🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`learn.lib.de.us`

CNAME	`learn.koios.co`
DNSSEC	⚠️ Not signed
A	172.104.219.95^{🇺🇸 AKAMAI-LINODE-AP172.104.208.0/20 Akamai Technologies}
		PTR	`li1929-95.members.linode.com`
TXT	`google-site-verification=BWnQ7KYTsgnvZuMJ5R1xwqWSKSmdz1yWmlTi8KuIUtc`
TXT	`google-site-verification=SFMRRshw4pD8t5tWqaehWGqemuG1Jk0wX64AXMgN6Xc`

`lib.de.us`

	DNSSEC	🔒 Signed (DS record present)
	A	167.21.84.78^{🇺🇸 STATEOFDE167.21.0.0/17 State of Delaware}
	NS	`blue.foundationdns.com` ⭐
	NS	`blue.foundationdns.net`
	NS	`blue.foundationdns.org`
	MX	`lib-de-us.mail.protection.outlook.com` ⭐
	TXT	`MS=ms58655421`
	TXT	`V=spf1 ip4:167.21.96.12 ip4:20.7.123.152 include:spf.protection.outlook.com i...`
	TXT	`apple-domain-verification=VALLiwUS89JeJAll`
	TXT	`google-site-verification=LQshGdMxjMxnOEgKvNGTIMJu04o-mSNQogVFKFQG154`
	TXT	`google-site-verification=Y1meNzZgSqiUzZCq8E57iM-DaegK4yoPLJSw4-ewVSE`
	TXT	`s5S5z9zUaF+hfrAvWJ3VQv9uiOO6pWAxIZRiYtkWMN3GET+2rV3tC6unwRXjTrvYvzgFHiDRzzs44...`
	TXT	`zendeskverification.lib.de.us=821a4f908978a382`
	SOA	`blue.foundationdns.com`dns@cloudflare.com serial=2417498054

WOT: SAFE (89/100)
📈 Tranco rank: #687,812

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Previous names

Next names

DNS History

1 record (1 active, 0 former)

●CNAMElearn.koios.co2026-09-11 → 2026-10-18 · 2 obs

● 2026-09-11 13:11:10
● 2026-10-18 14:32:06

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
us	w.cctld.us, f.cctld.us, b.cctld.us, m.cctld.us...	15 records
lib.de.us	blue.foundationdns.com, blue.foundationdns.org, blue.foundationdns.net	-

✅ Authoritative Response

Server:162.159.60.1

NS records: blue.foundationdns.com, blue.foundationdns.org, blue.foundationdns.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

Root DNSKEY fetch failed: Error: connect EADDRNOTAVAIL 198.41.0.4:53 - Local (0.0.0.0:0)

⏱️ Timing

Total: 832ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`learn.koios.co`

📌 Glue Records Collected

Total: 15

In-bailiwick: 15 (b.cctld.us, f.cctld.us, k.cctld.us...)

Analysis

IP Addresses

learn.lib.de.us directs to one IP number, which is 172.104.219.95.

Other hosts including balance.koios.co, learn.koios.co and li1929-95.members.linode.com share IP addresses with learn.lib.de.us.

learn.lib.de.us - robtex.com

learn.lib.de.us

lib.de.us