f.osdev.org - dns.ninja

f.osdev.org

DNSSEC⚠️ Not signed
A2606:4700:3031::6815:458d🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3034::ac43:d11d🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.69.141Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.209.29🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.69.141, 172.67.209.29
IPv6 hints2606:4700:3031::6815:458d, 2606:4700:3034::ac43:d11d
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=13, name=cloudflare-ech.com

osdev.org

DNSSEC⚠️ Not signed
A2606:4700:3031::6815:458d🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3034::ac43:d11d🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.69.141Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.209.29🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSindie.ns.cloudflare.com ⭐
NSotto.ns.cloudflare.com
MXaspmx.l.google.com ⭐
MXalt1.aspmx.l.google.com(5)
MXalt2.aspmx.l.google.com(5)
MXaspmx2.googlemail.com(10)
MXaspmx3.googlemail.com(10)
TXTgoogle-site-verification=qqGZDC_jkC0VkBLdC5Nb9d4KFQISB-dzxlnIId2DI0E
TXTv=spf1 include:aspmx.googlemail.com include:rp.oracleemaildelivery.com includ...
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.69.141, 172.67.209.29
IPv6 hints2606:4700:3031::6815:458d, 2606:4700:3034::ac43:d11d
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=18, name=cloudflare-ech.com
SOAindie.ns.cloudflare.comdns@cloudflare.com serial=2410547763
WOT: SAFE (64/100)
rank #29974 globally
rank #3247 in the tld
WOT: SAFE (87/100)
📈 Tranco rank: #65,703

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DNS History

6 records (4 active, 2 former)

A104.21.69.141172.67.209.292606:4700:3031::6815:458d2606:4700:3034::ac43:d11d2606:4700:3034::6815:458d2606:4700:3036::ac43:d11d
●A104.21.69.1412026-03-26 → 2026-08-06 · 2 obs
● 2026-03-26 16:10:06
● 2026-08-06 07:10:42
●A172.67.209.292026-03-26 → 2026-08-06 · 2 obs
● 2026-03-26 16:10:06
● 2026-08-06 07:10:42
●A2606:4700:3031::6815:458d2026-07-16 → 2026-08-06 · 3 obs
○ 2026-06-14 14:31:40
● 2026-07-16 02:38:54
● 2026-08-06 07:10:42
○A2606:4700:3034::6815:458d2026-03-26 → 2026-06-14 · 4 obs
● 2026-03-26 16:10:06
● 2026-06-14 14:31:40
○ 2026-07-16 02:38:54
○ 2026-08-06 07:10:42
●A2606:4700:3034::ac43:d11d2026-07-16 → 2026-08-06 · 3 obs
○ 2026-06-14 14:31:40
● 2026-07-16 02:38:54
● 2026-08-06 07:10:42
○A2606:4700:3036::ac43:d11d2026-03-26 → 2026-06-14 · 4 obs
● 2026-03-26 16:10:06
● 2026-06-14 14:31:40
○ 2026-07-16 02:38:54
○ 2026-08-06 07:10:42

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
orgb2.org.afilias-nst.org, d0.org.afilias-nst.org, b0.org.afilias-nst.org-
osdev.orgotto.ns.cloudflare.com, indie.ns.cloudflare.com-

✅ Authoritative Response

Server:108.162.195.135

NS records: otto.ns.cloudflare.com, indie.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for osdev.org (unsigned zone)

⏱️ Timing

Total: 225ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.209.29, 104.21.69.141
AAAA22606:4700:3034::ac43:d11d, 2606:4700:3031::6815:458d
HTTPS1{"priority":1,"target":".","alpn":["h3",

Analysis

IP Addresses

f.osdev.org points to the four IP addresses 104.21.69.141, 172.67.209.29, 2606:4700:3031::6815:458d and 2606:4700:3034::ac43:d11d.

flashforwardsites.com, barracudaboat.no, namaninimex.com and two other host names share IP numbers with f.osdev.org.