ucheck.io - robtex.com

ucheck.io

DNSSEC⚠️ Not signed
A2606:4700:3031::6815:3524🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3032::ac43:d058🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.53.36Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.208.88🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSclarissa.ns.cloudflare.com ⭐
A2606:4700:50::a29f:267b🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRclarissa.ns.cloudflare.com
A2803:f800:50::6ca2:c27b🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRclarissa.ns.cloudflare.com
A2a06:98c1:50::ac40:227b🇺🇸 Cloudflare2a06:98c1:50::/45
PTRclarissa.ns.cloudflare.com
A108.162.194.123🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRclarissa.ns.cloudflare.com
A162.159.38.123Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRclarissa.ns.cloudflare.com
A172.64.34.123🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRclarissa.ns.cloudflare.com
NSjim.ns.cloudflare.com
A2606:4700:58::adf5:3b7d🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRjim.ns.cloudflare.com
A2803:f800:50::6ca2:c17d🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRjim.ns.cloudflare.com
A2a06:98c1:50::ac40:217d🇺🇸 Cloudflare2a06:98c1:50::/45
PTRjim.ns.cloudflare.com
A108.162.193.125🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRjim.ns.cloudflare.com
A172.64.33.125🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRjim.ns.cloudflare.com
A173.245.59.125🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRjim.ns.cloudflare.com
MXucheck-io.mail.protection.outlook.com ⭐
A2a01:111:f403:c801::🇺🇸 Microsoft2a01:111:f000::/36
PTRmail-sa9pr02cu00200.inbound.protection.outlook.com
A2a01:111:f403:c903::3🇺🇸 Microsoft2a01:111:f000::/36
PTRmail-mw2pr02cu00503.inbound.protection.outlook.com
A2a01:111:f403:f902::🇺🇸 Microsoft2a01:111:f000::/36
PTRmail-bl2pr04cu00100.inbound.protection.outlook.com
A2a01:111:f403:f910::🇺🇸 Microsoft2a01:111:f000::/36
PTRmail-cy5pr03cu00300.inbound.protection.outlook.com
A52.101.10.10🇺🇸 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-bn8pr05cu00102.inbound.protection.outlook.com
A52.101.40.2🇺🇸 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-cy1pr05cu00402.inbound.protection.outlook.com
A52.101.41.4🇺🇸 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-sj2pr05cu00204.inbound.protection.outlook.com
A52.101.50.4🇺🇸 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-co1pr03cu00404.inbound.protection.outlook.com
TXTMS=ms50546034
TXTv=spf1 include:secureserver.net -all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.53.36, 172.67.208.88
IPv6 hints2606:4700:3031::6815:3524, 2606:4700:3032::ac43:d058
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=93, name=cloudflare-ech.com
SOAclarissa.ns.cloudflare.comdns@cloudflare.com serial=2405947184

io

DNSSEC🔒 Signed (DS record present)
NSa0.nic.io ⭐
NSa2.nic.io
NSb0.nic.io
NSc0.nic.io
SOAa0.nic.iohostmaster@donuts.email serial=1780499195
⚠️ On DNS blocklist: tif

Same first word

ucheck.co.uk
ucheck.me
ucheck.xyz
ucheck.de
ucheck.mobi
ucheck.io
ucheck.org
ucheck.biz
ucheck.com
ucheck.it
ucheck.in
ucheck.yt
ucheck.net
ucheck.cn
ucheck.eu
ucheck.ru
ucheck.cc
ucheck.com.ar

Similar names

echuck.com
cheuck.com
chucke.net
cuheck.net
checku.nl
chucke.com
chueck.com
cuheck.com
checku.de
checku.eu
checku.com
checku.com.ua
checku.in

DNS History

11 records (7 active, 4 former)

NSclarissa.ns.cloudflare.comjim.ns.cloudflare.comMXucheck-io.mail.protection.outlook.comA104.21.53.36172.67.208.882606:4700:3031::6815:35242606:4700:3032::ac43:d058188.114.96.4188.114.97.42a06:98c1:3120::42a06:98c1:3121::4
●NSclarissa.ns.cloudflare.com2026-03-26 → 2026-06-03 · 2 obs
● 2026-03-26 05:11:04
● 2026-06-03 15:26:20
●NSjim.ns.cloudflare.com2026-03-26 → 2026-06-03 · 2 obs
● 2026-03-26 05:11:04
● 2026-06-03 15:26:20
●MXucheck-io.mail.protection.outlook.com2026-03-26 → 2026-06-03 · 2 obs
● 2026-03-26 05:11:04
● 2026-06-03 15:26:20
●A104.21.53.362026-03-26 → 2026-06-03 · 5 obs
● 2026-03-26 05:11:04
● 2026-05-26 22:23:04
○ 2026-05-28 18:27:40
● 2026-05-29 10:13:50
● 2026-06-03 15:26:20
●A172.67.208.882026-03-26 → 2026-06-03 · 5 obs
● 2026-03-26 05:11:04
● 2026-05-26 22:23:04
○ 2026-05-28 18:27:40
● 2026-05-29 10:13:50
● 2026-06-03 15:26:20
○A188.114.96.42026-05-28 → 2026-05-28 · 4 obs
○ 2026-05-26 22:23:04
● 2026-05-28 18:27:40
○ 2026-05-29 10:13:50
○ 2026-06-03 15:26:20
○A188.114.97.42026-05-28 → 2026-05-28 · 4 obs
○ 2026-05-26 22:23:04
● 2026-05-28 18:27:40
○ 2026-05-29 10:13:50
○ 2026-06-03 15:26:20
●A2606:4700:3031::6815:35242026-03-26 → 2026-06-03 · 5 obs
● 2026-03-26 05:11:04
● 2026-05-26 22:23:04
○ 2026-05-28 18:27:40
● 2026-05-29 10:13:50
● 2026-06-03 15:26:20
●A2606:4700:3032::ac43:d0582026-03-26 → 2026-06-03 · 5 obs
● 2026-03-26 05:11:04
● 2026-05-26 22:23:04
○ 2026-05-28 18:27:40
● 2026-05-29 10:13:50
● 2026-06-03 15:26:20
○A2a06:98c1:3120::42026-05-28 → 2026-05-28 · 4 obs
○ 2026-05-26 22:23:04
● 2026-05-28 18:27:40
○ 2026-05-29 10:13:50
○ 2026-06-03 15:26:20
○A2a06:98c1:3121::42026-05-28 → 2026-05-28 · 4 obs
○ 2026-05-26 22:23:04
● 2026-05-28 18:27:40
○ 2026-05-29 10:13:50
○ 2026-06-03 15:26:20

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
ioc0.nic.io, b0.nic.io, a0.nic.io, a2.nic.io-
ucheck.iojim.ns.cloudflare.com, clarissa.ns.cloudflare.com-

✅ Authoritative Response

Server:162.159.38.123

NS records: jim.ns.cloudflare.com, clarissa.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ucheck.io (unsigned zone)

⏱️ Timing

Total: 524ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.208.88, 104.21.53.36
AAAA22606:4700:3031::6815:3524, 2606:4700:3032::ac43:d058
NS2clarissa.ns.cloudflare.com, jim.ns.cloudflare.com
MX1ucheck-io.mail.protection.outlook.com (p
TXT2MS=ms50546034, v=spf1 include:secureserver.net -all
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1clarissa.ns.cloudflare.com dns.cloudflar

Analysis

IP Addresses

ucheck.io maps to 4 IP numbers, specifically 104.21.53.36, 172.67.208.88, 2606:4700:3031::6815:3524 and 2606:4700:3032::ac43:d058.

Two other host names, along with www.a125279.listingbook.com, cinemax.top and photozoo.com, also share IP numbers with ucheck.io.

Name Servers

ucheck.io is delegated to two name servers: clarissa.ns.cloudflare.com and jim.ns.cloudflare.com.

ucheck.io shares its NS records with other domains, for example kelola.biz, topeweb.com, stepmod.com and two others.

ucheck.io shares at least some of its name servers with other domains, including opensecurepdf.online, motozbyt-wloszczowa.pl, jsaqyzrglx.top and two others.

These name servers are often found in use together with craig.ns.cloudflare.com, lara.ns.cloudflare.com, jay.ns.cloudflare.com and three other name servers.

DNS names with 6 IP addresses:

clarissa.ns.cloudflare.com points to 108.162.194.123, 162.159.38.123, 172.64.34.123 and three other IP addresses.

jim.ns.cloudflare.com points to 108.162.193.125, 172.64.33.125, 173.245.59.125 and three other IP addresses.

Mail Servers

The sole mail server for ucheck.io is ucheck-io.mail.protection.outlook.com.

ucheck-io.mail.protection.outlook.com resolves to 8 IP numbers in total: 52.101.10.10, 52.101.40.2, 52.101.41.4 and five additional addresses.