learnbyseries.com - dns.ninja

`learnbyseries.com`

DNSSEC	⚠️ Not signed
A	69.32.208.74^{🇺🇸 RoadRunner69.32.208.0/22 Proxy-registered route object for Cengage Learning Inc Attn Communications in CSO Mason, OH 45040}
		PTR	`cengagebrain.ae`
		PTR	`adjuncts.biz`
		PTR	`bibliobase.biz`
		PTR	`eduspace.biz`
		PTR	`facultytraining.biz`
		PTR	`geologylink.biz`
		PTR	`cengagebrain.ca`
		PTR	`weinspirefutures.ca`
		PTR	`4letterpress.com`
		PTR	`adjuncts.com`
		PTR	`americaatodds.com`
		PTR	`appliedcalc.com`
		PTR	`atomicdog.com`
		PTR	`atomicdogpublishing.com`
		PTR	`bernielearning.com`
		PTR	`berniestypingtravels.com`
		PTR	`bibliobase.com`
		PTR	`busn4me.com`
		PTR	`c21accounting.com`
		PTR	`cengagebrainasia.com`
		PTR	`cengagebraindead.com`
		PTR	`cengagebraindrain.com`
		PTR	`cengagebrainless.com`
		PTR	`cengagebrane.com`
		PTR	`cengagecareers.com`
		PTR	`cengagecustom.com`
		PTR	`cengageextracredit.com`
		PTR	`cengageheinle.com`
		PTR	`cengagehookup.com`
		PTR	`cengagelearning.com`
		PTR	`cengagemind.com`
		PTR	`cengagemindtap.com`
		PTR	`centgage.com`
		PTR	`cerlabs.com`
		PTR	`cjinaction.com`
		PTR	`collegekeyboarding.com`
		PTR	`contemporarybusiness.com`
		PTR	`contemporarymath.com`
		PTR	`copperhouse.com`
		PTR	`corpfin4me.com`
		PTR	`corpview.com`
		PTR	`course.com`
		PTR	`courseclips.com`
		PTR	`coursecontinuinged.com`
		PTR	`coursedirect.com`
		PTR	`cyberstopmedia.com`
		PTR	`delmarfacultydevelopment.com`
		PTR	`ecram.com`
		PTR	`eduspacecodes.com`
		PTR	`eltcloseup.com`
		PTR	`eltexampreparation.com`
		PTR	`eltkeynote.com`
		PTR	`eltoutcomes.com`
		PTR	`eriginality.com`
		PTR	`etexere.com`
		PTR	`fepeacock.com`
		PTR	`fin4me.com`
		PTR	`finiteandcalc.com`
		PTR	`finitemath.com`
		PTR	`finitemathtutor.com`
		PTR	`fourletterlearning.com`
		PTR	`fourletterpress.com`
		PTR	`g3oceanography.com`
		PTR	`gale-la.com`
		PTR	`galecengage-publicdomain.com`
		PTR	`galelacengage.com`
		PTR	`galeresearcher.com`
		PTR	`getstudious.com`
		PTR	`greenhaven.com`
		PTR	`gwuser.com`
		PTR	`heinlecengage.com`
		PTR	`hybridtexts.com`
		PTR	`ib4m3.com`
		PTR	`ibus4me.com`
		PTR	`infosystems-online.com`
		PTR	`internationalcengage.com`
		PTR	`investigale.com`
		PTR	`investigatingyourcareer.com`
		PTR	`itbp.com`
		PTR	`jogd.com`
		PTR	`keepingtherepublic.com`
		PTR	`keyboarding.com`
		PTR	`kidhavenpress.com`
		PTR	`learn2key.com`
		PTR	`learnby.com`
		PTR	`learnbyseries.com`
		PTR	`learnflow.com`
		PTR	`learntokey.com`
		PTR	`lifecenter.com`
		PTR	`lucentbooks.com`
		PTR	`macro4me.com`
		PTR	`meguffey.com`
		PTR	`mgmt4me.com`
		PTR	`mgmtskills4me.com`
		PTR	`milady-la.com`
		PTR	`miladybeat.com`
		PTR	`mindapps.com`
		PTR	`mktg4me.com`
		PTR	`nationalgeographiclearning.com`
		PTR	`nelsonliteracy.com`
		PTR	`nelsonvhrm.com`
		PTR	`nglelt.com`
		PTR	`nglife.com`
		PTR	`orgb4me.com`
		PTR	`planningworks.com`
		PTR	`pop4e.com`
		PTR	`pse6.com`
		PTR	`pse7.com`
		PTR	`psmedia.com`
		PTR	`reminiscences.com`
		PTR	`riverwithin.com`
		PTR	`sallyseries.com`
		PTR	`schirmercengage.com`
		PTR	`school-to-careers.com`
		PTR	`scseries.com`
		PTR	`seeingsociology.com`
		PTR	`serwayphysics.com`
		PTR	`signature-labs.com`
		PTR	`signaturelabs.com`
		PTR	`smartmove4me.com`
		PTR	`socstark10.com`
		PTR	`socstark9.com`
		PTR	`south-westernlearning.com`
		PTR	`southwesterncengage.com`
		PTR	`southwesternlearning.com`
		PTR	`speakingabout.com`
		PTR	`supplychain-online.com`
		PTR	`swbusinessprojects.com`
		PTR	`swpco.com`
		PTR	`taxforteens.com`
		PTR	`textchoice.com`
		PTR	`thegreendestination.com`
		PTR	`thomsonedu.com`
		PTR	`thomsonelearning.com`
		PTR	`thomsonlearning.com`
		PTR	`tlemea.com`
		PTR	`trophe.com`
		PTR	`trueoutcomes.com`
		PTR	`ubi-sw.com`
		PTR	`universityce.com`
		PTR	`visualizingsociology.com`
		PTR	`wadsworthcengage.com`
		PTR	`econ4me.eu`
		PTR	`mgmt4me.eu`
		PTR	`cengagebrain.hk`
		PTR	`facultytraining.info`
		PTR	`geologylink.info`
		PTR	`kidhavenpress.info`
		PTR	`lucentbooks.info`
		PTR	`nglearning.info`
		PTR	`weinspirefutures.info`
		PTR	`cengagebrain.jp`
		PTR	`cengagebrain.kr`
		PTR	`cengagebrain.lk`
		PTR	`investigale.mx`
		PTR	`4letterpress.net`
		PTR	`brookscolecengage.net`
		PTR	`busn4me.net`
		PTR	`cengage.net`
		PTR	`cengageheinle.net`
		PTR	`corpfin4me.net`
		PTR	`customcengage.net`
		PTR	`etexere.net`
		PTR	`fin4me.net`
		PTR	`fourletterlearning.net`
		PTR	`fourletterpress.net`
		PTR	`galeresearcher.net`
		PTR	`gwuser.net`
		PTR	`heinlecengage.net`
		PTR	`ib4m3.net`
		PTR	`ibus4me.net`
		PTR	`internationalcengage.net`
		PTR	`macro4me.net`
		PTR	`mgmt4me.net`
		PTR	`mgmtskills4me.net`
		PTR	`nationalgeographiclearning.net`
		PTR	`nglearning.net`
		PTR	`orgb4me.net`
		PTR	`schirmercengage.net`
		PTR	`schoolcengage.net`
		PTR	`southwesterncengage.net`
		PTR	`texere.net`
		PTR	`trueoutcomes.net`
		PTR	`wadsworthcengage.net`
		PTR	`weinspirefutures.net`
		PTR	`4letterpress.org`
		PTR	`bcom4me.org`
		PTR	`brookscolecengage.org`
		PTR	`busn4me.org`
		PTR	`cengageheinle.org`
		PTR	`corpfin4me.org`
		PTR	`customcengage.org`
		PTR	`etexere.org`
		PTR	`fin4me.org`
		PTR	`fourletterlearning.org`
		PTR	`fourletterpress.org`
		PTR	`galeresearcher.org`
		PTR	`heinlecengage.org`
		PTR	`ib4m3.org`
		PTR	`ibus4me.org`
		PTR	`internationalcengage.org`
		PTR	`macro4me.org`
		PTR	`mgmt4me.org`
		PTR	`mgmtskills4me.org`
		PTR	`ngextremeexplorer.org`
		PTR	`ngpathfinder.org`
		PTR	`ngpioneer.org`
		PTR	`ngyoungexplorer.org`
		PTR	`orgb4me.org`
		PTR	`schirmercengage.org`
		PTR	`schoolcengage.org`
		PTR	`southwesterncengage.org`
		PTR	`texere.org`
		PTR	`wadsworthcengage.org`
		PTR	`weinspirefutures.org`
		PTR	`cengagebrain.ph`
		PTR	`cengagebrain.pk`
		PTR	`cengagebrain.ru`
		PTR	`heinle-elt.ru`
		PTR	`heinle.ru`
		PTR	`cengagebrain.sg`
		PTR	`cengagebrain.tw`
		PTR	`greenhaven.us`
		PTR	`kidhavenpress.us`
		PTR	`cengage.com.ar`
		PTR	`cengagelearning.com.ar`
		PTR	`cengagebrain.com.bd`
		PTR	`cengage.com.br`
		PTR	`cengagebrain.com.br`
		PTR	`cengagelearning.com.br`
		PTR	`thomsonlearning.com.br`
		PTR	`cengage.com.co`
		PTR	`course.cengage.com`
		PTR	`coursedirect.cengage.com`
		PTR	`icpnacpt.cengage.com`
		PTR	`origin-college.cengage.com`
		PTR	`www2-i.cengage.com`
		PTR	`www2.cengage.com`
		PTR	`oc.course.com`
		PTR	`sam2007sm.course.com`
		PTR	`sam2010psm.course.com`
		PTR	`sam2010sm.course.com`
		PTR	`www.course.com`
		PTR	`pdf.educationdirect.com`
		PTR	`www.eltkeynote.com`
		PTR	`www.learnby.com`
		PTR	`cengagebrain.com.eu`
		PTR	`cengagebrain.com.hk`
		PTR	`cengagebrain.co.id`
		PTR	`cengagebrain.co.il`
		PTR	`cengagebrain.co.in`
		PTR	`cengagebrain.co.kr`
		PTR	`cengagebrain.com.lk`
		PTR	`cengagelearning.com.mx`
		PTR	`investigale.com.mx`
		PTR	`cengagebrain.com.my`
		PTR	`cengagebrain.com.ph`
		PTR	`cengagebrain.com.pk`
		PTR	`cengagebrain.com.sg`
		PTR	`cengagebrain.com.tw`
		PTR	`cengageheinle.co.uk`
		PTR	`eltexampreparation.co.uk`
		PTR	`eltkeynote.co.uk`
		PTR	`eltoutcomes.co.uk`
		PTR	`mcelt.co.uk`
		PTR	`nationalgeographiclife.co.uk`
		PTR	`psych.co.uk`
		PTR	`summertown.co.uk`
		PTR	`cengagebrain.com.vn`
		PTR	`www.support.gale.com`
NS	`ns1x.cengage.net` ⭐ ⚠️ Not in parent delegation
		A	69.32.130.251^{🇺🇸 RoadRunner69.32.130.0/23 Proxy-registered route object for Cengage Learning Inc Attn Communications in CSO Mason, OH 45040}
NS	`dns1.p01.nsone.net` ⚠️ Not in zone NS records
		A	2620:4d:4000:6259:7:1:0:1^{🇺🇸 NSONE2620:4d:4000::/48 2620:4D:4000::/48}
			PTR	`dns1.p01.nsone.net`
		A	198.51.44.1^{🇺🇸 NSONE198.51.44.0/24 198.51.44.0}
			PTR	`dns1.p01.nsone.net`
NS	`dns2.p01.nsone.net` ⚠️ Not in zone NS records
		A	2a00:edc0:6259:7:1::2^{🇺🇸 NSONE2a00:edc0:6259::/48 NS1-2}
			PTR	`dns2.p01.nsone.net`
		A	198.51.45.1^{🇺🇸 NSONE198.51.45.0/24 198.51.45.0}
			PTR	`dns2.p01.nsone.net`
NS	`dns3.p01.nsone.net` ⚠️ Not in zone NS records
		A	2620:4d:4000:6259:7:1:0:3^{🇺🇸 NSONE2620:4d:4000::/48 2620:4D:4000::/48}
			PTR	`dns3.p01.nsone.net`
		A	198.51.44.65^{🇺🇸 NSONE198.51.44.0/24 198.51.44.0}
			PTR	`dns3.p01.nsone.net`
NS	`dns4.p01.nsone.net` ⚠️ Not in zone NS records
		A	2a00:edc0:6259:7:1::4^{🇺🇸 NSONE2a00:edc0:6259::/48 NS1-2}
			PTR	`dns4.p01.nsone.net`
		A	198.51.45.65^{🇺🇸 NSONE198.51.45.0/24 198.51.45.0}
			PTR	`dns4.p01.nsone.net`
NS	`ns2x.cengage.net` ⚠️ Not in parent delegation
		A	69.32.224.38^{🇺🇸 RoadRunner69.32.224.0/24 Proxy-registered route object for Cengage Learning Inc Attn Communications in CSO Mason, OH 45040}
			PTR	`kyindxns4.cengage.net`
			PTR	`ns2.cengage.net`
TXT	`v=spf1 -all`
SOA	`ns1x.cengage.net`hostmaster@ohcinmason.com serial=19

`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.net`nstld@verisign-grs.com serial=1782400430

PTR for

74.208.32.69.in-addr.arpa

Subdomains

new.learnbyseries.com

Same first word

learnbyseries.com

DNS History

13 records (7 active, 6 former)

○NSa1-49.akam.net2026-02-23 → 2026-05-05 · 5 obs

○ 2021-11-07 02:25:38
● 2026-02-23 10:26:54
● 2026-05-05 13:15:04
○ 2026-05-07 14:49:42
○ 2026-06-25 15:25:12

○NSa13-64.akam.net2026-02-23 → 2026-05-05 · 5 obs

○ 2021-11-07 02:25:38
● 2026-02-23 10:26:54
● 2026-05-05 13:15:04
○ 2026-05-07 14:49:42
○ 2026-06-25 15:25:12

○NSa14-65.akam.net2026-02-23 → 2026-05-05 · 5 obs

○ 2021-11-07 02:25:38
● 2026-02-23 10:26:54
● 2026-05-05 13:15:04
○ 2026-05-07 14:49:42
○ 2026-06-25 15:25:12

●NSdns1.p01.nsone.net2026-02-23 → 2026-06-25 · 3 obs

○ 2021-11-07 02:25:38
● 2026-02-23 10:26:54
● 2026-06-25 15:25:12

●NSdns2.p01.nsone.net2026-02-23 → 2026-06-25 · 3 obs

○ 2021-11-07 02:25:38
● 2026-02-23 10:26:54
● 2026-06-25 15:25:12

●NSdns3.p01.nsone.net2026-02-23 → 2026-06-25 · 3 obs

○ 2021-11-07 02:25:38
● 2026-02-23 10:26:54
● 2026-06-25 15:25:12

●NSdns4.p01.nsone.net2026-05-07 → 2026-06-25 · 3 obs

○ 2026-05-05 13:15:04
● 2026-05-07 14:49:42
● 2026-06-25 15:25:12

○NSns1.cengage.net2015-08-13 → 2016-09-19 · 4 obs

● 2015-08-13 01:32:34
● 2016-09-19 01:42:52
○ 2021-11-07 02:25:38
○ 2026-06-25 15:25:12

●NSns1x.cengage.net2021-11-07 → 2026-06-25 · 3 obs

○ 2016-09-19 01:42:52
● 2021-11-07 02:25:38
● 2026-06-25 15:25:12

○NSns2.cengage.net2015-08-13 → 2016-09-19 · 4 obs

● 2015-08-13 01:32:34
● 2016-09-19 01:42:52
○ 2021-11-07 02:25:38
○ 2026-06-25 15:25:12

●NSns2x.cengage.net2021-11-07 → 2026-06-25 · 3 obs

○ 2016-09-19 01:42:52
● 2021-11-07 02:25:38
● 2026-06-25 15:25:12

○A69.32.148.1212015-08-13 → 2016-04-03 · 4 obs

● 2015-08-13 01:32:34
● 2016-04-03 10:20:36
○ 2016-09-19 01:42:52
○ 2026-06-25 15:25:12

●A69.32.208.742016-09-19 → 2026-06-25 · 3 obs

○ 2016-04-03 10:20:36
● 2016-09-19 01:42:52
● 2026-06-25 15:25:12

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
learnbyseries.com	dns1.p01.nsone.net, dns2.p01.nsone.net, dns3.p01.nsone.net, dns4.p01.nsone.net	-

✅ Authoritative Response

Server:198.51.45.65

NS records: dns1.p01.nsone.net, dns2.p01.nsone.net, dns3.p01.nsone.net, dns4.p01.nsone.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for learnbyseries.com (unsigned zone)

⏱️ Timing

Total: 632ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`69.32.208.74`
NS	2	`ns1x.cengage.net, ns2x.cengage.net`
TXT	1	`v=spf1 -all`
SOA	1	`ns1x.cengage.net hostmaster.ohcinmason.c`

Analysis

Hierarchy

new.learnbyseries.com is delegated beneath learnbyseries.com.

IP Addresses

learnbyseries.com directs to one IP number, which is 69.32.208.74.

Among the host names that share IP numbers with learnbyseries.com are corpfin4me.net, cengagebrain.co.kr, eltoutcomes.co.uk and two others.

Name Servers

The DNS delegation for learnbyseries.com covers 6 name servers: ns1x.cengage.net, ns2x.cengage.net, dns1.p01.nsone.net and 3 more.

There is at least partial name server overlap between learnbyseries.com and other domains — custodywin.com, ch-zfx.asia, qualtrus.co.in and two more among them.

These name servers regularly appear alongside dns2.p01.nsone.net, dns3.p01.nsone.net, dns4.p01.nsone.net and 7 other name servers in NS record sets.

Hosts with two IP numbers each:

dns1.p01.nsone.net maps to two IP addresses — 198.51.44.1 and 2620:4d:4000:6259:7:1:0:1.

dns2.p01.nsone.net maps to two IP addresses — 198.51.45.1 and 2a00:edc0:6259:7:1::2.

dns3.p01.nsone.net maps to two IP addresses — 198.51.44.65 and 2620:4d:4000:6259:7:1:0:3.

dns4.p01.nsone.net maps to two IP addresses — 198.51.45.65 and 2a00:edc0:6259:7:1::4.

Hosts that resolve to one IP address:

ns1x.cengage.net points to the IP address 69.32.130.251.

ns2x.cengage.net points to the IP address 69.32.224.38.