`api.free-courses.dev`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::ac43:c4bb^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::6815:2218^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.34.24^{Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.196.187^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.34.24, 172.67.196.187
		IPv6 hints	2606:4700:3031::ac43:c4bb, 2606:4700:3037::6815:2218
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=163, name=cloudflare-ech.com

`free-courses.dev`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::ac43:c4bb^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::6815:2218^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.34.24^{Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.196.187^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`maxim.ns.cloudflare.com` ⭐
NS	`nelci.ns.cloudflare.com`
MX	`route3.mx.cloudflare.net` ⭐
MX	`route2.mx.cloudflare.net`⁽⁷⁰⁾
MX	`route1.mx.cloudflare.net`⁽⁸²⁾
TXT	`v=spf1 include:_spf.mx.cloudflare.net ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.34.24, 172.67.196.187
		IPv6 hints	2606:4700:3031::ac43:c4bb, 2606:4700:3037::6815:2218
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=163, name=cloudflare-ech.com
SOA	`maxim.ns.cloudflare.com`dns@cloudflare.com serial=2398494018

Same first word

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api.today

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api.digital

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api.net.tw

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api.mango

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api.net.co

api.co.uk

api.cn

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api.financial

api.codes

api.house

api.tw

api.dev-myqnapcloud.com

api.network

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api.bet

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api.myqnapcloud.cn

api.co

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iap.edu.mx

ipa.su

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pai.net.pl

aip.jp

ipa.com.tr

pai.com.au

pai.tv

iap.edu.pe

ipa.cool

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iap.de

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pia.gov.ph

pai.ro

iap.be

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aip.app

pai.su

pia.se

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aip.fi

pai.mobi

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ipa.istanbul

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ipa.co.ve

ipa.org.ar

aip.co

DNS History

4 records (4 active, 0 former)

●A104.21.34.242026-04-01 → 2026-04-02 · 2 obs

● 2026-04-01 07:33:56
● 2026-04-02 23:08:04

●A172.67.196.1872026-04-01 → 2026-04-02 · 2 obs

● 2026-04-01 07:33:56
● 2026-04-02 23:08:04

●A2606:4700:3031::ac43:c4bb2026-04-01 → 2026-04-02 · 2 obs

● 2026-04-01 07:33:56
● 2026-04-02 23:08:04

●A2606:4700:3037::6815:22182026-04-01 → 2026-04-02 · 2 obs

● 2026-04-01 07:33:56
● 2026-04-02 23:08:04

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
dev	ns-tld1.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com...	10 records
free-courses.dev	nelci.ns.cloudflare.com, maxim.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.194.152

NS records: nelci.ns.cloudflare.com, maxim.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for free-courses.dev (unsigned zone)

⏱️ Timing

Total: 486ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.34.24, 172.67.196.187`
AAAA	2	`2606:4700:3037::6815:2218, 2606:4700:3031::ac43:c4bb`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`

📌 Glue Records Collected

Total: 10

Out-of-bailiwick: 10 (ns-tld1.charlestonroadregistry.com, ns-tld1.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com...)

Analysis

IP Addresses

api.free-courses.dev points to four IP numbers: 2606:4700:3031::ac43:c4bb, 2606:4700:3037::6815:2218, 104.21.34.24 and 172.67.196.187.

Other host names, for instance peekskillonhudson.com, www.jken.shop, ee.cgtueid.cn, remotestylist.com and www.fastfile.cc share IP numbers with api.free-courses.dev.

api.free-courses.dev - robtex.com