cloudlab.us - dns.ninja
cloudlab.us
| DNSSEC | ⚠️ Not signed | ||||||
| A | 155.98.32.60🇺🇸 AS17055155.98.32.0/20 This is a UofU owned prefix announced by UEN | ||||||
| NS | ns2.emulab.net ⭐ | ||||||
| A | 155.98.60.2🇺🇸 AS17055155.98.0.0/16 This is a UEN Customer route. | ||||||
| PTR | bas.flux.utah.edu | ||||||
| NS | ns.emulab.net | ||||||
| A | 155.98.32.70🇺🇸 AS17055155.98.32.0/20 This is a UofU owned prefix announced by UEN | ||||||
| PTR | boss.emulab.net | ||||||
| NS | ns5.emulab.net | ||||||
| A | 155.99.144.4🇺🇸 AS17055155.99.144.0/24 This is a UofU owned prefix announced by UEN | ||||||
| PTR | ns5.emulab.net | ||||||
| MX | ops.emulab.net ⭐ | ||||||
| A | 155.98.33.74🇺🇸 AS17055155.98.32.0/20 This is a UofU owned prefix announced by UEN | ||||||
| PTR | ops.emulab.net | ||||||
| TXT | v=spf1 mx ip4:155.98.32.0/20 ip4:155.98.60.0/22 | ||||||
| SOA | ns.emulab.nettestbed-ops@flux.utah.edu 2026-07-30 #1 | ||||||
us
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.cctld.us ⭐ | ||||||
| NS | b.cctld.us | ||||||
| NS | f.cctld.us | ||||||
| NS | k.cctld.us | ||||||
| NS | m.cctld.us | ||||||
| NS | n.cctld.us | ||||||
| NS | w.cctld.us | ||||||
| NS | x.cctld.us | ||||||
| NS | y.cctld.us | ||||||
| SOA | a.cctld.usadmin@tldns.godaddy serial=1786522768 | ||||||
Subdomains
Same first word
Similar names
DNS History
6 records (5 active, 1 former)
●NSns.emulab.net2015-06-22 → 2026-08-12 · 2 obs
● 2026-08-12 08:29:34
●NSns2.emulab.net2015-06-22 → 2026-08-12 · 2 obs
● 2026-08-12 08:29:34
●NSns5.emulab.net2015-06-22 → 2026-08-12 · 2 obs
● 2026-08-12 08:29:34
○MXmailhub.flux.utah.edu2015-06-22 → 2021-05-07 · 4 obs
● 2021-05-07 18:33:18
○ 2026-02-24 02:28:52
○ 2026-08-12 08:29:34
●MXops.emulab.net2026-02-24 → 2026-08-12 · 3 obs
● 2026-02-24 02:28:52
● 2026-08-12 08:29:34
●A155.98.32.602015-06-22 → 2026-08-12 · 2 obs
● 2026-08-12 08:29:34
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| us | y.cctld.us, m.cctld.us, f.cctld.us, b.cctld.us... | 16 records |
| cloudlab.us | ns.emulab.net, ns2.emulab.net, ns5.emulab.net | - |
✅ Authoritative Response
Server:155.99.144.4
NS records: ns.emulab.net, ns2.emulab.net, ns5.emulab.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for cloudlab.us (unsigned zone)
⏱️ Timing
Total: 599ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 155.98.32.60 |
| NS | 3 | ns2.emulab.net, ns5.emulab.net... |
| MX | 1 | ops.emulab.net (pri: 10) |
| TXT | 1 | v=spf1 mx ip4:155.98.32.0/20 ip4:155.98. |
| SOA | 1 | ns.emulab.net testbed-ops.flux.utah.edu |
📌 Glue Records Collected
Total: 16
In-bailiwick: 16 (b.cctld.us, f.cctld.us, k.cctld.us...)
Analysis
Hierarchy
cloudlab.us serves as the parent of wisc.cloudlab.us and utah.cloudlab.us.
IP Addresses
cloudlab.us has exactly one IP address — 155.98.32.60.
There are other host names — cloud-lab.us among them — that share IP numbers with cloudlab.us.
Name Servers
DNS for cloudlab.us is handled by three authoritative name servers: ns2.emulab.net, ns5.emulab.net and ns.emulab.net.
cloudlab.us shares at least some of its name servers with other domains, including 32.98.155.in-addr.arpa, cloud-lab.us, netbed.org and two others.
These name servers are frequently seen alongside paper.emulab.net, ns4.emulab.net, ns3.emulab.net and 4 other name servers.
ns2.emulab.net, ns5.emulab.net and ns.emulab.net all have one IP address each — ns2.emulab.net directs to 155.98.60.2, ns5.emulab.net directs to 155.99.144.4 and ns.emulab.net directs to 155.98.32.70.
Mail Servers
cloudlab.us uses one mail server — ops.emulab.net.
The mail server setup of cloudlab.us matches that of other domains such as phantomnet.org, aptlab.net, powderwireless.net and two others.
cloudlab.us has mail servers in common with other domains — for example ops.emulab.net, boss.emulab.net and emulab.net.
These mail servers tend to be used in conjunction with the mail servers mailhub.flux.utah.edu.
ops.emulab.net has exactly one IP number: 155.98.33.74.