www.semsec.net - robtex.com

www.semsec.net

DNSSEC⚠️ Not signed
A2606:4700:3034::ac43:85b1🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3036::6815:5b3🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.5.179Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.133.177🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.5.179, 172.67.133.177
IPv6 hints2606:4700:3034::ac43:85b1, 2606:4700:3036::6815:5b3
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=125, name=cloudflare-ech.com

semsec.net

DNSSEC⚠️ Not signed
A2606:4700:3034::ac43:85b1🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3036::6815:5b3🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.5.179Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.133.177🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSjoan.ns.cloudflare.com ⭐
NSroan.ns.cloudflare.com
MXmx00.1and1.com ⭐
MXmx01.1and1.com(1)
TXTgoogle-site-verification=UjQfi4B3-P_xg19ep6yqlb2Tq67jTi2jrT5oMyBggdU
TXTv=spf1 include:_spf.perfora.net include:_spf.kundenserver.de -all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.5.179, 172.67.133.177
IPv6 hints2606:4700:3034::ac43:85b1, 2606:4700:3036::6815:5b3
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=125, name=cloudflare-ech.com
SOAjoan.ns.cloudflare.comdns@cloudflare.com serial=2400870660
🔒 HSTS Preload (+subdomains)

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DNS History

8 records (4 active, 4 former)

202120222023202420252026A104.21.5.179172.67.133.1772606:4700:3034::ac43:85b12606:4700:3036::6815:5b3104.28.12.91104.28.13.912606:4700:3030::681c:d5b2606:4700:3035::681c:c5b
●A104.21.5.1792026-02-18 → 2026-04-14 · 3 obs
○ 2020-03-17 23:51:26
● 2026-02-18 05:27:20
● 2026-04-14 04:55:42
○A104.28.12.912020-03-17 → 2020-03-17 · 3 obs
● 2020-03-17 23:51:26
○ 2026-02-18 05:27:20
○ 2026-04-14 04:55:42
○A104.28.13.912020-03-17 → 2020-03-17 · 3 obs
● 2020-03-17 23:51:26
○ 2026-02-18 05:27:20
○ 2026-04-14 04:55:42
●A172.67.133.1772026-02-18 → 2026-04-14 · 3 obs
○ 2020-03-17 23:51:26
● 2026-02-18 05:27:20
● 2026-04-14 04:55:42
○A2606:4700:3030::681c:d5b2020-03-17 → 2020-03-17 · 3 obs
● 2020-03-17 23:51:26
○ 2026-02-18 05:27:20
○ 2026-04-14 04:55:42
●A2606:4700:3034::ac43:85b12026-02-18 → 2026-04-14 · 3 obs
○ 2020-03-17 23:51:26
● 2026-02-18 05:27:20
● 2026-04-14 04:55:42
○A2606:4700:3035::681c:c5b2020-03-17 → 2020-03-17 · 3 obs
● 2020-03-17 23:51:26
○ 2026-02-18 05:27:20
○ 2026-04-14 04:55:42
●A2606:4700:3036::6815:5b32026-02-18 → 2026-04-14 · 3 obs
○ 2020-03-17 23:51:26
● 2026-02-18 05:27:20
● 2026-04-14 04:55:42

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
netm.gtld-servers.net, k.gtld-servers.net, b.gtld-servers.net, f.gtld-servers.net...-
semsec.netroan.ns.cloudflare.com, joan.ns.cloudflare.com-

✅ Authoritative Response

Server:173.245.59.226

NS records: roan.ns.cloudflare.com, joan.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for semsec.net (unsigned zone)

⏱️ Timing

Total: 436ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.5.179, 172.67.133.177
AAAA22606:4700:3036::6815:5b3, 2606:4700:3034::ac43:85b1
HTTPS1{"priority":1,"target":".","alpn":["h3",

Analysis

IP Addresses

www.semsec.net points to four IP numbers: 2606:4700:3034::ac43:85b1, 2606:4700:3036::6815:5b3, 104.21.5.179 and 172.67.133.177.

For instance, other host names inoue-shika.jp, 2-p.co.il, cardaccept.net, humoretc.com.cdn.cloudflare.net and shntt.com share IP numbers with www.semsec.net.