plch.lib.oh.us - robtex.com
plch.lib.oh.us
lib.oh.us
| DNSSEC | ⚠️ Not signed | ||||||
| A | 66.213.127.206🇺🇸 OHGOV-OPLIN-AS2692366.213.0.0/17 66.213.0.0/17 | ||||||
| NS | dns-sgm.ohio.gov ⭐ | ||||||
| NS | ns1.ohio.gov ⚠️ Not in parent delegation | ||||||
| NS | ns2.ohio.gov ⚠️ Not in parent delegation | ||||||
| NS | ns3.ohio.gov ⚠️ Not in parent delegation | ||||||
| NS | ns4.ohio.gov ⚠️ Not in parent delegation | ||||||
| NS | ns5.ohio.gov | ||||||
| NS | ns6.ohio.gov | ||||||
| NS | ns7.ohio.gov | ||||||
| NS | ns8.ohio.gov | ||||||
| SOA | dns-sgm.ohio.govocssc@ohio.gov serial=2010123730 | ||||||
Subdomains
Same first word
Similar names
DNS History
12 records (12 active, 0 former)
●NSns5.ohio.gov2026-06-29 → 2026-07-10 · 3 obs
● 2026-06-29 09:41:46
● 2026-07-10 06:52:16
●NSns6.ohio.gov2026-06-29 → 2026-07-10 · 3 obs
● 2026-06-29 09:41:46
● 2026-07-10 06:52:16
●NSns7.ohio.gov2026-06-29 → 2026-07-10 · 3 obs
● 2026-06-29 09:41:46
● 2026-07-10 06:52:16
●NSns8.ohio.gov2026-06-29 → 2026-07-10 · 3 obs
● 2026-06-29 09:41:46
● 2026-07-10 06:52:16
●MXmail.plch.lib.oh.us2016-12-25 → 2026-07-10 · 2 obs
● 2026-07-10 06:52:16
●MXmail2.plch.lib.oh.us2016-12-25 → 2026-07-10 · 2 obs
● 2026-07-10 06:52:16
●A216.68.34.72016-12-25 → 2026-07-10 · 2 obs
● 2026-07-10 06:52:16
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| us | w.cctld.us, n.cctld.us, y.cctld.us, x.cctld.us... | - |
| lib.oh.us | ns6.ohio.gov, ns5.ohio.gov, ns8.ohio.gov, ns7.ohio.gov | - |
✅ Authoritative Response
Server:18.218.221.7
NS records: ns6.ohio.gov, ns5.ohio.gov, ns8.ohio.gov, ns7.ohio.gov
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for lib.oh.us (unsigned zone)
⏱️ Timing
Total: 412ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 216.68.34.7 |
| NS | 8 | ns2.ohio.gov, ns3.ohio.gov... |
| MX | 2 | mail2.plch.lib.oh.us (pri: 55), mail.plch.lib.oh.us (pri: 44) |
| SOA | 1 | dns-sgm.ohio.gov hostmaster.state.oh.us |
Analysis
Hierarchy
plch.lib.oh.us serves as the parent of mail.plch.lib.oh.us and mail2.plch.lib.oh.us.
IP Addresses
plch.lib.oh.us has exactly one IP address — 216.68.34.7.
Name Servers
plch.lib.oh.us delegates authority to 9 name servers: dns-sgm.ohio.gov, ns1.ohio.gov, ns2.ohio.gov plus 6 other.
At least some of plch.lib.oh.us's name servers are shared with other domains, for example rompir.ohio.gov, highered.ohio.gov, wtcpl.org and two more.
These name servers tend to co-occur with ns3.ohio.gov, ns4.ohio.gov, ns5.ohio.gov and 7 other name servers in the same DNS delegations.
Host names resolving to a single IP address:
dns-sgm.ohio.gov has the IP address 66.144.112.101.
ns1.ohio.gov has the IP address 156.63.130.100.
ns2.ohio.gov has the IP address 156.63.130.68.
ns3.ohio.gov has the IP address 156.63.130.75.
ns4.ohio.gov has the IP address 156.63.130.120.
ns5.ohio.gov has the IP address 3.131.87.78.
ns6.ohio.gov has the IP address 18.218.221.7.
ns7.ohio.gov has the IP address 54.184.106.71.
ns8.ohio.gov has the IP address 54.201.215.146.
Mail Servers
plch.lib.oh.us uses two mail servers, mail2.plch.lib.oh.us and mail.plch.lib.oh.us.
Each of mail2.plch.lib.oh.us and mail.plch.lib.oh.us has one IP address: mail2.plch.lib.oh.us uses 216.68.34.9 and mail.plch.lib.oh.us uses 216.68.34.8.