🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`core4development.com`

DNSSEC	⚠️ Not signed
A	107.180.20.84^{🇺🇸 AS400754107.180.0.0/18 IAD2 Allocation}
		PTR	`84.20.180.107.host.secureserver.net`
NS	`dns1.p08.nsone.net` ⭐ ⚠️ Not in zone NS records
		A	2620:4d:4000:6259:7:8:0:1^{🇺🇸 NSONE2620:4d:4000::/48 PNAP-ACS nsone-1}
			PTR	`ns8.demysdns.com`
			PTR	`dns1.p08.nsone.net`
		A	198.51.44.8^{🇺🇸 NSONE198.51.44.0/24}
			PTR	`ns8.demysdns.com`
			PTR	`dns1.p08.nsone.net`
NS	`dns1.p01.nsone.net` ⚠️ Not in parent delegation
		A	2620:4d:4000:6259:7:1:0:1^{🇺🇸 NSONE2620:4d:4000::/48 PNAP-ACS nsone-1}
			PTR	`dns1.p01.nsone.net`
		A	198.51.44.1^{🇺🇸 NSONE198.51.44.0/24}
			PTR	`dns1.p01.nsone.net`
NS	`dns2.p01.nsone.net` ⚠️ Not in parent delegation
		A	2a00:edc0:6259:7:1::2^{🇺🇸 NSONE2a00:edc0:6259::/48 NS1-2}
			PTR	`dns2.p01.nsone.net`
		A	198.51.45.1^{🇺🇸 NSONE198.51.45.0/24}
			PTR	`dns2.p01.nsone.net`
NS	`dns2.p08.nsone.net` ⚠️ Not in zone NS records
		A	2a00:edc0:6259:7:8::2^{🇺🇸 NSONE2a00:edc0:6259::/48 NS1-2}
			PTR	`dns2.p08.nsone.net`
		A	198.51.45.8^{🇺🇸 NSONE198.51.45.0/24}
			PTR	`dns2.p08.nsone.net`
NS	`dns3.p01.nsone.net` ⚠️ Not in parent delegation
		A	2620:4d:4000:6259:7:1:0:3^{🇺🇸 NSONE2620:4d:4000::/48 PNAP-ACS nsone-1}
			PTR	`dns3.p01.nsone.net`
		A	198.51.44.65^{🇺🇸 NSONE198.51.44.0/24}
			PTR	`dns3.p01.nsone.net`
NS	`dns3.p08.nsone.net` ⚠️ Not in zone NS records
		A	2620:4d:4000:6259:7:8:0:3^{🇺🇸 NSONE2620:4d:4000::/48 PNAP-ACS nsone-1}
			PTR	`dns3.p08.nsone.net`
		A	198.51.44.72^{🇺🇸 NSONE198.51.44.0/24}
			PTR	`dns3.p08.nsone.net`
NS	`dns4.p01.nsone.net` ⚠️ Not in parent delegation
		A	2a00:edc0:6259:7:1::4^{🇺🇸 NSONE2a00:edc0:6259::/48 NS1-2}
			PTR	`dns4.p01.nsone.net`
		A	198.51.45.65^{🇺🇸 NSONE198.51.45.0/24}
			PTR	`dns4.p01.nsone.net`
NS	`dns4.p08.nsone.net` ⚠️ Not in zone NS records
		A	2a00:edc0:6259:7:8::4^{🇺🇸 NSONE2a00:edc0:6259::/48 NS1-2}
			PTR	`dns4.p08.nsone.net`
		A	198.51.45.72^{🇺🇸 NSONE198.51.45.0/24}
			PTR	`dns4.p08.nsone.net`
NS	`ns01.squarespacedns.com` ⚠️ Not in parent delegation
		A	45.54.22.1^{🇺🇸 NETACTUATE45.54.22.0/24}
			PTR	`ns01.squarespacedns.com`
NS	`ns02.squarespacedns.com` ⚠️ Not in parent delegation
		A	45.54.22.65^{🇺🇸 NETACTUATE45.54.22.0/24}
			PTR	`ns02.squarespacedns.com`
NS	`ns03.squarespacedns.com` ⚠️ Not in parent delegation
		A	45.54.22.129^{🇺🇸 NETACTUATE45.54.22.0/24}
			PTR	`ns03.squarespacedns.com`
NS	`ns04.squarespacedns.com` ⚠️ Not in parent delegation
		A	45.54.22.193^{🇺🇸 NETACTUATE45.54.22.0/24}
			PTR	`ns04.squarespacedns.com`
SOA	`dns1.p08.nsone.net`hostmaster@nsone.net serial=1524425080

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1793903296

Same first word

core4development.com

Previous names

Next names

core4disciples.com

core4dlink.com

core4domains.com

core4ebusiness.com

core4ed.com

core4element.com

core4elements.com

core4engineering.com

DNS History

13 records (13 active, 0 former)

●NSdns1.p01.nsone.net2026-11-05 → 2026-11-05 · 3 obs

○ 2020-01-08 20:41:56
● 2026-11-05 16:34:54
● 2026-11-05 18:37:22

●NSdns1.p08.nsone.net2020-01-08 → 2026-11-05 · 2 obs

● 2020-01-08 20:41:56
● 2026-11-05 18:37:22

●NSdns2.p01.nsone.net2026-11-05 → 2026-11-05 · 3 obs

○ 2020-01-08 20:41:56
● 2026-11-05 16:34:54
● 2026-11-05 18:37:22

●NSdns2.p08.nsone.net2020-01-08 → 2026-11-05 · 2 obs

● 2020-01-08 20:41:56
● 2026-11-05 18:37:22

●NSdns3.p01.nsone.net2026-11-05 → 2026-11-05 · 3 obs

○ 2020-01-08 20:41:56
● 2026-11-05 16:34:54
● 2026-11-05 18:37:22

●NSdns3.p08.nsone.net2020-01-08 → 2026-11-05 · 2 obs

● 2020-01-08 20:41:56
● 2026-11-05 18:37:22

●NSdns4.p01.nsone.net2026-11-05 → 2026-11-05 · 3 obs

○ 2020-01-08 20:41:56
● 2026-11-05 16:34:54
● 2026-11-05 18:37:22

●NSdns4.p08.nsone.net2020-01-08 → 2026-11-05 · 2 obs

● 2020-01-08 20:41:56
● 2026-11-05 18:37:22

●NSns01.squarespacedns.com2020-01-08 → 2026-11-05 · 2 obs

● 2020-01-08 20:41:56
● 2026-11-05 18:37:22

●NSns02.squarespacedns.com2020-01-08 → 2026-11-05 · 2 obs

● 2020-01-08 20:41:56
● 2026-11-05 18:37:22

●NSns03.squarespacedns.com2020-01-08 → 2026-11-05 · 2 obs

● 2020-01-08 20:41:56
● 2026-11-05 18:37:22

●NSns04.squarespacedns.com2020-01-08 → 2026-11-05 · 2 obs

● 2020-01-08 20:41:56
● 2026-11-05 18:37:22

●A107.180.20.842020-01-08 → 2026-11-05 · 2 obs

● 2020-01-08 20:41:56
● 2026-11-05 18:37:22

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	g.gtld-servers.net, h.gtld-servers.net, i.gtld-servers.net, j.gtld-servers.net...	-
core4development.com	dns1.p08.nsone.net, dns2.p08.nsone.net, dns3.p08.nsone.net, dns4.p08.nsone.net	-

✅ Authoritative Response

Server:198.51.44.8

NS records: dns1.p08.nsone.net, dns2.p08.nsone.net, dns3.p08.nsone.net, dns4.p08.nsone.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

Root DNSKEY fetch failed: Error: connect EADDRNOTAVAIL 198.41.0.4:53 - Local (0.0.0.0:0)

⏱️ Timing

Total: 181ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`107.180.20.84`
NS	8	`dns1.p01.nsone.net, dns2.p01.nsone.net...`
SOA	1	`dns1.p08.nsone.net hostmaster.nsone.net`

Analysis

IP Addresses

core4development.com resolves to just one IP address, 107.180.20.84.

Two other host names, along with brutalcop.com, mail.benmichelson.com and cofesa.mx, also share IP numbers with core4development.com.

Name Servers

core4development.com is served by 12 authoritative name servers — among them ns01.squarespacedns.com, ns02.squarespacedns.com, ns03.squarespacedns.com and 9 others.

core4development.com partially shares its NS delegation with several other domains, including oldgirlclub.com, simmersproperty.com, wieder-in-kontakt.com and two others.

In DNS configurations, these name servers often share authority with ns04.squarespacedns.com, dns1.p01.nsone.net, dns2.p01.nsone.net and 7 other name servers.

Host names that have two IP addresses:

dns1.p01.nsone.net resolves to two addresses: 198.51.44.1 and 2620:4d:4000:6259:7:1:0:1.

dns2.p01.nsone.net resolves to two addresses: 198.51.45.1 and 2a00:edc0:6259:7:1::2.

dns3.p01.nsone.net resolves to two addresses: 198.51.44.65 and 2620:4d:4000:6259:7:1:0:3.

dns4.p01.nsone.net resolves to two addresses: 198.51.45.65 and 2a00:edc0:6259:7:1::4.

dns1.p08.nsone.net resolves to two addresses: 198.51.44.8 and 2620:4d:4000:6259:7:8:0:1.

dns2.p08.nsone.net resolves to two addresses: 198.51.45.8 and 2a00:edc0:6259:7:8::2.

dns3.p08.nsone.net resolves to two addresses: 198.51.44.72 and 2620:4d:4000:6259:7:8:0:3.

dns4.p08.nsone.net resolves to two addresses: 198.51.45.72 and 2a00:edc0:6259:7:8::4.

Host names that point to one IP address:

The hostname ns01.squarespacedns.com resolves to 45.54.22.1.

The hostname ns02.squarespacedns.com resolves to 45.54.22.65.