back.lu - dns.ninja

`back.lu`

DNSSEC	⚠️ Not signed
A	194.147.93.110^{🇱🇺 WHG-LUX194.147.93.0/24}
		PTR	`design202.letzebuerg.net`
NS	`ns1.letzebuerg.net` ⭐
		A	194.147.93.201^{🇱🇺 WHG-LUX194.147.93.0/24}
NS	`ns2.letzebuerg.net`
		A	194.147.93.202^{🇱🇺 WHG-LUX194.147.93.0/24}
MX	`back.lu` ⭐
		A	194.147.93.110^{🇱🇺 WHG-LUX194.147.93.0/24}
			PTR	`design202.letzebuerg.net`
TXT	`v=spf1 +a +mx +ip4:194.147.93.110 +ip4:194.147.93.119 +ip4:194.147.93.111 ~all`
SOA	`ns1.letzebuerg.net`alerts@zonat.com 2026-05-25 #1

`lu`

	DNSSEC	🔒 Signed (DS record present)
	NS	`1.ns.lu` ⭐
	NS	`g.dns.lu`
	NS	`i.dns.lu`
	NS	`j.dns.lu`
	NS	`k.dns.lu`
	NS	`p.dns.lu`
	NS	`r.ns.lu`
	TXT	`Exported: 2026-07-19 18:01:01`
	SOA	`1.ns.lu`noc@restena.lu serial=1784476872

MX for

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Same first word

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DNS History

6 records (4 active, 2 former)

●NSns1.letzebuerg.net2015-05-27 → 2026-07-19 · 2 obs

● 2015-05-27 18:03:04
● 2026-07-19 16:47:08

●NSns2.letzebuerg.net2015-05-27 → 2026-07-19 · 2 obs

● 2015-05-27 18:03:04
● 2026-07-19 16:47:08

●MXback.lu2015-05-27 → 2026-07-19 · 2 obs

● 2015-05-27 18:03:04
● 2026-07-19 16:47:08

●A194.147.93.1102026-02-22 → 2026-07-19 · 3 obs

○ 2017-07-27 10:49:34
● 2026-02-22 19:22:56
● 2026-07-19 16:47:08

○A78.46.255.1132015-05-27 → 2015-05-27 · 3 obs

● 2015-05-27 18:03:04
○ 2015-10-25 08:59:24
○ 2026-07-19 16:47:08

○A82.211.41.202015-10-25 → 2017-07-27 · 5 obs

○ 2015-05-27 18:03:04
● 2015-10-25 08:59:24
● 2017-07-27 10:49:34
○ 2026-02-22 19:22:56
○ 2026-07-19 16:47:08

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
lu	1.ns.lu, g.dns.lu, i.dns.lu, j.dns.lu...	-
back.lu	ns2.letzebuerg.net, ns1.letzebuerg.net	-

✅ Authoritative Response

Server:194.147.93.201

NS records: ns2.letzebuerg.net, ns1.letzebuerg.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for back.lu (unsigned zone)

⏱️ Timing

Total: 706ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`194.147.93.110`
NS	2	`ns2.letzebuerg.net, ns1.letzebuerg.net`
MX	1	`back.lu (pri: 0)`
TXT	1	`v=spf1 +a +mx +ip4:194.147.93.110 +ip4:1`
SOA	1	`ns1.letzebuerg.net alerts.zonat.com`

Analysis

Mail Server Role

The MX record for back.lu points back to back.lu — it is its own mail server.

IP Addresses

back.lu directs to one IP number, which is 194.147.93.110.

Among the host names that share IP numbers with back.lu are anarore.lu, ibf.lu, jjl.lu and two others.

Name Servers

Two name servers handle the delegation for back.lu: ns1.letzebuerg.net and ns2.letzebuerg.net.

back.lu has the same name server delegation as a number of other domains, such as filiti.lu, ecoledemusique.lu, finacorp.lu and two more.

At least some of back.lu's name servers are shared with other domains, for example maschke.co.at, woelfl-trans.at, woelfl-card.com and two more.

These name servers tend to co-occur with ns11.letzebuerg.net, ns12.letzebuerg.net, ns1.anarore.info and 7 other name servers in the same DNS delegations.

Each of ns1.letzebuerg.net and ns2.letzebuerg.net has one IP address: ns1.letzebuerg.net uses 194.147.93.201 and ns2.letzebuerg.net uses 194.147.93.202.

Mail Servers

The MX record for back.lu points to a single mail server: back.lu.

back.lu carries a single IP number, which is 194.147.93.110.