cmacourse.com - dns.ninja

cmacourse.com

DNSSEC⚠️ Not signed
A2606:4700:3031::6815:5f9f🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3032::ac43:91e9🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.95.159Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.145.233🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSgreg.ns.cloudflare.com ⭐
A2606:4700:58::adf5:3b73🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgreg.ns.cloudflare.com
A2803:f800:50::6ca2:c173🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRgreg.ns.cloudflare.com
A2a06:98c1:50::ac40:2173🇺🇸 Cloudflare2a06:98c1:50::/45
PTRgreg.ns.cloudflare.com
A108.162.193.115🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgreg.ns.cloudflare.com
A172.64.33.115🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgreg.ns.cloudflare.com
A173.245.59.115🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgreg.ns.cloudflare.com
NSmaria.ns.cloudflare.com
A2606:4700:50::adf5:3ac0🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmaria.ns.cloudflare.com
A2803:f800:50::6ca2:c0c0🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRmaria.ns.cloudflare.com
A2a06:98c1:50::ac40:20c0🇺🇸 Cloudflare2a06:98c1:50::/45
PTRmaria.ns.cloudflare.com
A108.162.192.192🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmaria.ns.cloudflare.com
A172.64.32.192🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmaria.ns.cloudflare.com
A173.245.58.192🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmaria.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.95.159, 172.67.145.233
IPv6 hints2606:4700:3031::6815:5f9f, 2606:4700:3032::ac43:91e9
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=62, name=cloudflare-ech.com
SOAgreg.ns.cloudflare.comdns@cloudflare.com serial=2405749396

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=1783406301

Same first word

cmacourse.com

Similar names

macsource.com
secumaroc.com
securacom.com
maccourse.com
macsource.de
camcourse.com
accomsure.com
caromcues.com
cursomeca.com
macsource.ch
securacom.net
cursomeca.net
acmsource.com
sourcemac.com
camsource.com
coursecam.net
amcsource.com
cursomeca.es
macsource.biz
sourcecam.com
coursecam.com

DNS History

18 records (6 active, 12 former)

20162017201820192020202120222023202420252026NSgreg.ns.cloudflare.commaria.ns.cloudflare.comA104.21.95.159172.67.145.2332606:4700:3031::6815:5f9f2606:4700:3032::ac43:91e9104.27.186.114104.27.187.114188.114.96.0188.114.97.02400:cb00:2048:1::681b:ba722400:cb00:2048:1::681b:bb722606:4700:3030::681b:ba722606:4700:3035::681b:bb722606:4700:3036::ac43:91e92606:4700:3037::6815:5f9f2a06:98c1:3120::2a06:98c1:3121::
●NSgreg.ns.cloudflare.com2015-12-10 → 2026-07-07 · 2 obs
● 2015-12-10 09:00:42
● 2026-07-07 06:38:46
●NSmaria.ns.cloudflare.com2015-12-10 → 2026-07-07 · 2 obs
● 2015-12-10 09:00:42
● 2026-07-07 06:38:46
●A104.21.95.1592026-03-05 → 2026-07-07 · 9 obs
○ 2020-03-23 17:35:34
● 2026-03-05 06:56:16
● 2026-03-10 11:58:30
○ 2026-03-15 12:28:50
● 2026-03-17 10:37:40
● 2026-03-28 14:02:08
○ 2026-04-07 08:00:20
● 2026-04-21 21:22:54
● 2026-07-07 06:38:46
○A104.27.186.1142015-12-10 → 2020-03-23 · 4 obs
● 2015-12-10 09:00:42
● 2020-03-23 17:35:34
○ 2026-03-05 06:56:16
○ 2026-07-07 06:38:46
○A104.27.187.1142015-12-10 → 2020-03-23 · 4 obs
● 2015-12-10 09:00:42
● 2020-03-23 17:35:34
○ 2026-03-05 06:56:16
○ 2026-07-07 06:38:46
●A172.67.145.2332026-03-05 → 2026-07-07 · 9 obs
○ 2020-03-23 17:35:34
● 2026-03-05 06:56:16
● 2026-03-10 11:58:30
○ 2026-03-15 12:28:50
● 2026-03-17 10:37:40
● 2026-03-28 14:02:08
○ 2026-04-07 08:00:20
● 2026-04-21 21:22:54
● 2026-07-07 06:38:46
○A188.114.96.02026-03-15 → 2026-04-07 · 7 obs
○ 2026-03-10 11:58:30
● 2026-03-15 12:28:50
○ 2026-03-17 10:37:40
○ 2026-03-28 14:02:08
● 2026-04-07 08:00:20
○ 2026-04-21 21:22:54
○ 2026-07-07 06:38:46
○A188.114.97.02026-03-15 → 2026-04-07 · 7 obs
○ 2026-03-10 11:58:30
● 2026-03-15 12:28:50
○ 2026-03-17 10:37:40
○ 2026-03-28 14:02:08
● 2026-04-07 08:00:20
○ 2026-04-21 21:22:54
○ 2026-07-07 06:38:46
○A2400:cb00:2048:1::681b:ba722017-03-28 → 2017-03-28 · 4 obs
○ 2015-12-10 09:00:42
● 2017-03-28 10:54:32
○ 2020-03-23 17:35:34
○ 2026-07-07 06:38:46
○A2400:cb00:2048:1::681b:bb722017-03-28 → 2017-03-28 · 4 obs
○ 2015-12-10 09:00:42
● 2017-03-28 10:54:32
○ 2020-03-23 17:35:34
○ 2026-07-07 06:38:46
○A2606:4700:3030::681b:ba722020-03-23 → 2020-03-23 · 4 obs
○ 2017-03-28 10:54:32
● 2020-03-23 17:35:34
○ 2026-03-05 06:56:16
○ 2026-07-07 06:38:46
●A2606:4700:3031::6815:5f9f2026-07-07 → 2026-07-07 · 3 obs
○ 2026-06-17 20:25:54
● 2026-07-07 06:38:42
● 2026-07-07 06:38:46
●A2606:4700:3032::ac43:91e92026-07-07 → 2026-07-07 · 3 obs
○ 2026-06-17 20:25:54
● 2026-07-07 06:38:42
● 2026-07-07 06:38:46
○A2606:4700:3035::681b:bb722020-03-23 → 2020-03-23 · 4 obs
○ 2017-03-28 10:54:32
● 2020-03-23 17:35:34
○ 2026-03-05 06:56:16
○ 2026-07-07 06:38:46
○A2606:4700:3036::ac43:91e92026-03-05 → 2026-06-17 · 11 obs
○ 2020-03-23 17:35:34
● 2026-03-05 06:56:16
● 2026-03-10 11:58:30
○ 2026-03-15 12:28:50
● 2026-03-17 10:37:40
● 2026-03-28 14:02:08
○ 2026-04-07 08:00:20
● 2026-04-21 21:22:54
● 2026-06-17 20:25:54
○ 2026-07-07 06:38:42
○ 2026-07-07 06:38:46
○A2606:4700:3037::6815:5f9f2026-03-05 → 2026-06-17 · 11 obs
○ 2020-03-23 17:35:34
● 2026-03-05 06:56:16
● 2026-03-10 11:58:30
○ 2026-03-15 12:28:50
● 2026-03-17 10:37:40
● 2026-03-28 14:02:08
○ 2026-04-07 08:00:20
● 2026-04-21 21:22:54
● 2026-06-17 20:25:54
○ 2026-07-07 06:38:42
○ 2026-07-07 06:38:46
○A2a06:98c1:3120::2026-03-15 → 2026-04-07 · 7 obs
○ 2026-03-10 11:58:30
● 2026-03-15 12:28:50
○ 2026-03-17 10:37:40
○ 2026-03-28 14:02:08
● 2026-04-07 08:00:20
○ 2026-04-21 21:22:54
○ 2026-07-07 06:38:46
○A2a06:98c1:3121::2026-03-15 → 2026-04-07 · 7 obs
○ 2026-03-10 11:58:30
● 2026-03-15 12:28:50
○ 2026-03-17 10:37:40
○ 2026-03-28 14:02:08
● 2026-04-07 08:00:20
○ 2026-04-21 21:22:54
○ 2026-07-07 06:38:46

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comm.gtld-servers.net, g.gtld-servers.net, a.gtld-servers.net, e.gtld-servers.net...-
cmacourse.comgreg.ns.cloudflare.com, maria.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.192.192

NS records: greg.ns.cloudflare.com, maria.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cmacourse.com (unsigned zone)

⏱️ Timing

Total: 753ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.95.159, 172.67.145.233
AAAA22606:4700:3032::ac43:91e9, 2606:4700:3031::6815:5f9f
NS2greg.ns.cloudflare.com, maria.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1greg.ns.cloudflare.com dns.cloudflare.co

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

cmacourse.com directs to four IP numbers, which are 104.21.95.159, 172.67.145.233, 2606:4700:3031::6815:5f9f and 2606:4700:3032::ac43:91e9.

Among the host names that share IP numbers with cmacourse.com are owlstat.com, trutechsystems-1.cfd, fm2020.com and two others.

Name Servers

cmacourse.com is delegated to two name servers: greg.ns.cloudflare.com and maria.ns.cloudflare.com.

cmacourse.com has the same name server delegation as a number of other domains, such as aaemtlabs.com, bangtrans.com, ryan-williams.net and two more.

There is at least partial name server overlap between cmacourse.com and other domains — steamhk.com, kellehertire.com, ishivansh.com and two more among them.

These name servers are routinely deployed together with the name servers dana.ns.cloudflare.com.

Host names resolving to 6 IP numbers:

greg.ns.cloudflare.com resolves to 108.162.193.115, 172.64.33.115, 173.245.59.115 and 3 other IP addresses.

maria.ns.cloudflare.com resolves to 108.162.192.192, 172.64.32.192, 173.245.58.192 and 3 other IP addresses.