sourcefour.com - dns.ninja

`sourcefour.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::ac43:91f2^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::6815:57cb^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.87.203^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.145.242^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`cory.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b5d^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cory.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c15d^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`cory.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:215d^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`cory.ns.cloudflare.com`
		A	108.162.193.93^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cory.ns.cloudflare.com`
		A	172.64.33.93^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cory.ns.cloudflare.com`
		A	173.245.59.93^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cory.ns.cloudflare.com`
NS	`sue.ns.cloudflare.com`
		A	2606:4700:50::adf5:3a91^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sue.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c091^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`sue.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2091^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`sue.ns.cloudflare.com`
		A	108.162.192.145^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sue.ns.cloudflare.com`
		A	172.64.32.145^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sue.ns.cloudflare.com`
		A	173.245.58.145^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sue.ns.cloudflare.com`
MX	`sourcefour-com.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:c946::5^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-ch4pr21cu00105.inbound.protection.outlook.com`
		A	2a01:111:f403:f802::2^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-sj2pr05cu00202.inbound.protection.outlook.com`
		A	2a01:111:f403:f901::1^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-bl0pr02cu00601.inbound.protection.outlook.com`
		A	2a01:111:f403:f90f::^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-sa9pr04cu00100.inbound.protection.outlook.com`
		A	52.101.9.20^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-bl0pr02cu00604.inbound.protection.outlook.com`
		A	52.101.40.6^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
		A	52.101.41.183^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-byapr04cu00307.inbound.protection.outlook.com`
		A	52.101.194.13^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-ch0pr04cu00605.inbound.protection.outlook.com`
TXT	`MS=ms38069696`
TXT	`v=DMARC1; p=quarantine; rua=mailto:dmarc@resolution-it.com;`
TXT	`v=spf1 include:spf.protection.outlook.com include:servers.mcsv.net -all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.87.203, 172.67.145.242
		IPv6 hints	2606:4700:3033::ac43:91f2, 2606:4700:3035::6815:57cb
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=195, name=cloudflare-ech.com
SOA	`cory.ns.cloudflare.com`dns@cloudflare.com serial=2410338815

`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=1785158197

Subdomains

mail.sourcefour.com

webmail.sourcefour.com

www.sourcefour.com

Same first word

sourcefour.co.uk

sourcefour.in

sourcefour.com

Similar names

foursource.ca

sourceforu.com

foursource.com

foursource.pt

DNS History

18 records (7 active, 11 former)

●NScory.ns.cloudflare.com2026-06-12 → 2026-07-27 · 3 obs

○ 2026-03-30 10:29:58
● 2026-06-12 00:05:00
● 2026-07-27 13:39:08

○NSnick.ns.cloudflare.com2018-07-31 → 2026-03-30 · 5 obs

○ 2017-01-13 09:48:42
● 2018-07-31 01:15:06
● 2026-03-30 10:29:58
○ 2026-06-12 00:05:00
○ 2026-07-27 13:39:08

○NSns1.mediatemple.net2015-07-16 → 2017-01-13 · 4 obs

● 2015-07-16 00:31:10
● 2017-01-13 09:48:42
○ 2018-07-31 01:15:06
○ 2026-07-27 13:39:08

○NSns2.mediatemple.net2015-07-16 → 2017-01-13 · 4 obs

● 2015-07-16 00:31:10
● 2017-01-13 09:48:42
○ 2018-07-31 01:15:06
○ 2026-07-27 13:39:08

○NSsima.ns.cloudflare.com2018-07-31 → 2026-03-30 · 5 obs

○ 2017-01-13 09:48:42
● 2018-07-31 01:15:06
● 2026-03-30 10:29:58
○ 2026-06-12 00:05:00
○ 2026-07-27 13:39:08

●NSsue.ns.cloudflare.com2026-06-12 → 2026-07-27 · 3 obs

○ 2026-03-30 10:29:58
● 2026-06-12 00:05:00
● 2026-07-27 13:39:08

○MXmx1.smtp.exch032.serverdata.net2015-07-16 → 2017-01-13 · 4 obs

● 2015-07-16 00:31:10
● 2017-01-13 09:48:42
○ 2018-07-31 01:15:06
○ 2026-07-27 13:39:08

○MXmx2.smtp.exch032.serverdata.net2015-07-16 → 2017-01-13 · 4 obs

● 2015-07-16 00:31:10
● 2017-01-13 09:48:42
○ 2018-07-31 01:15:06
○ 2026-07-27 13:39:08

●MXsourcefour-com.mail.protection.outlook.com2018-07-31 → 2026-07-27 · 3 obs

○ 2017-01-13 09:48:42
● 2018-07-31 01:15:06
● 2026-07-27 13:39:08

●A104.21.87.2032026-06-12 → 2026-07-27 · 3 obs

○ 2026-03-30 10:29:58
● 2026-06-12 00:05:00
● 2026-07-27 13:39:08

○A146.66.98.1972018-07-31 → 2018-07-31 · 4 obs

○ 2017-01-13 09:48:42
● 2018-07-31 01:15:06
○ 2026-03-30 10:29:58
○ 2026-07-27 13:39:08

○A157.245.160.772026-03-30 → 2026-03-30 · 4 obs

○ 2018-07-31 01:15:06
● 2026-03-30 10:29:58
○ 2026-06-12 00:05:00
○ 2026-07-27 13:39:08

●A172.67.145.2422026-06-12 → 2026-07-27 · 3 obs

○ 2026-03-30 10:29:58
● 2026-06-12 00:05:00
● 2026-07-27 13:39:08

●A2606:4700:3033::ac43:91f22026-07-09 → 2026-07-27 · 3 obs

○ 2026-06-12 18:34:50
● 2026-07-09 10:23:14
● 2026-07-27 13:39:08

●A2606:4700:3035::6815:57cb2026-07-09 → 2026-07-27 · 3 obs

○ 2026-06-12 18:34:50
● 2026-07-09 10:23:14
● 2026-07-27 13:39:08

○A2606:4700:3035::ac43:91f22026-06-12 → 2026-06-12 · 5 obs

○ 2026-03-30 10:29:58
● 2026-06-12 00:05:00
● 2026-06-12 18:34:50
○ 2026-07-09 10:23:14
○ 2026-07-27 13:39:08

○A2606:4700:3037::6815:57cb2026-06-12 → 2026-06-12 · 5 obs

○ 2026-03-30 10:29:58
● 2026-06-12 00:05:00
● 2026-06-12 18:34:50
○ 2026-07-09 10:23:14
○ 2026-07-27 13:39:08

○A64.13.233.72015-07-16 → 2017-01-13 · 4 obs

● 2015-07-16 00:31:10
● 2017-01-13 09:48:42
○ 2018-07-31 01:15:06
○ 2026-07-27 13:39:08

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	c.gtld-servers.net, g.gtld-servers.net, d.gtld-servers.net, b.gtld-servers.net...	-
sourcefour.com	sue.ns.cloudflare.com, cory.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.93

NS records: sue.ns.cloudflare.com, cory.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sourcefour.com (unsigned zone)

⏱️ Timing

Total: 125ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.87.203, 172.67.145.242`
AAAA	2	`2606:4700:3035::6815:57cb, 2606:4700:3033::ac43:91f2`
NS	2	`cory.ns.cloudflare.com, sue.ns.cloudflare.com`
MX	1	`sourcefour-com.mail.protection.outlook.c`
TXT	3	`MS=ms38069696, v=DMARC1; p=quarantine; rua=mailto:dmarc...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`cory.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

sourcefour.com sits above mail.sourcefour.com, webmail.sourcefour.com and www.sourcefour.com in the domain hierarchy.

IP Addresses

sourcefour.com directs to four IP numbers, which are 104.21.87.203, 172.67.145.242, 2606:4700:3033::ac43:91f2 and 2606:4700:3035::6815:57cb.

Two other host names, along with ciprobet.net, traficdepersoane.ro and geco.com.gr, also share IP numbers with sourcefour.com.

Name Servers

DNS delegation for sourcefour.com points to two name servers: cory.ns.cloudflare.com and sue.ns.cloudflare.com.

sourcefour.com shares its NS records with other domains, for example drumsmith.com, prostoposting.ru, ccldr.net and two others.

There is at least partial name server overlap between sourcefour.com and other domains — globalelement2.digital, cricshop.net, hnyswd.com and two more among them.

The name servers nile.ns.cloudflare.com, raquel.ns.cloudflare.com and jake.ns.cloudflare.com are often found in combination with these name servers.

DNS names with 6 IP addresses:

cory.ns.cloudflare.com has IP addresses 108.162.193.93, 172.64.33.93 and 173.245.59.93, plus 3 other.

sue.ns.cloudflare.com has IP addresses 108.162.192.145, 172.64.32.145 and 173.245.58.145, plus 3 other.

Mail Servers

The sole mail server for sourcefour.com is sourcefour-com.mail.protection.outlook.com.

With 8 IP addresses total, sourcefour-com.mail.protection.outlook.com resolves to 52.101.9.20, 52.101.40.6, 52.101.41.183 and 5 others.