sdfcn.org - robtex.com

sdfcn.org

DNSSEC🔒 Signed (DS record present)
A2606:4700:3034::6815:d49🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ⚠ Not in HTTPS hints
A2606:4700:3034::ac43:9b0f🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ⚠ Not in HTTPS hints
A172.64.80.1🇺🇸 Cloudflare172.64.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSalfred.ns.cloudflare.com ⭐
A2606:4700:58::a29f:2c83🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRalfred.ns.cloudflare.com
A2803:f800:50::6ca2:c383🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRalfred.ns.cloudflare.com
A2a06:98c1:50::ac40:2383🇺🇸 Cloudflare2a06:98c1:50::/45
PTRalfred.ns.cloudflare.com
A108.162.195.131🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRalfred.ns.cloudflare.com
A162.159.44.131Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRalfred.ns.cloudflare.com
A172.64.35.131🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRalfred.ns.cloudflare.com
NSnadia.ns.cloudflare.com
A2606:4700:50::adf5:3acf🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRnadia.ns.cloudflare.com
A2803:f800:50::6ca2:c0cf🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRnadia.ns.cloudflare.com
A2a06:98c1:50::ac40:20cf🇺🇸 Cloudflare2a06:98c1:50::/45
PTRnadia.ns.cloudflare.com
A108.162.192.207🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRnadia.ns.cloudflare.com
A172.64.32.207🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRnadia.ns.cloudflare.com
A173.245.58.207🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRnadia.ns.cloudflare.com
MXus1.workspace.org ⭐
A162.244.93.81🇺🇸 AS965162.244.93.0/24 Namecrane
PTRus1.workspace.org
TXTD3526678
TXTv=spf1 include:_spf.workspace.org -all
HTTPSHTTP/3, HTTP/2 ⚠ 2 unhinted📌 1 extra
IPv4172.64.80.1
IPv62606:4700:130:436c:6f75:6466:6c61:7265
SOAalfred.ns.cloudflare.comdns@cloudflare.com serial=2397702947

org

DNSSEC🔒 Signed (DS record present)
NSa0.org.afilias-nst.info ⭐ ⚠️ Not in parent delegation
NSa2.org.afilias-nst.info ⚠️ Not in parent delegation
NSb0.org.afilias-nst.org
NSb2.org.afilias-nst.org
NSc0.org.afilias-nst.info ⚠️ Not in parent delegation
NSd0.org.afilias-nst.org
SOAa0.org.afilias-nst.infohostmaster@donuts.email serial=1771291736
🔒 HSTS Preload (+subdomains)

Same first word

sdfcn.blogspot.sn
sdfcn.org

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DNS History

9 records (6 active, 3 former)

NSalfred.ns.cloudflare.comnadia.ns.cloudflare.comMXus1.workspace.orgA172.64.80.12606:4700:3034::6815:d492606:4700:3034::ac43:9b0f104.21.13.73172.67.155.152606:4700:130:436c:6f75:6466:6c61:7265
●NSalfred.ns.cloudflare.com2026-03-02 → 2026-03-06 · 2 obs
● 2026-03-02 13:40:12
● 2026-03-06 16:32:18
●NSnadia.ns.cloudflare.com2026-03-02 → 2026-03-06 · 2 obs
● 2026-03-02 13:40:12
● 2026-03-06 16:32:18
●MXus1.workspace.org2026-03-02 → 2026-03-06 · 2 obs
● 2026-03-02 13:40:12
● 2026-03-06 16:32:18
○A104.21.13.732026-03-02 → 2026-03-04 · 3 obs
● 2026-03-02 13:40:12
● 2026-03-04 07:39:42
○ 2026-03-06 16:32:18
●A172.64.80.12026-03-06 → 2026-03-06 · 2 obs
○ 2026-03-04 07:39:42
● 2026-03-06 16:32:18
○A172.67.155.152026-03-02 → 2026-03-04 · 3 obs
● 2026-03-02 13:40:12
● 2026-03-04 07:39:42
○ 2026-03-06 16:32:18
○A2606:4700:130:436c:6f75:6466:6c61:72652026-03-02 → 2026-03-02 · 3 obs
● 2026-03-02 13:40:12
○ 2026-03-04 07:39:42
○ 2026-03-06 16:32:18
●A2606:4700:3034::6815:d492026-03-04 → 2026-03-06 · 3 obs
○ 2026-03-02 13:40:12
● 2026-03-04 07:39:42
● 2026-03-06 16:32:18
●A2606:4700:3034::ac43:9b0f2026-03-04 → 2026-03-06 · 3 obs
○ 2026-03-02 13:40:12
● 2026-03-04 07:39:42
● 2026-03-06 16:32:18

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
orgb2.org.afilias-nst.org, d0.org.afilias-nst.org, b0.org.afilias-nst.org-
sdfcn.orgnadia.ns.cloudflare.com, alfred.ns.cloudflare.com-

✅ Authoritative Response

Server: 172.64.35.131

NS records: nadia.ns.cloudflare.com, alfred.ns.cloudflare.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 449ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.155.15, 104.21.13.73
AAAA22606:4700:3034::6815:d49, 2606:4700:3034::ac43:9b0f
NS2alfred.ns.cloudflare.com, nadia.ns.cloudflare.com
MX1us1.workspace.org (pri: 10)
TXT2D3526678, v=spf1 include:_spf.workspace.org -all
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1alfred.ns.cloudflare.com dns.cloudflare.

Analysis

IP Addresses

sdfcn.org points to three IPs: 2606:4700:3034::6815:d49, 2606:4700:3034::ac43:9b0f and 172.64.80.1.

Other host names, for instance kdesd.com.cn, cremaviso.net, (0x736578)tou.blog.br, jiuday.com and redhatisnotlinux.org share IP numbers with sdfcn.org.

Name Servers

sdfcn.org is delegated to two name servers: alfred.ns.cloudflare.com and nadia.ns.cloudflare.com.

sdfcn.org uses the same name server setup as other domains, for instance electrum.is, alksnis.co.uk, oceanias.net, uct.cc and jantar.hr.

sdfcn.org shares name servers with other domains at least partially, for instance dplds.com, hyrbil.se, talentry.tech, drtecno.com and chvv.com.

these name servers are commonly used together with dakota.ns.cloudflare.com and katelyn.ns.cloudflare.com.

Host names with six IP numbers: alfred.ns.cloudflare.com points to 2606:4700:58::a29f:2c83, 2803:f800:50::6ca2:c383, 2a06:98c1:50::ac40:2383, 108.162.195.131, 162.159.44.131 and 172.64.35.131; nadia.ns.cloudflare.com points to 2606:4700:50::adf5:3acf, 2803:f800:50::6ca2:c0cf, 2a06:98c1:50::ac40:20cf, 108.162.192.207, 172.64.32.207 and 173.245.58.207.

Mail Servers

The mail server for sdfcn.org is us1.workspace.org.

sdfcn.org shares the same mail server setup as other domains, including hotelaltamirasuites.com, hostkoala.com, veri.my.id, u2hosting.net and a-34.com.

sdfcn.org shares some mail servers with other domains, including longtengyun.sbs, atriumhosting.com, yes.vg, dutaspace.com and fabiosantos.com.br.

these mail servers are commonly used with mx1.mxfilter.net, mx2.mxfilter.net, mx3.mxfilter.net and mx4.mxfilter.net.

Host name us1.workspace.org resolves to IP 162.244.93.81.