gurucoursework.com - dns.ninja

gurucoursework.com

DNSSEC⚠️ Not signed
A2606:4700:3030::ac43:cac5🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::6815:4d05🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.77.5Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.202.197🇺🇸 Cloudflare172.67.192.0/20 , 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
NSdina.ns.cloudflare.com
A2606:4700:50::adf5:3a6b🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdina.ns.cloudflare.com
A2803:f800:50::6ca2:c06b🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRdina.ns.cloudflare.com
A2a06:98c1:50::ac40:206b🇺🇸 Cloudflare2a06:98c1:50::/45
PTRdina.ns.cloudflare.com
A108.162.192.107🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdina.ns.cloudflare.com
A172.64.32.107🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdina.ns.cloudflare.com
A173.245.58.107🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdina.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.77.5, 172.67.202.197
IPv6 hints2606:4700:3030::ac43:cac5, 2606:4700:3037::6815:4d05
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=74, name=cloudflare-ech.com
SOAalfred.ns.cloudflare.comdns@cloudflare.com serial=2408291552

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=1784908207

Previously MX for

gurucoursework.com

Same first word

gurucoursework.com

DNS History

20 records (6 active, 14 former)

2017201820192020202120222023202420252026NSalfred.ns.cloudflare.comdina.ns.cloudflare.comns.securednsservices.comns1.onpromedia.comns2.onpromedia.comns2.securednsservices.comMXgurucoursework.commail.gurucoursework.comA104.21.77.5172.67.202.1972606:4700:3030::ac43:cac52606:4700:3037::6815:4d05108.61.242.16162.253.33.146188.114.96.0188.114.97.02606:4700:3031::ac43:cac52606:4700:3033::6815:4d052a06:98c1:3120::2a06:98c1:3121::
●NSalfred.ns.cloudflare.com2026-02-20 → 2026-07-24 · 3 obs
○ 2018-11-07 02:43:16
● 2026-02-20 17:06:16
● 2026-07-24 15:51:54
●NSdina.ns.cloudflare.com2026-02-20 → 2026-07-24 · 3 obs
○ 2018-11-07 02:43:16
● 2026-02-20 17:06:16
● 2026-07-24 15:51:54
○NSns.securednsservices.com2018-11-07 → 2018-11-07 · 4 obs
○ 2016-12-20 22:25:34
● 2018-11-07 02:43:16
○ 2026-02-20 17:06:16
○ 2026-07-24 15:51:54
○NSns1.onpromedia.com2016-12-20 → 2016-12-20 · 3 obs
● 2016-12-20 22:25:34
○ 2018-11-07 02:43:16
○ 2026-07-24 15:51:54
○NSns2.onpromedia.com2016-12-20 → 2016-12-20 · 3 obs
● 2016-12-20 22:25:34
○ 2018-11-07 02:43:16
○ 2026-07-24 15:51:54
○NSns2.securednsservices.com2018-11-07 → 2018-11-07 · 4 obs
○ 2016-12-20 22:25:34
● 2018-11-07 02:43:16
○ 2026-02-20 17:06:16
○ 2026-07-24 15:51:54
○MXgurucoursework.com2016-12-20 → 2016-12-20 · 3 obs
● 2016-12-20 22:25:34
○ 2018-11-07 02:43:16
○ 2026-07-24 15:51:54
○MXmail.gurucoursework.com2018-11-07 → 2018-11-07 · 4 obs
○ 2016-12-20 22:25:34
● 2018-11-07 02:43:16
○ 2026-02-20 17:06:16
○ 2026-07-24 15:51:54
●A104.21.77.52026-02-20 → 2026-07-24 · 9 obs
○ 2018-11-07 02:43:16
● 2026-02-20 17:06:16
○ 2026-03-29 20:32:12
● 2026-04-09 07:24:18
● 2026-04-09 13:59:36
○ 2026-05-06 05:21:30
○ 2026-05-15 15:25:16
● 2026-05-15 15:59:02
● 2026-07-24 15:51:54
○A108.61.242.162018-11-07 → 2018-11-07 · 4 obs
○ 2016-12-20 22:25:34
● 2018-11-07 02:43:16
○ 2026-02-20 17:06:16
○ 2026-07-24 15:51:54
○A162.253.33.1462016-12-20 → 2016-12-20 · 3 obs
● 2016-12-20 22:25:34
○ 2018-11-07 02:43:16
○ 2026-07-24 15:51:54
●A172.67.202.1972026-02-20 → 2026-07-24 · 9 obs
○ 2018-11-07 02:43:16
● 2026-02-20 17:06:16
○ 2026-03-29 20:32:12
● 2026-04-09 07:24:18
● 2026-04-09 13:59:36
○ 2026-05-06 05:21:30
○ 2026-05-15 15:25:16
● 2026-05-15 15:59:02
● 2026-07-24 15:51:54
○A188.114.96.02026-03-29 → 2026-05-15 · 8 obs
○ 2026-02-20 17:06:16
● 2026-03-29 20:32:12
○ 2026-04-09 07:24:18
○ 2026-04-09 13:59:36
● 2026-05-06 05:21:30
● 2026-05-15 15:25:16
○ 2026-05-15 15:59:02
○ 2026-07-24 15:51:54
○A188.114.97.02026-03-29 → 2026-05-15 · 8 obs
○ 2026-02-20 17:06:16
● 2026-03-29 20:32:12
○ 2026-04-09 07:24:18
○ 2026-04-09 13:59:36
● 2026-05-06 05:21:30
● 2026-05-15 15:25:16
○ 2026-05-15 15:59:02
○ 2026-07-24 15:51:54
●A2606:4700:3030::ac43:cac52026-07-20 → 2026-07-24 · 3 obs
○ 2026-05-26 09:09:40
● 2026-07-20 02:29:36
● 2026-07-24 15:51:54
○A2606:4700:3031::ac43:cac52026-02-20 → 2026-05-26 · 11 obs
○ 2018-11-07 02:43:16
● 2026-02-20 17:06:16
○ 2026-03-29 20:32:12
● 2026-04-09 07:24:18
● 2026-04-09 13:59:36
○ 2026-05-06 05:21:30
○ 2026-05-15 15:25:16
● 2026-05-15 15:59:02
● 2026-05-26 09:09:40
○ 2026-07-20 02:29:36
○ 2026-07-24 15:51:54
○A2606:4700:3033::6815:4d052026-02-20 → 2026-05-26 · 11 obs
○ 2018-11-07 02:43:16
● 2026-02-20 17:06:16
○ 2026-03-29 20:32:12
● 2026-04-09 07:24:18
● 2026-04-09 13:59:36
○ 2026-05-06 05:21:30
○ 2026-05-15 15:25:16
● 2026-05-15 15:59:02
● 2026-05-26 09:09:40
○ 2026-07-20 02:29:36
○ 2026-07-24 15:51:54
●A2606:4700:3037::6815:4d052026-07-20 → 2026-07-24 · 3 obs
○ 2026-05-26 09:09:40
● 2026-07-20 02:29:36
● 2026-07-24 15:51:54
○A2a06:98c1:3120::2026-03-29 → 2026-05-15 · 8 obs
○ 2026-02-20 17:06:16
● 2026-03-29 20:32:12
○ 2026-04-09 07:24:18
○ 2026-04-09 13:59:36
● 2026-05-06 05:21:30
● 2026-05-15 15:25:16
○ 2026-05-15 15:59:02
○ 2026-07-24 15:51:54
○A2a06:98c1:3121::2026-03-29 → 2026-05-15 · 8 obs
○ 2026-02-20 17:06:16
● 2026-03-29 20:32:12
○ 2026-04-09 07:24:18
○ 2026-04-09 13:59:36
● 2026-05-06 05:21:30
● 2026-05-15 15:25:16
○ 2026-05-15 15:59:02
○ 2026-07-24 15:51:54

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coml.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...-
gurucoursework.comdina.ns.cloudflare.com, alfred.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.192.107

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for gurucoursework.com (unsigned zone)

⏱️ Timing

Total: 161ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.202.197, 104.21.77.5
AAAA22606:4700:3037::6815:4d05, 2606:4700:3030::ac43:cac5
NS2alfred.ns.cloudflare.com, dina.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1alfred.ns.cloudflare.com dns.cloudflare.

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

gurucoursework.com points to the four IP addresses 104.21.77.5, 172.67.202.197, 2606:4700:3030::ac43:cac5 and 2606:4700:3037::6815:4d05.

paulinesplacessm.org, ahmedabuotaleb.com, buscandogente.com plus two other host names have IP numbers in common with gurucoursework.com.

Name Servers

DNS delegation for gurucoursework.com points to two name servers: alfred.ns.cloudflare.com and dina.ns.cloudflare.com.

The name server configuration of gurucoursework.com is shared with other domains, for instance amadeusleopold.com, rpa-consult.ru, inta-aivn.org and two others.

At least some of gurucoursework.com's name servers are shared with other domains, for example alltoytime.com, labirinto.coop, camaraitapuca.rs.gov.br and two more.

These name servers tend to appear together with the name servers dom.ns.cloudflare.com, ainsley.ns.cloudflare.com and dawn.ns.cloudflare.com, plus two others.

Hosts with 6 IP addresses each:

alfred.ns.cloudflare.com has IP addresses 108.162.195.131, 162.159.44.131 and 172.64.35.131, plus 3 other.

dina.ns.cloudflare.com has IP addresses 108.162.192.107, 172.64.32.107 and 173.245.58.107, plus 3 other.