ucas.io - robtex.com
ucas.io
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3033::ac43:80f7🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3037::6815:15d🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.1.93Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.128.247🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | doug.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:58::adf5:3b9f🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | doug.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c19f🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | doug.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:219f🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | doug.ns.cloudflare.com | ||||||
| A | 108.162.193.159🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | doug.ns.cloudflare.com | ||||||
| A | 172.64.33.159🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | doug.ns.cloudflare.com | ||||||
| A | 173.245.59.159🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | doug.ns.cloudflare.com | ||||||
| NS | phoenix.ns.cloudflare.com | ||||||
| A | 2606:4700:50::a29f:26c9🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | phoenix.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c2c9🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | phoenix.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:22c9🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | phoenix.ns.cloudflare.com | ||||||
| A | 108.162.194.201🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | phoenix.ns.cloudflare.com | ||||||
| A | 162.159.38.201Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | phoenix.ns.cloudflare.com | ||||||
| A | 172.64.34.201🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | phoenix.ns.cloudflare.com | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.1.93, 172.67.128.247 | ||||||
| IPv6 hints | 2606:4700:3033::ac43:80f7, 2606:4700:3037::6815:15d | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=97, name=cloudflare-ech.com | ||||||
| SOA | doug.ns.cloudflare.comdns@cloudflare.com serial=2406774097 | ||||||
io
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.nic.io ⭐ | ||||||
| NS | a2.nic.io | ||||||
| NS | b0.nic.io | ||||||
| NS | c0.nic.io | ||||||
| SOA | a0.nic.iohostmaster@donuts.email serial=1785532620 | ||||||
Same first word
Similar names
DNS History
6 records (6 active, 0 former)
●NSdoug.ns.cloudflare.com2026-07-14 → 2026-07-31 · 2 obs
● 2026-07-31 21:26:20
●NSphoenix.ns.cloudflare.com2026-07-14 → 2026-07-31 · 2 obs
● 2026-07-31 21:26:20
●A104.21.1.932026-07-14 → 2026-07-31 · 2 obs
● 2026-07-31 21:26:20
●A172.67.128.2472026-07-14 → 2026-07-31 · 2 obs
● 2026-07-31 21:26:20
●A2606:4700:3033::ac43:80f72026-07-14 → 2026-07-31 · 2 obs
● 2026-07-31 21:26:20
●A2606:4700:3037::6815:15d2026-07-14 → 2026-07-31 · 2 obs
● 2026-07-31 21:26:20
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| io | b0.nic.io, a0.nic.io, a2.nic.io, c0.nic.io | - |
| ucas.io | doug.ns.cloudflare.com, phoenix.ns.cloudflare.com | - |
✅ Authoritative Response
Server:108.162.193.159
NS records: doug.ns.cloudflare.com, phoenix.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ucas.io (unsigned zone)
⏱️ Timing
Total: 416ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 172.67.128.247, 104.21.1.93 |
| AAAA | 2 | 2606:4700:3033::ac43:80f7, 2606:4700:3037::6815:15d |
| NS | 2 | doug.ns.cloudflare.com, phoenix.ns.cloudflare.com |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | doug.ns.cloudflare.com dns.cloudflare.co |
Analysis
IP Addresses
ucas.io has four IP addresses: 104.21.1.93, 172.67.128.247, 2606:4700:3033::ac43:80f7 and 2606:4700:3037::6815:15d.
Among the host names that share IP numbers with ucas.io are imageonglass.co.uk, mail.erj.com.tr, ziebao.com and two others.
Name Servers
ucas.io is served by two delegated name servers, doug.ns.cloudflare.com and phoenix.ns.cloudflare.com.
ucas.io has the same name server delegation as a number of other domains, such as aroundtularecounty.com, 127m.work, ktaaa.org and two more.
ucas.io partially shares its NS delegation with several other domains, including westsidefamilychiro.com, d6backup.pw, rosemeyerchiro.com and two others.
These name servers are regularly seen alongside lamar.ns.cloudflare.com and margo.ns.cloudflare.com as name servers.
Host names resolving to 6 IP numbers:
doug.ns.cloudflare.com carries IP addresses 108.162.193.159, 172.64.33.159 and 173.245.59.159, with 3 other addresses beyond those.
phoenix.ns.cloudflare.com carries IP addresses 108.162.194.201, 162.159.38.201 and 172.64.34.201, with 3 other addresses beyond those.