isbu.org - robtex.com
isbu.org
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns-1063.awsdns-04.org ⚠️ Not in zone NS records | ||||||
| A | 2600:9000:5304:2700::1🇺🇸 Amazon2600:9000:5304::/48 - CloudFront | ||||||
| PTR | ns-1063.awsdns-04.org | ||||||
| A | 205.251.196.39🇺🇸 Amazon205.251.196.0/24 prefix | ||||||
| PTR | ns-1063.awsdns-04.org | ||||||
| NS | ns-1810.awsdns-34.co.uk ⚠️ Not in zone NS records | ||||||
| A | 2600:9000:5307:1200::1🇺🇸 Amazon2600:9000:5307::/48 - CloudFront | ||||||
| PTR | ns-1810.awsdns-34.co.uk | ||||||
| A | 205.251.199.18🇺🇸 Amazon205.251.199.0/24 prefix | ||||||
| PTR | ns-1810.awsdns-34.co.uk | ||||||
| NS | ns-198.awsdns-24.com ⚠️ Not in zone NS records | ||||||
| A | 2600:9000:5300:c600::1🇺🇸 Amazon2600:9000:5300::/48 - CloudFront | ||||||
| PTR | ns-198.awsdns-24.com | ||||||
| A | 205.251.192.198🇺🇸 Amazon205.251.192.0/24 prefix | ||||||
| PTR | ns-198.awsdns-24.com | ||||||
| NS | ns-990.awsdns-59.net ⚠️ Not in zone NS records | ||||||
| A | 2600:9000:5303:de00::1🇺🇸 Amazon2600:9000:5303::/48 - CloudFront | ||||||
| PTR | ns-990.awsdns-59.net | ||||||
| A | 205.251.195.222🇺🇸 Amazon205.251.195.0/24 prefix | ||||||
| PTR | ns-990.awsdns-59.net | ||||||
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=1782769800 | ||||||
Same first word
Similar names
DNS History
6 records (4 active, 2 former)
●NSns-1063.awsdns-04.org2015-07-23 → 2026-06-29 · 2 obs
● 2026-06-29 22:05:50
●NSns-1810.awsdns-34.co.uk2015-07-23 → 2026-06-29 · 2 obs
● 2026-06-29 22:05:50
●NSns-198.awsdns-24.com2015-07-23 → 2026-06-29 · 2 obs
● 2026-06-29 22:05:50
●NSns-990.awsdns-59.net2015-07-23 → 2026-06-29 · 2 obs
● 2026-06-29 22:05:50
○MXmail.modstudio.eu2015-07-23 → 2020-11-23 · 4 obs
● 2020-11-23 08:57:36
○ 2026-05-18 07:32:08
○ 2026-06-29 22:05:50
○A91.121.136.1712015-07-23 → 2020-11-23 · 4 obs
● 2020-11-23 08:57:36
○ 2026-05-18 07:32:08
○ 2026-06-29 22:05:50
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org | - |
| isbu.org | ns-1810.awsdns-34.co.uk, ns-990.awsdns-59.net, ns-198.awsdns-24.com, ns-1063.awsdns-04.org | 2 records |
✅ Authoritative Response
Server:205.251.195.222
NS records: ns-1810.awsdns-34.co.uk, ns-990.awsdns-59.net, ns-198.awsdns-24.com, ns-1063.awsdns-04.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for isbu.org (unsigned zone)
⏱️ Timing
Total: 664ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns-1063.awsdns-04.org, ns-1063.awsdns-04.org)
Analysis
Name Servers
Four name servers handle the delegation for isbu.org: ns-198.awsdns-24.com, ns-990.awsdns-59.net, ns-1063.awsdns-04.org and ns-1810.awsdns-34.co.uk.
isbu.org has at least partial name server overlap with other domains, such as popcorn.theater, 38audee.jp, altarix.com and two others.
It is common to see these name servers used together with name servers ns-1896.awsdns-45.co.uk and ns-680.awsdns-21.net.
ns-198.awsdns-24.com, ns-990.awsdns-59.net, ns-1063.awsdns-04.org and ns-1810.awsdns-34.co.uk all point to exactly two IP numbers each: ns-198.awsdns-24.com → 205.251.192.198 and 2600:9000:5300:c600::1; ns-990.awsdns-59.net → 205.251.195.222 and 2600:9000:5303:de00::1; ns-1063.awsdns-04.org → 205.251.196.39 and 2600:9000:5304:2700::1; ns-1810.awsdns-34.co.uk → 205.251.199.18 and 2600:9000:5307:1200::1.