courtesycomputing.com - dns.ninja

courtesycomputing.com

DNSSEC⚠️ Not signed
A2606:4700:3031::ac43:b080🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3034::6815:1f79🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.31.121Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.176.128🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSdahlia.ns.cloudflare.com ⭐
A2606:4700:50::adf5:3a59🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdahlia.ns.cloudflare.com
A2803:f800:50::6ca2:c059🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRdahlia.ns.cloudflare.com
A2a06:98c1:50::ac40:2059🇺🇸 Cloudflare2a06:98c1:50::/45
PTRdahlia.ns.cloudflare.com
A108.162.192.89🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdahlia.ns.cloudflare.com
A172.64.32.89🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdahlia.ns.cloudflare.com
A173.245.58.89🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdahlia.ns.cloudflare.com
NSsullivan.ns.cloudflare.com
A2606:4700:58::a29f:2ca1🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRsullivan.ns.cloudflare.com
A2803:f800:50::6ca2:c3a1🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRsullivan.ns.cloudflare.com
A2a06:98c1:50::ac40:23a1🇺🇸 Cloudflare2a06:98c1:50::/45
PTRsullivan.ns.cloudflare.com
A108.162.195.161🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRsullivan.ns.cloudflare.com
A162.159.44.161Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRsullivan.ns.cloudflare.com
A172.64.35.161🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRsullivan.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.31.121, 172.67.176.128
IPv6 hints2606:4700:3031::ac43:b080, 2606:4700:3034::6815:1f79
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=68, name=cloudflare-ech.com
SOAdahlia.ns.cloudflare.comdns@cloudflare.com serial=2410972773

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=1786554999

Same first word

courtesycomputing.com

DNS History

14 records (6 active, 8 former)

201820192020202120222023202420252026NSdahlia.ns.cloudflare.comsullivan.ns.cloudflare.comns1.saints.netns5.dnsmadeeasy.comns6.dnsmadeeasy.comns7.dnsmadeeasy.comMXdx0.saints.netqueue.saints.netA104.21.31.121172.67.176.1282606:4700:3031::ac43:b0802606:4700:3034::6815:1f7938.33.213.8374.11.20.32
●NSdahlia.ns.cloudflare.com2026-03-22 → 2026-08-12 · 3 obs
○ 2017-06-08 15:34:06
● 2026-03-22 14:52:20
● 2026-08-12 17:25:48
○NSns1.saints.net2017-06-08 → 2017-06-08 · 3 obs
● 2017-06-08 15:34:06
○ 2026-03-22 14:52:20
○ 2026-08-12 17:25:48
○NSns5.dnsmadeeasy.com2017-06-08 → 2017-06-08 · 3 obs
● 2017-06-08 15:34:06
○ 2026-03-22 14:52:20
○ 2026-08-12 17:25:48
○NSns6.dnsmadeeasy.com2017-06-08 → 2017-06-08 · 3 obs
● 2017-06-08 15:34:06
○ 2026-03-22 14:52:20
○ 2026-08-12 17:25:48
○NSns7.dnsmadeeasy.com2017-06-08 → 2017-06-08 · 3 obs
● 2017-06-08 15:34:06
○ 2026-03-22 14:52:20
○ 2026-08-12 17:25:48
●NSsullivan.ns.cloudflare.com2026-03-22 → 2026-08-12 · 3 obs
○ 2017-06-08 15:34:06
● 2026-03-22 14:52:20
● 2026-08-12 17:25:48
○MXdx0.saints.net2017-06-08 → 2017-06-08 · 3 obs
● 2017-06-08 15:34:06
○ 2026-03-22 14:52:20
○ 2026-08-12 17:25:48
○MXqueue.saints.net2017-06-08 → 2017-06-08 · 3 obs
● 2017-06-08 15:34:06
○ 2026-03-22 14:52:20
○ 2026-08-12 17:25:48
●A104.21.31.1212026-08-12 → 2026-08-12 · 3 obs
○ 2026-04-15 20:56:24
● 2026-08-12 17:25:46
● 2026-08-12 17:25:48
●A172.67.176.1282026-08-12 → 2026-08-12 · 3 obs
○ 2026-04-15 20:56:24
● 2026-08-12 17:25:46
● 2026-08-12 17:25:48
●A2606:4700:3031::ac43:b0802026-08-12 → 2026-08-12 · 3 obs
○ 2026-04-15 20:56:24
● 2026-08-12 17:25:46
● 2026-08-12 17:25:48
●A2606:4700:3034::6815:1f792026-08-12 → 2026-08-12 · 3 obs
○ 2026-04-15 20:56:24
● 2026-08-12 17:25:46
● 2026-08-12 17:25:48
○A38.33.213.832026-03-22 → 2026-04-15 · 5 obs
○ 2017-06-08 15:34:06
● 2026-03-22 14:52:20
● 2026-04-15 20:56:24
○ 2026-08-12 17:25:46
○ 2026-08-12 17:25:48
○A74.11.20.322017-06-08 → 2017-06-08 · 3 obs
● 2017-06-08 15:34:06
○ 2026-03-22 14:52:20
○ 2026-08-12 17:25:48

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comf.gtld-servers.net, a.gtld-servers.net, g.gtld-servers.net, l.gtld-servers.net...-
courtesycomputing.comdahlia.ns.cloudflare.com, sullivan.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.195.161

NS records: dahlia.ns.cloudflare.com, sullivan.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for courtesycomputing.com (unsigned zone)

⏱️ Timing

Total: 167ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.176.128, 104.21.31.121
AAAA22606:4700:3031::ac43:b080, 2606:4700:3034::6815:1f79
NS2dahlia.ns.cloudflare.com, sullivan.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1dahlia.ns.cloudflare.com dns.cloudflare.

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

courtesycomputing.com has four IP addresses: 104.21.31.121, 172.67.176.128, 2606:4700:3031::ac43:b080 and 2606:4700:3034::6815:1f79.

Additional host names — 23830699414.quizela.com, photoartresource.com, trustguardmobile.com and two others — share IP numbers with courtesycomputing.com.

Name Servers

The NS records for courtesycomputing.com delegate to dahlia.ns.cloudflare.com and sullivan.ns.cloudflare.com.

courtesycomputing.com shares its name server setup with other domains, including (0x736578)ylespetites.com, aviser.org, androidrobotproductions.com and two others.

courtesycomputing.com has at least partial name server overlap with other domains, such as xn----itbkgb9adccau2a.com, kitchenspring.cn, ovb-adguard.pro and two others.

It is common to find these name servers paired with the name servers sunny.ns.cloudflare.com, lila.ns.cloudflare.com, arely.ns.cloudflare.com and dan.ns.cloudflare.com.

Host names with 6 IP numbers:

dahlia.ns.cloudflare.com maps to 108.162.192.89, 172.64.32.89, 173.245.58.89 and 3 additional IP addresses.

sullivan.ns.cloudflare.com maps to 108.162.195.161, 162.159.44.161, 172.64.35.161 and 3 additional IP addresses.