🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`osullivan.dev`

DNSSEC	⚠️ Not signed
NS	`bill.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b4a^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bill.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c14a^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`bill.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:214a^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`bill.ns.cloudflare.com`
		A	108.162.193.74^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bill.ns.cloudflare.com`
		A	172.64.33.74^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bill.ns.cloudflare.com`
		A	173.245.59.74^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bill.ns.cloudflare.com`
NS	`treasure.ns.cloudflare.com`
		A	2606:4700:50::a29f:2674^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`treasure.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c274^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`treasure.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2274^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`treasure.ns.cloudflare.com`
		A	108.162.194.116^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`treasure.ns.cloudflare.com`
		A	162.159.38.116^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`treasure.ns.cloudflare.com`
		A	172.64.34.116^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`treasure.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c19::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bk-in-f26.1e100.net`
		A	64.233.180.27^{🇺🇸 Google64.233.180.0/24}
			PTR	`on-in-f27.1e100.net`
			PTR	`pe-in-f27.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c14::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	192.178.234.26^{🇺🇸 Google192.178.0.0/15}
			PTR	`ncsclj-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1a^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f26.1e100.net`
		A	172.253.116.26^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f26.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4009:c0f::1b^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f27.1e100.net`
		A	192.178.223.27^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f27.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:400c:c23::1b^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f27.1e100.net`
		A	172.253.157.26^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f26.1e100.net`
TXT	`v=spf1 include:_spf.google.com ~all`
SOA	`bill.ns.cloudflare.com`dns@cloudflare.com serial=2411756287

`dev`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns-tld1.charlestonroadregistry.com` ⭐
	NS	`ns-tld2.charlestonroadregistry.com`
	NS	`ns-tld3.charlestonroadregistry.com`
	NS	`ns-tld4.charlestonroadregistry.com`
	NS	`ns-tld5.charlestonroadregistry.com`
	SOA	`ns-tld1.charlestonroadregistry.com`cloud-dns-hostmaster@google.com serial=1

🔒 HSTS Preload (+subdomains)

Same first word

osullivan.dev

osullivan.co

osullivan.ch

osullivan.dk

osullivan.network

osullivan.it

osullivan.ru

osullivan.works

osullivan.co.nz

osullivan.pro

osullivan.com.au

osullivan.edu

osullivan.ie

osullivan.eu

osullivan.one

osullivan.com

osullivan.org.au

osullivan.net.au

osullivan.co.za

osullivan.fr

osullivan.group

osullivan.email

osullivan.tc

osullivan.ca

osullivan.es

osullivan.website

osullivan.design

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Previous names

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DNS History

7 records (7 active, 0 former)

●NSbill.ns.cloudflare.com2026-08-19 → 2026-08-24 · 2 obs

● 2026-08-19 12:13:02
● 2026-08-24 03:09:50

●NStreasure.ns.cloudflare.com2026-08-19 → 2026-08-24 · 2 obs

● 2026-08-19 12:13:02
● 2026-08-24 03:09:50

●MXalt1.aspmx.l.google.com2026-08-19 → 2026-08-24 · 2 obs

● 2026-08-19 12:13:02
● 2026-08-24 03:09:50

●MXalt2.aspmx.l.google.com2026-08-19 → 2026-08-24 · 2 obs

● 2026-08-19 12:13:02
● 2026-08-24 03:09:50

●MXalt3.aspmx.l.google.com2026-08-19 → 2026-08-24 · 2 obs

● 2026-08-19 12:13:02
● 2026-08-24 03:09:50

●MXalt4.aspmx.l.google.com2026-08-19 → 2026-08-24 · 2 obs

● 2026-08-19 12:13:02
● 2026-08-24 03:09:50

●MXaspmx.l.google.com2026-08-19 → 2026-08-24 · 2 obs

● 2026-08-19 12:13:02
● 2026-08-24 03:09:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
dev	ns-tld2.charlestonroadregistry.com, ns-tld5.charlestonroadregistry.com, ns-tld1.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com...	-
osullivan.dev	treasure.ns.cloudflare.com, bill.ns.cloudflare.com	-

✅ Authoritative Response

Server:173.245.59.74

NS records: treasure.ns.cloudflare.com, bill.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for osullivan.dev (unsigned zone)

⏱️ Timing

Total: 1850ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`bill.ns.cloudflare.com, treasure.ns.cloudflare.com`
MX	5	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
TXT	1	`v=spf1 include:_spf.google.com ~all`
SOA	1	`bill.ns.cloudflare.com dns.cloudflare.co`

Analysis

Name Servers

DNS delegation for osullivan.dev points to two name servers: bill.ns.cloudflare.com and treasure.ns.cloudflare.com.

The name server configuration of osullivan.dev is shared with other domains, for instance ggyyws.com, inewya.com, pacific-spin-ca.ca and two others.

osullivan.dev shares at least some of its name servers with other domains, including vcsync.app, sharpcourts.org, tubestyle.in and two others.

These name servers are frequently seen alongside the name servers titan.ns.cloudflare.com, mike.ns.cloudflare.com, gracie.ns.cloudflare.com and love.ns.cloudflare.com.

Hosts with 6 IP addresses each:

bill.ns.cloudflare.com has IP addresses 108.162.193.74, 172.64.33.74 and 173.245.59.74, plus 3 other.

treasure.ns.cloudflare.com has IP addresses 108.162.194.116, 162.159.38.116 and 172.64.34.116, plus 3 other.

Mail Servers

Mail for osullivan.dev is handled by five mail servers, namely aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

At least some of the mail servers used by osullivan.dev are shared with other domains: voyage-albanie.com, darkmum.com, weddingfavorsoutlet.com and two others among them.

These mail servers are often deployed together with alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and 3 other mail servers.

Host names pointing to two IP addresses:

aspmx.l.google.com has two IP addresses: 64.233.180.27 and 2607:f8b0:4004:c19::1a.

alt1.aspmx.l.google.com has two IP addresses: 192.178.234.26 and 2800:3f0:4003:c14::1a.

alt2.aspmx.l.google.com has two IP addresses: 172.253.116.26 and 2a00:1450:400b:c02::1a.

alt3.aspmx.l.google.com has two IP addresses: 192.178.223.27 and 2a00:1450:4009:c0f::1b.

alt4.aspmx.l.google.com has two IP addresses: 172.253.157.26 and 2a00:1450:400c:c23::1b.