server.fcv.edu.br - robtex.com

server.fcv.edu.br

DNSSEC⚠️ Not signed
A2606:4700:3033::ac43:d772🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::6815:4340🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.67.64Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.215.114🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.67.64, 172.67.215.114
IPv6 hints2606:4700:3033::ac43:d772, 2606:4700:3037::6815:4340
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=63, name=cloudflare-ech.com

fcv.edu.br

DNSSEC⚠️ Not signed
A2606:4700:3033::ac43:d772🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::6815:4340🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.67.64Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.215.114🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSsam.ns.cloudflare.com ⭐
NSsarah.ns.cloudflare.com
MXaspmx.l.google.com ⭐
MXalt1.aspmx.l.google.com(5)
MXalt2.aspmx.l.google.com(5)
MXalt3.aspmx.l.google.com(10)
MXalt4.aspmx.l.google.com(10)
TXTv=spf1 mx include:fcvspf.fcv.edu.br +mx +a +ip4:149.56.8.88 +ip4:149.28.106.2...
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.67.64, 172.67.215.114
IPv6 hints2606:4700:3033::ac43:d772, 2606:4700:3037::6815:4340
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=63, name=cloudflare-ech.com
SOAsam.ns.cloudflare.comdns@cloudflare.com serial=2400565035

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DNS History

6 records (4 active, 2 former)

2020202120222023202420252026A104.21.67.64172.67.215.1142606:4700:3033::ac43:d7722606:4700:3037::6815:4340149.56.8.882606:4700:130:436c:6f75:6466:6c61:7265
●A104.21.67.642026-02-15 → 2026-04-13 · 3 obs
○ 2019-01-19 09:53:20
● 2026-02-15 13:31:08
● 2026-04-13 16:53:44
○A149.56.8.882019-01-19 → 2019-01-19 · 3 obs
● 2019-01-19 09:53:20
○ 2026-02-15 13:31:08
○ 2026-04-13 16:53:44
●A172.67.215.1142026-02-15 → 2026-04-13 · 3 obs
○ 2019-01-19 09:53:20
● 2026-02-15 13:31:08
● 2026-04-13 16:53:44
○A2606:4700:130:436c:6f75:6466:6c61:72652026-02-23 → 2026-02-23 · 4 obs
○ 2026-02-15 13:31:08
● 2026-02-23 02:43:58
○ 2026-03-28 07:57:18
○ 2026-04-13 16:53:44
●A2606:4700:3033::ac43:d7722026-02-15 → 2026-04-13 · 5 obs
○ 2019-01-19 09:53:20
● 2026-02-15 13:31:08
○ 2026-02-23 02:43:58
● 2026-03-28 07:57:18
● 2026-04-13 16:53:44
●A2606:4700:3037::6815:43402026-02-15 → 2026-04-13 · 5 obs
○ 2019-01-19 09:53:20
● 2026-02-15 13:31:08
○ 2026-02-23 02:43:58
● 2026-03-28 07:57:18
● 2026-04-13 16:53:44

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
brb.dns.br, e.dns.br, f.dns.br, a.dns.br...-
fcv.edu.brsam.ns.cloudflare.com, sarah.ns.cloudflare.com-

✅ Authoritative Response

Server:172.64.34.218

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for fcv.edu.br (unsigned zone)

⏱️ Timing

Total: 481ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.67.64, 172.67.215.114
AAAA22606:4700:3033::ac43:d772, 2606:4700:3037::6815:4340
HTTPS1{"priority":1,"target":".","alpn":["h3",

Analysis

IP Addresses

Four IP numbers are pointed to by server.fcv.edu.br: 2606:4700:3033::ac43:d772, 2606:4700:3037::6815:4340, 104.21.67.64 and 172.67.215.114.

other host names including www.hnbshb.com, tekfar.com.tw, scwende.com, usoath.com and rose.academy share IP numbers with server.fcv.edu.br.