grade5theory.com - robtex.com

grade5theory.com

DNSSEC⚠️ Not signed
A2606:4700:3031::6815:241🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::ac43:80d8🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.2.65Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.128.216🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSsunny.ns.cloudflare.com ⭐
A2606:4700:50::a29f:26a6🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRsunny.ns.cloudflare.com
A2803:f800:50::6ca2:c2a6🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRsunny.ns.cloudflare.com
A2a06:98c1:50::ac40:22a6🇺🇸 Cloudflare2a06:98c1:50::/45
PTRsunny.ns.cloudflare.com
A108.162.194.166🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRsunny.ns.cloudflare.com
A162.159.38.166Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRsunny.ns.cloudflare.com
A172.64.34.166🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRsunny.ns.cloudflare.com
NSyoxall.ns.cloudflare.com
A2606:4700:58::a29f:2c2f🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRyoxall.ns.cloudflare.com
A2803:f800:50::6ca2:c32f🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRyoxall.ns.cloudflare.com
A2a06:98c1:50::ac40:232f🇺🇸 Cloudflare2a06:98c1:50::/45
PTRyoxall.ns.cloudflare.com
A108.162.195.47🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRyoxall.ns.cloudflare.com
A162.159.44.47Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRyoxall.ns.cloudflare.com
A172.64.35.47🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRyoxall.ns.cloudflare.com
MXaspmx.l.google.com ⭐
A2607:f8b0:4004:c08::1a🇺🇸 Google2607:f8b0:4004::/48
PTRbi-in-f26.1e100.net
A142.251.163.26🇺🇸 Google142.251.163.0/24
PTRwv-in-f26.1e100.net
MXalt1.aspmx.l.google.com(3)
A2800:3f0:4003:c0f::1b🇨🇱 Google2800:3f0:4003::/48
A108.177.123.26🇺🇸 Google108.177.123.0/24
PTRlcscld-in-f26.1e100.net
MXalt2.aspmx.l.google.com(3)
A2a00:1450:400b:c02::1a🇮🇪 Google2a00:1450:400b::/48
PTRdj-in-f26.1e100.net
A172.253.116.26🇺🇸 Google172.253.116.0/24
PTRdj-in-f26.1e100.net
MXaspmx2.googlemail.com(5)
A2800:3f0:4003:c0f::1b🇨🇱 Google2800:3f0:4003::/48
A108.177.123.27🇺🇸 Google108.177.123.0/24
PTRlcscld-in-f27.1e100.net
MXaspmx3.googlemail.com(5)
A2a00:1450:400b:c02::1b🇮🇪 Google2a00:1450:400b::/48
PTRdj-in-f27.1e100.net
A172.253.116.27🇺🇸 Google172.253.116.0/24
PTRdj-in-f27.1e100.net
MXaspmx4.googlemail.com(5)
A2a00:1450:4009:c0f::1a🇬🇧 Google2a00:1450:4009::/48
PTRyulhrs-in-f26.1e100.net
A192.178.223.27🇺🇸 Google192.178.223.0/24
PTRyulhrs-in-f27.1e100.net
MXaspmx5.googlemail.com(5)
A2a00:1450:400c:c23::1b🇧🇪 Google2a00:1450:400c::/48
PTRyubrupd-in-f27.1e100.net
A172.253.157.27🇺🇸 Google172.253.0.0/16
PTRyubrupd-in-f27.1e100.net
TXTas=1265624674
TXTas=1495641250
TXTgoogle-site-verification=Fdv0jnguW59uUyJ8lPjheuMkMBgaMMC8_MYBLSGXZJ4
TXTgoogle-site-verification=hQj4K78CF5_pZiPQD51IH-a_-MbZc3kaJWuN4t_y2ug
TXTv=spf1 include:_spf.google.com include:servers.mcsv.net include:_mailcust.gan...
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.2.65, 172.67.128.216
IPv6 hints2606:4700:3031::6815:241, 2606:4700:3037::ac43:80d8
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=140, name=cloudflare-ech.com
SOAsunny.ns.cloudflare.comdns@cloudflare.com serial=2410180529

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1785704982

Same first word

grade5theory.com
grade5theory.org

DNS History

19 records (13 active, 6 former)

201820192020202120222023202420252026NSsunny.ns.cloudflare.comyoxall.ns.cloudflare.coma.dns.gandi.netb.dns.gandi.netc.dns.gandi.netMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comaspmx.l.google.comaspmx2.googlemail.comaspmx3.googlemail.comaspmx4.googlemail.comaspmx5.googlemail.comA104.21.2.65172.67.128.2162606:4700:3031::6815:2412606:4700:3037::ac43:80d82606:4700:3033::ac43:80d82606:4700:3036::6815:24152.209.176.43
○NSa.dns.gandi.net2017-11-10 → 2017-11-10 · 3 obs
● 2017-11-10 08:01:42
○ 2026-03-30 00:39:18
○ 2026-08-02 21:35:44
○NSb.dns.gandi.net2017-11-10 → 2017-11-10 · 3 obs
● 2017-11-10 08:01:42
○ 2026-03-30 00:39:18
○ 2026-08-02 21:35:44
○NSc.dns.gandi.net2017-11-10 → 2017-11-10 · 3 obs
● 2017-11-10 08:01:42
○ 2026-03-30 00:39:18
○ 2026-08-02 21:35:44
●NSsunny.ns.cloudflare.com2026-03-30 → 2026-08-02 · 3 obs
○ 2017-11-10 08:01:42
● 2026-03-30 00:39:18
● 2026-08-02 21:35:44
●NSyoxall.ns.cloudflare.com2026-03-30 → 2026-08-02 · 3 obs
○ 2017-11-10 08:01:42
● 2026-03-30 00:39:18
● 2026-08-02 21:35:44
●MXalt1.aspmx.l.google.com2017-11-10 → 2026-08-02 · 2 obs
● 2017-11-10 08:01:42
● 2026-08-02 21:35:44
●MXalt2.aspmx.l.google.com2017-11-10 → 2026-08-02 · 2 obs
● 2017-11-10 08:01:42
● 2026-08-02 21:35:44
●MXaspmx.l.google.com2017-11-10 → 2026-08-02 · 2 obs
● 2017-11-10 08:01:42
● 2026-08-02 21:35:44
●MXaspmx2.googlemail.com2017-11-10 → 2026-08-02 · 2 obs
● 2017-11-10 08:01:42
● 2026-08-02 21:35:44
●MXaspmx3.googlemail.com2017-11-10 → 2026-08-02 · 2 obs
● 2017-11-10 08:01:42
● 2026-08-02 21:35:44
●MXaspmx4.googlemail.com2017-11-10 → 2026-08-02 · 2 obs
● 2017-11-10 08:01:42
● 2026-08-02 21:35:44
●MXaspmx5.googlemail.com2017-11-10 → 2026-08-02 · 2 obs
● 2017-11-10 08:01:42
● 2026-08-02 21:35:44
●A104.21.2.652026-03-30 → 2026-08-02 · 3 obs
○ 2017-11-10 08:01:42
● 2026-03-30 00:39:18
● 2026-08-02 21:35:44
●A172.67.128.2162026-03-30 → 2026-08-02 · 3 obs
○ 2017-11-10 08:01:42
● 2026-03-30 00:39:18
● 2026-08-02 21:35:44
●A2606:4700:3031::6815:2412026-07-01 → 2026-08-02 · 3 obs
○ 2026-06-12 20:31:42
● 2026-07-01 15:19:22
● 2026-08-02 21:35:44
○A2606:4700:3033::ac43:80d82026-03-30 → 2026-06-12 · 5 obs
○ 2017-11-10 08:01:42
● 2026-03-30 00:39:18
● 2026-06-12 20:31:42
○ 2026-07-01 15:19:22
○ 2026-08-02 21:35:44
○A2606:4700:3036::6815:2412026-03-30 → 2026-06-12 · 5 obs
○ 2017-11-10 08:01:42
● 2026-03-30 00:39:18
● 2026-06-12 20:31:42
○ 2026-07-01 15:19:22
○ 2026-08-02 21:35:44
●A2606:4700:3037::ac43:80d82026-07-01 → 2026-08-02 · 3 obs
○ 2026-06-12 20:31:42
● 2026-07-01 15:19:22
● 2026-08-02 21:35:44
○A52.209.176.432017-11-10 → 2017-11-10 · 3 obs
● 2017-11-10 08:01:42
○ 2026-03-30 00:39:18
○ 2026-08-02 21:35:44

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coml.gtld-servers.net, k.gtld-servers.net, m.gtld-servers.net, e.gtld-servers.net...-
grade5theory.comsunny.ns.cloudflare.com, yoxall.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.194.166

NS records: sunny.ns.cloudflare.com, yoxall.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for grade5theory.com (unsigned zone)

⏱️ Timing

Total: 209ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.2.65, 172.67.128.216
AAAA22606:4700:3037::ac43:80d8, 2606:4700:3031::6815:241
NS2sunny.ns.cloudflare.com, yoxall.ns.cloudflare.com
MX7ASPMX.L.GOOGLE.com (pri: 1), ALT1.ASPMX.L.GOOGLE.com (pri: 3)...
TXT5as=1265624674, as=1495641250...
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1sunny.ns.cloudflare.com dns.cloudflare.c

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (sunny.ns.cloudflare.com, sunny.ns.cloudflare.com, sunny.ns.cloudflare.com...)

Analysis

IP Addresses

grade5theory.com points to the four IP addresses 104.21.2.65, 172.67.128.216, 2606:4700:3031::6815:241 and 2606:4700:3037::ac43:80d8.

mp3juices.space, qazzian.com, atlanticpediatricdeviceconsortium.org plus two other host names have IP numbers in common with grade5theory.com.

Name Servers

DNS delegation for grade5theory.com points to two name servers: sunny.ns.cloudflare.com and yoxall.ns.cloudflare.com.

The name server configuration of grade5theory.com is shared with other domains, for instance lefty.pictures, rollbit-bet.com, arredamentogastronomico.com and two others.

There is at least partial name server overlap between grade5theory.com and other domains — katrinmaass.com, fiveg.cash, trustmovie2011.com and two more among them.

The name servers sullivan.ns.cloudflare.com, ada.ns.cloudflare.com and owen.ns.cloudflare.com are often found in combination with these name servers.

Hosts with 6 IP addresses each:

sunny.ns.cloudflare.com has IP addresses 108.162.194.166, 162.159.38.166 and 172.64.34.166, plus 3 other.

yoxall.ns.cloudflare.com has IP addresses 108.162.195.47, 162.159.44.47 and 172.64.35.47, plus 3 other.

Mail Servers

grade5theory.com accepts email via 7 mail servers: aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx4.googlemail.com and 4 other.

At least some of the mail servers used by grade5theory.com are shared with other domains: newown.co.in, ns500754.ns500731.ns500731.ns500742.ns500704.ns500704.ns500671.ns500705.ns500671.ns500291.ns500671.ns500666.ns500153.tenderladiesbz.com, ns500742.ns500671.ns500754.ns500671.ns500671.ns500742.ns500742.ns500705.ns500688.ns500671.ns500649.ns500704.ns500666.tenderladiesbz.com and two others among them.

These mail servers are often deployed together with alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, aspmx.l.google.com and 3 other mail servers.

Host names pointing to two IP addresses:

aspmx2.googlemail.com has two IP addresses: 108.177.123.27 and 2800:3f0:4003:c0f::1b.

aspmx3.googlemail.com has two IP addresses: 172.253.116.27 and 2a00:1450:400b:c02::1b.

aspmx4.googlemail.com has two IP addresses: 192.178.223.27 and 2a00:1450:4009:c0f::1a.

aspmx5.googlemail.com has two IP addresses: 172.253.157.27 and 2a00:1450:400c:c23::1b.

aspmx.l.google.com has two IP addresses: 142.251.163.26 and 2607:f8b0:4004:c08::1a.

alt1.aspmx.l.google.com has two IP addresses: 108.177.123.26 and 2800:3f0:4003:c0f::1b.

alt2.aspmx.l.google.com has two IP addresses: 172.253.116.26 and 2a00:1450:400b:c02::1a.

Host names pointing to 2800:3f0:4003:c0f::1b IP addresses: aspmx2.googlemail.com and alt1.aspmx.l.google.com.