mail.drmikekrantz.com - robtex.com

mail.drmikekrantz.com

DNSSEC⚠️ Not signed
A2606:4700:3035::6815:53f9🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::ac43:b79f🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.83.249Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.183.159🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.83.249, 172.67.183.159
IPv6 hints2606:4700:3035::6815:53f9, 2606:4700:3035::ac43:b79f
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=85, name=cloudflare-ech.com

drmikekrantz.com

DNSSEC⚠️ Not signed
A2606:4700:3035::6815:53f9🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::ac43:b79f🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.83.249Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.183.159🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NScory.ns.cloudflare.com ⭐
NSsima.ns.cloudflare.com
MX_dc-mx.915f381ac5e8.drmikekrantz.com ⭐
TXTv=spf1 ip4:3.216.76.228 +a +mx +ip4:67.225.140.19 +ip4:67.225.140.19 ~all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.83.249, 172.67.183.159
IPv6 hints2606:4700:3035::6815:53f9, 2606:4700:3035::ac43:b79f
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=85, name=cloudflare-ech.com
SOAcory.ns.cloudflare.comdns@cloudflare.com serial=2401231949

Previously MX for

drmikekrantz.com

Same first word

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DNS History

7 records (4 active, 3 former)

20162017201820192020202120222023202420252026A104.21.83.249172.67.183.1592606:4700:3035::6815:53f92606:4700:3035::ac43:b79f64.98.36.19098.158.198.46CNAMEmail.imatrixbase.com
●A104.21.83.2492026-04-13 → 2026-04-13 · 2 obs
○ 2016-04-19 18:41:50
● 2026-04-13 17:46:10
●A172.67.183.1592026-04-13 → 2026-04-13 · 2 obs
○ 2016-04-19 18:41:50
● 2026-04-13 17:46:10
●A2606:4700:3035::6815:53f92026-04-13 → 2026-04-13 · 2 obs
○ 2016-04-19 18:41:50
● 2026-04-13 17:46:10
●A2606:4700:3035::ac43:b79f2026-04-13 → 2026-04-13 · 2 obs
○ 2016-04-19 18:41:50
● 2026-04-13 17:46:10
○A64.98.36.1902015-11-08 → 2016-04-19 · 4 obs
○ 2015-07-08 09:37:06
● 2015-11-08 14:01:20
● 2016-04-19 18:41:50
○ 2026-04-13 17:46:10
○A98.158.198.462015-07-08 → 2015-07-08 · 3 obs
● 2015-07-08 09:37:06
○ 2015-11-08 14:01:20
○ 2026-04-13 17:46:10
○CNAMEmail.imatrixbase.com2015-11-08 → 2016-04-19 · 3 obs
● 2015-11-08 14:01:20
● 2016-04-19 18:41:50
○ 2026-04-13 17:46:10

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comh.gtld-servers.net, k.gtld-servers.net, i.gtld-servers.net, g.gtld-servers.net...-
drmikekrantz.comcory.ns.cloudflare.com, sima.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.192.222

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for drmikekrantz.com (unsigned zone)

⏱️ Timing

Total: 332ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.183.159, 104.21.83.249
AAAA22606:4700:3035::ac43:b79f, 2606:4700:3035::6815:53f9
HTTPS1{"priority":1,"target":".","alpn":["h3",

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

mail.drmikekrantz.com maps to four IP numbers: 2606:4700:3035::6815:53f9, 2606:4700:3035::ac43:b79f, 104.21.83.249 and 172.67.183.159.

Other host names, for instance www.almercat.com, cpcalendars.meteorwatch.org, ns1.regalyazilim.com, www.cfec.am and vikacg.icu share IP numbers with mail.drmikekrantz.com.