teachingtools.dev - dns.ninja

🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`teachingtools.dev`

DNSSEC	⚠️ Not signed
A	2600:1f18:16e:df01::258^{🇺🇸 Amazon2600:1f18::/35 AMAZON EC2 IAD prefix}
A	2600:1f18:16e:df01::259^{🇺🇸 Amazon2600:1f18::/35 AMAZON EC2 IAD prefix}
A	18.208.88.157^{🇺🇸 Amazon18.208.0.0/13 EC2 IAD prefix}
A	98.84.224.111^{🇺🇸 Amazon98.80.0.0/13 EC2 IAD 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}
MX	`mail.protonmail.ch` ⭐
		A	176.119.200.128^{🇨🇭 Proton176.119.200.0/24}
			PTR	`mail.protonmail.ch`
		A	185.70.42.128^{🇨🇭 Proton185.70.42.0/24}
			PTR	`mail.protonmail.ch`
		A	185.205.70.128^{🇫🇷 Proton185.205.70.0/24}
			PTR	`mail.protonmail.ch`
MX	`mailsec.protonmail.ch`⁽²⁰⁾
		A	176.119.200.129^{🇨🇭 Proton176.119.200.0/24}
			PTR	`mailsec.protonmail.ch`
		A	185.70.42.129^{🇨🇭 Proton185.70.42.0/24}
			PTR	`mailsec.protonmail.ch`
		A	185.205.70.129^{🇫🇷 Proton185.205.70.0/24}
			PTR	`mailsec.protonmail.ch`
TXT	`protonmail-verification=cb9a41e592014e83b67724a838809ede60048ed5`
TXT	`v=spf1 include:_spf.protonmail.ch ~all`
HTTPS	HTTP/2
SOA	`curitiba.ns.porkbun.com`dns@cloudflare.com serial=2415055000

`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

Similar names

Previous names

Next names

DNS History

14 records (10 active, 4 former)

●NScuritiba.ns.porkbun.com2026-08-25 → 2026-10-02 · 2 obs

● 2026-08-25 05:15:14
● 2026-10-02 01:13:10

●NSfortaleza.ns.porkbun.com2026-08-25 → 2026-10-02 · 2 obs

● 2026-08-25 05:15:14
● 2026-10-02 01:13:10

●NSmaceio.ns.porkbun.com2026-08-25 → 2026-10-02 · 2 obs

● 2026-08-25 05:15:14
● 2026-10-02 01:13:10

●NSsalvador.ns.porkbun.com2026-08-25 → 2026-10-02 · 2 obs

● 2026-08-25 05:15:14
● 2026-10-02 01:13:10

●MXmail.protonmail.ch2026-08-25 → 2026-10-02 · 2 obs

● 2026-08-25 05:15:14
● 2026-10-02 01:13:10

●MXmailsec.protonmail.ch2026-08-25 → 2026-10-02 · 2 obs

● 2026-08-25 05:15:14
● 2026-10-02 01:13:10

●A18.208.88.1572026-08-25 → 2026-10-02 · 3 obs

○ 2026-08-25 05:15:14
● 2026-08-25 23:48:30
● 2026-10-02 01:13:10

●A2600:1f18:16e:df01::2582026-08-25 → 2026-10-02 · 3 obs

○ 2026-08-25 05:15:14
● 2026-08-25 23:48:30
● 2026-10-02 01:13:10

●A2600:1f18:16e:df01::2592026-08-25 → 2026-10-02 · 3 obs

○ 2026-08-25 05:15:14
● 2026-08-25 23:48:30
● 2026-10-02 01:13:10

○A2a05:d014:58f:6200::2582026-08-25 → 2026-08-25 · 3 obs

● 2026-08-25 05:15:14
○ 2026-08-25 23:48:30
○ 2026-10-02 01:13:10

○A2a05:d014:58f:6200::2592026-08-25 → 2026-08-25 · 3 obs

● 2026-08-25 05:15:14
○ 2026-08-25 23:48:30
○ 2026-10-02 01:13:10

○A35.157.26.1352026-08-25 → 2026-08-25 · 3 obs

● 2026-08-25 05:15:14
○ 2026-08-25 23:48:30
○ 2026-10-02 01:13:10

○A63.176.8.2182026-08-25 → 2026-08-25 · 3 obs

● 2026-08-25 05:15:14
○ 2026-08-25 23:48:30
○ 2026-10-02 01:13:10

●A98.84.224.1112026-08-25 → 2026-10-02 · 3 obs

○ 2026-08-25 05:15:14
● 2026-08-25 23:48:30
● 2026-10-02 01:13:10

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
dev	ns-tld1.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com...	-
teachingtools.dev	fortaleza.ns.porkbun.com, maceio.ns.porkbun.com, salvador.ns.porkbun.com, curitiba.ns.porkbun.com	-

✅ Authoritative Response

Server:162.159.10.150

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for teachingtools.dev (unsigned zone)

⏱️ Timing

Total: 371ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`98.84.224.111, 18.208.88.157`
AAAA	2	`2600:1f18:16e:df01::259, 2600:1f18:16e:df01::258`
NS	4	`curitiba.ns.porkbun.com, fortaleza.ns.porkbun.com...`
MX	2	`mail.protonmail.ch (pri: 10), mailsec.protonmail.ch (pri: 20)`
TXT	2	`protonmail-verification=cb9a41e592014e83, v=spf1 include:_spf.protonmail.ch ~all`
HTTPS	1	`{"priority":1,"target":".","alpn":["h2"]`
SOA	1	`curitiba.ns.porkbun.com dns.cloudflare.c`

Analysis

IP Addresses

teachingtools.dev has four IP addresses: 18.208.88.157, 98.84.224.111, 2600:1f18:16e:df01::258 and 2600:1f18:16e:df01::259.

esmotov.site, roanokemike.com, aga.coffee plus two other host names have IP numbers in common with teachingtools.dev.

Name Servers

Four name servers handle the delegation for teachingtools.dev: curitiba.ns.porkbun.com, fortaleza.ns.porkbun.com, maceio.ns.porkbun.com and salvador.ns.porkbun.com.

teachingtools.dev shares at least some of its name servers with other domains, including novelistpublishingpublishingbio.help, krisluck.gay, zarclub.app and two others.

The host names curitiba.ns.porkbun.com, fortaleza.ns.porkbun.com, maceio.ns.porkbun.com and salvador.ns.porkbun.com each resolve to two IP addresses: curitiba.ns.porkbun.com resolves to 173.245.58.37 and 2400:cb00:2049:1::adf5:3a25; fortaleza.ns.porkbun.com resolves to 162.159.8.140 and 2400:cb00:2049:1::a29f:88c; maceio.ns.porkbun.com resolves to 162.159.11.180 and 2400:cb00:2049:1::a29f:bb4; salvador.ns.porkbun.com resolves to 162.159.10.150 and 2400:cb00:2049:1::a29f:a96.

Mail Servers

teachingtools.dev uses two mail servers, mail.protonmail.ch and mailsec.protonmail.ch.

The mail server setup of teachingtools.dev matches that of other domains such as lathaminvesting.com, nekobakehouse.com, killtime.online and two others.

At least some of the mail servers used by teachingtools.dev are shared with other domains: eleonorefines.fr, letitriptcg.com, beamtarget.com and two others among them.

mail.protonmail.ch and mailsec.protonmail.ch each resolve to three IP addresses. mail.protonmail.ch resolves to 176.119.200.128, 185.70.42.128 and 185.205.70.128. mailsec.protonmail.ch resolves to 176.119.200.129, 185.70.42.129 and 185.205.70.129.