Last updated on: 2026-01-28

Applicant Information

Full Legal Name: Internet Domain Name System Beijing Engineering Research Center Ltd. (ZDNS)
Doing Business As: ZDNS
Business URL: https://www.zdns.cn/
Primary Business Phone: +86 8618612527633
Primary Business Email: rsp@zdns.cn
Country Code of Location: CN
Application Information
Application Type DNS
Application Status Cleared
Technical Screening Status Cleared
RST Status Cleared
Application Questions
DNS.1.1.Third-Party Certificate
Does or will this RSP have a publicly verifiable, 3rd party certification (e.g. ISO 27001) held directly by the organization and relevant to the registry services under application?
Response
Yes
DNS.1.3.Physical Access Controls
Does or will this RSP have processes and controls to manage physical access to infrastructure and systems, including building access controls, security cameras and/or other sensors, physical environmental monitoring and safety equipment, and alarm systems related to the physical infrastructure?
Response
Yes
DNS.1.4.System Access Controls
Does or will this RSP have processes and controls to manage non-physical access to infrastructure, including network access from both internal systems and external Internet systems, intrusion detection systems, security information and event management systems, network firewalls, network segmentation and isolation, user identification and authentication, and authorization schemes?
Response
Yes
DNS.1.5.Vendor Management
Does or will this RSP have processes and controls pertaining to the selection of vendors and equipment suppliers, management and maintenance of assets while in use, procurement of assets, and safe disposal of assets?
Response
Yes
DNS.1.6.Cryptographic Material
Does or will this RSP routinely renew and keep safe all cryptographic material necessary for the operation of the RSP?
Response
Yes
DNS.1.7.Secure Data At-Rest
Does or will this RSP secure (e.g. encryption, tamper detection, etc…) at-rest data relevant to the operation of the RSP, including but not limited to DNSSEC if applicable?
Response
Yes
DNS.1.8.Secure Data In-Transit
Does or will this RSP secure (e.g. encryption, tamper detection, etc…) in-transit data relevant to the operation of the RSP, including but not limited to DNSSEC if applicable?
Response
Yes
DNS.1.9.Virtualization Controls
If applicable, does or will this RSP have security controls for data in virtualized environments, including controls relevant to both on-premises or private virtualization environments as well as public clouds, network isolation, memory isolation, process isolation, and hypervisor access controls?
Response
Yes
DNS.1.10.CISO
Does or will this RSP have a senior executive primarily in charge of and responsible for security?
Response
Yes
DNS.1.12.Background Checks
Does or will this RSP conduct background checks, both initial and on-going, of personnel and vendors relevant to the registry services under application?
Response
Yes
DNS.1.13.DDOS
Describe the solutions and mitigations to be used to thwart Distributed Denial of Service (DDOS) attacks against the authoritative DNS services.
Response
For DNS services, we have adopted the following measures to combat DDoS attacks: 1. DNS is deployed in multiple data centers globally, each with 50G network bandwidth capacity. 2. Service performance has been enhanced by using software with XDP/DPDK capabilities. 3. The exposure of service IPs and ports has been reduced. 4. The supply of hardware resources has been increased, providing a higher idle ratio to handle up to eight times the normal request volume. 5. Server security has been strengthened, establishing a high security baseline. 6. Rate limiting is implemented for access. 7. Whitelisting or blacklisting have been used for access control.
DNS.1.14.BCP 38
Does or will this RSP comply with BCP 38?
Response
Yes
DNS.1.15.Secure Routing
Does or will this RSP implement routing security of some nature, such as automated route filters, RPKI route origin validation, or other operational practices defined by the Internet Society and Global Cyber Alliance's Mutually Agreed Norms for Routing Security (MANRS)?
Response
Yes
DNS.2.2.Standard Hardware Maintenance
Does or will this RSP have documented, regular, and active practices for the maintenance of hardware relevant to the registry services under application?
Response
Yes
DNS.2.3.Standard Software Maintenance
Does or will this RSP have documented, regular, and active practices for the maintenance, upgrading, and patching of software relevant to the registry services under application?
Response
Yes
DNS.2.4.Standard Hardware Lifecycle
Does or will this RSP have documented, regular, and active practices for the lifecycle of hardware relevant to the registry services under application?
Response
Yes
DNS.2.5.Secure Software Development
Does or will this RSP have documented, regular, and active practices for the secure development of software?
Response
Yes
DNS.2.6.Hardware Maintenance Contingency
Does or will this RSP have documented contingency plans for extraordinary scenarios regarding the maintenance of hardware relevant to the registry services under application?
Response
Yes
DNS.2.7.Software Maintenance Contingency
Does or will this RSP have documented contingency plans for extraordinary scenarios regarding the maintenance, upgrading, and patching of software relevant to the registry services under application?
Response
Yes
DNS.2.8.Hardware Lifecycle Contingency
Does or will this RSP have documented contingency plans for extraordinary scenarios regarding the lifecycle of hardware relevant to the registry services under application?
Response
Yes
DNS.2.9.Software Development Contingency
Does or will this RSP have documented contingency plans for extraordinary scenarios regarding the development of software?
Response
Yes
DNS.2.10.IaC
Does or will this RSP use Infrastructure-as-Code (IaC) to manage all systems relevant to operation of the registry services under application?
Response
Yes
DNS.2.11.Automated Orchestration
Does or will this RSP use automated orchestration to manage all systems relevant to the operation of the registry services under application?
Response
Yes
DNS.3.3.DNS Resiliency
Describe the methods resiliency for DNS, including the use of anycast, primary and secondary DNS authoritative servers, and hidden DNS zone transfer servers.
Response
Two different DNS software solutions (BIND/Knot) are used to provide services. Across the entire Internet, 8 anycast nodes are deployed. Hidden master (with a minimum of 2 servers) are located in the Beijing CSTNET node. Zone transfers from the hidden masters to each anycast node's DNS servers utilize AXFR/IXFR. To provide redundancy for zone transfers to the 6 anycast nodes in Europe and North America, servers (with a minimum of 2) in the Hong Kong node are selected as the backup masters for these 6 nodes. The data transfer schematic is as follows:
Attachments
DNS.3.4.DNS Zone Distribution Data Center
Does or will this RSP have at least two Tier III (as defined here: https://uptimeinstitute.com/tiers) or equivalent data centers having no inter-dependencies for DNS zone distribution?
Response
Yes
Attachments
DNS.3.5.Anycast Data Center
Does or will this RSP have at least two Tier III or equivalent data centers having no inter-dependencies for global DNS anycast service?
Response
Yes
Attachments
DNS.4.3.DNS Failure
Does or will this RSP have enough coverage of DNS service to accommodate failures of any DNS point-of-presence to maintain minimum Service Level Requirements?
Response
Yes
DNS.5.2.RFC 1034
Does or will this RSP implement RFC 1034 (“DOMAIN NAMES - CONCEPTS AND FACILITIES”)?
Response
Yes
DNS.5.3.RFC 1035
Does or will this RSP implement RFC 1035 (“DOMAIN NAMES - IMPLEMENTATION AND SPECIFICATION”)?
Response
Yes
DNS.5.4.RFC 1123
Does or will this RSP implement RFC 1123 (“Requirements for Internet Hosts -- Application and Support”)?
Response
Yes
DNS.5.5.RFC 1982
Does or will this RSP implement RFC 1982 (“Serial Number Arithmetic”)?
Response
Yes
DNS.5.6.RFC 2181
Does or will this RSP implement RFC 2181 (“Clarifications to the DNS Specification”)?
Response
Yes
DNS.5.7.RFC 3226
Does or will this RSP implement RFC 3226 (“DNSSEC and IPv6 A6 aware server/resolver message size requirements”)?
Response
Yes
DNS.5.8.RFC 3596
Does or will this RSP implement RFC 3596 (“DNS Extensions to Support IP Version 6”)?
Response
Yes
DNS.5.9.RFC 3597
Does or will this RSP implement RFC 3597 (“Handling of Unknown DNS Resource Record (RR) Types”)?
Response
Yes
DNS.5.10.RFC 4343
Does or will this RSP implement RFC 4343 (“Domain Name System (DNS) Case Insensitivity Clarification”)?
Response
Yes
DNS.5.11.RFC 6891
Does or will this RSP implement RFC 6891 (“Extension Mechanisms for DNS (EDNS(0)))”?
Response
Yes
DNS.5.12.RFC 7766
Does or will this RSP implement RFC 7766 (“DNS Transport over TCP - Implementation Requirements”)?
Response
Yes
DNS.5.13.RFC 5001
Does or will this RSP implement RFC 5001 (“DNS Name Server Identifier (NSID) Option”)?
Response
Yes
DNS.5.14.RFC 6168
Does or will this RSP operate DNS service according to RFC 6168 (“Requirements for Management of Name Servers for the DNS”)?
Response
Yes
DNS.5.15.RFC 8906
Does or will this RSP operate DNS service according to RFC 8906 (“A Common Operational Problem in DNS Servers: Failure to Communicate”)?
Response
Yes
DNS.5.16.RFC 9199
Does or will this RSP operate DNS service according to RFC 9199 (“Considerations for Large Authoritative DNS Server Operators”)?
Response
Yes
DNS.5.17.RFC 9210
Does or will this RSP operate DNS service according to RFC 9210 (“DNS Transport over TCP - Operational Requirements”)?
Response
Yes
DNS.5.18.DNS Performance
Does or will this RSP meet the standards established in the Service Level Agreements defined in Specification 10 of the ICANN Registry Agreement (version 2024) with regard to DNS?
Response
Yes
DNS.5.19.DNS Virtualization
Does or will this RSP compartmentalize (e.g. virtualization) the DNS service in such a manner that each compartment (e.g. containers, virtual machines, physical machines) is dedicated to DNS (excluding system services such as monitoring, remote access and NTP)?
Response
Yes
DNS.5.21.Individual Node Monitoring
Does or will this RSP monitor all unique DNS servers of all anycast nodes?
Response
Yes
DNS.5.22.IANA Compliance
Does or will this RSP operate authoritative DNS servers according to the IANA Technical Requirements for Authoritative Name Servers (https://www.iana.org/help/nameserver-requirements)?
Response
Yes
DNS.6.3.IPv4 Performance
Does or will this RSP meet the standards established in Specification 10 of the ICANN Registry Agreement (version 2024) with regard to DNS and IPv4?
Response
Yes
DNS.6.4.IPv6 Performance
Does or will this RSP meet the standards established in Specification 10 of the ICANN Registry Agreement (version 2024) with regard to DNS and IPv6?
Response
Yes
DNS.7.1.DNS Service Continuity Exercise
Does or will this RSP regularly exercise DNS Service continuity actions?
Response
Yes
DNS.7.3.Transfer of Operations
Does or will this RSP be capable of transferring all applicable operations to another RSP as defined by the Material Subcontracting Arrangement Technical Questions?
Response
Yes
DNS.7.4.EBERO
Does or will this RSP participate in coordinated Emergency Back-end Registry Operator (EBERO) transitions, including but not limited to maintaining the DNSSEC chain of trust, of hosted gTLDs when the business relationship of this RSP and the Registry Operator is not in good standing?
Response
Yes
DNS.8.1.Internal Monitoring
Does or will this RSP monitor for faults inside its own network?
Response
Yes
DNS.8.2.External Monitoring
Does or will this RSP monitor for faults from a point outside any of its own networks?
Response
Yes
DNS.8.3.Fault Triage
Does or will this RSP have documented processes for aggregation and triage of faults?
Response
Yes
DNS.8.4.Fault Mitigation
Does or will this RSP have documented processes to mitigate faults once detected?
Response
Yes
DNS.8.6.Fault Minimization
Does or will this RSP have processes to minimize faults during maintenance of systems, including both automated processes and manual change control processes?
Response
Yes
DNS.8.7.On-call Staff
Does or will this RSP have personnel capable of reacting to and mitigating faults 24 hours per day of every day of every year of service?
Response
Yes
DNS.8.8.Service Disruptions
Provide documentation regarding any RSP functions currently being served for any gTLD, the domain names of the gTLDs, and all service disruptions for each gTLD in the past six months, where a service disruption is defined by Specification 10 of the ICANN Registry Agreement (2024).
Response
No ICANN warnings in the past 6 months.