKVULGPAVDZZL57WS2U6H46OA`
TXT	`MS=ms34024053`
TXT	`google-site-verification=6Zqiqon8SqDdnkx-0SNPE_Fm8j0Juko4Ax9bKpKRrzw`
TXT	`google-site-verification=TmCe0xCf7w5ciXSJW5C9C5F9r55S17d29SvU-wwDxJA`
TXT	`google-site-verification=yUc_MdWzBPygfSwztQLIc5isGTzrsO_cprjO_AscNlQ`
TXT	`sjqp3bsr1ckcacak0638ipqvrg`
TXT	`v=spf1 include:_spf.google.com include:spf.zoho.com include:transmail.net inc...`
TXT	`zoho-verification=zb70577366.zmverify.zoho.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.21.34, 172.67.196.89
		IPv6	2606:4700:3031::6815:1522, 2606:4700:3034::ac43:c459
SOA	`emma.ns.cloudflare.com`dns@cloudflare.com serial=2399443054

`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=1774367522

Same first word

prepdoctors.com

prepdoctors.ca

Similar names

pcdropstore.com

cordstopper.co.uk

doctorsprep.com

DNS History

14 records (7 active, 7 former)

●NSemma.ns.cloudflare.com2026-02-24 → 2026-03-24 · 3 obs

○ 2020-03-03 06:41:56
● 2026-02-24 11:54:40
● 2026-03-24 15:54:50

○NSns17.domaincontrol.com2015-08-10 → 2020-03-03 · 4 obs

● 2015-08-10 17:30:36
● 2020-03-03 06:41:56
○ 2026-02-24 11:54:40
○ 2026-03-24 15:54:50

○NSns18.domaincontrol.com2015-08-10 → 2020-03-03 · 4 obs

● 2015-08-10 17:30:36
● 2020-03-03 06:41:56
○ 2026-02-24 11:54:40
○ 2026-03-24 15:54:50

●NStom.ns.cloudflare.com2026-02-24 → 2026-03-24 · 3 obs

○ 2020-03-03 06:41:56
● 2026-02-24 11:54:40
● 2026-03-24 15:54:50

○MXmailstore1.secureserver.net2015-08-10 → 2020-03-03 · 4 obs

● 2015-08-10 17:30:36
● 2020-03-03 06:41:56
○ 2026-02-24 11:54:40
○ 2026-03-24 15:54:50

●MXprepdoctors-com.mail.protection.outlook.com2026-02-24 → 2026-03-24 · 3 obs

○ 2020-03-03 06:41:56
● 2026-02-24 11:54:40
● 2026-03-24 15:54:50

○MXsmtp.secureserver.net2015-08-10 → 2020-03-03 · 4 obs

● 2015-08-10 17:30:36
● 2020-03-03 06:41:56
○ 2026-02-24 11:54:40
○ 2026-03-24 15:54:50

●A104.21.21.342026-02-24 → 2026-03-24 · 3 obs

○ 2020-03-03 06:41:56
● 2026-02-24 11:54:40
● 2026-03-24 15:54:50

●A172.67.196.892026-02-24 → 2026-03-24 · 3 obs

○ 2020-03-03 06:41:56
● 2026-02-24 11:54:40
● 2026-03-24 15:54:50

○A184.168.221.392015-08-10 → 2016-04-02 · 4 obs

● 2015-08-10 17:30:36
● 2016-04-02 04:28:38
○ 2016-09-12 01:08:06
○ 2026-03-24 15:54:50

●A2606:4700:3031::6815:15222026-02-24 → 2026-03-24 · 3 obs

○ 2020-03-03 06:41:56
● 2026-02-24 11:54:40
● 2026-03-24 15:54:50

●A2606:4700:3034::ac43:c4592026-02-24 → 2026-03-24 · 3 obs

○ 2020-03-03 06:41:56
● 2026-02-24 11:54:40
● 2026-03-24 15:54:50

○A50.63.202.232016-09-12 → 2017-04-09 · 5 obs

○ 2016-04-02 04:28:38
● 2016-09-12 01:08:06
● 2017-04-09 12:47:00
○ 2020-03-03 06:41:56
○ 2026-03-24 15:54:50

○A50.63.202.472020-03-03 → 2020-03-03 · 4 obs

○ 2017-04-09 12:47:00
● 2020-03-03 06:41:56
○ 2026-02-24 11:54:40
○ 2026-03-24 15:54:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	i.gtld-servers.net, e.gtld-servers.net, a.gtld-servers.net, m.gtld-servers.net...	-
prepdoctors.com	emma.ns.cloudflare.com, tom.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.147

NS records: emma.ns.cloudflare.com, tom.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for prepdoctors.com (unsigned zone)

⏱️ Timing

Total: 315ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.21.34, 172.67.196.89`
AAAA	2	`2606:4700:3031::6815:1522, 2606:4700:3034::ac43:c459`
NS	2	`emma.ns.cloudflare.com, tom.ns.cloudflare.com`
MX	1	`prepdoctors-com.mail.protection.outlook.`
TXT	8	`1password-site-verification=FFKVULGPAVDZ, MS=ms34024053...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`emma.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (emma.ns.cloudflare.com, emma.ns.cloudflare.com, emma.ns.cloudflare.com...)

Analysis

IP Addresses

prepdoctors.com points to four IP numbers: 2606:4700:3031::6815:1522, 2606:4700:3034::ac43:c459, 104.21.21.34 and 172.67.196.89.

Other host names, for instance sharedowns.com, 7penna.biz, nyrkkisaanto.fi, cetsunis.com and sbppl.in share IP numbers with prepdoctors.com.

Name Servers

Delegation for prepdoctors.com rests with two name servers, emma.ns.cloudflare.com and tom.ns.cloudflare.com.

prepdoctors.com shares the same name server setup as other domains, including mossahotel.gr, eurodentica.gr, sunsetnapa.com, laurendenney.com and chania-culture.gr.

prepdoctors.com at least partially shares name servers with other domains, for instance ims-server.com, snowvan.xyz, mdmorton.com, fdmr.stream and tricomposite.com.au.

These name servers are commonly used with leif.ns.cloudflare.com and adelaide.ns.cloudflare.com.

Host names with six IP numbers: emma.ns.cloudflare.com points to: 2606:4700:50::adf5:3a70, 2803:f800:50::6ca2:c070, 2a06:98c1:50::ac40:2070, 108.162.192.112, 172.64.32.112 and 173.245.58.112. tom.ns.cloudflare.com points to: 2606:4700:58::adf5:3b93, 2803:f800:50::6ca2:c193, 2a06:98c1:50::ac40:2193, 108.162.193.147, 172.64.33.147 and 173.245.59.147.

Mail Servers

prepdoctors.com is handled by a single mail server, prepdoctors-com.mail.protection.outlook.com.

prepdoctors-com.mail.protection.outlook.com resolves to eight IP addresses: 2a01:111:f403:c942::, 2a01:111:f403:c942::1, 2a01:111:f403:c944::, 2a01:111:f403:c944::1, 52.101.190.0, 52.101.190.2, 52.101.190.3 and 52.101.192.0.

prepdoctors.com - robtex.com

prepdoctors.com

com

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

IP Addresses

Name Servers

Mail Servers

`prepdoctors.com`

`com`