`opencal.co`

DNSSEC	⚠️ Not signed
A	44.227.65.245^{🇺🇸 Amazon44.224.0.0/11 EC2 PDX prefix}
		PTR	`ec2-44-227-65-245.us-west-2.compute.amazonaws.com`
A	44.227.76.166^{🇺🇸 Amazon44.224.0.0/11 EC2 PDX prefix}
NS	`curitiba.ns.porkbun.com` ⭐
		A	2400:cb00:2049:1::adf5:3a25^{🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street}
		A	173.245.58.37^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`fortaleza.ns.porkbun.com`
		A	2400:cb00:2049:1::a29f:88c^{🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street}
		A	162.159.8.140^{Cloudflare162.159.8.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`maceio.ns.porkbun.com`
		A	2400:cb00:2049:1::a29f:bb4^{🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street}
		A	162.159.11.180^{Cloudflare162.159.11.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`salvador.ns.porkbun.com`
		A	2400:cb00:2049:1::a29f:a96^{🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street}
		A	162.159.10.150^{Cloudflare162.159.10.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
SOA	`curitiba.ns.porkbun.com`dns@cloudflare.com serial=2396504859

`co`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns0.centralnic.net` ⭐
	NS	`a.registrydns.co`
	NS	`b.registrydns.co`
	NS	`c.registrydns.co`
	NS	`d.registrydns.co`
	SOA	`ns0.centralnic.net`hostmaster@centralnic.net serial=1759621116

Same first word

opencal.co

opencal.com

opencal.cloud

opencal.org

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DNS History

23 records (6 active, 17 former)

●NScuritiba.ns.porkbun.com2026-03-27 → 2026-03-29 · 3 obs

○ 2020-02-22 03:12:44
● 2026-03-27 23:14:30
● 2026-03-29 13:47:06

○NSdns1.registrar-servers.com2015-07-18 → 2016-07-09 · 6 obs

● 2015-07-18 02:43:50
● 2015-11-16 12:44:36
○ 2016-02-11 01:52:04
● 2016-07-09 18:44:14
○ 2017-02-17 00:45:32
○ 2026-03-29 13:47:06

○NSdns1.registrar-servers.com,2016-02-11 → 2016-07-09 · 5 obs

○ 2015-11-16 12:44:36
● 2016-02-11 01:52:04
● 2016-07-09 18:44:14
○ 2017-02-17 00:45:32
○ 2026-03-29 13:47:06

○NSdns2.registrar-servers.com2015-07-18 → 2016-07-09 · 4 obs

● 2015-07-18 02:43:50
● 2016-07-09 18:44:14
○ 2017-02-17 00:45:32
○ 2026-03-29 13:47:06

○NSdns3.registrar-servers.com2015-07-18 → 2016-07-09 · 4 obs

● 2015-07-18 02:43:50
● 2016-07-09 18:44:14
○ 2017-02-17 00:45:32
○ 2026-03-29 13:47:06

○NSdns4.registrar-servers.com2015-07-18 → 2016-07-09 · 4 obs

● 2015-07-18 02:43:50
● 2016-07-09 18:44:14
○ 2017-02-17 00:45:32
○ 2026-03-29 13:47:06

○NSdns5.registrar-servers.com2015-07-18 → 2016-07-09 · 4 obs

● 2015-07-18 02:43:50
● 2016-07-09 18:44:14
○ 2017-02-17 00:45:32
○ 2026-03-29 13:47:06

●NSfortaleza.ns.porkbun.com2026-03-27 → 2026-03-29 · 3 obs

○ 2020-02-22 03:12:44
● 2026-03-27 23:14:30
● 2026-03-29 13:47:06

●NSmaceio.ns.porkbun.com2026-03-27 → 2026-03-29 · 3 obs

○ 2020-02-22 03:12:44
● 2026-03-27 23:14:30
● 2026-03-29 13:47:06

○NSns49.domaincontrol.com2020-02-22 → 2020-02-22 · 4 obs

○ 2017-02-17 00:45:32
● 2020-02-22 03:12:44
○ 2026-03-27 23:14:30
○ 2026-03-29 13:47:06

○NSns50.domaincontrol.com2020-02-22 → 2020-02-22 · 4 obs

○ 2017-02-17 00:45:32
● 2020-02-22 03:12:44
○ 2026-03-27 23:14:30
○ 2026-03-29 13:47:06

●NSsalvador.ns.porkbun.com2026-03-27 → 2026-03-29 · 3 obs

○ 2020-02-22 03:12:44
● 2026-03-27 23:14:30
● 2026-03-29 13:47:06

○MXeforward1.registrar-servers.com2015-07-18 → 2016-07-09 · 4 obs

● 2015-07-18 02:43:50
● 2016-07-09 18:44:14
○ 2017-02-17 00:45:32
○ 2026-03-29 13:47:06

○MXeforward2.registrar-servers.com2015-07-18 → 2016-07-09 · 4 obs

● 2015-07-18 02:43:50
● 2016-07-09 18:44:14
○ 2017-02-17 00:45:32
○ 2026-03-29 13:47:06

○MXeforward3.registrar-servers.com2015-07-18 → 2016-07-09 · 4 obs

● 2015-07-18 02:43:50
● 2016-07-09 18:44:14
○ 2017-02-17 00:45:32
○ 2026-03-29 13:47:06

○MXeforward4.registrar-servers.com2015-07-18 → 2016-07-09 · 4 obs

● 2015-07-18 02:43:50
● 2016-07-09 18:44:14
○ 2017-02-17 00:45:32
○ 2026-03-29 13:47:06

○MXeforward5.registrar-servers.com2015-07-18 → 2016-07-09 · 4 obs

● 2015-07-18 02:43:50
● 2016-07-09 18:44:14
○ 2017-02-17 00:45:32
○ 2026-03-29 13:47:06

○MXmail.opencal.co2020-02-22 → 2020-02-22 · 4 obs

○ 2017-02-17 00:45:32
● 2020-02-22 03:12:44
○ 2026-03-27 23:14:30
○ 2026-03-29 13:47:06

○A107.180.47.122020-02-22 → 2020-02-22 · 4 obs

○ 2017-02-17 00:45:32
● 2020-02-22 03:12:44
○ 2026-03-27 23:14:30
○ 2026-03-29 13:47:06

○A192.64.119.1342015-07-18 → 2015-11-16 · 4 obs

● 2015-07-18 02:43:50
● 2015-11-16 12:44:36
○ 2016-02-11 01:52:04
○ 2026-03-29 13:47:06

○A192.64.119.1872016-02-11 → 2016-07-09 · 5 obs

○ 2015-11-16 12:44:36
● 2016-02-11 01:52:04
● 2016-07-09 18:44:14
○ 2017-02-17 00:45:32
○ 2026-03-29 13:47:06

●A44.227.65.2452026-03-27 → 2026-03-29 · 3 obs

○ 2020-02-22 03:12:44
● 2026-03-27 23:14:30
● 2026-03-29 13:47:06

●A44.227.76.1662026-03-27 → 2026-03-29 · 3 obs

○ 2020-02-22 03:12:44
● 2026-03-27 23:14:30
● 2026-03-29 13:47:06

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
co	a.registrydns.co, b.registrydns.co, c.registrydns.co, d.registrydns.co	-
opencal.co	maceio.ns.porkbun.com, curitiba.ns.porkbun.com, salvador.ns.porkbun.com, fortaleza.ns.porkbun.com	-

✅ Authoritative Response

Server:162.159.11.180

NS records: maceio.ns.porkbun.com, curitiba.ns.porkbun.com, salvador.ns.porkbun.com, fortaleza.ns.porkbun.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for opencal.co (unsigned zone)

⏱️ Timing

Total: 438ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`44.227.65.245, 44.227.76.166`
NS	4	`curitiba.ns.porkbun.com, fortaleza.ns.porkbun.com...`
SOA	1	`curitiba.ns.porkbun.com dns.cloudflare.c`

Analysis

IP Addresses

opencal.co points to two IP numbers: 44.227.65.245 and 44.227.76.166.

Other host names, for instance ukrai.net, 1700.io, porkbunwpstation.cloud, blh.me and bigindian.org share IP numbers with opencal.co.

Name Servers

opencal.co is delegated to four name servers: curitiba.ns.porkbun.com, fortaleza.ns.porkbun.com, maceio.ns.porkbun.com and salvador.ns.porkbun.com.

opencal.co at least partially shares name servers with other domains, for instance vertlux.com, obrania.com, cpl.co.in, admates.com and commonstudies.com.

Host names with two IP numbers:

curitiba.ns.porkbun.com points to: 2400:cb00:2049:1::adf5:3a25 and 173.245.58.37.

fortaleza.ns.porkbun.com points to: 2400:cb00:2049:1::a29f:88c and 162.159.8.140.

maceio.ns.porkbun.com points to: 2400:cb00:2049:1::a29f:bb4 and 162.159.11.180.

salvador.ns.porkbun.com points to: 2400:cb00:2049:1::a29f:a96 and 162.159.10.150.

opencal.co - robtex.com

opencal.co

co

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

`opencal.co`

`co`