res.ac - robtex.com
res.ac
ac
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.nic.ac ⭐ | ||||||
| NS | a2.nic.ac | ||||||
| NS | b0.nic.ac | ||||||
| NS | c0.nic.ac | ||||||
| SOA | a0.nic.achostmaster@donuts.email serial=1784055931 | ||||||
MX for
res.ac |
Same first word
Similar names
DNS History
12 records (12 active, 0 former)
●NSns-1175.awsdns-18.org2026-07-13 → 2026-07-14 · 2 obs
● 2026-07-14 19:32:50
●NSns-1977.awsdns-55.co.uk2026-07-13 → 2026-07-14 · 2 obs
● 2026-07-14 19:32:50
●NSns-207.awsdns-25.com2026-07-13 → 2026-07-14 · 2 obs
● 2026-07-14 19:32:50
●NSns-672.awsdns-20.net2026-07-13 → 2026-07-14 · 2 obs
● 2026-07-14 19:32:50
●MXalt1.aspmx.l.google.com2026-07-13 → 2026-07-14 · 2 obs
● 2026-07-14 19:32:50
●MXalt2.aspmx.l.google.com2026-07-13 → 2026-07-14 · 2 obs
● 2026-07-14 19:32:50
●MXalt3.aspmx.l.google.com2026-07-13 → 2026-07-14 · 2 obs
● 2026-07-14 19:32:50
●MXalt4.aspmx.l.google.com2026-07-13 → 2026-07-14 · 2 obs
● 2026-07-14 19:32:50
●MXaspmx.l.google.com2026-07-13 → 2026-07-14 · 2 obs
● 2026-07-14 19:32:50
●MXmail.res.ac2026-07-13 → 2026-07-14 · 2 obs
● 2026-07-14 19:32:50
●MXres.ac2026-07-13 → 2026-07-14 · 2 obs
● 2026-07-14 19:32:50
●A172.104.74.2202026-07-13 → 2026-07-14 · 2 obs
● 2026-07-14 19:32:50
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| ac | a2.nic.ac, b0.nic.ac, c0.nic.ac, a0.nic.ac | 8 records |
| res.ac | ns-207.awsdns-25.com, ns-672.awsdns-20.net, ns-1175.awsdns-18.org, ns-1977.awsdns-55.co.uk | - |
✅ Authoritative Response
Server:205.251.199.185
NS records: ns-207.awsdns-25.com, ns-672.awsdns-20.net, ns-1175.awsdns-18.org, ns-1977.awsdns-55.co.uk
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for res.ac (unsigned zone)
⏱️ Timing
Total: 795ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 172.104.74.220 |
| NS | 4 | ns-1175.awsdns-18.org, ns-1977.awsdns-55.co.uk... |
| MX | 7 | aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)... |
| TXT | 2 | google-site-verification=B4pWkZ0owXLjX4V, v=spf1 +a +mx +ip4:172.104.74.220 includ |
| SOA | 1 | ns-207.awsdns-25.com awsdns-hostmaster.a |
📌 Glue Records Collected
Total: 8
In-bailiwick: 8 (a0.nic.ac, a2.nic.ac, b0.nic.ac...)
Analysis
Mail Server Role
The MX record for res.ac points back to res.ac — it is its own mail server.
mail.res.ac, aspmx.l.google.com and alt1.aspmx.l.google.com tend to be used as mail servers in tandem with res.ac.
IP Addresses
res.ac directs to one IP number, which is 172.104.74.220.
Name Servers
The domain res.ac is delegated to these four name servers: ns-207.awsdns-25.com, ns-672.awsdns-20.net, ns-1175.awsdns-18.org and ns-1977.awsdns-55.co.uk.
There is at least partial name server overlap between res.ac and other domains — d33y7vqqk60qc9.cloudfront.net, betabreakapparel.com, marcioimobiliaria.com.br and two more among them.
All four hostnames — ns-207.awsdns-25.com, ns-672.awsdns-20.net, ns-1175.awsdns-18.org and ns-1977.awsdns-55.co.uk — resolve to two IP numbers apiece: ns-207.awsdns-25.com to 205.251.192.207 and 2600:9000:5300:cf00::1; ns-672.awsdns-20.net to 205.251.194.160 and 2600:9000:5302:a000::1; ns-1175.awsdns-18.org to 205.251.196.151 and 2600:9000:5304:9700::1; ns-1977.awsdns-55.co.uk to 205.251.199.185 and 2600:9000:5307:b900::1.
Mail Servers
The MX records for res.ac point to 7 mail servers; among them: res.ac, mail.res.ac, aspmx.l.google.com and 4 other.
res.ac shares at least some of its mail servers with other domains — for example ns500742.ns500731.ns500754.ns500742.ns500731.ns500731.ns500688.ns500671.ns500671.ns500671.ns500291.ns500649.lustychickser.com, ns500754.ns500754.ns500731.ns500671.ns500705.ns500671.ns500688.ns500671.ns500671.ns500666.ns500291.ns500291.ns500291.ns500291.ns500131.lustychickser.com, eastbaymotors.us and two more.
It is common to find these mail servers paired with mail servers alt2.aspmx.l.google.com, alt3.aspmx.l.google.com, alt4.aspmx.l.google.com and 4 more.
Hosts with two IP numbers each:
aspmx.l.google.com resolves to two addresses: 142.251.179.27 and 2607:f8b0:4004:c2d::1a.
alt1.aspmx.l.google.com resolves to two addresses: 108.177.123.26 and 2800:3f0:4003:c0f::1a.
alt2.aspmx.l.google.com resolves to two addresses: 172.253.116.26 and 2a00:1450:400b:c02::1b.
alt3.aspmx.l.google.com resolves to two addresses: 192.178.223.27 and 2a00:1450:4009:c0f::1a.
alt4.aspmx.l.google.com resolves to two addresses: 172.253.157.26 and 2a00:1450:400c:c23::1b.
Hosts that resolve to one IP address:
The hostname res.ac resolves to 172.104.74.220.
The hostname mail.res.ac resolves to 172.104.74.220.
res.ac along with mail.res.ac each resolve to 172.104.74.220 IP addresses.