f.osdev.org - robtex.com

f.osdev.org

DNSSEC⚠️ Not signed
A2606:4700:3034::6815:458d🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3036::ac43:d11d🇺🇸 Cloudflare2606:4700:3036::/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 hints2606:4700:3034::6815:458d, 2606:4700:3036::ac43:d11d
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=8, name=cloudflare-ech.com

osdev.org

DNSSEC⚠️ Not signed
A2606:4700:3034::6815:458d🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3036::ac43:d11d🇺🇸 Cloudflare2606:4700:3036::/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 hints2606:4700:3034::6815:458d, 2606:4700:3036::ac43:d11d
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=8, name=cloudflare-ech.com
SOAindie.ns.cloudflare.comdns@cloudflare.com serial=2398817355
WOT: SAFE (64/100)
rank #29876 globally
rank #3416 in the tld
WOT: SAFE (87/100)
📈 Tranco rank: #66,115

Same first word

f.elementor.cloud
f.ltd
f.wtf
f.gs.cn
f.freetls.fastly.net
f.cn
f.bank
f.fm
f.tv
f.fr
f.hr
f.akamaiedge-staging.net
f.bio
f.de
f.af
f.hu
f.tt
f.srl
f.tm
f.technology
f.is
f.com.pl
f.dating
f.ms
f.tl
f.nz
f.x0.to
f.cl
f.sh.cn
f.nu
f.net.cn
f.to
f.edgesuite.net
f.co.uk
f.akamaiedge.net
f.fyi
f.cz
f.fi
f.cool
f.gd
f.cx
f.bi
f.kg
f.ai
f.run
f.net.pl
f.cc
f.gg
f.ag
f.lu
f.kiev.ua
f.team
f.sh
f.at
f.nx.cn
f.edu.pl
f.pl
f.akamai.net
f.gl
f.vg
f.hk.cn
f.mr
f.kz
f.xj.cn
f.box
f.dk
f.cg
f.zj.cn
f.co.za
f.recipes
f.inc
f.am
f.ht
f.tj.cn
f.ac
f.com.ua
f.pn
f.ph
f.co.nz
f.company
f.org
f.gov.au
f.co
f.im
f.ls
f.io
f.dog
f.gold
f.energy
f.plus
f.vision
f.biz
f.cheap
f.fj.cn
f.st
f.sc.cn
f.mw
f.ua
f.cm
f.sn.cn

DNS History

4 records (4 active, 0 former)

A104.21.69.141172.67.209.292606:4700:3034::6815:458d2606:4700:3036::ac43:d11d
●A104.21.69.1412026-03-26 → 2026-04-14 · 2 obs
● 2026-03-26 16:10:06
● 2026-04-14 22:10:38
●A172.67.209.292026-03-26 → 2026-04-14 · 2 obs
● 2026-03-26 16:10:06
● 2026-04-14 22:10:38
●A2606:4700:3034::6815:458d2026-03-26 → 2026-04-14 · 2 obs
● 2026-03-26 16:10:06
● 2026-04-14 22:10:38
●A2606:4700:3036::ac43:d11d2026-03-26 → 2026-04-14 · 2 obs
● 2026-03-26 16:10:06
● 2026-04-14 22:10:38

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
orgb2.org.afilias-nst.org, d0.org.afilias-nst.org, b0.org.afilias-nst.org-
osdev.orgindie.ns.cloudflare.com, otto.ns.cloudflare.com-

✅ Authoritative Response

Server:172.64.34.163

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for osdev.org (unsigned zone)

⏱️ Timing

Total: 676ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.69.141, 172.67.209.29
AAAA22606:4700:3034::6815:458d, 2606:4700:3036::ac43:d11d
HTTPS1{"priority":1,"target":".","alpn":["h3",

Analysis

IP Addresses

f.osdev.org resolves to four IP numbers: 2606:4700:3034::6815:458d, 2606:4700:3036::ac43:d11d, 104.21.69.141 and 172.67.209.29.

Other host names such as flashforwardsites.com, happyradio.cn, adizowi.top, bricky.ca and blog.americanheritage1.com share IPs with f.osdev.org.