pdflibr.com - robtex.com
pdflibr.com
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=1778575811 | ||||||
Subdomains
www.pdflibr.com |
Same first word
pdflibr.com |
DNS History
8 records (5 active, 3 former)
○NSf1g1ns1.dnspod.net2017-08-10 → 2017-08-10 · 3 obs
○ 2026-02-15 21:11:40
○ 2026-05-12 08:52:42
○NSf1g1ns2.dnspod.net2017-08-10 → 2017-08-10 · 3 obs
○ 2026-02-15 21:11:40
○ 2026-05-12 08:52:42
●NSlisa.dnspod.net2026-02-15 → 2026-05-12 · 3 obs
● 2026-02-15 21:11:40
● 2026-05-12 08:52:42
●NSophiuchus.dnspod.net2026-02-15 → 2026-05-12 · 3 obs
● 2026-02-15 21:11:40
● 2026-05-12 08:52:42
●A106.55.247.202026-02-15 → 2026-05-12 · 3 obs
● 2026-02-15 21:11:40
● 2026-05-12 08:52:42
○A119.29.77.262017-08-10 → 2017-08-10 · 3 obs
○ 2026-02-15 21:11:40
○ 2026-05-12 08:52:42
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| pdflibr.com | lisa.dnspod.net, ophiuchus.dnspod.net | - |
✅ Authoritative Response
Server:1.12.0.1
NS records: lisa.dnspod.net, ophiuchus.dnspod.net
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 4669ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 106.55.247.20 |
| NS | 2 | ophiuchus.dnspod.net, lisa.dnspod.net |
| MX | 2 | mxbiz1.qq.com (pri: 5), mxbiz2.qq.com (pri: 10) |
| TXT | 5 | google-site-verification=yowz_ihftsokYKs, 8zftcygdzq5808rd8gyg5r66xy3h0rr4... |
| SOA | 1 | lisa.dnspod.net freednsadmin.dnspod.com |
Analysis
Hierarchy
The parent of www.pdflibr.com is pdflibr.com.
IP Addresses
pdflibr.com points to a single IP address: 106.55.247.20.
Name Servers
Two name servers lisa.dnspod.net and ophiuchus.dnspod.net handle the delegation for pdflibr.com.
pdflibr.com shares the same name server setup as other domains, for example 9990000.com, nobondo.com, syjzl.cn, kakababa.com and 9ij.net.
Host names with six IP numbers:
lisa.dnspod.net points to 2402:4e00:1470:2::e, 1.12.0.4, 1.14.119.35, 111.13.13.35, 117.89.178.173 and 220.196.136.35.
ophiuchus.dnspod.net points to 2402:4e00:111:fff::c, 1.12.0.1, 36.155.149.176, 101.227.168.35, 111.206.98.235 and 129.211.176.239.
Mail Servers
Two mail servers handle pdflibr.com: mxbiz1.qq.com and mxbiz2.qq.com.
pdflibr.com shares the same mail server setup as other domains, including futuremap.com.cn, mmhdata.com, diemaker.cn, zhuyoufan.com and ti132520.fun.
pdflibr.com shares at least some mail servers with other domains, for example xindianyi.com and vconinfo.com.