hostmaster.browsercheck.org - robtex.com

hostmaster.browsercheck.org

DNSSEC⚠️ Not signed
A2606:4700:3031::ac43:b8ef🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::6815:1321🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.19.33Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.184.239🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.19.33, 172.67.184.239
IPv6 hints2606:4700:3031::ac43:b8ef, 2606:4700:3037::6815:1321
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=216, name=cloudflare-ech.com

browsercheck.org

DNSSEC⚠️ Not signed
A2606:4700:3031::ac43:b8ef🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::6815:1321🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.19.33Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.184.239🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSjake.ns.cloudflare.com ⭐
NSkay.ns.cloudflare.com
MXcolabora.net ⭐
TXTv=spf1 a mx -all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.19.33, 172.67.184.239
IPv6 hints2606:4700:3031::ac43:b8ef, 2606:4700:3037::6815:1321
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=216, name=cloudflare-ech.com
SOAjake.ns.cloudflare.comdns@cloudflare.com serial=2399136185

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DNS History

16 records (4 active, 12 former)

20162017201820192020202120222023202420252026NSns1.systemdns.comns2.systemdns.comns3.systemdns.comMXcolabora.netA104.21.19.33172.67.184.2392606:4700:3031::ac43:b8ef2606:4700:3037::6815:1321188.114.96.0188.114.97.02a06:98c1:3120::2a06:98c1:3121::64.34.184.3269.172.201.21769.174.244.146CNAMEbrowsercheck.org
○NSns1.systemdns.com2015-11-04 → 2016-04-16 · 4 obs
● 2015-11-04 11:39:46
● 2016-04-16 08:35:26
○ 2026-03-30 15:32:04
○ 2026-04-04 07:07:16
○NSns2.systemdns.com2015-11-04 → 2016-04-16 · 4 obs
● 2015-11-04 11:39:46
● 2016-04-16 08:35:26
○ 2026-03-30 15:32:04
○ 2026-04-04 07:07:16
○NSns3.systemdns.com2015-11-04 → 2016-04-16 · 4 obs
● 2015-11-04 11:39:46
● 2016-04-16 08:35:26
○ 2026-03-30 15:32:04
○ 2026-04-04 07:07:16
○MXcolabora.net2015-11-04 → 2016-04-16 · 4 obs
● 2015-11-04 11:39:46
● 2016-04-16 08:35:26
○ 2026-03-30 15:32:04
○ 2026-04-04 07:07:16
●A104.21.19.332026-03-30 → 2026-04-04 · 3 obs
○ 2016-09-12 14:17:06
● 2026-03-30 15:32:04
● 2026-04-04 07:07:16
●A172.67.184.2392026-03-30 → 2026-04-04 · 3 obs
○ 2016-09-12 14:17:06
● 2026-03-30 15:32:04
● 2026-04-04 07:07:16
○A188.114.96.02026-03-30 → 2026-04-04 · 2 obs
○ 2026-03-30 15:32:04
○ 2026-04-04 07:07:16
○A188.114.97.02026-03-30 → 2026-04-04 · 2 obs
○ 2026-03-30 15:32:04
○ 2026-04-04 07:07:16
●A2606:4700:3031::ac43:b8ef2026-03-30 → 2026-04-04 · 3 obs
○ 2016-09-12 14:17:06
● 2026-03-30 15:32:04
● 2026-04-04 07:07:16
●A2606:4700:3037::6815:13212026-03-30 → 2026-04-04 · 3 obs
○ 2016-09-12 14:17:06
● 2026-03-30 15:32:04
● 2026-04-04 07:07:16
○A2a06:98c1:3120::2026-03-30 → 2026-04-04 · 2 obs
○ 2026-03-30 15:32:04
○ 2026-04-04 07:07:16
○A2a06:98c1:3121::2026-03-30 → 2026-04-04 · 2 obs
○ 2026-03-30 15:32:04
○ 2026-04-04 07:07:16
○A64.34.184.322015-11-04 → 2016-04-16 · 5 obs
○ 2015-05-02 12:53:00
● 2015-11-04 11:39:46
● 2016-04-16 08:35:26
○ 2016-09-12 14:17:06
○ 2026-04-04 07:07:16
○A69.172.201.2172016-09-12 → 2016-09-12 · 4 obs
○ 2016-04-16 08:35:26
● 2016-09-12 14:17:06
○ 2026-03-30 15:32:04
○ 2026-04-04 07:07:16
○A69.174.244.1462015-05-02 → 2015-05-02 · 3 obs
● 2015-05-02 12:53:00
○ 2026-03-30 15:32:04
○ 2026-04-04 07:07:16
○CNAMEbrowsercheck.org2015-05-02 → 2016-04-16 · 4 obs
● 2015-05-02 12:53:00
● 2016-04-16 08:35:26
○ 2016-09-12 14:17:06
○ 2026-04-04 07:07:16

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
orgd0.org.afilias-nst.org, b0.org.afilias-nst.org-
browsercheck.orgkay.ns.cloudflare.com, jake.ns.cloudflare.com-

✅ Authoritative Response

Server:172.64.32.125

NS records: kay.ns.cloudflare.com, jake.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for browsercheck.org (unsigned zone)

⏱️ Timing

Total: 2220ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.184.239, 104.21.19.33
AAAA22606:4700:3031::ac43:b8ef, 2606:4700:3037::6815:1321
HTTPS1{"priority":1,"target":".","alpn":["h3",

Analysis

IP Addresses

hostmaster.browsercheck.org maps to four IP numbers: 2606:4700:3031::ac43:b8ef, 2606:4700:3037::6815:1321, 104.21.19.33 and 172.67.184.239.

Other host names, for instance www.wunderkraut.com, themuddytire.com, www.gayromeo.com, cosmoland.com.tr and browsercheck.org share IP numbers with hostmaster.browsercheck.org.