mathlib-changelog.org - robtex.com
mathlib-changelog.org
| DNSSEC | ⚠️ Not signed | ||||||
| A | 76.76.21.21🇺🇸 Amazon76.76.21.0/24 EC2 Prefix | ||||||
| NS | ns-331.awsdns-41.com ⭐ | ||||||
| A | 2600:9000:5301:4b00::1🇺🇸 Amazon2600:9000:5301::/48 - CloudFront | ||||||
| PTR | ns-331.awsdns-41.com | ||||||
| A | 205.251.193.75🇺🇸 Amazon205.251.193.0/24 prefix | ||||||
| PTR | ns-331.awsdns-41.com | ||||||
| NS | ns-1437.awsdns-51.org | ||||||
| A | 2600:9000:5305:9d00::1🇺🇸 Amazon2600:9000:5305::/48 - CloudFront | ||||||
| PTR | ns-1437.awsdns-51.org | ||||||
| A | 205.251.197.157🇺🇸 Amazon205.251.197.0/24 prefix | ||||||
| PTR | ns-1437.awsdns-51.org | ||||||
| NS | ns-1729.awsdns-24.co.uk | ||||||
| A | 2600:9000:5306:c100::1🇺🇸 Amazon2600:9000:5306::/48 - CloudFront | ||||||
| PTR | ns-1729.awsdns-24.co.uk | ||||||
| A | 205.251.198.193🇺🇸 Amazon205.251.198.0/24 prefix | ||||||
| PTR | ns-1729.awsdns-24.co.uk | ||||||
| NS | ns-516.awsdns-00.net | ||||||
| A | 2600:9000:5302:400::1🇺🇸 Amazon2600:9000:5302::/48 - CloudFront | ||||||
| PTR | ns-516.awsdns-00.net | ||||||
| A | 205.251.194.4🇺🇸 Amazon205.251.194.0/24 prefix | ||||||
| PTR | ns-516.awsdns-00.net | ||||||
| TXT | google-site-verification=kkO_CZ7njyfMMIrdHrhir3i7KxiaRO4b5yu5ZuRUMxY | ||||||
| SOA | ns-331.awsdns-41.comawsdns-hostmaster@amazon.com serial=1 | ||||||
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=1776141812 | ||||||
Same first word
mathlib-changelog.org |
DNS History
5 records (5 active, 0 former)
●NSns-1437.awsdns-51.org2026-03-30 → 2026-04-14 · 2 obs
● 2026-04-14 05:05:04
●NSns-1729.awsdns-24.co.uk2026-03-30 → 2026-04-14 · 2 obs
● 2026-04-14 05:05:04
●NSns-331.awsdns-41.com2026-03-30 → 2026-04-14 · 2 obs
● 2026-04-14 05:05:04
●NSns-516.awsdns-00.net2026-03-30 → 2026-04-14 · 2 obs
● 2026-04-14 05:05:04
●A76.76.21.212026-03-30 → 2026-04-14 · 2 obs
● 2026-04-14 05:05:04
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | d0.org.afilias-nst.org, b2.org.afilias-nst.org, b0.org.afilias-nst.org | - |
| mathlib-changelog.org | ns-331.awsdns-41.com, ns-516.awsdns-00.net, ns-1437.awsdns-51.org, ns-1729.awsdns-24.co.uk | 1 record |
✅ Authoritative Response
Server:205.251.198.193
NS records: ns-331.awsdns-41.com, ns-516.awsdns-00.net, ns-1437.awsdns-51.org, ns-1729.awsdns-24.co.uk
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for mathlib-changelog.org (unsigned zone)
⏱️ Timing
Total: 403ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 76.76.21.21 |
| NS | 4 | ns-1437.awsdns-51.org, ns-1729.awsdns-24.co.uk... |
| TXT | 1 | google-site-verification=kkO_CZ7njyfMMIr |
| SOA | 1 | ns-331.awsdns-41.com awsdns-hostmaster.a |
📌 Glue Records Collected
Total: 1
Out-of-bailiwick: 1 (ns-1437.awsdns-51.org)
Analysis
IP Addresses
mathlib-changelog.org resolves to a single IP: 76.76.21.21.
Other host names, for instance interchange.com, optiwiseit.com, tapassess.co.uk, findmecreators.com and birchbox.com share IP numbers with mathlib-changelog.org.
Name Servers
mathlib-changelog.org is delegated to four name servers: ns-331.awsdns-41.com, ns-516.awsdns-00.net, ns-1437.awsdns-51.org and ns-1729.awsdns-24.co.uk.
mathlib-changelog.org shares some name servers with other domains, for example jp0.signalfx.com, d3tt7chrqmlo6o.cloudfront.net, d15ts10hq780q5.cloudfront.net, medpagetoday.co.uk and allenamericans.com.
Host names with two IP numbers
Two IPs per host:
ns-331.awsdns-41.com points to 2600:9000:5301:4b00::1 and 205.251.193.75
ns-516.awsdns-00.net points to 2600:9000:5302:400::1 and 205.251.194.4
ns-1437.awsdns-51.org points to 2600:9000:5305:9d00::1 and 205.251.197.157
ns-1729.awsdns-24.co.uk points to 2600:9000:5306:c100::1 and 205.251.198.193