`lb.as4u.org`

DNSSEC	⚠️ Not signed
A	2a01:28:ca:72::100:195^{🇨🇿 SuperNetwork2a01:28::/32 s.r.o.}
		PTR	`lba.as4u.org`
A	88.86.100.195^{🇨🇿 SuperNetwork88.86.96.0/19 s.r.o.}

`as4u.org`

	DNSSEC	⚠️ Not signed
	A	2a01:28:ca:72::100:195^{🇨🇿 SuperNetwork2a01:28::/32 s.r.o.}
	A	88.86.100.195^{🇨🇿 SuperNetwork88.86.96.0/19 s.r.o.}
	NS	`ns.as4u.org` ⭐
	NS	`ns.as4u.cz`
	NS	`ns.district9.cz`
	MX	`mx1.as4u.org` ⭐
	MX	`mx2.as4u.org`⁽¹⁰⁾
	TXT	`google-site-verification=iY5smOkRtqbtBcjVImivHp9wfkPAoN3FnQDgdF6FvZU`
	TXT	`v=spf1 include:_spf.as4u.org ~all`
	SOA	`ns.as4u.org`hostmaster@as4u.org 2026-02-26 #0

📈 Tranco rank: #579,912

Same first word

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lb.s3.amazonaws.com

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lb.shopware.store

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DNS History

2 records (2 active, 0 former)

●A2a01:28:ca:72::100:1952026-02-22 → 2026-04-27 · 3 obs

○ 2016-12-11 16:40:38
● 2026-02-22 13:04:56
● 2026-04-27 02:50:18

●A88.86.100.1952016-12-11 → 2026-04-27 · 2 obs

● 2016-12-11 16:40:38
● 2026-04-27 02:50:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org	-
as4u.org	ns.district9.cz, ns.as4u.cz, ns.as4u.org	1 record

✅ Authoritative Response

Server:88.86.100.200

NS records: ns.district9.cz, ns.as4u.cz, ns.as4u.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for as4u.org (unsigned zone)

⏱️ Timing

Total: 856ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`88.86.100.195`
AAAA	1	`2a01:28:ca:72::100:195`

📌 Glue Records Collected

Total: 1

In-bailiwick: 1 (ns.as4u.org)

Analysis

IP Addresses

lb.as4u.org points to two IP numbers: 2a01:28:ca:72::100:195 and 88.86.100.195.

Other host names, for instance novi.cz, liberecky-kraj.cz, tyniste.cz, bohemian-paradise.info and sdruzenidrak.org share IP numbers with lb.as4u.org.

lb.as4u.org - robtex.com

lb.as4u.org

as4u.org