cdn.21n.org - robtex.com

Check domain reputation for cdn.21n.org →

cdn.21n.org

DNSSEC⚠️ Not signed
A2606:4700:3030::6815:35d8🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3031::ac43:db27🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.53.216Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.219.39🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.53.216, 172.67.219.39
IPv6 hints2606:4700:3030::6815:35d8, 2606:4700:3031::ac43:db27
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=120, name=cloudflare-ech.com

21n.org

DNSSEC⚠️ Not signed
A2606:4700:3030::6815:35d8🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3031::ac43:db27🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.53.216Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.219.39🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSjoyce.ns.cloudflare.com ⭐
NSkhalid.ns.cloudflare.com
MX21n-org.mail.protection.outlook.com ⭐
TXTMS=ms52588461
TXTgoogle-site-verification=cKKcEYOvfOe2AYk6mmEmGppcl7nyonOsn5AwSEZOKz4
TXTv=spf1 include:spf.protection.outlook.com -all
TXTzoho-verification=zb89956817.zmverify.zoho.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.53.216, 172.67.219.39
IPv6 hints2606:4700:3030::6815:35d8, 2606:4700:3031::ac43:db27
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=120, name=cloudflare-ech.com
SOAjoyce.ns.cloudflare.comdns@cloudflare.com serial=2411939889

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DNS History

10 records (4 active, 6 former)

2017201820192020202120222023202420252026A104.21.53.216172.67.219.392606:4700:3030::6815:35d82606:4700:3031::ac43:db27172.66.41.48172.66.42.2082606:4700:3033::ac43:db272606:4700:3108::ac42:29302606:4700:3108::ac42:2ad069.85.84.20
●A104.21.53.2162026-04-18 → 2026-08-15 · 7 obs
○ 2016-12-22 10:05:30
● 2026-04-18 10:45:54
● 2026-04-23 17:02:58
○ 2026-05-02 11:02:16
○ 2026-05-18 02:59:00
● 2026-05-18 04:23:12
● 2026-08-15 05:45:00
○A172.66.41.482026-05-02 → 2026-05-18 · 5 obs
○ 2026-04-23 17:02:58
● 2026-05-02 11:02:16
● 2026-05-18 02:59:00
○ 2026-05-18 04:23:12
○ 2026-08-15 05:45:00
○A172.66.42.2082026-05-02 → 2026-05-18 · 5 obs
○ 2026-04-23 17:02:58
● 2026-05-02 11:02:16
● 2026-05-18 02:59:00
○ 2026-05-18 04:23:12
○ 2026-08-15 05:45:00
●A172.67.219.392026-04-18 → 2026-08-15 · 7 obs
○ 2016-12-22 10:05:30
● 2026-04-18 10:45:54
● 2026-04-23 17:02:58
○ 2026-05-02 11:02:16
○ 2026-05-18 02:59:00
● 2026-05-18 04:23:12
● 2026-08-15 05:45:00
●A2606:4700:3030::6815:35d82026-04-18 → 2026-08-15 · 7 obs
○ 2016-12-22 10:05:30
● 2026-04-18 10:45:54
● 2026-04-23 17:02:58
○ 2026-05-02 11:02:16
○ 2026-05-18 02:59:00
● 2026-05-18 04:23:12
● 2026-08-15 05:45:00
●A2606:4700:3031::ac43:db272026-08-02 → 2026-08-15 · 3 obs
○ 2026-06-17 08:20:24
● 2026-08-02 04:33:32
● 2026-08-15 05:45:00
○A2606:4700:3033::ac43:db272026-04-18 → 2026-06-17 · 9 obs
○ 2016-12-22 10:05:30
● 2026-04-18 10:45:54
● 2026-04-23 17:02:58
○ 2026-05-02 11:02:16
○ 2026-05-18 02:59:00
● 2026-05-18 04:23:12
● 2026-06-17 08:20:24
○ 2026-08-02 04:33:32
○ 2026-08-15 05:45:00
○A2606:4700:3108::ac42:29302026-05-02 → 2026-05-18 · 5 obs
○ 2026-04-23 17:02:58
● 2026-05-02 11:02:16
● 2026-05-18 02:59:00
○ 2026-05-18 04:23:12
○ 2026-08-15 05:45:00
○A2606:4700:3108::ac42:2ad02026-05-02 → 2026-05-18 · 5 obs
○ 2026-04-23 17:02:58
● 2026-05-02 11:02:16
● 2026-05-18 02:59:00
○ 2026-05-18 04:23:12
○ 2026-08-15 05:45:00
○A69.85.84.202016-12-22 → 2016-12-22 · 3 obs
● 2016-12-22 10:05:30
○ 2026-04-18 10:45:54
○ 2026-08-15 05:45:00

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
orgb2.org.afilias-nst.org, b0.org.afilias-nst.org, d0.org.afilias-nst.org-
21n.orgkhalid.ns.cloudflare.com, joyce.ns.cloudflare.com-

✅ Authoritative Response

Server:172.64.35.53

NS records: khalid.ns.cloudflare.com, joyce.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 21n.org (unsigned zone)

⏱️ Timing

Total: 433ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.53.216, 172.67.219.39
AAAA22606:4700:3030::6815:35d8, 2606:4700:3031::ac43:db27
HTTPS1{"priority":1,"target":".","alpn":["h3",

Analysis

IP Addresses

cdn.21n.org resolves to four IP addresses: 104.21.53.216, 172.67.219.39, 2606:4700:3030::6815:35d8 and 2606:4700:3031::ac43:db27.

icdlse.unim.ac.id, www.onvision.com.br.cdn.cloudflare.net, rentalsos.com and two other host names share IP numbers with cdn.21n.org.