cloud-lab.us - dns.ninja
cloud-lab.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 ⚠️ Not in parent delegation | ||||||
| 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=1786123213 | ||||||
Same first word
cloud-lab.info |
cloud-lab.us |
cloud-lab.es |
cloud-lab.ru |
cloud-lab.pl |
cloud-lab.net |
cloud-lab.com |
cloud-lab.org |
Similar names
DNS History
6 records (5 active, 1 former)
●NSns.emulab.net2015-06-22 → 2026-08-07 · 2 obs
● 2026-08-07 17:29:04
●NSns2.emulab.net2015-06-22 → 2026-08-07 · 2 obs
● 2026-08-07 17:29:04
●NSns5.emulab.net2015-06-22 → 2026-08-07 · 2 obs
● 2026-08-07 17:29:04
○MXmailhub.flux.utah.edu2015-06-22 → 2020-03-16 · 4 obs
● 2020-03-16 01:31:28
○ 2026-02-23 15:18:40
○ 2026-08-07 17:29:04
●MXops.emulab.net2026-02-23 → 2026-08-07 · 3 obs
● 2026-02-23 15:18:40
● 2026-08-07 17:29:04
●A155.98.32.602015-06-22 → 2026-08-07 · 2 obs
● 2026-08-07 17:29:04
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| us | m.cctld.us, w.cctld.us, y.cctld.us, x.cctld.us... | - |
| cloud-lab.us | ns.emulab.net, ns5.emulab.net | - |
✅ Authoritative Response
Server:155.98.32.70
NS records: ns.emulab.net, ns5.emulab.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for cloud-lab.us (unsigned zone)
⏱️ Timing
Total: 849ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 155.98.32.60 |
| NS | 3 | ns.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 |
Analysis
IP Addresses
cloud-lab.us directs to one IP number, which is 155.98.32.60.
Other host names share IP numbers with cloud-lab.us; cloudlab.us is one such example.
Name Servers
Three name servers are authoritative for cloud-lab.us: ns2.emulab.net, ns5.emulab.net and ns.emulab.net.
The name servers of cloud-lab.us overlap at least partially with those of other domains — among them phantomnet.org, cloudlab.umass.edu, 38.98.155.in-addr.arpa and two more.
These name servers commonly appear in delegations together with paper.emulab.net, ns4.emulab.net, ns3.emulab.net and 4 other.
Three hostnames, one IP address apiece: ns2.emulab.net resolves to 155.98.60.2, ns5.emulab.net resolves to 155.99.144.4 and ns.emulab.net resolves to 155.98.32.70.
Mail Servers
cloud-lab.us routes its mail through a single mail server, ops.emulab.net.
cloud-lab.us has the same mail server arrangement as a number of other domains, for example protogeni.net, instageni.net, phantomnet.org and two more.
There is at least a partial overlap in mail servers between cloud-lab.us and other domains like ops.emulab.net, boss.emulab.net and emulab.net.
It is common to find these mail servers paired with the mail servers mailhub.flux.utah.edu.
There is one IP number for ops.emulab.net: 155.98.33.74.