dau.edu - robtex.com
dau.edu
| DNSSEC | ⚠️ Not signed | ||||||
| A | 20.185.21.166🇺🇸 Microsoft20.184.0.0/13 MICROSOFT | ||||||
| NS | ns1.dau.edu ⭐ | ||||||
| A | 2400:cb00:2049:1::a29f:4ef🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street | ||||||
| A | 162.159.4.239Cloudflare162.159.4.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| NS | ns2.dau.edu | ||||||
| A | 2400:cb00:2049:1::a29f:5fb🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street | ||||||
| A | 162.159.5.251Cloudflare162.159.5.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| MX | mail1.dau.edu ⭐ | ||||||
| A | 50.229.6.58🇺🇸 COMCAST-IBONE50.128.0.0/9 Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mount Laurel, NJ 08054 | ||||||
| PTR | mail1.dau.edu | ||||||
| MX | mail2.dau.edu(20) | ||||||
| A | 50.229.6.158🇺🇸 COMCAST-IBONE50.128.0.0/9 Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mount Laurel, NJ 08054 | ||||||
| PTR | mail2.dau.edu | ||||||
| TXT | _pzrwe7ekz735kd85cppmzmkwukwtjp4 | ||||||
| TXT | extensis-domain-verification=b124ba7a-773e-4412-b0ed-9647ddc1f8cb | ||||||
| TXT | google-site-verification=Wi8UpWA1ZKbn1YMNqPpte2_3Z29Z5jqhFmZQLILDsos | ||||||
| TXT | v=spf1 mx ip4:50.229.6.50 ip4:50.222.2.0/24 ip4:50.229.6.0/24 ip4:149.96.193.... | ||||||
| SOA | ns1.dau.edudns@cloudflare.com serial=2399256819 | ||||||
edu
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.edu-servers.net ⭐ | ||||||
| NS | b.edu-servers.net | ||||||
| NS | c.edu-servers.net | ||||||
| NS | d.edu-servers.net | ||||||
| NS | e.edu-servers.net | ||||||
| NS | f.edu-servers.net | ||||||
| NS | g.edu-servers.net | ||||||
| NS | h.edu-servers.net | ||||||
| NS | i.edu-servers.net | ||||||
| NS | j.edu-servers.net | ||||||
| NS | k.edu-servers.net | ||||||
| NS | l.edu-servers.net | ||||||
| NS | m.edu-servers.net | ||||||
| SOA | a.edu-servers.netnstld@verisign-grs.com serial=1772435516 | ||||||
rank #1111 in the tld
📈 Tranco rank: #121,317
Subdomains
ns1.dau.edu |
dart.dau.edu |
mail1.dau.edu |
ns2.dau.edu |
id.dau.edu |
www.dau.edu |
saar.dau.edu |
aaf.dau.edu |
mail2.dau.edu |
Same first word
Similar names
DNS History
7 records (5 active, 2 former)
●NSns1.dau.edu2026-02-14 → 2026-03-19 · 3 obs
● 2026-02-14 17:06:32
● 2026-03-19 11:48:24
●NSns2.dau.edu2026-02-14 → 2026-03-19 · 3 obs
● 2026-02-14 17:06:32
● 2026-03-19 11:48:24
○NSns3.dau.edu2020-02-12 → 2021-06-24 · 4 obs
● 2021-06-24 15:06:02
○ 2026-02-14 17:06:32
○ 2026-03-19 11:48:24
○NSns4.dau.edu2020-02-12 → 2021-06-24 · 4 obs
● 2021-06-24 15:06:02
○ 2026-02-14 17:06:32
○ 2026-03-19 11:48:24
●MXmail1.dau.edu2020-02-12 → 2026-03-19 · 2 obs
● 2026-03-19 11:48:24
●MXmail2.dau.edu2020-02-12 → 2026-03-19 · 2 obs
● 2026-03-19 11:48:24
●A20.185.21.1662026-02-14 → 2026-03-19 · 2 obs
● 2026-03-19 11:48:24
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| edu | a.edu-servers.net, b.edu-servers.net, c.edu-servers.net, d.edu-servers.net... | - |
| dau.edu | ns1.dau.edu, ns2.dau.edu | 4 records |
✅ Authoritative Response
Server: 162.159.5.251
NS records: ns1.dau.edu, ns2.dau.edu
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 334ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 20.185.21.166 |
| NS | 2 | ns1.dau.edu, ns2.dau.edu |
| MX | 2 | mail1.dau.edu (pri: 10), mail2.dau.edu (pri: 20) |
| TXT | 4 | _pzrwe7ekz735kd85cppmzmkwukwtjp4, extensis-domain-verification=b124ba7a-77... |
| SOA | 1 | ns1.dau.edu dns.cloudflare.com |
📌 Glue Records Collected
Total: 4
In-bailiwick: 4 (ns1.dau.edu, ns1.dau.edu, ns2.dau.edu...)
Analysis
Hierarchy
dau.edu is the parent of ns1.dau.edu, dart.dau.edu, mail1.dau.edu, ns2.dau.edu, id.dau.edu and a few other host names.
IP Addresses
dau.edu resolves to one IP number: 20.185.21.166.
Other host names, for instance www.hci.mil, dau.edu.cdn.cloudflare.net, acqdemo.hci.mil and hci.mil share IP numbers with dau.edu.
Name Servers
dau.edu is delegated to two name servers ns1.dau.edu and ns2.dau.edu.
dau.edu uses the same name server configuration as other domains, such as 6.229.50.in-addr.arpa.
Host names with two IP numbers:
The host name ns1.dau.edu points to 2400:cb00:2049:1::a29f:4ef and 162.159.4.239; the host name ns2.dau.edu points to 2400:cb00:2049:1::a29f:5fb and 162.159.5.251.
Mail Servers
Two mail servers handle dau.edu: mail1.dau.edu and mail2.dau.edu.
dau.edu shares the same mail server setup as other domains, for instance dau.edu.cdn.cloudflare.net.
dau.edu shares some mail servers with other domains, at least partially, for example mail2.dau.edu and mail1.dau.edu.
Host names with one IP number:
mail1.dau.edu points to 50.229.6.58
mail2.dau.edu points to 50.229.6.158