guidebookedu.com - dns.ninja

guidebookedu.com

DNSSEC⚠️ Not signed
A2606:4700:3032::ac43:9434Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3033::6815:3788Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.55.136Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.148.52Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSarya.ns.cloudflare.com ⭐
NSoswald.ns.cloudflare.com
MXsmtp.secureserver.net ⭐
A216.69.141.71🇺🇸 AS398101216.69.140.0/22
PTRosplibsmtp01-v01.prod.phx3.secureserver.net
A216.69.141.84🇺🇸 AS398101216.69.140.0/22
PTRosplibsmtp02-v01.prod.phx3.secureserver.net
A216.69.141.113🇺🇸 AS398101216.69.140.0/22
PTRosplibsmtp03-v01.prod.phx3.secureserver.net
MXmailstore1.secureserver.net(10)
A216.69.141.78🇺🇸 AS398101216.69.140.0/22
PTRosplibsmtp01-v02.prod.phx3.secureserver.net
A216.69.141.114🇺🇸 AS398101216.69.140.0/22
PTRosplibsmtp03-v02.prod.phx3.secureserver.net
A216.69.141.162🇺🇸 AS398101216.69.140.0/22
PTRosplibsmtp02-v02.prod.phx3.secureserver.net
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.55.136, 172.67.148.52
IPv6 hints2606:4700:3032::ac43:9434, 2606:4700:3033::6815:3788
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=229, name=cloudflare-ech.com
SOAarya.ns.cloudflare.comdns@cloudflare.com serial=2406016893

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=1783011141

Same first word

guidebookedu.com

DNS History

16 records (8 active, 8 former)

2017201820192020202120222023202420252026NSarya.ns.cloudflare.comoswald.ns.cloudflare.comMXmailstore1.secureserver.netsmtp.secureserver.netA104.21.55.136172.67.148.522606:4700:3032::ac43:94342606:4700:3033::6815:3788104.28.14.2104.28.15.2188.114.96.0188.114.97.02400:cb00:2048:1::681c:e022400:cb00:2048:1::681c:f022a06:98c1:3120::2a06:98c1:3121::
●NSarya.ns.cloudflare.com2016-12-19 → 2026-07-02 · 2 obs
● 2016-12-19 21:45:18
● 2026-07-02 17:09:52
●NSoswald.ns.cloudflare.com2016-12-19 → 2026-07-02 · 2 obs
● 2016-12-19 21:45:18
● 2026-07-02 17:09:52
●MXmailstore1.secureserver.net2016-12-19 → 2026-07-02 · 2 obs
● 2016-12-19 21:45:18
● 2026-07-02 17:09:52
●MXsmtp.secureserver.net2016-12-19 → 2026-07-02 · 2 obs
● 2016-12-19 21:45:18
● 2026-07-02 17:09:52
●A104.21.55.1362026-02-19 → 2026-07-02 · 6 obs
○ 2017-12-22 14:52:24
● 2026-02-19 09:28:46
○ 2026-03-25 21:46:24
○ 2026-05-23 09:49:04
● 2026-05-25 06:10:16
● 2026-07-02 17:09:52
○A104.28.14.22016-12-19 → 2017-12-22 · 4 obs
● 2016-12-19 21:45:18
● 2017-12-22 14:52:24
○ 2026-02-19 09:28:46
○ 2026-07-02 17:09:52
○A104.28.15.22016-12-19 → 2017-12-22 · 4 obs
● 2016-12-19 21:45:18
● 2017-12-22 14:52:24
○ 2026-02-19 09:28:46
○ 2026-07-02 17:09:52
●A172.67.148.522026-02-19 → 2026-07-02 · 6 obs
○ 2017-12-22 14:52:24
● 2026-02-19 09:28:46
○ 2026-03-25 21:46:24
○ 2026-05-23 09:49:04
● 2026-05-25 06:10:16
● 2026-07-02 17:09:52
○A188.114.96.02026-03-25 → 2026-05-23 · 5 obs
○ 2026-02-19 09:28:46
● 2026-03-25 21:46:24
● 2026-05-23 09:49:04
○ 2026-05-25 06:10:16
○ 2026-07-02 17:09:52
○A188.114.97.02026-03-25 → 2026-05-23 · 5 obs
○ 2026-02-19 09:28:46
● 2026-03-25 21:46:24
● 2026-05-23 09:49:04
○ 2026-05-25 06:10:16
○ 2026-07-02 17:09:52
○A2400:cb00:2048:1::681c:e022016-12-19 → 2017-12-22 · 4 obs
● 2016-12-19 21:45:18
● 2017-12-22 14:52:24
○ 2026-02-19 09:28:46
○ 2026-07-02 17:09:52
○A2400:cb00:2048:1::681c:f022016-12-19 → 2017-12-22 · 4 obs
● 2016-12-19 21:45:18
● 2017-12-22 14:52:24
○ 2026-02-19 09:28:46
○ 2026-07-02 17:09:52
●A2606:4700:3032::ac43:94342026-02-19 → 2026-07-02 · 6 obs
○ 2017-12-22 14:52:24
● 2026-02-19 09:28:46
○ 2026-03-25 21:46:24
○ 2026-05-23 09:49:04
● 2026-05-25 06:10:16
● 2026-07-02 17:09:52
●A2606:4700:3033::6815:37882026-02-19 → 2026-07-02 · 6 obs
○ 2017-12-22 14:52:24
● 2026-02-19 09:28:46
○ 2026-03-25 21:46:24
○ 2026-05-23 09:49:04
● 2026-05-25 06:10:16
● 2026-07-02 17:09:52
○A2a06:98c1:3120::2026-03-25 → 2026-05-23 · 5 obs
○ 2026-02-19 09:28:46
● 2026-03-25 21:46:24
● 2026-05-23 09:49:04
○ 2026-05-25 06:10:16
○ 2026-07-02 17:09:52
○A2a06:98c1:3121::2026-03-25 → 2026-05-23 · 5 obs
○ 2026-02-19 09:28:46
● 2026-03-25 21:46:24
● 2026-05-23 09:49:04
○ 2026-05-25 06:10:16
○ 2026-07-02 17:09:52

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comb.gtld-servers.net, i.gtld-servers.net, g.gtld-servers.net, k.gtld-servers.net...-
guidebookedu.comarya.ns.cloudflare.com, oswald.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.193.218

NS records: arya.ns.cloudflare.com, oswald.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for guidebookedu.com (unsigned zone)

⏱️ Timing

Total: 1364ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.148.52, 104.21.55.136
AAAA22606:4700:3030::ac43:9434, 2606:4700:3033::6815:3788
NS2arya.ns.cloudflare.com, oswald.ns.cloudflare.com
MX2smtp.secureserver.net (pri: 0), mailstore1.secureserver.net (pri: 10)
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1arya.ns.cloudflare.com dns.cloudflare.co

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

guidebookedu.com points to the four IP addresses 104.21.55.136, 172.67.148.52, 2606:4700:3032::ac43:9434 and 2606:4700:3033::6815:3788.

Name Servers

DNS delegation for guidebookedu.com points to two name servers: arya.ns.cloudflare.com and oswald.ns.cloudflare.com.

Mail Servers

The MX records for guidebookedu.com point to two mail servers: mailstore1.secureserver.net and smtp.secureserver.net.

Both mailstore1.secureserver.net and smtp.secureserver.net point to three IP numbers: mailstore1.secureserver.net points to 216.69.141.78, 216.69.141.114 and 216.69.141.162, while smtp.secureserver.net points to 216.69.141.71, 216.69.141.84 and 216.69.141.113.