2019.cipherchallenge.org - robtex.com

2019.cipherchallenge.org

DNSSEC⚠️ Not signed
A104.21.32.123Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.151.214🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.32.123, 172.67.151.214
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=85, name=cloudflare-ech.com

cipherchallenge.org

DNSSEC⚠️ Not signed
A104.21.32.123Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.151.214🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSjean.ns.cloudflare.com ⭐
NSphil.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)
TXTblitz=mu-d777fcac-dcdc9fc3-cb58b231-5c80083d
TXTgoogle-site-verification=iH94XUVcwJlDb8chO0n0xO54MyoyBO0p6dGifWSKfxY
TXTv=spf1 include:sparkpostmail.com ~all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.32.123, 172.67.151.214
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=85, name=cloudflare-ech.com
SOAjean.ns.cloudflare.comdns@cloudflare.com serial=2400817563

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DNS History

2 records (2 active, 0 former)

A104.21.32.123172.67.151.214
●A104.21.32.1232026-04-11 → 2026-04-13 · 2 obs
● 2026-04-11 17:32:02
● 2026-04-13 17:34:00
●A172.67.151.2142026-04-11 → 2026-04-13 · 2 obs
● 2026-04-11 17:32:02
● 2026-04-13 17:34:00

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
orgb0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org-
cipherchallenge.orgphil.ns.cloudflare.com, jean.ns.cloudflare.com-

✅ Authoritative Response

Server:173.245.58.121

NS records: phil.ns.cloudflare.com, jean.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cipherchallenge.org (unsigned zone)

⏱️ Timing

Total: 248ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.32.123, 172.67.151.214
HTTPS1{"priority":1,"target":".","alpn":["h3",

Analysis

IP Addresses

2019.cipherchallenge.org resolves to two IPs: 104.21.32.123 and 172.67.151.214.

other host names for instance tristatehomes4sale.com, www.zkhyy.com, mail.arizonaplumbingexperts.com, honmaksan.com.tr and tabelaesportiva.com share IP numbers with 2019.cipherchallenge.org.