`api.teachingtextbookswebversion.com`

	DNSSEC	⚠️ Not signed
	A	208.91.197.27^{🇻🇬 CONFLUENCE-NETWORK-INC208.91.197.0/24 Confluence Networks Route Object}

`teachingtextbookswebversion.com`

	DNSSEC	⚠️ Not signed
	A	208.91.197.27^{🇻🇬 CONFLUENCE-NETWORK-INC208.91.197.0/24 Confluence Networks Route Object}
	NS	`ns1.worldnic.com` ⭐
	NS	`ns2.worldnic.com`
	SOA	`NS1.WORLDNIC.com`namehost@WORLDNIC.com serial=117081810

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DNS History

1 record (1 active, 0 former)

●A208.91.197.272026-04-14 → 2026-04-28 · 2 obs

● 2026-04-14 09:23:36
● 2026-04-28 15:23:36

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
teachingtextbookswebversion.com	ns1.worldnic.com, ns2.worldnic.com	2 records

✅ Authoritative Response

Server:162.159.26.110

NS records: ns1.worldnic.com, ns2.worldnic.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for teachingtextbookswebversion.com (unsigned zone)

⏱️ Timing

Total: 180ms | Queries: -

📄 Records

Type	Count	Sample Data

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1.worldnic.com, ns2.worldnic.com)

Analysis

IP Addresses

api.teachingtextbookswebversion.com resolves to one IP number: 208.91.197.27.

other host names including www.sso.pn.battery.cam, ncctestctr.com, accessiblecaribbean.com, mail.firemetrics.com and advisarestimate.com share IP numbers with api.teachingtextbookswebversion.com.

api.teachingtextbookswebversion.com - robtex.com