mail.crestoption.com - robtex.com

mail.crestoption.com

DNSSEC⚠️ Not signed
A2606:4700:3030::ac43:b9c7🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::6815:589c🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.88.156Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.185.199🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4104.21.88.156, 172.67.185.199
IPv62606:4700:3030::ac43:b9c7, 2606:4700:3037::6815:589c

crestoption.com

DNSSEC⚠️ Not signed
A2606:4700:3030::ac43:b9c7🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::6815:589c🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.88.156Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.185.199🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSopal.ns.cloudflare.com ⭐
NSsam.ns.cloudflare.com
MX_dc-mx.3e018819bd6b.crestoption.com ⭐
TXTv=spf1 +a +mx +ip4:111.90.156.60 +ip4:111.90.156.70 include:spf.mailsentinel....
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4104.21.88.156, 172.67.185.199
IPv62606:4700:3030::ac43:b9c7, 2606:4700:3037::6815:589c
SOAopal.ns.cloudflare.comdns@cloudflare.com serial=2396838994

Previously MX for

crestoption.com

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DNS History

5 records (4 active, 1 former)

20192020202120222023202420252026A104.21.88.156172.67.185.1992606:4700:3030::ac43:b9c72606:4700:3037::6815:589c68.65.123.230
●A104.21.88.1562026-04-01 → 2026-04-01 · 2 obs
○ 2018-05-21 18:57:18
● 2026-04-01 02:26:10
●A172.67.185.1992026-04-01 → 2026-04-01 · 2 obs
○ 2018-05-21 18:57:18
● 2026-04-01 02:26:10
●A2606:4700:3030::ac43:b9c72026-04-01 → 2026-04-01 · 2 obs
○ 2018-05-21 18:57:18
● 2026-04-01 02:26:10
●A2606:4700:3037::6815:589c2026-04-01 → 2026-04-01 · 2 obs
○ 2018-05-21 18:57:18
● 2026-04-01 02:26:10
○A68.65.123.2302018-05-21 → 2018-05-21 · 2 obs
● 2018-05-21 18:57:18
○ 2026-04-01 02:26:10

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comb.gtld-servers.net, k.gtld-servers.net, h.gtld-servers.net, a.gtld-servers.net...-
crestoption.comsam.ns.cloudflare.com, opal.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.194.100

NS records: sam.ns.cloudflare.com, opal.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for crestoption.com (unsigned zone)

⏱️ Timing

Total: 336ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.88.156, 172.67.185.199
AAAA22606:4700:3030::ac43:b9c7, 2606:4700:3037::6815:589c
HTTPS1{"priority":1,"target":".","alpn":["h3",

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

mail.crestoption.com resolves to four IPs: 2606:4700:3030::ac43:b9c7, 2606:4700:3037::6815:589c, 104.21.88.156 and 172.67.185.199.

Other host names such as xky555.com, benthami.com, 108f-hot-yoga.de, www.nordicstoveandfireplace.com and mail.zanzibaronlineshop.com share IP numbers with mail.crestoption.com.