youdao123.com - robtex.com
youdao123.com
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns-1058.awsdns-04.org ⚠️ Not in zone NS records | ||||||
| A | 2600:9000:5304:2200::1🇺🇸 Amazon2600:9000:5304::/48 - CloudFront | ||||||
| PTR | ns-1058.awsdns-04.org | ||||||
| A | 205.251.196.34🇺🇸 Amazon205.251.196.0/24 prefix | ||||||
| PTR | ns-1058.awsdns-04.org | ||||||
| NS | ns-1655.awsdns-14.co.uk ⚠️ Not in zone NS records | ||||||
| A | 2600:9000:5306:7700::1🇺🇸 Amazon2600:9000:5306::/48 - CloudFront | ||||||
| PTR | ns-1655.awsdns-14.co.uk | ||||||
| A | 205.251.198.119🇺🇸 Amazon205.251.198.0/24 prefix | ||||||
| PTR | ns-1655.awsdns-14.co.uk | ||||||
| NS | ns-310.awsdns-38.com ⚠️ Not in zone NS records | ||||||
| A | 2600:9000:5301:3600::1🇺🇸 Amazon2600:9000:5301::/48 - CloudFront | ||||||
| PTR | ns-310.awsdns-38.com | ||||||
| A | 205.251.193.54🇺🇸 Amazon205.251.193.0/24 prefix | ||||||
| PTR | ns-310.awsdns-38.com | ||||||
| NS | ns-842.awsdns-41.net ⚠️ Not in zone NS records | ||||||
| A | 2600:9000:5303:4a00::1🇺🇸 Amazon2600:9000:5303::/48 - CloudFront | ||||||
| PTR | ns-842.awsdns-41.net | ||||||
| A | 205.251.195.74🇺🇸 Amazon205.251.195.0/24 prefix | ||||||
| PTR | ns-842.awsdns-41.net | ||||||
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1777672081 | ||||||
Same first word
youdao123.com |
Similar names
DNS History
6 records (4 active, 2 former)
○NSdns13.hichina.com2015-08-11 → 2020-02-20 · 4 obs
● 2020-02-20 13:04:44
○ 2026-03-22 01:08:48
○ 2026-05-01 21:53:32
○NSdns14.hichina.com2015-08-11 → 2020-02-20 · 4 obs
● 2020-02-20 13:04:44
○ 2026-03-22 01:08:48
○ 2026-05-01 21:53:32
●NSns-1058.awsdns-04.org2026-03-22 → 2026-05-01 · 3 obs
● 2026-03-22 01:08:48
● 2026-05-01 21:53:32
●NSns-1655.awsdns-14.co.uk2026-03-22 → 2026-05-01 · 3 obs
● 2026-03-22 01:08:48
● 2026-05-01 21:53:32
●NSns-310.awsdns-38.com2026-03-22 → 2026-05-01 · 3 obs
● 2026-03-22 01:08:48
● 2026-05-01 21:53:32
●NSns-842.awsdns-41.net2026-03-22 → 2026-05-01 · 3 obs
● 2026-03-22 01:08:48
● 2026-05-01 21:53:32
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | i.gtld-servers.net, g.gtld-servers.net, a.gtld-servers.net, c.gtld-servers.net... | - |
| youdao123.com | ns-310.awsdns-38.com, ns-842.awsdns-41.net, ns-1655.awsdns-14.co.uk, ns-1058.awsdns-04.org | 2 records |
✅ Authoritative Response
Server:205.251.198.119
NS records: ns-310.awsdns-38.com, ns-842.awsdns-41.net, ns-1655.awsdns-14.co.uk, ns-1058.awsdns-04.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for youdao123.com (unsigned zone)
⏱️ Timing
Total: 370ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns-310.awsdns-38.com, ns-310.awsdns-38.com)
Analysis
Name Servers
youdao123.com is delegated to four name servers: ns-310.awsdns-38.com, ns-842.awsdns-41.net, ns-1058.awsdns-04.org and ns-1655.awsdns-14.co.uk.
youdao123.com at least partially shares its name servers with other domains, for instance bh999bug.com, adjames.com, pozodeltigre.gob.ar, youneeq.ca and melondata.com.
These name servers are commonly used with ns-269.awsdns-33.com, ns-1062.awsdns-04.org and ns-1618.awsdns-10.co.uk.
Host names with two IPs: ns-310.awsdns-38.com points to 2600:9000:5301:3600::1 and 205.251.193.54; ns-842.awsdns-41.net points to 2600:9000:5303:4a00::1 and 205.251.195.74; ns-1058.awsdns-04.org points to 2600:9000:5304:2200::1 and 205.251.196.34; ns-1655.awsdns-14.co.uk points to 2600:9000:5306:7700::1 and 205.251.198.119.