packt.com

Link Overview

Avg. Referrer Power Rank

31.8

Median Referrer Power Rank

28.1

Referring Domains

135

Linked Domains

470

Referring Domains by Power Rank

0–9 14

10–19 29

20–29 31

30–39 20

40–49 15

50–59 12

60–69 7

70–79 6

80–89 0

90–100 1

Total 135

Referring Domains

Top referring domains

Referring domain	Power Rank	Global Rank
github.com	93.6	#19
feedly.com	78.6	#641
coursera.org	77.4	#790
dev.to	77.3	#807
linuxfoundation.org	75.1	#1,274
fraunhofer.de	74.2	#1,503
sans.org	70.4	#3,140
exlibrisgroup.com	69.2	#3,910
cnblogs.com	69.1	#3,992
packtpub.com	68.1	#4,642

Show all

Basic Information

TLD

.com

Registration date

9 Sept 1999

Last updated

5 Aug 2026

Expires

9 Sept 2027 (308 days remaining)

Domain statuses

clientTransferProhibited

Registry

VeriSign Global Registry Services

Registrar

Amazon Registrar, Inc.

Subdomain

api.packt.comdocs.api.packt.comauthors.packt.comcatalogue.packt.comcommunity.packt.comcontent.packt.comdownload.packt.comaws.itcerts.packt.comcisa.itcerts.packt.comcism.itcerts.packt.comlearning.packt.compartnerships.packt.comsecurity.packt.comwww.packt.com

DNS

DNS

Type	Name	TTL	Value
A	packt.com	300	104.18.14.34
A	packt.com	300	104.18.15.34
AAAA	packt.com	300	2606:4700::6812:e22
AAAA	packt.com	300	2606:4700::6812:f22
MX	packt.com	300	0 packt-com.mail.protection.outlook.com
NS	packt.com	86400	eva.ns.cloudflare.com
NS	packt.com	86400	max.ns.cloudflare.com
SOA	packt.com	1800	eva.ns.cloudflare.com. dns.cloudflare.com. 2419285606 10000 2400 604800 1800
TXT	packt.com	300	canva-site-verification=BVwoXjCVkS9uT9QpQbirbg
TXT	packt.com	300	bw=SojGC3cDBuVb9QsU7WitSHT0ATN24hEkKleYsk01Imze
TXT	packt.com	300	attio-domain-verification=PXZUR4HMBUZ65JKHX95HH007
TXT	packt.com	300	openai-domain-verification=dv-oK3l6Xbrhn94iJTier17ue9P
TXT	packt.com	300	facebook-domain-verification=dwgy5xav7vdzgpmijkbqfvfgyxs8fc
TXT	packt.com	300	google-site-verification=EMFXXBTESVAFK6xA6Ak_6w1I3dGVSOTayZkYVe2283g
TXT	packt.com	300	google-site-verification=wJMrozPcwGk9DIpZNhj4s3hzrC2SsRRzwQ-ak8PMEvY
TXT	packt.com	300	_globalsign-domain-verification=7QDhK8B7Tf3MoEW7Twd-Y1ZtrntXF4UV63uP88x-3c
TXT	packt.com	300	v=spf1 include:sendgrid.net ip4:168.245.75.197 include:spf.protection.outlook.com -all
TXT	packt.com	300	amazon-business-verification=209857b6f224b7f27ed659b3efcde6c45a1447a8adda87ec7f23881ab9cf8943
TXT	packt.com	300	postman-domain-verification=761024ce29c4b4eddf006348561df16fefad82eaa6878e5f26e743ceba8fb65dea22c1f0087a7866877c7021a6f4e40f2965749e493517421ff952e4e9217a03
CAA	packt.com	300	0 iodef "mailto:caa.notification@packt.com"
CAA	packt.com	300	0 issue "amazon.com"
CAA	packt.com	300	0 issue "amazonaws.com"
CAA	packt.com	300	0 issue "amazontrust.com"
CAA	packt.com	300	0 issue "awstrust.com"
CAA	packt.com	300	0 issue "comodoca.com"
CAA	packt.com	300	0 issue "digicert.com; cansignhttpexchanges=yes"
CAA	packt.com	300	0 issue "letsencrypt.org"
CAA	packt.com	300	0 issue "pki.goog; cansignhttpexchanges=yes"
CAA	packt.com	300	0 issue "ssl.com"
CAA	packt.com	300	0 issuewild "amazon.com"
CAA	packt.com	300	0 issuewild "amazonaws.com"
CAA	packt.com	300	0 issuewild "amazontrust.com"
CAA	packt.com	300	0 issuewild "awstrust.com"
CAA	packt.com	300	0 issuewild "comodoca.com"
CAA	packt.com	300	0 issuewild "digicert.com; cansignhttpexchanges=yes"
CAA	packt.com	300	0 issuewild "letsencrypt.org"
CAA	packt.com	300	0 issuewild "pki.goog; cansignhttpexchanges=yes"
CAA	packt.com	300	0 issuewild "ssl.com"

Show all (38 records)

Email Authentication

MX

Valid

SPF

Valid

DMARC

Warning

DMARC is set to p=quarantine, asking receiving servers to quarantine messages that fail authentication.

Some information is cached or comes from our own analysis, so it may not be current or complete. Our link analysis does not cover every link on the web. Metrics are based on our own methodology and should not be taken as definitive assessments of a domain’s or service’s quality or trustworthiness.