spec.engineering - dns.ninja

`spec.engineering`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::6815:3879^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3031::ac43:96d6^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.56.121^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.150.214^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`luke.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3bc8^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`luke.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1c8^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`luke.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21c8^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`luke.ns.cloudflare.com`
		A	108.162.193.200^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`luke.ns.cloudflare.com`
		A	172.64.33.200^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`luke.ns.cloudflare.com`
		A	173.245.59.200^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`luke.ns.cloudflare.com`
NS	`vera.ns.cloudflare.com`
		A	2606:4700:50::adf5:3a93^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`vera.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c093^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`vera.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2093^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`vera.ns.cloudflare.com`
		A	108.162.192.147^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`vera.ns.cloudflare.com`
		A	172.64.32.147^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`vera.ns.cloudflare.com`
		A	173.245.58.147^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`vera.ns.cloudflare.com`
MX	`spec-engineering.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:c902::^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-sj2pr05cu00300.inbound.protection.outlook.com`
		A	2a01:111:f403:c927::^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-bn6pr21cu00500.inbound.protection.outlook.com`
		A	2a01:111:f403:c946::2^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-ch4pr04cu00102.inbound.protection.outlook.com`
		A	2a01:111:f403:f910::^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-cy5pr03cu00300.inbound.protection.outlook.com`
		A	52.101.9.21^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-bl2pr04cu00205.inbound.protection.outlook.com`
		A	52.101.9.26^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-bl0pr02cu00702.inbound.protection.outlook.com`
		A	52.101.11.3^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sn1pr0501cu00103.inbound.protection.outlook.com`
		A	52.101.11.15^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sa9pr02cu00207.inbound.protection.outlook.com`
TXT	`MS=ms34551375`
TXT	`MS=ms52849414`
TXT	`apple-domain-verification=uFumL9lYNXUeKcYC`
TXT	`atlassian-domain-verification=NkLyuo953iRYgvUohvvaUnt0I618ufwYYmzcIjFUDFIZg/5...`
TXT	`v=spf1 ip4:50.247.142.109 include:spf.protection.outlook.com include:spf.emai...`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.56.121, 172.67.150.214
		IPv6 hints	2606:4700:3031::6815:3879, 2606:4700:3031::ac43:96d6
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=52, name=cloudflare-ech.com
SOA	`luke.ns.cloudflare.com`dns@cloudflare.com serial=2406738911

`engineering`

	DNSSEC	🔒 Signed (DS record present)
	NS	`v0n0.nic.engineering` ⭐
	NS	`v0n1.nic.engineering`
	NS	`v0n2.nic.engineering`
	NS	`v0n3.nic.engineering`
	NS	`v2n0.nic.engineering`
	NS	`v2n1.nic.engineering`
	SOA	`v0n0.nic.engineering`hostmaster@donuts.email serial=1781695945

Same first word

spec.co.th

spec.solutions

spec.name

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spec.org.sg

spec.uz

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epcs.be

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espc.biz

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epsc.re

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ceps.edu.ba

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cpse.info

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escp.pw

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DNS History

13 records (7 active, 6 former)

●NSluke.ns.cloudflare.com2026-02-20 → 2026-06-17 · 3 obs

○ 2016-12-10 19:02:28
● 2026-02-20 03:21:08
● 2026-06-17 12:00:30

○NSns1.bluehost.com2016-12-10 → 2016-12-10 · 3 obs

● 2016-12-10 19:02:28
○ 2026-02-20 03:21:08
○ 2026-06-17 12:00:30

○NSns2.bluehost.com2016-12-10 → 2016-12-10 · 3 obs

● 2016-12-10 19:02:28
○ 2026-02-20 03:21:08
○ 2026-06-17 12:00:30

●NSvera.ns.cloudflare.com2026-02-20 → 2026-06-17 · 3 obs

○ 2016-12-10 19:02:28
● 2026-02-20 03:21:08
● 2026-06-17 12:00:30

○MXfallbackmx.spamexperts.eu2016-12-10 → 2016-12-10 · 3 obs

● 2016-12-10 19:02:28
○ 2026-02-20 03:21:08
○ 2026-06-17 12:00:30

○MXlastmx.spamexperts.net2016-12-10 → 2016-12-10 · 3 obs

● 2016-12-10 19:02:28
○ 2026-02-20 03:21:08
○ 2026-06-17 12:00:30

○MXmx.spamexperts.com2016-12-10 → 2016-12-10 · 3 obs

● 2016-12-10 19:02:28
○ 2026-02-20 03:21:08
○ 2026-06-17 12:00:30

●MXspec-engineering.mail.protection.outlook.com2026-02-20 → 2026-06-17 · 3 obs

○ 2016-12-10 19:02:28
● 2026-02-20 03:21:08
● 2026-06-17 12:00:30

●A104.21.56.1212026-02-20 → 2026-06-17 · 3 obs

○ 2016-12-10 19:02:28
● 2026-02-20 03:21:08
● 2026-06-17 12:00:30

●A172.67.150.2142026-02-20 → 2026-06-17 · 3 obs

○ 2016-12-10 19:02:28
● 2026-02-20 03:21:08
● 2026-06-17 12:00:30

●A2606:4700:3031::6815:38792026-02-20 → 2026-06-17 · 3 obs

○ 2016-12-10 19:02:28
● 2026-02-20 03:21:08
● 2026-06-17 12:00:30

●A2606:4700:3031::ac43:96d62026-02-20 → 2026-06-17 · 3 obs

○ 2016-12-10 19:02:28
● 2026-02-20 03:21:08
● 2026-06-17 12:00:30

○A50.87.249.1102016-12-10 → 2016-12-10 · 3 obs

● 2016-12-10 19:02:28
○ 2026-02-20 03:21:08
○ 2026-06-17 12:00:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
engineering	v0n0.nic.engineering, v0n1.nic.engineering, v0n2.nic.engineering, v0n3.nic.engineering...	12 records
spec.engineering	luke.ns.cloudflare.com, vera.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.193.200

NS records: luke.ns.cloudflare.com, vera.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for spec.engineering (unsigned zone)

⏱️ Timing

Total: 386ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.150.214, 104.21.56.121`
AAAA	2	`2606:4700:3031::ac43:96d6, 2606:4700:3031::6815:3879`
NS	2	`luke.ns.cloudflare.com, vera.ns.cloudflare.com`
MX	1	`spec-engineering.mail.protection.outlook`
TXT	5	`MS=ms34551375, MS=ms52849414...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`luke.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

In-bailiwick: 12 (v0n0.nic.engineering, v0n1.nic.engineering, v0n2.nic.engineering...)

Analysis

IP Addresses

spec.engineering resolves to four IP addresses: 104.21.56.121, 172.67.150.214, 2606:4700:3031::6815:3879 and 2606:4700:3031::ac43:96d6.

fwdq.com.cn, rainbowflsh.net, institut-de-beaute-strasbourg.com plus two other host names have IP numbers in common with spec.engineering.

Name Servers

Two name servers handle the delegation for spec.engineering: luke.ns.cloudflare.com and vera.ns.cloudflare.com.

The name server configuration of spec.engineering is shared with other domains, for instance qqzjw.com, familyvillagegame.com, petonline.com.hk and two others.

spec.engineering has at least partial name server overlap with other domains, such as simpleinfo.cc, koenigslinie.de, cosmicair.com.bd and two others.

It is common to see these name servers used together with name servers nick.ns.cloudflare.com and heather.ns.cloudflare.com.

Hosts with 6 IP addresses each:

luke.ns.cloudflare.com resolves to 108.162.193.200, 172.64.33.200 and 173.245.59.200 among others, with 3 other IP addresses in total.

vera.ns.cloudflare.com resolves to 108.162.192.147, 172.64.32.147 and 173.245.58.147 among others, with 3 other IP addresses in total.

Mail Servers

spec.engineering uses one mail server — spec-engineering.mail.protection.outlook.com.

spec-engineering.mail.protection.outlook.com has 8 IP addresses: 52.101.9.21, 52.101.9.26, 52.101.11.3 plus 5 more.