rd-sys.com - dns.ninja

rd-sys.com

DNSSEC⚠️ Not signed
A81.19.145.52🇦🇹 IONOS-AS81.19.144.0/20 World4You.com
PTRwww32.world4you.com
NSns1.world4you.at ⭐
A2607:f1c0:fe:53:185:132:32:253🇺🇸 IONOS-ANYCAST2607:f1c0:fe::/47 AS8560 global anycast services (more specific) 1&1 IONOS Inc. 701 Lee Rd, Suite 300 Chesterbrook, PA 19087 US
PTRns1.world4you.at
A185.132.32.253🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS)
PTRns1.world4you.at
NSns2.world4you.at
A2001:8d8:fe:53:217:160:82:253🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific
PTRns2.world4you.at
A217.160.82.253🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific
PTRns2.world4you.at
MXmail.rd-sys.com ⭐
A81.19.149.66🇦🇹 IONOS-AS81.19.144.0/20 World4You.com
PTRmail18.world4you.com
TXTv=spf1 mx include:spf.w4ymail.at -all
SOAns1.world4you.athostmaster@world4you.com 2025-03-26 #2

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1781176878

Subdomains

mail.rd-sys.com

Same first word

rd-sys.com

DNS History

12 records (4 active, 8 former)

200920112013201520172019202120232025NSns1.world4you.atns2.world4you.atns1.mydyndns.orgns2.mydyndns.orgns3.mydyndns.orgns4.mydyndns.orgns5.mydyndns.orgMXmail.rd-sys.commx1.mailhop.orgmx2.mailhop.orgA81.19.145.5271.79.85.168
○NSns1.mydyndns.org2008-03-20 → 2008-03-20 · 3 obs
● 2008-03-20 06:38:18
○ 2015-11-12 20:18:20
○ 2026-06-11 11:32:16
●NSns1.world4you.at2026-02-23 → 2026-06-11 · 3 obs
○ 2015-11-12 20:18:20
● 2026-02-23 21:05:42
● 2026-06-11 11:32:16
○NSns2.mydyndns.org2008-03-20 → 2008-03-20 · 3 obs
● 2008-03-20 06:38:18
○ 2015-11-12 20:18:20
○ 2026-06-11 11:32:16
●NSns2.world4you.at2026-02-23 → 2026-06-11 · 3 obs
○ 2015-11-12 20:18:20
● 2026-02-23 21:05:42
● 2026-06-11 11:32:16
○NSns3.mydyndns.org2008-03-20 → 2008-03-20 · 3 obs
● 2008-03-20 06:38:18
○ 2015-11-12 20:18:20
○ 2026-06-11 11:32:16
○NSns4.mydyndns.org2008-03-20 → 2008-03-20 · 3 obs
● 2008-03-20 06:38:18
○ 2015-11-12 20:18:20
○ 2026-06-11 11:32:16
○NSns5.mydyndns.org2008-03-20 → 2008-03-20 · 3 obs
● 2008-03-20 06:38:18
○ 2015-11-12 20:18:20
○ 2026-06-11 11:32:16
●MXmail.rd-sys.com2026-02-23 → 2026-06-11 · 3 obs
○ 2015-11-12 20:18:20
● 2026-02-23 21:05:42
● 2026-06-11 11:32:16
○MXmx1.mailhop.org2008-03-20 → 2008-03-20 · 3 obs
● 2008-03-20 06:38:18
○ 2015-11-12 20:18:20
○ 2026-06-11 11:32:16
○MXmx2.mailhop.org2008-03-20 → 2008-03-20 · 3 obs
● 2008-03-20 06:38:18
○ 2015-11-12 20:18:20
○ 2026-06-11 11:32:16
○A71.79.85.1682008-03-20 → 2008-03-20 · 3 obs
● 2008-03-20 06:38:18
○ 2015-11-12 20:18:20
○ 2026-06-11 11:32:16
●A81.19.145.522026-02-23 → 2026-06-11 · 3 obs
○ 2015-11-12 20:18:20
● 2026-02-23 21:05:42
● 2026-06-11 11:32:16

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
rd-sys.comns1.world4you.at, ns2.world4you.at-

✅ Authoritative Response

Server:217.160.82.253

NS records: ns1.world4you.at, ns2.world4you.at

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for rd-sys.com (unsigned zone)

⏱️ Timing

Total: 417ms | Queries: -

📄 Records

TypeCountSample Data
A181.19.145.52
NS2ns2.world4you.at, ns1.world4you.at
MX1mail.rd-sys.com (pri: 10)
TXT1v=spf1 mx include:spf.w4ymail.at -all
SOA1ns1.world4you.at hostmaster.world4you.co

Analysis

Hierarchy

rd-sys.com is a parent domain of mail.rd-sys.com.

IP Addresses

rd-sys.com has exactly one IP address — 81.19.145.52.

bornemisza.at, siebott.com, www.dinna.at plus two other host names have IP numbers in common with rd-sys.com.

Name Servers

rd-sys.com has two authoritative name servers — ns1.world4you.at and ns2.world4you.at.

The name server configuration of rd-sys.com is shared with other domains, for instance likestarter.com, gaertnerei-angerer.at, pasching.net and two others.

Both ns1.world4you.at and ns2.world4you.at have two IP addresses each. ns1.world4you.at resolves to 185.132.32.253 and 2607:f1c0:fe:53:185:132:32:253; ns2.world4you.at resolves to 217.160.82.253 and 2001:8d8:fe:53:217:160:82:253.

Mail Servers

rd-sys.com uses one mail server — mail.rd-sys.com.

mail.rd-sys.com points to one IP number — 81.19.149.66.