webmail.sourcefour.com - dns.ninja

webmail.sourcefour.com

DNSSEC⚠️ Not signed
A2606:4700:3035::ac43:91f2🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::6815:57cb🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.87.203Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.145.242🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.87.203, 172.67.145.242
IPv6 hints2606:4700:3035::ac43:91f2, 2606:4700:3037::6815:57cb
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=69, name=cloudflare-ech.com

sourcefour.com

DNSSEC⚠️ Not signed
A2606:4700:3035::ac43:91f2🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::6815:57cb🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.87.203Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.145.242🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NScory.ns.cloudflare.com ⭐
NSsue.ns.cloudflare.com
MXsourcefour-com.mail.protection.outlook.com ⭐
TXTMS=ms38069696
TXTv=DMARC1; p=quarantine; rua=mailto:dmarc@resolution-it.com;
TXTv=spf1 include:spf.protection.outlook.com include:servers.mcsv.net -all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.87.203, 172.67.145.242
IPv6 hints2606:4700:3035::ac43:91f2, 2606:4700:3037::6815:57cb
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=69, name=cloudflare-ech.com
SOAcory.ns.cloudflare.comdns@cloudflare.com serial=2404256319

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DNS History

5 records (4 active, 1 former)

20162017201820192020202120222023202420252026A104.21.87.203172.67.145.2422606:4700:3035::ac43:91f22606:4700:3037::6815:57cb207.173.39.172
●A104.21.87.2032026-06-12 → 2026-06-12 · 2 obs
○ 2016-04-27 04:17:08
● 2026-06-12 18:34:50
●A172.67.145.2422026-06-12 → 2026-06-12 · 2 obs
○ 2016-04-27 04:17:08
● 2026-06-12 18:34:50
○A207.173.39.1722015-07-18 → 2016-04-27 · 3 obs
● 2015-07-18 09:24:44
● 2016-04-27 04:17:08
○ 2026-06-12 18:34:50
●A2606:4700:3035::ac43:91f22026-06-12 → 2026-06-12 · 2 obs
○ 2016-04-27 04:17:08
● 2026-06-12 18:34:50
●A2606:4700:3037::6815:57cb2026-06-12 → 2026-06-12 · 2 obs
○ 2016-04-27 04:17:08
● 2026-06-12 18:34:50

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comg.gtld-servers.net, d.gtld-servers.net, f.gtld-servers.net, h.gtld-servers.net...-
sourcefour.comsue.ns.cloudflare.com, cory.ns.cloudflare.com12 records

✅ Authoritative Response

Server:172.64.33.93

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: 154ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.87.203, 172.67.145.242
AAAA22606:4700:3037::6815:57cb, 2606:4700:3035::ac43:91f2
HTTPS1{"priority":1,"target":".","alpn":["h3",

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

webmail.sourcefour.com points to four IP numbers: 104.21.87.203, 172.67.145.242, 2606:4700:3035::ac43:91f2 and 2606:4700:3037::6815:57cb.

ilgiustoclima.it, www.samh.co.th, www.protonbasic.co.uk plus two other host names have IP numbers in common with webmail.sourcefour.com.