coursetextbooks.com - robtex.com

coursetextbooks.com

DNSSEC⚠️ Not signed
A13.248.169.48🇺🇸 Amazon13.248.160.0/20
PTRa904c694c05102f30.awsglobalaccelerator.com
A76.223.54.146🇺🇸 Amazon76.223.48.0/20
NSns2.afternic.com ⭐
A2603:5:2226::45🇺🇸 GODADDY-DNS2603:5:2220::/44
PTRns2.afternic.com
A173.201.66.69🇺🇸 GODADDY-DNS173.201.66.0/23
PTRns2.afternic.com
NSns1.afternic.com
A2603:5:2126::45🇺🇸 GODADDY-DNS2603:5:2120::/44
PTRns1.afternic.com
A97.74.98.69🇺🇸 GODADDY-DNS97.74.98.0/23
PTRns1.afternic.com
NSverification-jnpk9imao4ucwj3yqw5clr.ns101.verify.hn ⚠️ Not in zone NS records
A13.248.169.48🇺🇸 Amazon13.248.160.0/20
PTRa904c694c05102f30.awsglobalaccelerator.com
A76.223.54.146🇺🇸 Amazon76.223.48.0/20
PTRa904c694c05102f30.awsglobalaccelerator.com
TXTv=spf1 -all
SOAns2.afternic.comdns@jomax.net serial=1

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=1774473297
WOT: SAFE (60/100)

Subdomains

mail.coursetextbooks.com

Same first word

coursetextbooks.com

DNS History

25 records (5 active, 20 former)

20162017201820192020202120222023202420252026NSns1.afternic.comns2.afternic.comverification-jnpk9imao4ucwj3yqw5clr.ns101.verify.hnns1.namebrightdns.comns2.namebrightdns.comnsg1.namebrightdns.comnsg2.namebrightdns.comMXanmail.namebrightmail.comA13.248.169.4876.223.54.146107.23.198.240107.23.95.23552.0.96.2452.204.129.2252.206.43.23452.4.72.13752.71.117.9954.174.31.25454.208.74.21554.210.33.19054.236.123.22454.84.74.5254.85.127.70CNAMEhdredirect-lb-399551664.us-east-1.elb.amazonaws.comhdredirect-lb3-890977680.us-east-1.elb.amazonaws.com
●NSns1.afternic.com2026-02-19 → 2026-03-25 · 3 obs
○ 2017-04-19 03:25:42
● 2026-02-19 07:31:00
● 2026-03-25 21:24:22
○NSns1.namebrightdns.com2015-07-17 → 2017-04-19 · 4 obs
● 2015-07-17 15:57:00
● 2017-04-19 03:25:42
○ 2026-02-19 07:31:00
○ 2026-03-25 21:24:22
●NSns2.afternic.com2026-02-19 → 2026-03-25 · 3 obs
○ 2017-04-19 03:25:42
● 2026-02-19 07:31:00
● 2026-03-25 21:24:22
○NSns2.namebrightdns.com2015-07-17 → 2017-04-19 · 7 obs
● 2015-07-17 15:57:00
● 2015-11-17 07:53:20
○ 2016-03-10 12:05:44
● 2016-09-20 02:12:14
● 2017-04-19 03:25:42
○ 2026-02-19 07:31:00
○ 2026-03-25 21:24:22
○NSnsg1.namebrightdns.com2015-11-17 → 2016-03-10 · 5 obs
○ 2015-07-17 15:57:00
● 2015-11-17 07:53:20
● 2016-03-10 12:05:44
○ 2016-09-20 02:12:14
○ 2026-03-25 21:24:22
○NSnsg2.namebrightdns.com2015-07-17 → 2016-03-10 · 5 obs
● 2015-07-17 15:57:00
○ 2015-11-17 07:53:20
● 2016-03-10 12:05:44
○ 2016-09-20 02:12:14
○ 2026-03-25 21:24:22
●NSverification-jnpk9imao4ucwj3yqw5clr.ns101.verify.hn2026-02-19 → 2026-03-25 · 3 obs
○ 2017-04-19 03:25:42
● 2026-02-19 07:31:00
● 2026-03-25 21:24:22
○MXanmail.namebrightmail.com2015-07-17 → 2015-07-17 · 3 obs
● 2015-07-17 15:57:00
○ 2015-11-17 07:53:20
○ 2026-03-25 21:24:22
○A107.23.198.2402016-09-20 → 2016-09-20 · 4 obs
○ 2016-03-10 12:05:44
● 2016-09-20 02:12:14
○ 2017-04-19 03:25:42
○ 2026-03-25 21:24:22
○A107.23.95.2352015-07-17 → 2015-07-17 · 3 obs
● 2015-07-17 15:57:00
○ 2026-02-19 07:31:00
○ 2026-03-25 21:24:22
●A13.248.169.482026-02-19 → 2026-03-25 · 3 obs
○ 2017-04-19 03:25:42
● 2026-02-19 07:31:00
● 2026-03-25 21:24:22
○A52.0.96.242016-03-10 → 2016-03-10 · 4 obs
○ 2015-11-17 07:53:20
● 2016-03-10 12:05:44
○ 2016-09-20 02:12:14
○ 2026-03-25 21:24:22
○A52.204.129.222017-04-19 → 2017-04-19 · 4 obs
○ 2016-09-20 02:12:14
● 2017-04-19 03:25:42
○ 2026-02-19 07:31:00
○ 2026-03-25 21:24:22
○A52.206.43.2342016-09-20 → 2016-09-20 · 4 obs
○ 2016-03-10 12:05:44
● 2016-09-20 02:12:14
○ 2017-04-19 03:25:42
○ 2026-03-25 21:24:22
○A52.4.72.1372016-09-20 → 2016-09-20 · 4 obs
○ 2016-03-10 12:05:44
● 2016-09-20 02:12:14
○ 2017-04-19 03:25:42
○ 2026-03-25 21:24:22
○A52.71.117.992016-03-10 → 2016-03-10 · 4 obs
○ 2015-11-17 07:53:20
● 2016-03-10 12:05:44
○ 2016-09-20 02:12:14
○ 2026-03-25 21:24:22
○A54.174.31.2542015-11-17 → 2015-11-17 · 4 obs
○ 2015-07-17 15:57:00
● 2015-11-17 07:53:20
○ 2016-03-10 12:05:44
○ 2026-03-25 21:24:22
○A54.208.74.2152015-11-17 → 2015-11-17 · 4 obs
○ 2015-07-17 15:57:00
● 2015-11-17 07:53:20
○ 2016-03-10 12:05:44
○ 2026-03-25 21:24:22
○A54.210.33.1902016-09-20 → 2016-09-20 · 4 obs
○ 2016-03-10 12:05:44
● 2016-09-20 02:12:14
○ 2017-04-19 03:25:42
○ 2026-03-25 21:24:22
○A54.236.123.2242016-09-20 → 2016-09-20 · 4 obs
○ 2016-03-10 12:05:44
● 2016-09-20 02:12:14
○ 2017-04-19 03:25:42
○ 2026-03-25 21:24:22
○A54.84.74.522015-07-17 → 2015-07-17 · 3 obs
● 2015-07-17 15:57:00
○ 2026-02-19 07:31:00
○ 2026-03-25 21:24:22
○A54.85.127.702017-04-19 → 2017-04-19 · 4 obs
○ 2016-09-20 02:12:14
● 2017-04-19 03:25:42
○ 2026-02-19 07:31:00
○ 2026-03-25 21:24:22
●A76.223.54.1462026-02-19 → 2026-03-25 · 3 obs
○ 2017-04-19 03:25:42
● 2026-02-19 07:31:00
● 2026-03-25 21:24:22
○CNAMEhdredirect-lb-399551664.us-east-1.elb.amazonaws.com2015-07-17 → 2016-09-20 · 4 obs
● 2015-07-17 15:57:00
● 2016-09-20 02:12:14
○ 2017-04-19 03:25:42
○ 2026-03-25 21:24:22
○CNAMEhdredirect-lb3-890977680.us-east-1.elb.amazonaws.com2017-04-19 → 2017-04-19 · 4 obs
○ 2016-09-20 02:12:14
● 2017-04-19 03:25:42
○ 2026-02-19 07:31:00
○ 2026-03-25 21:24:22

🔍 DNS Trace

Analysis

Hierarchy

mail.coursetextbooks.com is a child of coursetextbooks.com.

IP Addresses

coursetextbooks.com has two IP numbers: 13.248.169.48 and 76.223.54.146.

Other host names, for instance mail.grap.org, hubgirls.com, baron.store, dripness.com and unlockshop.com share IP numbers with coursetextbooks.com.

Name Servers

coursetextbooks.com is delegated to three name servers: ns1.afternic.com, ns2.afternic.com and verification-jnpk9imao4ucwj3yqw5clr.ns101.verify.hn.

coursetextbooks.com at least partially shares name servers with other domains, including velocation.be, shopserver.tactical.eu, mtlonline.com, nichehut.com and mail.hwforum.com.

These name servers are often used with verification-ag3xtxqjhqhiyarqdrht2l.ns101.verify.hn and verification-d3jclucsp89ganyqbydeny.ns101.verify.hn.

Host names with two IP numbers:

ns1.afternic.com: 2603:5:2126::45 and 97.74.98.69

ns2.afternic.com: 2603:5:2226::45 and 173.201.66.69

verification-jnpk9imao4ucwj3yqw5clr.ns101.verify.hn: 13.248.169.48 and 76.223.54.146