rsi4u.org - robtex.com

rsi4u.org

DNSSEC⚠️ Not signed
A2606:4700:3030::6815:c36🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::ac43:c1af🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.12.54Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.193.175🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSdahlia.ns.cloudflare.com ⭐
A2606:4700:50::adf5:3a59🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdahlia.ns.cloudflare.com
A2803:f800:50::6ca2:c059🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRdahlia.ns.cloudflare.com
A2a06:98c1:50::ac40:2059🇺🇸 Cloudflare2a06:98c1:50::/45
PTRdahlia.ns.cloudflare.com
A108.162.192.89🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdahlia.ns.cloudflare.com
A172.64.32.89🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdahlia.ns.cloudflare.com
A173.245.58.89🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdahlia.ns.cloudflare.com
NSsullivan.ns.cloudflare.com
A2606:4700:58::a29f:2ca1🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRsullivan.ns.cloudflare.com
A2803:f800:50::6ca2:c3a1🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRsullivan.ns.cloudflare.com
A2a06:98c1:50::ac40:23a1🇺🇸 Cloudflare2a06:98c1:50::/45
PTRsullivan.ns.cloudflare.com
A108.162.195.161🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRsullivan.ns.cloudflare.com
A162.159.44.161Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRsullivan.ns.cloudflare.com
A172.64.35.161🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRsullivan.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.12.54, 172.67.193.175
IPv6 hints2606:4700:3030::6815:c36, 2606:4700:3035::ac43:c1af
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=6, name=cloudflare-ech.com
SOAdahlia.ns.cloudflare.comdns@cloudflare.com serial=2401287768

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=1776141812

Subdomains

www.rsi4u.org

Same first word

rsi4u.com
rsi4u.org

Similar names

rusi4.ru
sri4u.com
rusi4.com

DNS History

11 records (6 active, 5 former)

20162017201820192020202120222023202420252026NSdahlia.ns.cloudflare.comsullivan.ns.cloudflare.comns15.domaincontrol.comns16.domaincontrol.comMXmailstore1.secureserver.netsmtp.secureserver.netA104.21.12.54172.67.193.1752606:4700:3030::6815:c362606:4700:3035::ac43:c1af162.218.102.83
●NSdahlia.ns.cloudflare.com2026-04-04 → 2026-04-14 · 3 obs
○ 2017-12-30 02:04:54
● 2026-04-04 20:01:48
● 2026-04-14 05:11:28
○NSns15.domaincontrol.com2015-05-27 → 2017-12-30 · 4 obs
● 2015-05-27 19:21:04
● 2017-12-30 02:04:54
○ 2026-04-04 20:01:48
○ 2026-04-14 05:11:28
○NSns16.domaincontrol.com2015-05-27 → 2017-12-30 · 4 obs
● 2015-05-27 19:21:04
● 2017-12-30 02:04:54
○ 2026-04-04 20:01:48
○ 2026-04-14 05:11:28
●NSsullivan.ns.cloudflare.com2026-04-04 → 2026-04-14 · 3 obs
○ 2017-12-30 02:04:54
● 2026-04-04 20:01:48
● 2026-04-14 05:11:28
○MXmailstore1.secureserver.net2015-05-27 → 2017-12-30 · 4 obs
● 2015-05-27 19:21:04
● 2017-12-30 02:04:54
○ 2026-04-04 20:01:48
○ 2026-04-14 05:11:28
○MXsmtp.secureserver.net2015-05-27 → 2017-12-30 · 4 obs
● 2015-05-27 19:21:04
● 2017-12-30 02:04:54
○ 2026-04-04 20:01:48
○ 2026-04-14 05:11:28
●A104.21.12.542026-04-04 → 2026-04-14 · 3 obs
○ 2017-12-30 02:04:54
● 2026-04-04 20:01:48
● 2026-04-14 05:11:28
○A162.218.102.832015-05-27 → 2017-12-30 · 4 obs
● 2015-05-27 19:21:04
● 2017-12-30 02:04:54
○ 2026-04-04 20:01:48
○ 2026-04-14 05:11:28
●A172.67.193.1752026-04-04 → 2026-04-14 · 3 obs
○ 2017-12-30 02:04:54
● 2026-04-04 20:01:48
● 2026-04-14 05:11:28
●A2606:4700:3030::6815:c362026-04-04 → 2026-04-14 · 3 obs
○ 2017-12-30 02:04:54
● 2026-04-04 20:01:48
● 2026-04-14 05:11:28
●A2606:4700:3035::ac43:c1af2026-04-04 → 2026-04-14 · 3 obs
○ 2017-12-30 02:04:54
● 2026-04-04 20:01:48
● 2026-04-14 05:11:28

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
orgb0.org.afilias-nst.org, b2.org.afilias-nst.org-
rsi4u.orgdahlia.ns.cloudflare.com, sullivan.ns.cloudflare.com-

✅ Authoritative Response

Server:173.245.58.89

NS records: dahlia.ns.cloudflare.com, sullivan.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for rsi4u.org (unsigned zone)

⏱️ Timing

Total: 422ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.193.175, 104.21.12.54
AAAA22606:4700:3035::ac43:c1af, 2606:4700:3030::6815:c36
NS2dahlia.ns.cloudflare.com, sullivan.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1dahlia.ns.cloudflare.com dns.cloudflare.

Analysis

Hierarchy

The parent of www.rsi4u.org is rsi4u.org.

IP Addresses

rsi4u.org resolves to four IP numbers: 2606:4700:3030::6815:c36, 2606:4700:3035::ac43:c1af, 104.21.12.54 and 172.67.193.175.

Other host names such as mail.litsolve.com, aqueduct.io, theidylwildgroup.adultmoneymakers.com, syksd.net and onenightyourchoice.com share IPs with rsi4u.org.

Name Servers

rsi4u.org is delegated to two name servers: dahlia.ns.cloudflare.com and sullivan.ns.cloudflare.com.

rsi4u.org shares the same name server setup as us20pme.com, dickinsonmuseumcenter.org, ckconitsha.org, akdyw.com and hideowakamatsu-ph.com.

rsi4u.org at least partially shares name servers with other domains, for instance jamuwin-78.online, thevansmith.com, uwazii.com, sonclub.estate and realfoodco.cn.

These name servers are commonly used together with jaime.ns.cloudflare.com, sunny.ns.cloudflare.com and arely.ns.cloudflare.com.

Host names with six IP numbers:

dahlia.ns.cloudflare.com points to 2606:4700:50::adf5:3a59, 2803:f800:50::6ca2:c059, 2a06:98c1:50::ac40:2059, 108.162.192.89, 172.64.32.89 and 173.245.58.89.

sullivan.ns.cloudflare.com points to 2606:4700:58::a29f:2ca1, 2803:f800:50::6ca2:c3a1, 2a06:98c1:50::ac40:23a1, 108.162.195.161, 162.159.44.161 and 172.64.35.161.