lib.pu.ru - robtex.com
lib.pu.ru
| DNSSEC | ⚠️ Not signed | ||||||
| A | 195.70.223.18🇷🇺 ASN-SPBGU195.70.192.0/19 Saint-Petersburg State University University emb, 7/9 SU-199034, SPb, Russia | ||||||
| PTR | www.lib.pu.ru | ||||||
| NS | ns2.pu.ru ⭐ ⚠️ Not in parent delegation | ||||||
| A | 195.70.196.210🇷🇺 ASN-SPBGU195.70.192.0/19 Saint-Petersburg State University University emb, 7/9 SU-199034, SPb, Russia | ||||||
| PTR | ns2.pu.ru | ||||||
| NS | ns.pu.ru ⚠️ Not in parent delegation | ||||||
| A | 195.70.196.219🇷🇺 ASN-SPBGU195.70.192.0/19 Saint-Petersburg State University University emb, 7/9 SU-199034, SPb, Russia | ||||||
| PTR | ns.pu.ru | ||||||
| MX | ironport1.pu.ru ⭐ | ||||||
| MX | ironport2.pu.ru ⭐ | ||||||
| TXT | v=spf1 a mx ip4:195.70.197.0/24 ~all | ||||||
| SOA | ns.pu.ruhostmaster@pu.ru 2025-03-03 #10 | ||||||
pu.ru
| DNSSEC | ⚠️ Not signed | ||||||
| A | 81.89.183.226🇷🇺 ASN-SPBGU81.89.176.0/20 Saint-Petersburg State University University emb, 7/9 SU-199034, SPb, Russia | ||||||
| NS | ns2.pu.ru ⭐ | ||||||
| NS | ns.pu.ru | ||||||
| NS | ns7.spbu.ru | ||||||
| MX | ksmg.pu.ru ⭐ | ||||||
| MX | sas.pu.ru(10) | ||||||
| TXT | v=spf1 +a +mx +ip4:195.70.197.0/24 ~all | ||||||
| TXT | google-site-verification=BzfC7IdMB45dHGkenkmNvB2U7Xcu7eGNQ5fH2Jkpamg | ||||||
| TXT | google-site-verification=4uw8iPGVLyQt-0buLfu2Ss476qMF7dkY_A8hSet092k | ||||||
| TXT | _globalsign-domain-verification=aea8fsfXcGJw7rF3UWf8ET4Kcy2bXPZr3w9a-s8_YQ | ||||||
| SOA | ns.pu.ruhostmaster@pu.ru 2026-02-27 #2 | ||||||
rank #152536 globally
rank #4239 in the tld
WOT: SAFE (54/100)
📈 Tranco rank: #67,264
Subdomains
Same first word
Similar names
DNS History
7 records (5 active, 2 former)
●NSns.pu.ru2015-08-11 → 2026-03-24 · 3 obs
● 2015-08-11 09:14:24
● 2026-03-24 10:06:18
●NSns2.pu.ru2015-08-11 → 2026-03-24 · 3 obs
● 2015-08-11 09:14:24
● 2026-03-24 10:06:18
○MXcgp.pu.ru2008-03-22 → 2008-03-22 · 3 obs
○ 2015-08-11 09:14:24
○ 2026-03-24 10:06:18
●MXironport1.pu.ru2015-08-11 → 2026-03-24 · 3 obs
● 2015-08-11 09:14:24
● 2026-03-24 10:06:18
●MXironport2.pu.ru2015-08-11 → 2026-03-24 · 3 obs
● 2015-08-11 09:14:24
● 2026-03-24 10:06:18
○A194.58.104.1862008-03-22 → 2008-03-22 · 3 obs
○ 2015-08-11 09:14:24
○ 2026-03-24 10:06:18
●A195.70.223.182015-08-11 → 2026-03-24 · 6 obs
● 2015-08-11 09:14:24
● 2015-11-24 15:14:04
○ 2015-12-22 08:08:02
● 2016-01-22 10:31:16
● 2026-03-24 10:06:18
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| ru | a.dns.ripn.net, b.dns.ripn.net, d.dns.ripn.net, e.dns.ripn.net... | - |
| pu.ru | ns2.pu.ru, ns7.spbu.ru, ns.pu.ru | 3 records |
✅ Authoritative Response
Server:195.70.196.219
NS records: ns2.pu.ru, ns7.spbu.ru, ns.pu.ru
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for pu.ru (unsigned zone)
⏱️ Timing
Total: 728ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 195.70.223.18 |
| NS | 2 | ns2.pu.ru, ns.pu.ru |
| MX | 2 | ironport1.pu.ru (pri: 10), ironport2.pu.ru (pri: 10) |
| TXT | 1 | v=spf1 a mx ip4:195.70.197.0/24 ~all |
| SOA | 1 | ns.pu.ru hostmaster.pu.ru |
📌 Glue Records Collected
Total: 3
In-bailiwick: 2 (ns2.pu.ru, ns.pu.ru)
Out-of-bailiwick: 1 (ns7.spbu.ru)
Analysis
Hierarchy
lib.pu.ru is a parent of proxy.lib.pu.ru and dbwiz.lib.pu.ru.
IP Addresses
lib.pu.ru points to a single IP: 195.70.223.18.
Name Servers
Two name servers ns2.pu.ru and ns.pu.ru handle delegation for lib.pu.ru.
lib.pu.ru uses the same name server setup as other domains, for example i45.pu.ru, 214.70.195.in-addr.arpa, jurfak.spb.ru, 216.70.195.in-addr.arpa and 234.19.195.in-addr.arpa.
lib.pu.ru partially shares name servers with other domains; examples include 192.70.195.in-addr.arpa, ad.pu.ru, 210.70.195.in-addr.arpa, 213.70.195.in-addr.arpa and 197.70.195.in-addr.arpa.
These name servers are commonly used with the name servers ns.runnet.ru, ns7.spbu.ru, ns.spbu.ru, ns.iphil.ru and ns.phx.pu.ru.
Host names with one IP number: The host name ns2.pu.ru points to 195.70.196.210 and the host name ns.pu.ru points to 195.70.196.219.
Mail Servers
lib.pu.ru is handled by two mail servers: ironport1.pu.ru and ironport2.pu.ru.
lib.pu.ru has the same mail server setup as other domains, including bio.pu.ru, photonics.phys.spbu.ru, bio.spbu.ru, meta.math.spbu.ru and abiturient.spbu.ru.
lib.pu.ru shares some mail servers with other domains, at least partially, such as hge.pu.ru, math.spbu.ru, apmath.spbu.ru, forest.pu.ru and phil.pu.ru.
these mail servers are often used alongside ksmg.pu.ru, iromport2.pu.ru and ksgm.pu.ru.