good4study.ru - robtex.com

good4study.ru

DNSSEC⚠️ Not signed
A2606:4700:3033::ac43:cec4🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3034::6815:42b8🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.66.184Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.206.196🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSlia.ns.cloudflare.com ⭐
A2606:4700:50::adf5:3ab9🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRlia.ns.cloudflare.com
A2803:f800:50::6ca2:c0b9🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRlia.ns.cloudflare.com
A2a06:98c1:50::ac40:20b9🇺🇸 Cloudflare2a06:98c1:50::/45
PTRlia.ns.cloudflare.com
A108.162.192.185🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRlia.ns.cloudflare.com
A172.64.32.185🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRlia.ns.cloudflare.com
A173.245.58.185🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRlia.ns.cloudflare.com
NSsage.ns.cloudflare.com
A2606:4700:58::a29f:2cec🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRsage.ns.cloudflare.com
A2803:f800:50::6ca2:c3ec🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRsage.ns.cloudflare.com
A2a06:98c1:50::ac40:23ec🇺🇸 Cloudflare2a06:98c1:50::/45
PTRsage.ns.cloudflare.com
A108.162.195.236🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRsage.ns.cloudflare.com
A162.159.44.236Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRsage.ns.cloudflare.com
A172.64.35.236🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRsage.ns.cloudflare.com
TXT7230468fb60603edd2aed87dd8c24eaf85891ed6
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.66.184, 172.67.206.196
IPv6 hints2606:4700:3033::ac43:cec4, 2606:4700:3034::6815:42b8
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=43, name=cloudflare-ech.com
SOAlia.ns.cloudflare.comdns@cloudflare.com serial=2408296916

ru

DNSSEC🔒 Signed (DS record present)
NSa.dns.ripn.net ⭐
NSb.dns.ripn.net
NSc.tld-servers.ru
NSd.dns.ripn.net
NSe.dns.ripn.net
NSf.dns.ripn.net
SOAa.dns.ripn.nethostmaster@ripn.net serial=4069663
📈 Tranco rank: #455,461

Same first word

good4study.ru

DNS History

11 records (6 active, 5 former)

NSlia.ns.cloudflare.comsage.ns.cloudflare.comA104.21.66.184172.67.206.1962606:4700:3033::ac43:cec42606:4700:3034::6815:42b8188.114.96.0188.114.97.02606:4700:3036::ac43:cec42a06:98c1:3120::2a06:98c1:3121::
●NSlia.ns.cloudflare.com2026-06-15 → 2026-07-18 · 2 obs
● 2026-06-15 21:48:50
● 2026-07-18 20:02:54
●NSsage.ns.cloudflare.com2026-06-15 → 2026-07-18 · 2 obs
● 2026-06-15 21:48:50
● 2026-07-18 20:02:54
●A104.21.66.1842026-06-15 → 2026-07-18 · 4 obs
● 2026-06-15 21:48:50
○ 2026-06-19 05:04:24
● 2026-07-18 20:02:52
● 2026-07-18 20:02:54
●A172.67.206.1962026-06-15 → 2026-07-18 · 4 obs
● 2026-06-15 21:48:50
○ 2026-06-19 05:04:24
● 2026-07-18 20:02:52
● 2026-07-18 20:02:54
○A188.114.96.02026-06-19 → 2026-06-19 · 4 obs
○ 2026-06-15 21:48:50
● 2026-06-19 05:04:24
○ 2026-07-18 20:02:52
○ 2026-07-18 20:02:54
○A188.114.97.02026-06-19 → 2026-06-19 · 4 obs
○ 2026-06-15 21:48:50
● 2026-06-19 05:04:24
○ 2026-07-18 20:02:52
○ 2026-07-18 20:02:54
●A2606:4700:3033::ac43:cec42026-07-18 → 2026-07-18 · 3 obs
○ 2026-06-19 05:04:24
● 2026-07-18 20:02:52
● 2026-07-18 20:02:54
●A2606:4700:3034::6815:42b82026-06-15 → 2026-07-18 · 4 obs
● 2026-06-15 21:48:50
○ 2026-06-19 05:04:24
● 2026-07-18 20:02:52
● 2026-07-18 20:02:54
○A2606:4700:3036::ac43:cec42026-06-15 → 2026-06-15 · 3 obs
● 2026-06-15 21:48:50
○ 2026-06-19 05:04:24
○ 2026-07-18 20:02:54
○A2a06:98c1:3120::2026-06-19 → 2026-06-19 · 4 obs
○ 2026-06-15 21:48:50
● 2026-06-19 05:04:24
○ 2026-07-18 20:02:52
○ 2026-07-18 20:02:54
○A2a06:98c1:3121::2026-06-19 → 2026-06-19 · 4 obs
○ 2026-06-15 21:48:50
● 2026-06-19 05:04:24
○ 2026-07-18 20:02:52
○ 2026-07-18 20:02:54

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
rub.dns.ripn.net, d.dns.ripn.net, f.dns.ripn.net, e.dns.ripn.net...-
good4study.rusage.ns.cloudflare.com, lia.ns.cloudflare.com-

✅ Authoritative Response

Server:162.159.44.236

NS records: sage.ns.cloudflare.com, lia.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for good4study.ru (unsigned zone)

⏱️ Timing

Total: 1231ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.66.184, 172.67.206.196
AAAA22606:4700:3034::6815:42b8, 2606:4700:3033::ac43:cec4
NS2lia.ns.cloudflare.com, sage.ns.cloudflare.com
TXT17230468fb60603edd2aed87dd8c24eaf85891ed6
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1lia.ns.cloudflare.com dns.cloudflare.com

Analysis

IP Addresses

good4study.ru points to the four IP addresses 104.21.66.184, 172.67.206.196, 2606:4700:3033::ac43:cec4 and 2606:4700:3034::6815:42b8.

Two other host names, along with opus.ai, quindrevaltos.com and epub.gratis, also share IP numbers with good4study.ru.

Name Servers

The NS records for good4study.ru delegate to lia.ns.cloudflare.com and sage.ns.cloudflare.com.

good4study.ru shares its NS records with other domains, for example ulmic.ru, inspectionmaison.com, homeinspectionmontreal.com and two others.

There is at least partial name server overlap between good4study.ru and other domains — dalaoa.top, truerlein.com, jach.me and two more among them.

These name servers regularly appear alongside quentin.ns.cloudflare.com, blakely.ns.cloudflare.com, macy.ns.cloudflare.com and 3 other name servers in NS record sets.

DNS names with 6 IP addresses:

lia.ns.cloudflare.com maps to 108.162.192.185, 172.64.32.185, 173.245.58.185 and 3 additional IP addresses.

sage.ns.cloudflare.com maps to 108.162.195.236, 162.159.44.236, 172.64.35.236 and 3 additional IP addresses.