`coupling.biz`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::ac43:b9df^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::6815:33cc^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.51.204^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.185.223^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`abby.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a64^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`abby.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c064^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`abby.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2064^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`abby.ns.cloudflare.com`
		A	108.162.192.100^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`abby.ns.cloudflare.com`
		A	172.64.32.100^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`abby.ns.cloudflare.com`
		A	173.245.58.100^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`abby.ns.cloudflare.com`
NS	`rajeev.ns.cloudflare.com`
		A	2606:4700:58::adf5:3be0^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rajeev.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1e0^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`rajeev.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21e0^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`rajeev.ns.cloudflare.com`
		A	108.162.193.224^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rajeev.ns.cloudflare.com`
		A	172.64.33.224^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rajeev.ns.cloudflare.com`
		A	173.245.59.224^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rajeev.ns.cloudflare.com`
MX	`mx4.emailowl.com` ⭐
		A	207.246.121.203^{🇺🇸 AS-VULTR207.246.120.0/21 Vultr Assigned Prefix}
			PTR	`mx4.emailowl.com`
MX	`mx5.emailowl.com` ⭐
		A	45.63.17.188^{🇺🇸 AS-VULTR45.63.16.0/21 Vultr Assigned Prefix}
			PTR	`mx5.emailowl.com`
MX	`mx6.emailowl.com` ⭐
		A	107.191.41.169^{🇺🇸 AS-VULTR107.191.40.0/22 Vultr Assigned Prefix}
			PTR	`mx6.emailowl.com`
TXT	`v=spf1 a mx -all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.51.204, 172.67.185.223
		IPv6 hints	2606:4700:3030::ac43:b9df, 2606:4700:3036::6815:33cc
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=238, name=cloudflare-ech.com
SOA	`abby.ns.cloudflare.com`dns@cloudflare.com serial=2400855689

`biz`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld.biz` ⭐
	NS	`b.gtld.biz`
	NS	`c.gtld.biz`
	NS	`m.gtld.biz`
	NS	`n.gtld.biz`
	NS	`w.gtld.biz`
	NS	`x.gtld.biz`
	NS	`y.gtld.biz`
	SOA	`a.gtld.biz`admin@tldns.godaddy serial=1776009925

Same first word

coupling.ru

coupling.net

coupling.biz

coupling.media

coupling.nl

coupling.org

coupling.de

coupling.parts

coupling.it

coupling.pw

Similar names

upclogin.com

gocuplin.com

plugcoin.com

coplugin.com

pluginoc.net

coinplug.com

punlogic.com

plugcoin.org

clouping.com

DNS History

13 records (9 active, 4 former)

●NSabby.ns.cloudflare.com2026-03-05 → 2026-04-12 · 3 obs

○ 2017-06-02 14:04:16
● 2026-03-05 18:10:22
● 2026-04-12 16:30:04

○NSns1.sedoparking.com2015-11-02 → 2016-04-22 · 4 obs

● 2015-11-02 10:37:36
● 2016-04-22 05:23:34
○ 2017-06-02 14:04:16
○ 2026-04-12 16:30:04

○NSns2.sedoparking.com2015-11-02 → 2016-04-22 · 4 obs

● 2015-11-02 10:37:36
● 2016-04-22 05:23:34
○ 2017-06-02 14:04:16
○ 2026-04-12 16:30:04

●NSrajeev.ns.cloudflare.com2026-03-05 → 2026-04-12 · 3 obs

○ 2017-06-02 14:04:16
● 2026-03-05 18:10:22
● 2026-04-12 16:30:04

○MXmail.nickstel.com2015-11-02 → 2016-04-22 · 4 obs

● 2015-11-02 10:37:36
● 2016-04-22 05:23:34
○ 2017-06-02 14:04:16
○ 2026-04-12 16:30:04

●MXmx4.emailowl.com2026-03-05 → 2026-04-12 · 3 obs

○ 2017-06-02 14:04:16
● 2026-03-05 18:10:22
● 2026-04-12 16:30:04

●MXmx5.emailowl.com2026-03-05 → 2026-04-12 · 3 obs

○ 2017-06-02 14:04:16
● 2026-03-05 18:10:22
● 2026-04-12 16:30:04

●MXmx6.emailowl.com2026-03-05 → 2026-04-12 · 3 obs

○ 2017-06-02 14:04:16
● 2026-03-05 18:10:22
● 2026-04-12 16:30:04

●A104.21.51.2042026-03-05 → 2026-04-12 · 3 obs

○ 2017-06-02 14:04:16
● 2026-03-05 18:10:22
● 2026-04-12 16:30:04

●A172.67.185.2232026-03-05 → 2026-04-12 · 3 obs

○ 2017-06-02 14:04:16
● 2026-03-05 18:10:22
● 2026-04-12 16:30:04

●A2606:4700:3030::ac43:b9df2026-03-05 → 2026-04-12 · 3 obs

○ 2017-06-02 14:04:16
● 2026-03-05 18:10:22
● 2026-04-12 16:30:04

●A2606:4700:3036::6815:33cc2026-03-05 → 2026-04-12 · 3 obs

○ 2017-06-02 14:04:16
● 2026-03-05 18:10:22
● 2026-04-12 16:30:04

○A72.52.4.912015-11-02 → 2016-04-22 · 4 obs

● 2015-11-02 10:37:36
● 2016-04-22 05:23:34
○ 2017-06-02 14:04:16
○ 2026-04-12 16:30:04

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
biz	a.gtld.biz, b.gtld.biz, c.gtld.biz, m.gtld.biz...	-
coupling.biz	rajeev.ns.cloudflare.com, abby.ns.cloudflare.com	-

✅ Authoritative Response

Server:173.245.58.100

NS records: rajeev.ns.cloudflare.com, abby.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for coupling.biz (unsigned zone)

⏱️ Timing

Total: 669ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.185.223, 104.21.51.204`
AAAA	2	`2606:4700:3030::ac43:b9df, 2606:4700:3036::6815:33cc`
NS	2	`abby.ns.cloudflare.com, rajeev.ns.cloudflare.com`
MX	3	`mx4.emailowl.com (pri: 10), mx5.emailowl.com (pri: 10)...`
TXT	1	`v=spf1 a mx -all`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`abby.ns.cloudflare.com dns.cloudflare.co`

Analysis

IP Addresses

coupling.biz resolves to four IP numbers: 2606:4700:3030::ac43:b9df, 2606:4700:3036::6815:33cc, 104.21.51.204 and 172.67.185.223.

Other host names such as gerel.fr, debaowang.com, ayudaroot.com, akmohtashami.ir and brasserielepichet.com share IPs with coupling.biz.

Name Servers

coupling.biz is delegated to two name servers: abby.ns.cloudflare.com and rajeev.ns.cloudflare.com.

coupling.biz shares the same name server setup as chain-tensioners.com, nmcouplings.com, machined-plastic.com, kingstrans.com and pto-shaft.com.

coupling.biz at least partially shares name servers with other domains, for instance zmartdeals.com, ceravepediatrics.com, joga18.com, ganharnawebhoje21.online and colorsmithco.ca.

These name servers are commonly used together with sreeni.ns.cloudflare.com, lloyd.ns.cloudflare.com and dawn.ns.cloudflare.com.

Host names with six IP numbers:

abby.ns.cloudflare.com points to 2606:4700:50::adf5:3a64, 2803:f800:50::6ca2:c064, 2a06:98c1:50::ac40:2064, 108.162.192.100, 172.64.32.100 and 173.245.58.100.

rajeev.ns.cloudflare.com points to 2606:4700:58::adf5:3be0, 2803:f800:50::6ca2:c1e0, 2a06:98c1:50::ac40:21e0, 108.162.193.224, 172.64.33.224 and 173.245.59.224.

Mail Servers

Three mail servers handle coupling.biz: mx4.emailowl.com, mx5.emailowl.com and mx6.emailowl.com.

coupling.biz shares at least partially some mail servers with other domains, including el-oraby.com, mealstash.com, be-root.com, stolas.co and homedataco.com.

Host names with a single IP:

mx4.emailowl.com points to: 207.246.121.203.

mx5.emailowl.com points to: 45.63.17.188.

mx6.emailowl.com points to: 107.191.41.169.

coupling.biz - robtex.com

coupling.biz

biz

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

Mail Servers

`coupling.biz`

`biz`