`java4u.ch`

DNSSEC	⚠️ Not signed
A	80.74.147.33^{🇨🇭 ASN-METANET80.74.144.0/20 METANET AG, Switzerland}
		PTR	`amphora.sui-inter.net`
NS	`ns1.amphora.sui-inter.net` ⭐
		A	2a00:1128:1:1::147:33^{🇨🇭 ASN-METANET2a00:1128::/32 METANET AG, Switzerland IPv6 Allocation}
			PTR	`amphora.sui-inter.net`
		A	80.74.147.33^{🇨🇭 ASN-METANET80.74.144.0/20 METANET AG, Switzerland}
			PTR	`amphora.sui-inter.net`
NS	`ns2.amphora.sui-inter.net`
		A	2a00:1128:0:201:2::112^{🇨🇭 ASN-METANET2a00:1128::/32 METANET AG, Switzerland IPv6 Allocation}
		A	46.231.201.112^{🇨🇭 ASN-METANET46.231.200.0/21 METANET AG, Switzerland}
MX	`mail.java4u.ch` ⭐
		A	80.74.147.33^{🇨🇭 ASN-METANET80.74.144.0/20 METANET AG, Switzerland}
			PTR	`amphora.sui-inter.net`
TXT	`v=spf1 include:_spf.sui-inter.net +mx +a ~all`
SOA	`ns1.amphora.sui-inter.net`daniel\@sterchi.moonsoft.ch 2025-11-01 #36

`ch`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.nic.ch` ⭐
	NS	`b.nic.ch`
	NS	`d.nic.ch`
	NS	`e.nic.ch`
	NS	`f.nic.ch`
	SOA	`a.nic.ch`dns-operation@switch.ch 2026-05-10 #17

Subdomains

mail.java4u.ch

Same first word

java4u.com

java4u.ch

DNS History

6 records (4 active, 2 former)

○NSns.ch-inter.net2015-08-06 → 2018-09-11 · 4 obs

● 2015-08-06 03:51:56
● 2018-09-11 18:52:52
○ 2026-04-03 06:40:14
○ 2026-05-10 06:50:26

●NSns1.amphora.sui-inter.net2026-04-03 → 2026-05-10 · 3 obs

○ 2018-09-11 18:52:52
● 2026-04-03 06:40:14
● 2026-05-10 06:50:26

●NSns2.amphora.sui-inter.net2026-04-03 → 2026-05-10 · 3 obs

○ 2018-09-11 18:52:52
● 2026-04-03 06:40:14
● 2026-05-10 06:50:26

○NSns2.ch-inter.net2015-08-06 → 2018-09-11 · 4 obs

● 2015-08-06 03:51:56
● 2018-09-11 18:52:52
○ 2026-04-03 06:40:14
○ 2026-05-10 06:50:26

●MXmail.java4u.ch2015-08-06 → 2026-05-10 · 2 obs

● 2015-08-06 03:51:56
● 2026-05-10 06:50:26

●A80.74.147.332015-08-06 → 2026-05-10 · 2 obs

● 2015-08-06 03:51:56
● 2026-05-10 06:50:26

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
ch	b.nic.ch, e.nic.ch, a.nic.ch, d.nic.ch...	-
java4u.ch	ns2.amphora.sui-inter.net, ns1.amphora.sui-inter.net	-

✅ Authoritative Response

Server:46.231.201.112

NS records: ns2.amphora.sui-inter.net, ns1.amphora.sui-inter.net

🔒 DNSSEC Status

❌ Bogus (DNSSEC validation failed)

DS for java4u.ch does not match any DNSKEY

⏱️ Timing

Total: 1017ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`80.74.147.33`
NS	2	`ns1.amphora.sui-inter.net, ns2.amphora.sui-inter.net`
MX	1	`mail.java4u.ch (pri: 10)`
TXT	1	`v=spf1 include:_spf.sui-inter.net +mx +a`
SOA	1	`ns1.amphora.sui-inter.net daniel\.sterch`

Analysis

Hierarchy

java4u.ch is the parent of mail.java4u.ch.

IP Addresses

java4u.ch resolves to a single IP: 80.74.147.33.

Other host names, for instance openup.ru, planetcar.ch, mail.isc-engelberg.ch, mail.cad-jewelery.ch and mail.horsestore.ch share IP numbers with java4u.ch.

Name Servers

java4u.ch has two name servers: ns1.amphora.sui-inter.net and ns2.amphora.sui-inter.net.

java4u.ch shares the same name server setup as other domains, for example rompen.ch, i-sam.ch, beyer-chronometrie.com, viora.ch and dastoli.ch.

java4u.ch shares some name servers with other domains, for example mattiussi.ch, zahnarzt-(0x77616e6b)dorf.com, satwork.ch, justaddgasoline.com and bergfuehrer-engelberg.ch.

Host names with two IP numbers:

ns1.amphora.sui-inter.net points to: 2a00:1128:1:1::147:33 and 80.74.147.33; ns2.amphora.sui-inter.net points to: 2a00:1128:0:201:2::112 and 46.231.201.112.

Mail Servers

java4u.ch is handled by a single mail server, mail.java4u.ch.

Host name mail.java4u.ch points to IP 80.74.147.33.

java4u.ch - robtex.com

java4u.ch

ch