course2u.com - robtex.com

course2u.com

DNSSEC⚠️ Not signed
A91.195.240.94🇩🇪 SEDO91.195.240.0/23 -NET-PI
NSns1.name.com ⭐
A2a00:edc0:107::1🇺🇸 NSONE2a00:edc0:107::/48
PTRns1.name.com
PTRns1bcp.name.com
PTRns1bdg.name.com
PTRns1bqx.name.com
PTRns1cmt.name.com
PTRns1cnb.name.com
PTRns1cny.name.com
PTRns1crv.name.com
PTRns1cvw.name.com
PTRns1cwy.name.com
PTRns1dhl.name.com
PTRns1dhq.name.com
PTRns1djs.name.com
PTRns1dns.name.com
PTRns1dnx.name.com
PTRns1fkl.name.com
PTRns1gjz.name.com
PTRns1glr.name.com
PTRns1gmz.name.com
PTRns1hnx.name.com
PTRns1hwy.name.com
PTRns1jlp.name.com
PTRns1jsv.name.com
PTRns1kpv.name.com
PTRns1ksz.name.com
PTRns1kwy.name.com
PTRns1lmy.name.com
PTRns1mpz.name.com
PTRns1mtw.name.com
PTRns1ntw.name.com
PTRns1psw.name.com
PTRns1qsy.name.com
PTRns1stv.name.com
PTRns1vwx.name.com
PTRns1.bl.ink
A163.114.216.17🇺🇸 NSONE163.114.216.0/24
PTRns1.name.com
PTRns1bcp.name.com
PTRns1bdg.name.com
PTRns1bqx.name.com
PTRns1cmt.name.com
PTRns1cnb.name.com
PTRns1cny.name.com
PTRns1crv.name.com
PTRns1cvw.name.com
PTRns1cwy.name.com
PTRns1dhl.name.com
PTRns1dhq.name.com
PTRns1djs.name.com
PTRns1dns.name.com
PTRns1dnx.name.com
PTRns1fkl.name.com
PTRns1gjz.name.com
PTRns1glr.name.com
PTRns1gmz.name.com
PTRns1hnx.name.com
PTRns1hwy.name.com
PTRns1jlp.name.com
PTRns1jsv.name.com
PTRns1kpv.name.com
PTRns1ksz.name.com
PTRns1kwy.name.com
PTRns1lmy.name.com
PTRns1mpz.name.com
PTRns1mtw.name.com
PTRns1ntw.name.com
PTRns1psw.name.com
PTRns1qsy.name.com
PTRns1stv.name.com
PTRns1vwx.name.com
PTRns1.bl.ink
NSns1bqx.name.com
A2a00:edc0:107::1🇺🇸 NSONE2a00:edc0:107::/48
PTRns1.name.com
PTRns1bcp.name.com
PTRns1bdg.name.com
PTRns1bqx.name.com
PTRns1cmt.name.com
PTRns1cnb.name.com
PTRns1cny.name.com
PTRns1crv.name.com
PTRns1cvw.name.com
PTRns1cwy.name.com
PTRns1dhl.name.com
PTRns1dhq.name.com
PTRns1djs.name.com
PTRns1dns.name.com
PTRns1dnx.name.com
PTRns1fkl.name.com
PTRns1gjz.name.com
PTRns1glr.name.com
PTRns1gmz.name.com
PTRns1hnx.name.com
PTRns1hwy.name.com
PTRns1jlp.name.com
PTRns1jsv.name.com
PTRns1kpv.name.com
PTRns1ksz.name.com
PTRns1kwy.name.com
PTRns1lmy.name.com
PTRns1mpz.name.com
PTRns1mtw.name.com
PTRns1ntw.name.com
PTRns1psw.name.com
PTRns1qsy.name.com
PTRns1stv.name.com
PTRns1vwx.name.com
PTRns1.bl.ink
A163.114.216.17🇺🇸 NSONE163.114.216.0/24
PTRns1.name.com
PTRns1bcp.name.com
PTRns1bdg.name.com
PTRns1bqx.name.com
PTRns1cmt.name.com
PTRns1cnb.name.com
PTRns1cny.name.com
PTRns1crv.name.com
PTRns1cvw.name.com
PTRns1cwy.name.com
PTRns1dhl.name.com
PTRns1dhq.name.com
PTRns1djs.name.com
PTRns1dns.name.com
PTRns1dnx.name.com
PTRns1fkl.name.com
PTRns1gjz.name.com
PTRns1glr.name.com
PTRns1gmz.name.com
PTRns1hnx.name.com
PTRns1hwy.name.com
PTRns1jlp.name.com
PTRns1jsv.name.com
PTRns1kpv.name.com
PTRns1ksz.name.com
PTRns1kwy.name.com
PTRns1lmy.name.com
PTRns1mpz.name.com
PTRns1mtw.name.com
PTRns1ntw.name.com
PTRns1psw.name.com
PTRns1qsy.name.com
PTRns1stv.name.com
PTRns1vwx.name.com
PTRns1.bl.ink
NSns2knz.name.com
A2402:cf80:107::1🇸🇬 NSONE2402:cf80:107::/48 INC. 55 Broad St 19th Fl
PTRns2.name.com
PTRns2bkr.name.com
PTRns2bls.name.com
PTRns2btz.name.com
PTRns2ckr.name.com
PTRns2clp.name.com
PTRns2cqs.name.com
PTRns2cvx.name.com
PTRns2dfg.name.com
PTRns2dhj.name.com
PTRns2dky.name.com
PTRns2dqr.name.com
PTRns2dqx.name.com
PTRns2fgp.name.com
PTRns2fgv.name.com
PTRns2fhn.name.com
PTRns2fjz.name.com
PTRns2fkr.name.com
PTRns2fln.name.com
PTRns2fwz.name.com
PTRns2glx.name.com
PTRns2gtx.name.com
PTRns2hjl.name.com
PTRns2hkt.name.com
PTRns2jqz.name.com
PTRns2jrt.name.com
PTRns2knz.name.com
PTRns2kqz.name.com
PTRns2kry.name.com
PTRns2lns.name.com
PTRns2nsw.name.com
PTRns2nsy.name.com
PTRns2qvz.name.com
PTRns2.bl.ink
A163.114.216.49🇺🇸 NSONE163.114.216.0/24
PTRns3.name.com
PTRns3bfm.name.com
PTRns3bgq.name.com
PTRns3cfp.name.com
PTRns3cgw.name.com
PTRns3cjl.name.com
PTRns3ckl.name.com
PTRns3cna.name.com
PTRns3cpr.name.com
PTRns3cqz.name.com
PTRns3dgj.name.com
PTRns3dgr.name.com
PTRns3dkz.name.com
PTRns3dty.name.com
PTRns3fgh.name.com
PTRns3fgq.name.com
PTRns3fhx.name.com
PTRns3flt.name.com
PTRns3fqs.name.com
PTRns3ghw.name.com
PTRns3gmt.name.com
PTRns3gmv.name.com
PTRns3gnv.name.com
PTRns3gxy.name.com
PTRns3hjx.name.com
PTRns3jkl.name.com
PTRns3jmt.name.com
PTRns3jnr.name.com
PTRns3jwx.name.com
PTRns3npv.name.com
PTRns3nrz.name.com
PTRns3qtx.name.com
PTRns3qty.name.com
PTRns3sxz.name.com
PTRns3.bl.ink
NSns3npv.name.com
A2a00:edc0:107::49🇺🇸 NSONE2a00:edc0:107::/48
PTRns3.name.com
PTRns3bfm.name.com
PTRns3bgq.name.com
PTRns3cfp.name.com
PTRns3cgw.name.com
PTRns3cjl.name.com
PTRns3ckl.name.com
PTRns3cna.name.com
PTRns3cpr.name.com
PTRns3cqz.name.com
PTRns3dgj.name.com
PTRns3dgr.name.com
PTRns3dkz.name.com
PTRns3dty.name.com
PTRns3fgh.name.com
PTRns3fgq.name.com
PTRns3fhx.name.com
PTRns3flt.name.com
PTRns3fqs.name.com
PTRns3ghw.name.com
PTRns3gmt.name.com
PTRns3gmv.name.com
PTRns3gnv.name.com
PTRns3gxy.name.com
PTRns3hjx.name.com
PTRns3jkl.name.com
PTRns3jmt.name.com
PTRns3jnr.name.com
PTRns3jwx.name.com
PTRns3npv.name.com
PTRns3nrz.name.com
PTRns3qtx.name.com
PTRns3qty.name.com
PTRns3sxz.name.com
PTRns3.bl.ink
A163.114.217.17🇺🇸 NSONE163.114.217.0/24
PTRns2.name.com
PTRns2bkr.name.com
PTRns2bls.name.com
PTRns2btz.name.com
PTRns2ckr.name.com
PTRns2clp.name.com
PTRns2cqs.name.com
PTRns2cvx.name.com
PTRns2dfg.name.com
PTRns2dhj.name.com
PTRns2dky.name.com
PTRns2dqr.name.com
PTRns2dqx.name.com
PTRns2fgp.name.com
PTRns2fgv.name.com
PTRns2fhn.name.com
PTRns2fjz.name.com
PTRns2fkr.name.com
PTRns2fln.name.com
PTRns2fwz.name.com
PTRns2glx.name.com
PTRns2gtx.name.com
PTRns2hjl.name.com
PTRns2hkt.name.com
PTRns2jqz.name.com
PTRns2jrt.name.com
PTRns2knz.name.com
PTRns2kqz.name.com
PTRns2kry.name.com
PTRns2lns.name.com
PTRns2nsw.name.com
PTRns2nsy.name.com
PTRns2qvz.name.com
PTRns2.bl.ink
NSns4cgs.name.com
A2402:cf80:107::49🇸🇬 NSONE2402:cf80:107::/48 INC. 55 Broad St 19th Fl
PTRns4.name.com
PTRns4bfy.name.com
PTRns4bht.name.com
PTRns4blx.name.com
PTRns4bty.name.com
PTRns4cfn.name.com
PTRns4cgs.name.com
PTRns4cjp.name.com
PTRns4clq.name.com
PTRns4cpw.name.com
PTRns4dfh.name.com
PTRns4dls.name.com
PTRns4dmx.name.com
PTRns4fmw.name.com
PTRns4fmx.name.com
PTRns4fpy.name.com
PTRns4fqz.name.com
PTRns4ghm.name.com
PTRns4gvx.name.com
PTRns4hmp.name.com
PTRns4hny.name.com
PTRns4htz.name.com
PTRns4jnz.name.com
PTRns4jpz.name.com
PTRns4kmw.name.com
PTRns4kpx.name.com
PTRns4ksy.name.com
PTRns4lny.name.com
PTRns4lpv.name.com
PTRns4lqx.name.com
PTRns4lrt.name.com
PTRns4qxz.name.com
PTRns4sxy.name.com
PTRns4.bl.ink
A163.114.217.49🇺🇸 NSONE163.114.217.0/24
PTRns4.name.com
PTRns4bfy.name.com
PTRns4bht.name.com
PTRns4blx.name.com
PTRns4bty.name.com
PTRns4cfn.name.com
PTRns4cgs.name.com
PTRns4cjp.name.com
PTRns4clq.name.com
PTRns4cpw.name.com
PTRns4dfh.name.com
PTRns4dls.name.com
PTRns4dmx.name.com
PTRns4fmw.name.com
PTRns4fmx.name.com
PTRns4fpy.name.com
PTRns4fqz.name.com
PTRns4ghm.name.com
PTRns4gvx.name.com
PTRns4hmp.name.com
PTRns4hny.name.com
PTRns4htz.name.com
PTRns4jnz.name.com
PTRns4jpz.name.com
PTRns4kmw.name.com
PTRns4kpx.name.com
PTRns4ksy.name.com
PTRns4lny.name.com
PTRns4lpv.name.com
PTRns4lqx.name.com
PTRns4lrt.name.com
PTRns4qxz.name.com
PTRns4sxy.name.com
PTRns4.bl.ink
SOAns1.name.comhostmaster@nsone.net serial=1750497794

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1774360257

Same first word

course2u.com

DNS History

11 records (6 active, 5 former)

20162017201820192020202120222023202420252026NSns1.name.comns1bqx.name.comns2knz.name.comns3npv.name.comns4cgs.name.comdns10.hichina.comdns9.hichina.comns1.reg.cnns2.reg.cnA91.195.240.94156.234.196.104
○NSdns10.hichina.com2015-06-22 → 2016-04-17 · 4 obs
● 2015-06-22 19:54:40
● 2016-04-17 05:02:06
○ 2017-02-06 00:16:14
○ 2026-03-24 13:55:50
○NSdns9.hichina.com2015-06-22 → 2016-04-17 · 4 obs
● 2015-06-22 19:54:40
● 2016-04-17 05:02:06
○ 2017-02-06 00:16:14
○ 2026-03-24 13:55:50
●NSns1.name.com2026-03-01 → 2026-03-24 · 3 obs
○ 2019-02-02 17:02:26
● 2026-03-01 13:14:22
● 2026-03-24 13:55:50
○NSns1.reg.cn2019-02-02 → 2019-02-02 · 4 obs
○ 2017-02-06 00:16:14
● 2019-02-02 17:02:26
○ 2026-03-01 13:14:22
○ 2026-03-24 13:55:50
●NSns1bqx.name.com2026-03-01 → 2026-03-24 · 3 obs
○ 2019-02-02 17:02:26
● 2026-03-01 13:14:22
● 2026-03-24 13:55:50
○NSns2.reg.cn2019-02-02 → 2019-02-02 · 4 obs
○ 2017-02-06 00:16:14
● 2019-02-02 17:02:26
○ 2026-03-01 13:14:22
○ 2026-03-24 13:55:50
●NSns2knz.name.com2026-03-01 → 2026-03-24 · 3 obs
○ 2019-02-02 17:02:26
● 2026-03-01 13:14:22
● 2026-03-24 13:55:50
●NSns3npv.name.com2026-03-01 → 2026-03-24 · 3 obs
○ 2019-02-02 17:02:26
● 2026-03-01 13:14:22
● 2026-03-24 13:55:50
●NSns4cgs.name.com2026-03-01 → 2026-03-24 · 3 obs
○ 2019-02-02 17:02:26
● 2026-03-01 13:14:22
● 2026-03-24 13:55:50
○A156.234.196.1042019-02-02 → 2019-02-02 · 3 obs
● 2019-02-02 17:02:26
○ 2026-03-01 13:14:22
○ 2026-03-24 13:55:50
●A91.195.240.942026-03-01 → 2026-03-24 · 3 obs
○ 2019-02-02 17:02:26
● 2026-03-01 13:14:22
● 2026-03-24 13:55:50

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comc.gtld-servers.net, m.gtld-servers.net, i.gtld-servers.net, b.gtld-servers.net...-
course2u.comns1bqx.name.com, ns2knz.name.com, ns3npv.name.com, ns4cgs.name.com8 records

✅ Authoritative Response

Server:163.114.216.17

NS records: ns1bqx.name.com, ns2knz.name.com, ns3npv.name.com, ns4cgs.name.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for course2u.com (unsigned zone)

⏱️ Timing

Total: 400ms | Queries: -

📄 Records

TypeCountSample Data
A191.195.240.94
NS4ns1bqx.name.com, ns2knz.name.com...
SOA1ns1.name.com hostmaster.nsone.net

📌 Glue Records Collected

Total: 8

Out-of-bailiwick: 8 (ns1bqx.name.com, ns1bqx.name.com, ns2knz.name.com...)

Analysis

IP Addresses

course2u.com points to an IP address: 91.195.240.94.

other host names include www.bayinvest.net, www.spiru.la, barnumal.com, throneboard.com and clsub.com; they share IP numbers with course2u.com.

Name Servers

course2u.com is delegated to five name servers: ns1.name.com, ns1bqx.name.com, ns2knz.name.com, ns3npv.name.com and ns4cgs.name.com.

course2u.com at least partially shares name servers with other domains, for instance messycloset.com, tenplanets.net, devicediagnostics.live, bypath.net and brooklyntheaterfestival.org.

these name servers are commonly used with ns1cnb.name.com, ns3cna.name.com, ns2fln.name.com, ns1dhl.name.com, ns3bfm.name.com, ns4lpv.name.com, ns2bls.name.com, ns1kwy.name.com, ns3qty.name.com and ns1bcp.name.com.

Host names with two IP numbers

ns1.name.com points to 2a00:edc0:107::1 and 163.114.216.17

ns1bqx.name.com points to 2a00:edc0:107::1 and 163.114.216.17

ns2knz.name.com points to 2402:cf80:107::1 and 163.114.216.49

ns3npv.name.com points to 2a00:edc0:107::49 and 163.114.217.17

ns4cgs.name.com points to 2402:cf80:107::49 and 163.114.217.49

Host names pointing to 2a00:edc0:107::1 are ns1.name.com and ns1bqx.name.com

Host names pointing to 163.114.216.17 are ns1.name.com and ns1bqx.name.com