Domain report: webex.com

Registration

info

.com generic · MarkMonitor Inc. · expires 2027-02-12

Found

TLD: .com (generic)
ICANN policies apply: yes
Registrar: MarkMonitor Inc.
Registered: 12 February 1999
Last changed: 11 January 2026
Expires: 12 February 2027
Status: client delete prohibited, client transfer prohibited, client update prohibited, server delete prohibited, server transfer prohibited, server update prohibited
Registry nameservers: ns1.as13445.net, ns2.as13445.net
RDAP server: https://rdap.verisign.com/com/v1/

Checks

i

.com is a generic TLD (gTLD)

Generic TLD under an ICANN registry agreement: ICANN-accredited registrars, UDRP and RDAP apply.

#1
✓ TLD delegated and signed #2

.com is delegated in the root zone and DNSSEC-signed.
✓ Expires on 2027-02-12 #3

The registration is valid until 2027-02-12 (112 days).
✓ Transfer locked #4

Registry status: client delete prohibited, client transfer prohibited, client update prohibited, server delete prohibited, server transfer prohibited, server update prohibited.
✓ Registry and delegation match #5

The nameservers registered at the registry are the ones published in DNS.

Delegation

info

ns1.as13445.net, ns2.as13445.net

Found

Parent zone: com
Delegation from: a.gtld-servers.net (192.5.6.30)
NS at the parent: ns1.as13445.net, ns2.as13445.net
NS in the zone: ns1.as13445.net, ns2.as13445.net

Nameserver	Addresses	Network (AS)	Glue
ns1.as13445.net	66.163.52.1 2607:fcf0:30::1	AS13445 WEBEX - Cisco Webex LLC, US AS13445 WEBEX - Cisco Webex LLC, US	-
ns2.as13445.net	66.163.53.1 2607:fcf0:40::1	AS13445 WEBEX - Cisco Webex LLC, US AS13445 WEBEX - Cisco Webex LLC, US	-

Checks

i

2 nameservers

Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.as13445.net, ns2.as13445.net.

#6
✓ Parent and zone agree #7

The parent delegation and the zone's NS records list the same nameservers.
✓ No glue needed #8

All nameservers are outside the zone, so no glue records are needed.
✓ All names resolve #9

Every nameserver name has an address and is not an alias.
✓ Nameservers in different networks #10

The nameservers are spread over 2 IPv4 /24s and 2 IPv6 /48s.
i

All nameservers in one AS

All nameserver addresses are announced by one network operator (AS13445 (WEBEX - Cisco Webex LLC, US): 4 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.

#11
i

All nameserver names under .net

All nameserver names are under one TLD, so a problem with that TLD also makes the nameservers unreachable. Some operators use names under two TLDs for extra resilience.

#12
✓ All reachable over IPv6 #13

Every nameserver has an IPv6 address.

Nameservers

pass

4 of 4 addresses answer authoritatively

Found

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
ns1.as13445.net 66.163.52.1	NOERROR, 75 ms, authoritative	no	yes / yes	refused	-
ns1.as13445.net 2607:fcf0:30::1	NOERROR, 12 ms, authoritative	no	yes / yes	refused	-
ns2.as13445.net 66.163.53.1	NOERROR, 75 ms, authoritative	no	yes / yes	refused	-
ns2.as13445.net 2607:fcf0:40::1	NOERROR, 12 ms, authoritative	no	yes / yes	refused	-

Checks

✓ All respond #14

All 4 nameserver addresses answered.
✓ All authoritative #15

Every responding nameserver answers authoritatively for the zone.
✓ No recursion #16

The nameservers do not answer recursive queries for other domains.
✓ No version disclosed #17

The nameservers don't reveal their software version.
✓ Zone transfers refused #18

No nameserver allows a zone transfer to the public.
✓ TCP supported #19

All nameservers answer over TCP.
✓ EDNS supported #20

All nameservers support EDNS(0).
✓ Public addresses #21

All nameserver addresses are publicly routable.

SOA

warn

serial 2026586350 · primary hns601.sjc03.webex.com

Found

Primary (MNAME): hns601.sjc03.webex.com
Contact (RNAME): csg-ia.cisco.com
Serial: 2026586350
Refresh / retry: 10800 s / 1800 s
Expire: 2419200 s
Negative TTL: 120 s

Serial per nameserver

Nameserver	Serial
ns1.as13445.net (66.163.52.1)	2026586350
ns1.as13445.net (2607:fcf0:30::1)	2026586350
ns2.as13445.net (66.163.53.1)	2026586350
ns2.as13445.net (2607:fcf0:40::1)	2026586350

Checks

✓ Serial 2026586350 everywhere #22

All nameservers serve the same version of the zone.
!

Unusual SOA timers

negative caching TTL (minimum) 2m is outside 5m–1d (RFC 2308 recommends 1–3 hours). Current values: refresh 3h, retry 30m, expire 28d, negative TTL 2m.

#23
i

Hidden master (not resolvable)

The primary nameserver hns601.sjc03.webex.com is not listed as a nameserver and does not resolve publicly: a hidden master, or a placeholder name. Some tools (e.g. dynamic updates) use MNAME to find the primary.

#24
✓ Contact csg-ia@cisco.com #25

The SOA RNAME csg-ia.cisco.com means csg-ia@cisco.com.
✓ Timestamp serial #26

The serial 2026586350 is a Unix timestamp (2034-03-21 20:39 UTC).

DNSSEC

warn

Not signed

Found

Validated by resolver: no

Checks

!

Not signed

The zone is not signed with DNSSEC, so answers can be spoofed. Enable DNSSEC at your DNS provider and publish the DS record at your registrar.

#27

Records

pass

49 records at the apex

Found

Read from: 66.163.52.1:53

Type	Value	TTL
SOA	hns601.sjc03.webex.com. csg-ia.cisco.com. 2026586350 10800 1800 2419200 120	3600
NS	ns2.as13445.net.	3600
NS	ns1.as13445.net.	3600
A	144.196.130.69	300
AAAA	2607:fcf0:2100:0:144:196:130:69	600
MX	10 alln-mx-01.cisco.com.	3600
MX	30 aer-mx-01.cisco.com.	3600
MX	20 rcdn-mx-01.cisco.com.	3600
TXT	"slimtesttxt20170824001"	300
TXT	"lqucp0f6u7alqi7kgrjo5vsov5"	300
TXT	"lrg2pr6u4ubansuv47jtmmfd3p"	300
TXT	"v=spf1 redirect=_spf.webex.com"	300
TXT	"QuoVadis=eed4c791-aa21-4b45-8c91-2d83a93af871"	300
TXT	" ms93683787.msv1.invalid"	300
TXT	"MS=ms93683787"	300
TXT	"amazonses:n3XkGYyvmC8SrhX+CqICjY4eWnyKFwPo6mdHTMsmeu4="	300
TXT	"QuoVadis=5a740d9e-6664-4d4c-8d87-716da9d530a7"	300
TXT	"google-site-verification=D1PXZV2EBUXGvgJdUWr3cahNprUgckDpzo8MgniDQHk"	300
TXT	"9cef3rr776cnjs1cu53q6hrium"	300
TXT	"google-site-verification=t2i1Swk8XPQDj6Llz_4Uxu3OKL3wfO_aaxYylFmQ8MU"	300
TXT	"google-site-verification=3NhfQ1u_2ogGy3CA8qlIfFtMlW_nhx-VO85vAhT15a0"	300
TXT	"google-site-verification=fHXTAHXgtW5_Dzt4PHZKGF2PAI0r6PEHqmHJbkxo4_k"	300
TXT	"MS=ms74589643"	300
TXT	"MS=ms67549965"	300
TXT	"QuoVadis=c1bf1f71-e21f-4ef5-92d9-3285c488767a"	300
TXT	"google-site-verification=qXk-s_bdPaqiuaDN9jJCQjvNyw_hVkxXDhkm-1mZn14"	300
TXT	"google-site-verification=Z4Iwv_W8wkGKrlaPKLdcm3C_LDCydAJD6z3L1MAP7DI"	300
TXT	"im3l8j2k42u788bccbdisp5li"	300
TXT	"google-site-verification=RzBAdlNK125jocPINSM2ZOszpndsXj05vWe7wW2S0SQ"	300
TXT	"_4mb09s73v6a9wckdb66vo493hjjaors"	300
TXT	"_ayh0pajfqje3pjs2pm116pd355r34v0"	300
TXT	"_6ik2pmf86xptsbgsszcs655ujokc92i"	300
TXT	"google-site-verification=JrxFkdPqnLrmVyx1PTP1bKqRT0nxPR4yJKPnswmQiwc"	300
TXT	"_g5c6ucjoc163k9fpvz542l1d1dfrpqo"	300
TXT	"google-site-verification=_t-SfLHtBYLmxc40wrfAo8B9KwGg0jzSx2I1uVBbXLk"	300
TXT	"_ulktgfpu90kjp0ycysgm6rs81a9jw0c"	300
TXT	"google-site-verification=BEWshakJYRMouwSQKX3vk5144-qUL1wwUWLU-XtfQ"	300
TXT	"google-site-verification=BEWshakJYRMouwSQKX_3vk5_144-qUL1wwUWLU-XtfQ"	300
TXT	"MS=ms61160488"	300
TXT	"slimtesttxt20170824002"	300
CAA	128 issuewild "digicert.com"	3600
CAA	128 issuewild "identrust.com"	3600
CAA	128 iodef "mailto:infosec@cisco.com"	3600
CAA	0 issue "globalsign.com"	3600
CAA	0 issue "letsencrypt.org"	3600
CAA	0 issue "pki.goog"	3600
CAA	0 issue "amazon.com"	3600
CAA	0 issue "digicert.com"	3600
CAA	0 issue "identrust.com"	3600

Checks

✓ TTLs within range #32

TTLs: A 5m, AAAA 10m, MX 1h, NS 1h. The NS TTL at the parent is 2d and in the zone 1h; resolvers may use either.
✓ No CNAME at the apex #33

The zone apex has no CNAME record.
✓ No wildcard #34

Names that don't exist return NXDOMAIN.
✓ CAA restricts issuance #35

Certificates may be issued by: digicert.com, identrust.com, globalsign.com, letsencrypt.org, pki.goog, amazon.com.