edns4.ultradns.org
145 indexed domains delegated to this nameserver
Domains below list edns4.ultradns.org in their NS record set. Useful for mapping DNS providers, finding peer sites on shared managed-DNS, and surfacing infrastructure relationships.
145 indexed domains in edns4.ultradns.org. Oldest: fordfound.org (1993-06-22). Newest: nyceppo.com (2025-06-24).
Top registrars: CSC Corporate Domains, Inc. (78), Network Solutions, LLC (15), NameCheap, Inc. (14), MarkMonitor Inc. (11), Gandi SAS (6)
- registrar-servers.comNameCheap, Inc. · #138 · 96/100
- namecheaphosting.comNameCheap, Inc. · #1863 · 100/100
- namecheap.comNameCheap, Inc. · #2939 · 88/100
- uhc.comCSC Corporate Domains, Inc. · #3105 · 96/100
- optum.comCSC Corporate Domains, Inc. · #7187 · 96/100
- corpnamesvcs.comCSC Corporate Domains, Inc. · #17213 · 96/100
- rwbaird.comGoDaddy Corporate Domains, LLC · #22493 · 96/100
- uhcprovider.comCSC Corporate Domains, Inc. · #26082 · 100/100
- healthsafe-id.comCSC Corporate Domains, Inc. · #32432 · 96/100
- privateemail.comNameCheap, Inc. · #32949 · 96/100
- toluna.comGandi SAS · #34721 · 96/100
- unitedhealthgroup.comCSC Corporate Domains, Inc. · #35312 · 96/100
- rakanto.comCSC Corporate Domains, Inc. · #36720 · 96/100
- uhg.comCSC Corporate Domains, Inc. · #38434 · 96/100
- ascensus.comMarkMonitor Inc. · #38902 · 96/100
- umr.comCSC Corporate Domains, Inc. · #43242 · 96/100
- surveyrouter.comGandi SAS · #43484 · 96/100
- fordfoundation.orgNetwork Solutions, LLC · #45900 · 96/100
- advisory.comCSC Corporate Domains, Inc. · #48917 · 96/100
- park-your-domain.comNameCheap, Inc. · #52246 · 88/100
- epri.comNetwork Solutions, LLC · #55846 · 100/100
- zoetis.comMarkMonitor Inc. · #56654 · 96/100
- bankid.comAbion AB · #59351 · 100/100
- perceptyx.comNameCheap, Inc. · #60350 · 88/100
- ajmadison.comGoDaddy.com, LLC · #61493 · 100/100
- optumrx.comCSC Corporate Domains, Inc. · #64657 · 96/100
- earlywarning.comCSC Corporate Domains, Inc. · #67409 · 96/100
- vfipayna.comCSC Corporate Domains, Inc. · #67602 · 96/100
- automationdirect.comNetwork Solutions, LLC · #70462 · 100/100
- jellyfish.systemsNameCheap, Inc. · #70639 · 96/100
- ebates.comMarkMonitor Inc. · #72870 · 100/100
- engagement.aiNameCheap, Inc. · #84817 · 100/100
- emblemhealth.comCSC Corporate Domains, Inc. · #96555 · 96/100
- zoetispetcare.comMarkMonitor Inc. · #97447 · 96/100
- pyx-int.comNameCheap, Inc. · #97537 · 96/100
- zelle.comCSC Corporate Domains, Inc. · #97804 · 100/100
- paze.comCSC Corporate Domains, Inc. · #97980 · 100/100
- corpvpnsvcs.comCSC Corporate Domains, Inc. · #98842 · 96/100
- myuhc.comCSC Corporate Domains, Inc. · #99549 · 88/100
- saxotrader.comCSC Corporate Domains, Inc. · #100041 · 88/100
- businessroundtable.orgNetwork Solutions, LLC · #105145 · 100/100
- optumfinancial.comCSC Corporate Domains, Inc. · #116920 · 96/100
- healthybenefitsplus.comCSC Corporate Domains, Inc. · #121136 · 96/100
- solutran.comCSC Corporate Domains, Inc. · #124922 · 100/100
- optumbank.comCSC Corporate Domains, Inc. · #128441 · 96/100
- rrcbsn.comGoDaddy.com, LLC · #133312 · 96/100
- atriushealth.orgCSC Corporate Domains, Inc. · #135159 · 96/100
- nc-img.comNameCheap, Inc. · #137536 · 96/100
- zoetisus.comMarkMonitor Inc. · #145201 · 96/100
- hancockwhitney.comNetwork Solutions, LLC · #146665 · 100/100