ns3.itfirst.ch - robtex.com

ns3.itfirst.ch

DNSSEC⚠️ Not signed
A2606:4700:3030::6815:2e6b🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::ac43:a872🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.46.107Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.168.114🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.46.107, 172.67.168.114
IPv6 hints2606:4700:3030::6815:2e6b, 2606:4700:3035::ac43:a872
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=83, name=cloudflare-ech.com

itfirst.ch

DNSSEC⚠️ Not signed
A2606:4700:3030::6815:2e6b🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::ac43:a872🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.46.107Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.168.114🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSada.ns.cloudflare.com ⭐
NSgabe.ns.cloudflare.com
MXmail.itfirst.ch ⭐
TXTv=spf1 include:_spf.sui-inter.net +mx +a ~all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.46.107, 172.67.168.114
IPv6 hints2606:4700:3030::6815:2e6b, 2606:4700:3035::ac43:a872
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=83, name=cloudflare-ech.com
SOAada.ns.cloudflare.comdns@cloudflare.com serial=2401161676

Previously NS for

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DNS History

5 records (4 active, 1 former)

20162017201820192020202120222023202420252026A104.21.46.107172.67.168.1142606:4700:3030::6815:2e6b2606:4700:3035::ac43:a872213.133.102.109
●A104.21.46.1072026-02-16 → 2026-04-13 · 3 obs
○ 2017-09-08 01:57:06
● 2026-02-16 09:37:32
● 2026-04-13 20:59:32
●A172.67.168.1142026-02-16 → 2026-04-13 · 3 obs
○ 2017-09-08 01:57:06
● 2026-02-16 09:37:32
● 2026-04-13 20:59:32
○A213.133.102.1092015-07-18 → 2017-09-08 · 4 obs
● 2015-07-18 21:31:10
● 2017-09-08 01:57:06
○ 2026-02-16 09:37:32
○ 2026-04-13 20:59:32
●A2606:4700:3030::6815:2e6b2026-02-16 → 2026-04-13 · 3 obs
○ 2017-09-08 01:57:06
● 2026-02-16 09:37:32
● 2026-04-13 20:59:32
●A2606:4700:3035::ac43:a8722026-02-16 → 2026-04-13 · 3 obs
○ 2017-09-08 01:57:06
● 2026-02-16 09:37:32
● 2026-04-13 20:59:32

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
cha.nic.ch, b.nic.ch, d.nic.ch, e.nic.ch...-
itfirst.chada.ns.cloudflare.com, gabe.ns.cloudflare.com-

✅ Authoritative Response

Server:173.245.58.54

NS records: ada.ns.cloudflare.com, gabe.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for itfirst.ch (unsigned zone)

⏱️ Timing

Total: 481ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.46.107, 172.67.168.114
AAAA22606:4700:3035::ac43:a872, 2606:4700:3030::6815:2e6b
HTTPS1{"priority":1,"target":".","alpn":["h3",

Analysis

IP Addresses

ns3.itfirst.ch resolves to four IPs: 2606:4700:3030::6815:2e6b, 2606:4700:3035::ac43:a872, 104.21.46.107 and 172.67.168.114.

Other host names, for instance www.ambersoncollege.ca, henqiangda.cn, registration-quantumai.com, mail.rwkattorneys.com and email.grassoestateservices.com share IP numbers with ns3.itfirst.ch.