🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`passbyreference.dev`

DNSSEC	⚠️ Not signed
A	2606:4700:3035::6815:485e^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:b3c7^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.72.94^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.179.199^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`alexia.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:26af^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alexia.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2af^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`alexia.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22af^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`alexia.ns.cloudflare.com`
		A	108.162.194.175^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alexia.ns.cloudflare.com`
		A	162.159.38.175^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alexia.ns.cloudflare.com`
		A	172.64.34.175^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alexia.ns.cloudflare.com`
NS	`gerardo.ns.cloudflare.com`
		A	2606:4700:58::a29f:2ce6^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gerardo.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3e6^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`gerardo.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23e6^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`gerardo.ns.cloudflare.com`
		A	108.162.195.230^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gerardo.ns.cloudflare.com`
		A	162.159.44.230^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gerardo.ns.cloudflare.com`
		A	172.64.35.230^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gerardo.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c23::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`yuiadrs-in-f27.1e100.net`
		A	172.253.139.26^{🇺🇸 Google172.253.139.0/24}
			PTR	`yuiadsk-in-f26.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c14::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	192.178.234.27^{🇺🇸 Google192.178.0.0/15}
			PTR	`ncsclj-in-f27.1e100.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::1a^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f26.1e100.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	172.253.157.27^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f27.1e100.net`
TXT	`v=spf1 include:_spf.google.com ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.72.94, 172.67.179.199
		IPv6 hints	2606:4700:3035::6815:485e, 2606:4700:3037::ac43:b3c7
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=125, name=cloudflare-ech.com
SOA	`alexia.ns.cloudflare.com`dns@cloudflare.com serial=2413366443

`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

passbyreference.com

passbyreference.dev

Previous names

Next names

DNS History

11 records (11 active, 0 former)

●NSalexia.ns.cloudflare.com2026-08-22 → 2026-09-19 · 2 obs

● 2026-08-22 22:51:18
● 2026-09-19 14:36:52

●NSgerardo.ns.cloudflare.com2026-08-22 → 2026-09-19 · 2 obs

● 2026-08-22 22:51:18
● 2026-09-19 14:36:52

●MXalt1.aspmx.l.google.com2026-08-22 → 2026-09-19 · 4 obs

● 2026-08-22 22:51:18
○ 2026-09-08 15:03:54
● 2026-09-09 13:23:38
● 2026-09-19 14:36:52

●MXalt2.aspmx.l.google.com2026-08-22 → 2026-09-19 · 4 obs

● 2026-08-22 22:51:18
○ 2026-09-08 15:03:54
● 2026-09-09 13:23:38
● 2026-09-19 14:36:52

●MXalt3.aspmx.l.google.com2026-08-22 → 2026-09-19 · 4 obs

● 2026-08-22 22:51:18
○ 2026-09-08 15:03:54
● 2026-09-09 13:23:38
● 2026-09-19 14:36:52

●MXalt4.aspmx.l.google.com2026-08-22 → 2026-09-19 · 4 obs

● 2026-08-22 22:51:18
○ 2026-09-08 15:03:54
● 2026-09-09 13:23:38
● 2026-09-19 14:36:52

●MXaspmx.l.google.com2026-08-22 → 2026-09-19 · 4 obs

● 2026-08-22 22:51:18
○ 2026-09-08 15:03:54
● 2026-09-09 13:23:38
● 2026-09-19 14:36:52

●A104.21.72.942026-08-22 → 2026-09-19 · 4 obs

● 2026-08-22 22:51:18
○ 2026-09-08 15:03:54
● 2026-09-09 13:23:38
● 2026-09-19 14:36:52

●A172.67.179.1992026-08-22 → 2026-09-19 · 4 obs

● 2026-08-22 22:51:18
○ 2026-09-08 15:03:54
● 2026-09-09 13:23:38
● 2026-09-19 14:36:52

●A2606:4700:3035::6815:485e2026-08-22 → 2026-09-19 · 4 obs

● 2026-08-22 22:51:18
○ 2026-09-08 15:03:54
● 2026-09-09 13:23:38
● 2026-09-19 14:36:52

●A2606:4700:3037::ac43:b3c72026-08-22 → 2026-09-19 · 4 obs

● 2026-08-22 22:51:18
○ 2026-09-08 15:03:54
● 2026-09-09 13:23:38
● 2026-09-19 14:36:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
dev	ns-tld3.charlestonroadregistry.com, ns-tld5.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com, ns-tld1.charlestonroadregistry.com...	10 records
passbyreference.dev	alexia.ns.cloudflare.com, gerardo.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.194.175

NS records: alexia.ns.cloudflare.com, gerardo.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for passbyreference.dev (unsigned zone)

⏱️ Timing

Total: 878ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.179.199, 104.21.72.94`
AAAA	2	`2606:4700:3037::ac43:b3c7, 2606:4700:3035::6815:485e`
NS	2	`alexia.ns.cloudflare.com, gerardo.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`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`alexia.ns.cloudflare.com dns.cloudflare.`

📌 Glue Records Collected

Total: 10

Out-of-bailiwick: 10 (ns-tld5.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com...)

Analysis

IP Addresses

passbyreference.dev has four IP addresses: 104.21.72.94, 172.67.179.199, 2606:4700:3035::6815:485e and 2606:4700:3037::ac43:b3c7.

5424cc0cb96e.saabrestoration.com, lifterstorelocator.com, wuuka.blog and two other host names share IP numbers with passbyreference.dev.

Name Servers

passbyreference.dev has two authoritative name servers — alexia.ns.cloudflare.com and gerardo.ns.cloudflare.com.

passbyreference.dev uses the same name servers as several other domains — among them ireviews.net, m9wda3lik.workers.dev, gandoo1381.workers.dev and two more.

passbyreference.dev shares at least some of its name servers with other domains, including funja1.shop, studiodeuxak.com, storb.lol and two others.

These name servers are frequently paired with the name servers teagan.ns.cloudflare.com and garret.ns.cloudflare.com.

Hostnames that resolve to 6 IP addresses:

alexia.ns.cloudflare.com points to 108.162.194.175, 162.159.38.175, 172.64.34.175 and 3 other IP addresses.

gerardo.ns.cloudflare.com points to 108.162.195.230, 162.159.44.230, 172.64.35.230 and 3 other IP addresses.

Mail Servers

Mail for passbyreference.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.

passbyreference.dev has at least partial mail server overlap with other domains such as hoperestoreswi.org, utopiawinds.com, greenvillagebali.com and two more.

The mail servers alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and aspmx3.googlemail.com are commonly seen alongside these mail servers.

Hostnames that resolve to two IP addresses:

aspmx.l.google.com resolves to 172.253.139.26 and 2607:f8b0:4004:c23::1b.

alt1.aspmx.l.google.com resolves to 192.178.234.27 and 2800:3f0:4003:c14::1a.

alt2.aspmx.l.google.com resolves to 172.253.116.26 and 2a00:1450:400b:c02::1a.

alt3.aspmx.l.google.com resolves to 192.178.223.27 and 2a00:1450:4009:c0f::1a.

alt4.aspmx.l.google.com resolves to 172.253.157.27 and 2a00:1450:400c:c23::1b.