expr.run - robtex.com
expr.run
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3031::ac43:8b74🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3032::6815:1adb🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.26.219Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.139.116🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | abby.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:50::adf5:3a64🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | abby.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c064🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | abby.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:2064🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | abby.ns.cloudflare.com | ||||||
| A | 108.162.192.100🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | abby.ns.cloudflare.com | ||||||
| A | 172.64.32.100🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | abby.ns.cloudflare.com | ||||||
| A | 173.245.58.100🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | abby.ns.cloudflare.com | ||||||
| NS | margo.ns.cloudflare.com | ||||||
| A | 2606:4700:58::a29f:2c90🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | margo.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c390🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | margo.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:2390🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | margo.ns.cloudflare.com | ||||||
| A | 108.162.195.144🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | margo.ns.cloudflare.com | ||||||
| A | 162.159.44.144Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | margo.ns.cloudflare.com | ||||||
| A | 172.64.35.144🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | margo.ns.cloudflare.com | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.26.219, 172.67.139.116 | ||||||
| IPv6 hints | 2606:4700:3031::ac43:8b74, 2606:4700:3032::6815:1adb | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=138, name=cloudflare-ech.com | ||||||
| SOA | abby.ns.cloudflare.comdns@cloudflare.com serial=2412771439 | ||||||
run
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | v0n0.nic.run ⭐ | ||||||
| NS | v0n1.nic.run | ||||||
| NS | v0n2.nic.run | ||||||
| NS | v0n3.nic.run | ||||||
| NS | v2n0.nic.run | ||||||
| NS | v2n1.nic.run | ||||||
| SOA | v0n0.nic.runhostmaster@donuts.email serial=1788445973 | ||||||
Same first word
Similar names
Previous names
Next names
DNS History
6 records (6 active, 0 former)
●NSabby.ns.cloudflare.com2026-08-29 → 2026-09-03 · 2 obs
● 2026-09-03 14:48:50
●NSmargo.ns.cloudflare.com2026-08-29 → 2026-09-03 · 2 obs
● 2026-09-03 14:48:50
●A104.21.26.2192026-08-29 → 2026-09-03 · 2 obs
● 2026-09-03 14:48:50
●A172.67.139.1162026-08-29 → 2026-09-03 · 2 obs
● 2026-09-03 14:48:50
●A2606:4700:3031::ac43:8b742026-08-29 → 2026-09-03 · 2 obs
● 2026-09-03 14:48:50
●A2606:4700:3032::6815:1adb2026-08-29 → 2026-09-03 · 2 obs
● 2026-09-03 14:48:50
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| run | v0n3.nic.run, v0n1.nic.run, v2n1.nic.run, v0n2.nic.run... | 12 records |
| expr.run | abby.ns.cloudflare.com, margo.ns.cloudflare.com | - |
✅ Authoritative Response
Server:172.64.32.100
NS records: abby.ns.cloudflare.com, margo.ns.cloudflare.com
🔒 DNSSEC Status
❌ Bogus (DNSSEC validation failed)
Validation error at run: Error: DNS query timeout: 161.232.16.40 for DNSKEY run
⏱️ Timing
Total: 3709ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.21.26.219, 172.67.139.116 |
| AAAA | 2 | 2606:4700:3032::6815:1adb, 2606:4700:3031::ac43:8b74 |
| NS | 2 | abby.ns.cloudflare.com, margo.ns.cloudflare.com |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | abby.ns.cloudflare.com dns.cloudflare.co |
📌 Glue Records Collected
Total: 12
In-bailiwick: 12 (v0n3.nic.run, v0n3.nic.run, v0n1.nic.run...)
Analysis
IP Addresses
expr.run resolves to four IP addresses: 104.21.26.219, 172.67.139.116, 2606:4700:3031::ac43:8b74 and 2606:4700:3032::6815:1adb.
Among the host names that share IP numbers with expr.run are voclare.com, cuinfosecforum.com, justindanielbizsolutions.com and two others.
Name Servers
The NS records for expr.run delegate to abby.ns.cloudflare.com and margo.ns.cloudflare.com.
expr.run has the same name server delegation as a number of other domains, such as littlepony1384.pages.dev, yang-daily503.workers.dev, 8fcl7i.workers.dev and two more.
expr.run has at least partial name server overlap with other domains, such as nc30rhkyllzvu0ocr.workers.dev, ubaw.cc, pokemongame.cc and two others.
It is common to see these name servers used together with name servers lloyd.ns.cloudflare.com and ajay.ns.cloudflare.com.
Host names resolving to 6 IP numbers:
abby.ns.cloudflare.com maps to 108.162.192.100, 172.64.32.100, 173.245.58.100 and 3 additional IP addresses.
margo.ns.cloudflare.com maps to 108.162.195.144, 162.159.44.144, 172.64.35.144 and 3 additional IP addresses.