mail.ctoobio.com - robtex.com

mail.ctoobio.com

DNSSEC⚠️ Not signed
A104.21.58.100Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.158.253🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.58.100, 172.67.158.253
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=109, name=cloudflare-ech.com

ctoobio.com

DNSSEC⚠️ Not signed
A104.21.58.100Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.158.253🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSlouis.ns.cloudflare.com ⭐
NSnaomi.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.58.100, 172.67.158.253
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=109, name=cloudflare-ech.com
SOAlouis.ns.cloudflare.comdns@cloudflare.com serial=2401369746
WOT: SAFE (60/100)

Previously MX for

ctoobio.com

Same first word

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DNS History

6 records (2 active, 4 former)

20162017201820192020202120222023202420252026A104.21.58.100172.67.158.253188.114.96.0188.114.97.094.247.177.8294.247.178.151
●A104.21.58.1002026-03-17 → 2026-05-11 · 5 obs
○ 2016-04-21 14:21:28
● 2026-03-17 14:50:04
○ 2026-03-18 03:55:04
● 2026-05-11 12:30:44
● 2026-05-11 12:30:46
●A172.67.158.2532026-03-17 → 2026-05-11 · 5 obs
○ 2016-04-21 14:21:28
● 2026-03-17 14:50:04
○ 2026-03-18 03:55:04
● 2026-05-11 12:30:44
● 2026-05-11 12:30:46
○A188.114.96.02026-03-18 → 2026-03-18 · 4 obs
○ 2026-03-17 14:50:04
● 2026-03-18 03:55:04
○ 2026-05-11 12:30:44
○ 2026-05-11 12:30:46
○A188.114.97.02026-03-18 → 2026-03-18 · 4 obs
○ 2026-03-17 14:50:04
● 2026-03-18 03:55:04
○ 2026-05-11 12:30:44
○ 2026-05-11 12:30:46
○A94.247.177.822016-04-21 → 2016-04-21 · 4 obs
○ 2016-02-04 07:46:46
● 2016-04-21 14:21:28
○ 2026-03-17 14:50:04
○ 2026-05-11 12:30:46
○A94.247.178.1512015-07-01 → 2016-02-04 · 4 obs
● 2015-07-01 12:32:36
● 2016-02-04 07:46:46
○ 2016-04-21 14:21:28
○ 2026-05-11 12:30:46

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
ctoobio.comnaomi.ns.cloudflare.com, louis.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.192.208

NS records: naomi.ns.cloudflare.com, louis.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ctoobio.com (unsigned zone)

⏱️ Timing

Total: 153ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.58.100, 172.67.158.253
HTTPS1{"priority":1,"target":".","alpn":["h3",

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

mail.ctoobio.com resolves to two IP numbers: 104.21.58.100 and 172.67.158.253.

Other host names, for instance ns1.waytofamous.com, opteraunitedservicesco.click, vku.co.uk, companiamaria-cmns-valladolid.micolegio.es and witex.ua share IP numbers with mail.ctoobio.com.