perf-sci.com - robtex.com
perf-sci.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 216.146.223.50🇺🇸 AS7859216.146.192.0/19 Pair Networks, Inc. 2403 Sidney St. STE 210 Pittsburgh, PA 15203 | ||||||
| PTR | perfector.com | ||||||
| NS | dns2.pair.com ⭐ | ||||||
| A | 2607:f441::d892:c318🇺🇸 AS78592607:f441::/32 Pair Networks, Inc. 2403 Sidney St STE 210 Pittsburgh PA 15203 United States | ||||||
| A | 216.146.195.24🇺🇸 AS7859216.146.192.0/19 Pair Networks, Inc. 2403 Sidney St. STE 210 Pittsburgh, PA 15203 | ||||||
| PTR | dns2.pair.com | ||||||
| NS | ns0.ns0.com | ||||||
| A | 2607:f440::d85c:3715🇺🇸 AS78592607:f440::/32 Pair Networks, Inc. 2403 Sidney St. STE 210 Pittsburgh, PA 15203 | ||||||
| PTR | ns0.ns0.com | ||||||
| A | 216.92.55.21🇺🇸 AS7859216.92.0.0/16 Pair Networks, Inc. 2403 Sidney St. STE 210 Pittsburgh, PA 15203 | ||||||
| PTR | ns0.ns0.com | ||||||
| MX | mail1.g21.pair.com ⭐ | ||||||
| A | 2607:f441::d892:c345🇺🇸 AS78592607:f441::/32 Pair Networks, Inc. 2403 Sidney St STE 210 Pittsburgh PA 15203 United States | ||||||
| PTR | mail1.g21.pair.com | ||||||
| A | 216.146.195.69🇺🇸 AS7859216.146.192.0/19 Pair Networks, Inc. 2403 Sidney St. STE 210 Pittsburgh, PA 15203 | ||||||
| PTR | mail1.g21.pair.com | ||||||
| SOA | dns2.pair.comroot@pair.com 2023-01-09 #4 | ||||||
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=1771291435 | ||||||
Same first word
perf-sci.com |
Similar names
DNS History
13 records (4 active, 9 former)
●NSdns2.pair.com2020-03-09 → 2026-03-23 · 3 obs
● 2020-03-09 12:21:02
● 2026-03-23 04:08:46
●NSns0.ns0.com2020-03-09 → 2026-03-23 · 3 obs
● 2020-03-09 12:21:02
● 2026-03-23 04:08:46
○NSns1.abac.com2007-10-30 → 2007-10-30 · 3 obs
○ 2015-05-02 23:21:08
○ 2026-03-23 04:08:46
○NSns2.abac.com2007-10-30 → 2007-10-30 · 3 obs
○ 2015-05-02 23:21:08
○ 2026-03-23 04:08:46
○NSns2239.hostgator.com2015-05-02 → 2016-09-09 · 5 obs
● 2015-05-02 23:21:08
● 2016-09-09 03:42:32
○ 2020-03-09 12:21:02
○ 2026-03-23 04:08:46
○NSns2240.hostgator.com2015-05-02 → 2016-09-09 · 5 obs
● 2015-05-02 23:21:08
● 2016-09-09 03:42:32
○ 2020-03-09 12:21:02
○ 2026-03-23 04:08:46
○NSns6365.hostgator.com2015-05-02 → 2016-09-09 · 5 obs
● 2015-05-02 23:21:08
● 2016-09-09 03:42:32
○ 2020-03-09 12:21:02
○ 2026-03-23 04:08:46
●MXmail1.g21.pair.com2020-03-09 → 2026-03-23 · 3 obs
● 2020-03-09 12:21:02
● 2026-03-23 04:08:46
○MXmx2.abac.com2007-10-30 → 2007-10-30 · 3 obs
○ 2015-05-02 23:21:08
○ 2026-03-23 04:08:46
○MXperf-sci.com2007-10-30 → 2016-09-09 · 4 obs
● 2016-09-09 03:42:32
○ 2020-03-09 12:21:02
○ 2026-03-23 04:08:46
○A192.254.189.1712015-05-02 → 2016-09-09 · 5 obs
● 2015-05-02 23:21:08
● 2016-09-09 03:42:32
○ 2020-03-09 12:21:02
○ 2026-03-23 04:08:46
●A216.146.223.502020-03-09 → 2026-03-23 · 3 obs
● 2020-03-09 12:21:02
● 2026-03-23 04:08:46
○A66.226.83.1782007-10-30 → 2007-10-30 · 3 obs
○ 2015-05-02 23:21:08
○ 2026-03-23 04:08:46
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, f.gtld-servers.net, i.gtld-servers.net, h.gtld-servers.net... | - |
| perf-sci.com | ns0.ns0.com, dns2.pair.com | 4 records |
✅ Authoritative Response
Server:216.146.195.24
NS records: ns0.ns0.com, dns2.pair.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for perf-sci.com (unsigned zone)
⏱️ Timing
Total: 207ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 216.146.223.50 |
| NS | 2 | dns2.pair.com, ns0.ns0.com |
| MX | 1 | mail1.g21.pair.com (pri: 50) |
| SOA | 1 | dns2.pair.com root.pair.com |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns0.ns0.com, ns0.ns0.com, dns2.pair.com...)
Analysis
IP Addresses
perf-sci.com points to a single IP address: 216.146.223.50.
Other host names, for example perfector.org, perfector.info and perfector.com share IPs with perf-sci.com.
Name Servers
Two name servers ns0.ns0.com and dns2.pair.com handle the delegation for perf-sci.com.
perf-sci.com shares the same name server setup as other domains, for example an-olive-branch.org, jillyaziji.com, johnny.dramastic.name, motechperformance.com and wyliecompanies.com.
perf-sci.com at least partially shares name servers with other domains, for example ottawadentallab.com, pinochle.org, freshidea.com, glagasse.org and softerwareconsulting.com.
these name servers are commonly used with the following name servers: dns.pair.com, dns3.pair.com, ns7.ns0.com, ns1.pair.com, ns540.pair.com, ns535.pair.com, ns544.pair.com, ns5.pair.com, ns529.pair.com and dns4.pair.com.
Host names with two IP numbers:
ns0.ns0.com points to 2607:f440::d85c:3715 and 216.92.55.21.
dns2.pair.com points to 2607:f441::d892:c318 and 216.146.195.24.
Mail Servers
The mail1.g21.pair.com mail server handles perf-sci.com.
perf-sci.com shares the same mail server setup as other domains, including unobvious.com, mint.zanshin.net, learmouth.com, hpraiders.com and aumisc.com.
mail1.g21.pair.com points to two IP numbers: 2607:f441::d892:c345 and 216.146.195.69.