Domain report: uhc.com

Registration

info

.com generic · CSC Corporate Domains, Inc. · expires 2027-08-29

Found

TLD: .com (generic)
ICANN policies apply: yes
Registrar: CSC Corporate Domains, Inc.
Registered: 30 August 1994
Last changed: 25 August 2026
Expires: 29 August 2027
Status: client transfer prohibited
Registry nameservers: edns4.ultradns.biz, edns4.ultradns.com, edns4.ultradns.net, edns4.ultradns.org, epla1.corpnamesvcs.com, epla2.corpnamesvcs.com
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 2027-08-29 #3

The registration is valid until 2027-08-29 (310 days).
✓ Transfer locked #4

Registry status: client transfer prohibited.
✓ Registry and delegation match #5

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

Delegation

warn

edns4.ultradns.biz, edns4.ultradns.com, edns4.ultradns.net, edns4.ultradns.org, epla1.corpnamesvcs.com, epla2.corpnamesvcs.com

Found

Parent zone: com
Delegation from: a.gtld-servers.net (192.5.6.30)
NS at the parent: edns4.ultradns.biz, edns4.ultradns.com, edns4.ultradns.net, edns4.ultradns.org, epla1.corpnamesvcs.com, epla2.corpnamesvcs.com
NS in the zone: epla1.corpnamesvcs.com, epla2.corpnamesvcs.com

Nameserver	Addresses	Network (AS)	Glue
edns4.ultradns.biz (parent only)	204.74.67.4 2610:a1:1015::204	AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US	-
edns4.ultradns.com (parent only)	204.74.66.4 2001:502:f3ff::204	AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US	2001:502:f3ff::204 204.74.66.4
edns4.ultradns.net (parent only)	204.74.110.4 2610:a1:1014::204	AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US	-
edns4.ultradns.org (parent only)	204.74.111.4 2001:502:4612::204	AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US	-
epla1.corpnamesvcs.com	149.111.128.204	AS10879 UHC - Unitedhealthcare, US	149.111.128.204
epla2.corpnamesvcs.com	168.183.36.43	AS10879 UHC - Unitedhealthcare, US	168.183.36.43

Checks

✓ 6 nameservers #6

Delegated to edns4.ultradns.biz, edns4.ultradns.com, edns4.ultradns.net, edns4.ultradns.org, epla1.corpnamesvcs.com, epla2.corpnamesvcs.com.
!

NS sets differ

The nameservers at the parent and in the zone should be the same. Only at the parent: edns4.ultradns.biz, edns4.ultradns.com, edns4.ultradns.net, edns4.ultradns.org. edns4.ultradns.biz, edns4.ultradns.com, edns4.ultradns.net, edns4.ultradns.org, epla1.corpnamesvcs.com, epla2.corpnamesvcs.com report NS epla1.corpnamesvcs.com epla2.corpnamesvcs.com.

#7
✓ 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 6 IPv4 /24s and 4 IPv6 /48s.
✓ 2 autonomous systems #11

The nameservers are spread over: AS10879 (UHC - Unitedhealthcare, US): 2 addresses; AS12008 (VERCARA - Vercara, LLC, US): 8 addresses.
✓ Nameserver names under 4 TLDs #12

Nameserver names use the TLDs .biz, .com, .net, .org.
i

Partly IPv6

These nameservers have no IPv6 address: epla1.corpnamesvcs.com, epla2.corpnamesvcs.com.

#13

Nameservers

info

10 of 10 addresses answer authoritatively

Found

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
edns4.ultradns.biz 204.74.67.4	NOERROR, 3 ms, authoritative	no	yes / yes	refused	UltraDNS Nameserver
edns4.ultradns.biz 2610:a1:1015::204	NOERROR, 3 ms, authoritative	no	yes / yes	refused	UltraDNS Nameserver
edns4.ultradns.com 204.74.66.4	NOERROR, 30 ms, authoritative	no	yes / yes	refused	UltraDNS Nameserver
edns4.ultradns.com 2001:502:f3ff::204	NOERROR, 34 ms, authoritative	no	yes / yes	refused	UltraDNS Nameserver
edns4.ultradns.net 204.74.110.4	NOERROR, 6 ms, authoritative	no	yes / yes	refused	UltraDNS Nameserver
edns4.ultradns.net 2610:a1:1014::204	NOERROR, 4 ms, authoritative	no	yes / yes	refused	UltraDNS Nameserver
edns4.ultradns.org 204.74.111.4	NOERROR, 13 ms, authoritative	no	yes / yes	refused	UltraDNS Nameserver
edns4.ultradns.org 2001:502:4612::204	NOERROR, 31 ms, authoritative	no	yes / yes	refused	UltraDNS Nameserver
epla1.corpnamesvcs.com 149.111.128.204	NOERROR, 133 ms, authoritative	no	yes / yes	refused	-
epla2.corpnamesvcs.com 168.183.36.43	NOERROR, 129 ms, authoritative	no	yes / yes	refused	-

Checks

✓ All respond #14

All 10 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.
i

Identifying string disclosed

These nameservers answer version queries with a string that is not a version number: edns4.ultradns.biz: "UltraDNS Nameserver"; edns4.ultradns.com: "UltraDNS Nameserver"; edns4.ultradns.net: "UltraDNS Nameserver"; edns4.ultradns.org: "UltraDNS Nameserver".

#17
✓ 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 685560 · primary epla1.corpnamesvcs.com

Found

Primary (MNAME): epla1.corpnamesvcs.com
Contact (RNAME): hostmaster.uhc.com
Serial: 685560
Refresh / retry: 300 s / 30 s
Expire: 604800 s
Negative TTL: 900 s

Serial per nameserver

Nameserver	Serial
edns4.ultradns.biz (204.74.67.4)	685560
edns4.ultradns.biz (2610:a1:1015::204)	685560
edns4.ultradns.com (204.74.66.4)	685560
edns4.ultradns.com (2001:502:f3ff::204)	685560
edns4.ultradns.net (204.74.110.4)	685560
edns4.ultradns.net (2610:a1:1014::204)	685560
edns4.ultradns.org (204.74.111.4)	685560
edns4.ultradns.org (2001:502:4612::204)	685560
epla1.corpnamesvcs.com (149.111.128.204)	685560
epla2.corpnamesvcs.com (168.183.36.43)	685560

Checks

✓ Serial 685560 everywhere #22

All nameservers serve the same version of the zone.
!

Unusual SOA timers

refresh 5m is outside 20m–1d. Current values: refresh 5m, retry 30s, expire 7d, negative TTL 15m.

#23
✓ Primary is a public nameserver #24

The primary nameserver epla1.corpnamesvcs.com is one of the listed nameservers.
✓ Contact hostmaster@uhc.com #25

The SOA RNAME hostmaster.uhc.com means hostmaster@uhc.com.
✓ Counter serial #26

The serial 685560 is a plain counter.

DNSSEC

pass

Signed, DS published at parent

Found

Validated by resolver: yes
Denial of existence: NSEC3
NSEC3: 0 iterations, 0-byte salt
Signatures valid until: 26 October 2026

DS at the parent

Key tag	Algorithm	Digest	Matches a key
59642	RSASHA256 (8)	SHA256 16C7ADE0903021FB…	yes

DNSKEY in the zone

Key tag	Role	Algorithm
42663	ZSK (256)	RSASHA256 (8)
180	ZSK (256)	RSASHA256 (8)
65195	KSK (257)	RSASHA256 (8)
59642	KSK (257)	RSASHA256 (8)

Checks

✓ Signed and validated #27

The zone is signed, the parent publishes a DS record, and the resolver validates the answers.
✓ DS matches a key #28

The DS record at the parent matches a key in the zone: key tag 59642 (SHA256).
✓ Modern algorithms #29

Key algorithms: RSASHA256 (8).
✓ Short-lived signatures (online signing) #30

Signatures are valid for 97h0m0s and created on demand; the current one was made at 2026-10-22 01:01 UTC and expires at 2026-10-26 01:33 UTC.
✓ NSEC3 as recommended #31

The zone uses NSEC3 with 0 iterations and no salt (RFC 9276).

Records

pass

60 records at the apex

Found

Read from: 204.74.67.4:53

Type	Value	TTL
SOA	epla1.corpnamesvcs.com. hostmaster.uhc.com. 685560 300 30 604800 900	300
NS	epla1.corpnamesvcs.com.	300
NS	epla2.corpnamesvcs.com.	300
A	20.80.218.166	300
A	20.221.105.198	300
MX	5 mxa-0077b904.gslb.pphosted.com.	300
MX	5 mxb-0077b904.gslb.pphosted.com.	300
TXT	"MS=ms27805985"	300
TXT	"nintex.66d9bddeb5916d50cec4074c"	300
TXT	"a92cc98f-f338-4748-89fd-aa1a046f4946"	300
TXT	"asv=e8e0b3d366d7be44e0bd0d0ef89cbe3b"	300
TXT	"SFMC-ltsO8KaFwzk0RPjNO2Ss8l-vEv9Uko5ultb3LTr2"	300
TXT	"docusign=319df0d6-d86e-4fed-8f12-cd23cb1e4fee"	300
TXT	"docusign=58fecd98-791b-4a64-a807-17cf401396e3"	300
TXT	"jamf-site-verification=RnwS5yZFlXD2NcyifdzbPw"	300
TXT	"jamf-site-verification=bwrhyJ61WMWmUS7TpptV8g"	300
TXT	"canva-site-verification=CkHvZp6ES8Zc485Q4Rtfgw"	300
TXT	"google-gws-recovery-domain-verification=66083861"	300
TXT	"google-gws-recovery-domain-verification=67530246"	300
TXT	"bitrise-verification=57adf39439083ec0-JxVNREDIaFy9"	300
TXT	"pendo-domain-verification=afHVvoegMCXLDAdx47_4zLkhnAI"	300
TXT	"airtable-verification=399cd3beff0269114abffd5352d2920c"	300
TXT	"openai-domain-verification=dv-4tZHIgkjUmhiPggGxC7CxcMb"	300
TXT	"docker-verification=57dff4e7-0433-4866-9df4-76ed1e731ef5"	300
TXT	"v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com ~all"	300
TXT	"cloudflare_dashboard_sso=339d1936151f9e0d297f7344c655b15c"	300
TXT	"miro-verification=5ea04a0c26989ed5656ae2b88aa2e5c474f973ab"	300
TXT	"smartsheet-site-validation=izeLQ5K4mruHZrJb-d-fV0xkxqGM4rp_"	300
TXT	"vercel-domain-verification-64vmd8=s8rqkPbUxBFpiWIFhhOG1HH2k"	300
TXT	"vercel-domain-verification-8pt5k3=rgGV8OrhzJ1ufS08vyPysheWF"	300
TXT	"vercel-domain-verification-a0qddy=l6oYNWLzyaYMTBjg9eNNBbzMI"	300
TXT	"vercel-domain-verification-h7gr9s=ZuoFAPAWj81Y7r3tg13eVmHsl"	300
TXT	"vercel-domain-verification-mx38a6=iGHLqBpb2cNRxicgH8w4mFONX"	300
TXT	"vercel-domain-verification-ngx0pj=44lAKyjmrAP4UcUSc0uLlfxbZ"	300
TXT	"vercel-domain-verification-nhmhdz=WTS8unwUNkbOVHfnt7pXgGrur"	300
TXT	"vercel-domain-verification-pt8k7b=3NErFTECfdyhJa7Rz0TbKX6E1"	300
TXT	"vercel-domain-verification-sv02d3=t5gsChWDLBgTdb9KP9hz1ggyT"	300
TXT	"onetrust-domain-verification=8c79430538ee4d5d951a92f1a80a891d"	300
TXT	"anthropic-domain-verification-7hf87v=XldGEEaSTYnp7FR5fD2EuCF2A"	300
TXT	"new-relic-domain-verification=3a10b4127fc04714a3d664adfd8919cc"	300
TXT	"2e2af8956b76cb6c5324deb4fbfc91c182044093c9f63d49d7fc902d6ab0fd4f"	300
TXT	"google-site-verification=Iui_keS7JieeO26aZ4ij4_9FBPx42sK2KAs6KFtjd78"	300
TXT	"google-site-verification=LmXHPchrMmtMtXvEoiKROwM90eKbmUFLxmKoBOEVdBc"	300
TXT	"google-site-verification=MRYu6FCFgjFFUUyR006EPXDPte7qabDsXcRgf9VjDkA"	300
TXT	"google-site-verification=b6ytN-oHrroEk8T0HKMnCb7u-W4EsbOC_ksDTNxUdJw"	300
TXT	"google-site-verification=n-T6z-GRk768X5pZSPseDrRm95fFvsiqq4Caf4_2Jgw"	300
TXT	"google-site-verification=tjttGqhmaJqZjn2dyoMLkSmgkBI34m2mlGI7UXrlJZk"	300
TXT	"google-site-verification=uddewiV5sJZfHIHLgntVzd6B-udFdr3ZAXkqDNvetcg"	300
TXT	"google-site-verification=x-cpUH-XkESM0PpKShKwx1MfU0j6KcHtC4af0UPFncg"	300
TXT	"liveramp-site-verification=Xv49gNBA6vm__YeKHNay9J-ZRfJmKJlaVhUm4m2XbQ0"	300
TXT	"insomnia-validation=638846f996b945d381b7ffa9339663688a46a8f149fe5d50a64d651fb7672f3c"	300
TXT	"stripe-verification=51224bbc433316f2b8f71438e1a8de5c7b3c42e709833613518cf1a9f07a449e"	300
TXT	"stripe-verification=b148f8c88b1d3b715fd66b7a580e01ee36ae2057d8cd0dcc4e8b84f572f3a459"	300
TXT	"stripe-verification=f5ffe2615f5c33e916600d69ee3e77719049cd8778d5d0d8480d3abd696d9790"	300
TXT	"stripe-verification=f737f340fb2bf98b02348769d27132bdfbe9b1d056d08d6079da88cc15d3972d"	300
TXT	"Dynatrace-site-verification=c890bae3-aa5a-4ce8-8f27-eefbd630fb54__7e8l7l4lp54qc4nhhnfilihuo8"	300
TXT	"Dynatrace-site-verification=cf8cb813-22b3-4c10-82b0-499e8e794f59__ginikqaseo12jvmkb4te5fc0i4"	300
TXT	"adobe-idp-site-verification=9a5c47599b4f379d5e29ede339f3da7f9e1689f8e16709c98e397c86a1c68122"	300
TXT	"atlassian-domain-verification=Ak5GBLix8t8r5DnxQD8I/d4LS1oVxIWH1LYuO8PK5cFB1nzlVDZvhJQ1G4Bzwadv"	300
CAA	0 issuemail "sectigo.com"	3600

Checks

✓ TTLs within range #32

TTLs: A 5m, MX 5m, NS 5m. The NS TTL at the parent is 2d and in the zone 5m; 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: .