back-bone.org - dns.ninja
back-bone.org
| DNSSEC | ⚠️ Not signed | ||||||
| A | 81.19.145.43🇦🇹 IONOS-AS81.19.144.0/20 World4You.com | ||||||
| NS | ns1.world4you.at ⭐ | ||||||
| A | 2607: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 | ||||||
| PTR | ns1.world4you.at | ||||||
| A | 185.132.32.253🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS) | ||||||
| PTR | ns1.world4you.at | ||||||
| NS | ns2.world4you.at | ||||||
| A | 2001:8d8:fe:53:217:160:82:253🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific | ||||||
| PTR | ns2.world4you.at | ||||||
| A | 217.160.82.253🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific | ||||||
| PTR | ns2.world4you.at | ||||||
| MX | mail.back-bone.org ⭐ | ||||||
| A | 81.19.149.38🇦🇹 IONOS-AS81.19.144.0/20 World4You.com | ||||||
| PTR | mail17.world4you.com | ||||||
| TXT | v=spf1 mx include:spf.w4ymail.at -all | ||||||
| SOA | ns1.world4you.athostmaster@world4you.com 2025-03-17 #2 | ||||||
org
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.org.afilias-nst.info ⭐ ⚠️ Not in parent delegation | ||||||
| NS | a2.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | b0.org.afilias-nst.org | ||||||
| NS | b2.org.afilias-nst.org | ||||||
| NS | c0.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | d0.org.afilias-nst.org | ||||||
| SOA | a0.org.afilias-nst.infohostmaster@donuts.email serial=1785857640 | ||||||
Subdomains
mail.back-bone.org |
Same first word
DNS History
5 records (4 active, 1 former)
●NSns1.world4you.at2015-07-09 → 2026-08-04 · 2 obs
● 2026-08-04 16:06:32
●NSns2.world4you.at2015-07-09 → 2026-08-04 · 2 obs
● 2026-08-04 16:06:32
○MXmail.back-bone.at2015-07-09 → 2015-11-22 · 4 obs
● 2015-11-22 18:56:42
○ 2016-02-25 19:50:16
○ 2026-08-04 16:06:32
●MXmail.back-bone.org2015-07-09 → 2026-08-04 · 2 obs
● 2026-08-04 16:06:32
●A81.19.145.432015-07-09 → 2026-08-04 · 2 obs
● 2026-08-04 16:06:32
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | b2.org.afilias-nst.org, d0.org.afilias-nst.org, b0.org.afilias-nst.org | - |
| back-bone.org | ns2.world4you.at, ns1.world4you.at | - |
✅ Authoritative Response
Server:185.132.32.253
NS records: ns2.world4you.at, ns1.world4you.at
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for back-bone.org (unsigned zone)
⏱️ Timing
Total: 753ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 81.19.145.43 |
| NS | 2 | ns1.world4you.at, ns2.world4you.at |
| MX | 1 | mail.back-bone.org (pri: 10) |
| TXT | 1 | v=spf1 mx include:spf.w4ymail.at -all |
| SOA | 1 | ns1.world4you.at hostmaster.world4you.co |
Analysis
Hierarchy
The domain mail.back-bone.org falls under the parent back-bone.org.
IP Addresses
back-bone.org directs to one IP number, which is 81.19.145.43.
Among the host names that share IP numbers with back-bone.org are wienguide.info, www.tbw.at, cultus.at and two others.
Name Servers
The NS records for back-bone.org delegate to ns1.world4you.at and ns2.world4you.at.
back-bone.org has the same name server delegation as a number of other domains, such as m4uc.at, krinninger.at, tubeclear.eu and two more.
ns1.world4you.at resolves to 185.132.32.253 and 2607:f1c0:fe:53:185:132:32:253. Likewise, ns2.world4you.at resolves to 217.160.82.253 and 2001:8d8:fe:53:217:160:82:253 — two IP addresses apiece.
Mail Servers
back-bone.org routes its mail through a single mail server, mail.back-bone.org.
mail.back-bone.org resolves to 81.19.149.38 and no other IP number.