37ctech.com - dns.ninja

37ctech.com

DNSSEC⚠️ Not signed
A2606:4700:3033::ac43:aded🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::6815:1ed3🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.30.211Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.173.237🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSpenny.ns.cloudflare.com ⭐
A2606:4700:50::a29f:267c🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRpenny.ns.cloudflare.com
A2803:f800:50::6ca2:c27c🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRpenny.ns.cloudflare.com
A2a06:98c1:50::ac40:227c🇺🇸 Cloudflare2a06:98c1:50::/45
PTRpenny.ns.cloudflare.com
A108.162.194.124🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRpenny.ns.cloudflare.com
A162.159.38.124Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRpenny.ns.cloudflare.com
A172.64.34.124🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRpenny.ns.cloudflare.com
NSreese.ns.cloudflare.com
A2606:4700:58::a29f:2c75🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRreese.ns.cloudflare.com
A2803:f800:50::6ca2:c375🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRreese.ns.cloudflare.com
A2a06:98c1:50::ac40:2375🇺🇸 Cloudflare2a06:98c1:50::/45
PTRreese.ns.cloudflare.com
A108.162.195.117🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRreese.ns.cloudflare.com
A162.159.44.117Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRreese.ns.cloudflare.com
A172.64.35.117🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRreese.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.30.211, 172.67.173.237
IPv6 hints2606:4700:3033::ac43:aded, 2606:4700:3035::6815:1ed3
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=219, name=cloudflare-ech.com
SOApenny.ns.cloudflare.comdns@cloudflare.com serial=2405037015

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=1782650720

Subdomains

www.37ctech.com

Same first word

37ctech.com

DNS History

15 records (6 active, 9 former)

20162017201820192020202120222023202420252026NSpenny.ns.cloudflare.comreese.ns.cloudflare.comf1g1ns1.dnspod.netf1g1ns2.dnspod.netjuming.dnsdun.comjuming.dnsdun.netA104.21.30.211172.67.173.2372606:4700:3033::ac43:aded2606:4700:3035::6815:1ed3112.125.17.103120.26.122.21172.107.48.1522606:4700:3032::ac43:aded2606:4700:3033::6815:1ed3
○NSf1g1ns1.dnspod.net2015-12-17 → 2016-03-25 · 4 obs
● 2015-12-17 04:49:12
● 2016-03-25 12:50:12
○ 2016-12-09 12:04:10
○ 2026-06-28 13:03:16
○NSf1g1ns2.dnspod.net2015-12-17 → 2016-03-25 · 4 obs
● 2015-12-17 04:49:12
● 2016-03-25 12:50:12
○ 2016-12-09 12:04:10
○ 2026-06-28 13:03:16
○NSjuming.dnsdun.com2016-12-09 → 2016-12-09 · 4 obs
○ 2016-03-25 12:50:12
● 2016-12-09 12:04:10
○ 2026-02-14 19:30:34
○ 2026-06-28 13:03:16
○NSjuming.dnsdun.net2016-12-09 → 2016-12-09 · 4 obs
○ 2016-03-25 12:50:12
● 2016-12-09 12:04:10
○ 2026-02-14 19:30:34
○ 2026-06-28 13:03:16
●NSpenny.ns.cloudflare.com2026-02-14 → 2026-06-28 · 3 obs
○ 2016-12-09 12:04:10
● 2026-02-14 19:30:34
● 2026-06-28 13:03:16
●NSreese.ns.cloudflare.com2026-02-14 → 2026-06-28 · 3 obs
○ 2016-12-09 12:04:10
● 2026-02-14 19:30:34
● 2026-06-28 13:03:16
●A104.21.30.2112026-02-14 → 2026-06-28 · 3 obs
○ 2017-08-07 22:39:12
● 2026-02-14 19:30:34
● 2026-06-28 13:03:16
○A112.125.17.1032015-06-28 → 2015-06-28 · 3 obs
● 2015-06-28 12:02:56
○ 2015-12-17 04:49:12
○ 2026-06-28 13:03:16
○A120.26.122.212015-12-17 → 2015-12-17 · 4 obs
○ 2015-06-28 12:02:56
● 2015-12-17 04:49:12
○ 2016-03-25 12:50:12
○ 2026-06-28 13:03:16
○A172.107.48.1522017-08-07 → 2017-08-07 · 4 obs
○ 2016-03-25 12:50:12
● 2017-08-07 22:39:12
○ 2026-02-14 19:30:34
○ 2026-06-28 13:03:16
●A172.67.173.2372026-02-14 → 2026-06-28 · 3 obs
○ 2017-08-07 22:39:12
● 2026-02-14 19:30:34
● 2026-06-28 13:03:16
○A2606:4700:3032::ac43:aded2026-02-14 → 2026-06-13 · 4 obs
○ 2017-08-07 22:39:12
● 2026-02-14 19:30:34
● 2026-06-13 19:33:10
○ 2026-06-28 13:03:16
○A2606:4700:3033::6815:1ed32026-02-14 → 2026-06-13 · 4 obs
○ 2017-08-07 22:39:12
● 2026-02-14 19:30:34
● 2026-06-13 19:33:10
○ 2026-06-28 13:03:16
●A2606:4700:3033::ac43:aded2026-06-28 → 2026-06-28 · 2 obs
○ 2026-06-13 19:33:10
● 2026-06-28 13:03:16
●A2606:4700:3035::6815:1ed32026-06-28 → 2026-06-28 · 2 obs
○ 2026-06-13 19:33:10
● 2026-06-28 13:03:16

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coml.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...-
37ctech.compenny.ns.cloudflare.com, reese.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.194.124

NS records: penny.ns.cloudflare.com, reese.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 37ctech.com (unsigned zone)

⏱️ Timing

Total: 184ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.30.211, 172.67.173.237
AAAA22606:4700:3033::ac43:aded, 2606:4700:3035::6815:1ed3
NS2penny.ns.cloudflare.com, reese.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1penny.ns.cloudflare.com dns.cloudflare.c

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

www.37ctech.com is delegated beneath 37ctech.com.

IP Addresses

37ctech.com directs to four IP numbers, which are 104.21.30.211, 172.67.173.237, 2606:4700:3033::ac43:aded and 2606:4700:3035::6815:1ed3.

www.hechangquan.com, rapim.ac.in, directcpi.com plus two other host names have IP numbers in common with 37ctech.com.

Name Servers

The NS records for 37ctech.com delegate to penny.ns.cloudflare.com and reese.ns.cloudflare.com.

The name server configuration of 37ctech.com is shared with other domains, for instance shfeisu.com, leyidz.com, puzhiling.com and two others.

There is at least partial name server overlap between 37ctech.com and other domains — ther.online, omah.eu, wevo.online and two more among them.

The name servers violet.ns.cloudflare.com, amalia.ns.cloudflare.com and donald.ns.cloudflare.com are often found in combination with these name servers.

Hosts with 6 IP addresses each:

penny.ns.cloudflare.com maps to 108.162.194.124, 162.159.38.124, 172.64.34.124 and 3 additional IP addresses.

reese.ns.cloudflare.com maps to 108.162.195.117, 162.159.44.117, 172.64.35.117 and 3 additional IP addresses.