DNS Resolution Issue Investigation

@talhamq

As an experienced IT professional, I have the skillset needed for this project. My experience with cloud computing platforms like AWS and Google Cloud, as well as my proficiency with DNS and troubleshooting complex issues, will be invaluable in identifying and resolving the root cause of your domain resolution problem.

@zulqrn

Hi there, I'm a Network Engineer with 7 years of strong hands on experience in DNS managements. I would like to assist you. Please let me know a good time to discuss. Thanks !

@ArchnaAdmin

Hi, I have 8+ years of experience in DNS cofiguration, I will configure and manage all required DNS records to correctly connect your domain with the website, server, and email services. This includes setting up all records (A, CNAME, MX, SPF, DKIM, DMARC). The configuration will ensure proper domain resolution, secure website access (HTTPS), reliable email delivery, and smooth integration with hosting, CDN, or third-party services without disrupting existing functionality. All changes will be carefully tested and verified after setup. Please discuss your requirements so we can get started. Thank you

@MRARIFAKRAM

With my solid 8 years of experience as an IT professional, I have developed a strong skill set that's perfectly aligned with your DNS issue investigation. My broad expertise in Linux system administration, software engineering, and web and mobile application development provides me with a deep understanding of various operating systems including Linux, Windows, macOS, Unix, and mobile platforms like Android and iOS. This versatility will prove invaluable in uncovering the root cause of your DNS inconsistency across different users and networks.

@usmanbashir12100

Hi, I understand this is a critical DNS inconsistency issue following your Cloudflare migration, where different resolvers are returning conflicting IPs leading to NXDOMAIN and SSL errors. This typically points to resolver-level caching contamination, stale delegation, or DNSSEC/misconfiguration conflicts rather than a Cloudflare issue itself. I’ll perform a full DNS trace across global resolvers, verify authoritative records, check DNSSEC status, and identify exactly which networks are serving incorrect IPs and why. I’ll isolate the source of the rogue IPs, audit nameserver delegation and propagation paths, and validate Cloudflare configuration end-to-end. Then I’ll implement fixes such as TTL alignment, cache invalidation strategies, resolver targeting, and DNSSEC corrections if needed. You’ll receive a clear root cause analysis, confirmed resolution across networks, and a step-by-step mitigation plan to ensure stable, consistent domain access going forward. Ready to start right away. Usman Bashir

@Programmers12

I can quickly diagnose inconsistent DNS resolution, trace rogue IP sources, and fix propagation or resolver contamination issues to ensure stable global access via Cloudflare. I’ll run deep DNS tracing, identify faulty resolvers, and implement mitigation for consistent resolution across all networks. Best Regards, Muhammad

@najibe1

Hello, I’m an IT expert with over 20 years of experience in the industry. I hold certifications as a Cisco Certified Networking Professional (300-100 and 300-115), Linux Certified Professional (LPI 101, 102, 103), Red Hat Certified System Administrator, VMware Certified Professional (versions 4, 5, and 5.5), as well as being a Microsoft System Administrator/Engineer from 2003 to 2022 and AZ104

@technologiesit

As an experienced Full Stack Developer, I've come across and effectively resolved numerous issues similar to the DNS resolution problem you're facing at expart.com. Over my career of 10+ years in the field, I've developed an impeccable understanding of DNS and how it interplays with web infrastructure. My SEO and Digital Marketing knowledge can be a cherry on top as I can ensure implementation of strategies to keep your website running seamlessly with minimal disruptions caused by such issues. My goal is to provide not just temporary fixations, but also long-term support for sustainable growth. Let's get started and turn this nagging issue into a thing of the past. Let's build a dependable digital future for your brand!

@ayesha86664

Hi there! You migrated DNS to Cloudflare and the real challenge is isolating why certain external resolvers are still serving rogue IPs despite Cloudflare being authoritative and returning correct records. I recently handled a similar post-migration DNS issue where users were resolving to legacy hosting IPs due to stale upstream caches and misaligned delegation, restoring consistent resolution across all ISPs within hours. That work required deep DNS tracing and resolver-level analysis. I will trace the incorrect IP sources, audit delegation and historical records, test across global resolvers, and implement fixes to eliminate contamination and stabilize resolution everywhere. Check our work: https://www.freelancer.com/u/ayesha86664 Have there been any recent A record changes or previous hosting providers using those exact IPs before the Cloudflare switch? I am ready to start — just say the word. Best Regards, Ayesha

@addressofak

I’m currently managing 100+ domains on Cloudflare, so I’m familiar with exactly this type of post-migration DNS inconsistency issue. I can quickly verify the root cause behind the incorrect resolver responses and isolate where the stale/incorrect IPs are coming from. Let’s connect on chat and I’ll get this resolved urgently for you.

@souravsasmal14

As an experienced Full-Stack Developer and DevOps Engineer, I believe I’m the ideal candidate to tackle your DNS resolution problem. I’ve spent years honing my skills in troubleshooting, which is crucial for this intricate task of investigating and identifying roots of inconsistencies in domain accessibility across various networks. My proficiency extends to both Node.Js and PHP stacks, which should help in understanding and resolving any code-level issues if they exist. Another asset I bring to the table is my extensive experience in Linux administration and Kubernetes (K8s). This forte of mine can be particularly useful when inspecting your current cloud infrastructure (Cloudflare) and identifying if any underlying configuration or deployment issues are causing the fluctuations in DNS resolution. Additionally, my commitment to delivering clean code combined with my thorough approach to infrastructure management make me more than just a troubleshooter; I'm a problem solver. I understand the criticality of a fully-accessible domain, especially for a business like yours, that's why I not only focus on immediate fixing but also ensure that any solution provided is sustainable and prevents future occurrences. Let’s work together and resolve this issue swiftly while securing consistent domain access for all users!

@kamranhyderm

Hello, I’ve reviewed your DNS inconsistency issue after the Cloudflare migration, and I can help identify and resolve the root cause quickly. With 10+ years of experience in DNS, Cloudflare, and network troubleshooting, I’ve handled similar cases involving resolver contamination, stale upstream caching, and propagation anomalies across ISPs. Based on your findings (correct resolution via 1.1.1.1 but incorrect IPs on some networks), this likely points to: • Stale or poisoned DNS caches at ISP resolver level • Residual authoritative records from previous DNS providers • Misconfigured glue records or DNSSEC inconsistencies • Recursive resolver anomalies or CDN edge inconsistencies My approach: • Trace DNS resolution globally across multiple resolvers (ISP + public) • Identify which networks return incorrect IPs and why • Verify authoritative chain, DNSSEC, and NS propagation integrity • Check historical DNS records and potential leakage sources • Provide mitigation steps (TTL strategy, cache purge, fallback configs) Deliverables: ✔ Clear root cause analysis ✔ List of affected resolvers/networks ✔ Actionable fix plan to ensure consistent global resolution I can start immediately and resolve this urgently.

@andersonv15

"Olá! Trabalhamos com uma equipe completa de mais de 5 profissionais especializados. Utilizamos Inteligência Artificial de última geração para agilizar a criação, e como a tecnologia é muito avançada, a margem de erro é mínima (apenas 3%). Ainda assim, todo o trabalho passa por uma revisão manual rigorosa da nossa equipe para garantir 100% de qualidade e perfeição. Somos rápidos e eficientes, conseguimos desenvolver e ENTREGAR O PROJETO PRONTO EM MENOS DE 2 HORAS! Ofereço o serviço completo pelo valor de $23,00 dólares. Garantia de satisfação e pontualidade!"

@ravikumarsingh1

Hi, this is not a normal DNS propagation issue — the presence of multiple incorrect IPs across different resolvers strongly suggests stale delegation, DNS poisoning/caching, or leftover authoritative records somewhere in the chain. I’ve handled similar Cloudflare migrations where inconsistent resolution persists beyond 72 hours. What I’ll do: Trace DNS resolution globally (multiple resolvers/ISPs) Identify which resolvers are returning incorrect IPs Check for: Old authoritative nameservers still being queried Glue record inconsistencies at registrar level DNSSEC misconfiguration (very common cause of NXDOMAIN/SSL errors) Cached/poisoned resolver paths Root cause isolation: Track origin of IPs (159.100.x.x / 81.99.x.x) Verify if any legacy hosting/CDN is still referenced Inspect full DNS chain (root → TLD → authoritative) Fix & mitigation: Correct delegation / DNSSEC if broken Purge/override problematic caching paths Apply Cloudflare-specific optimizations Ensure consistent global resolution Deliverables: Clear root cause explanation Fixed DNS behavior across networks Verification tests + mitigation steps Timeline: Few hours (deep analysis + fix) Pricing: £250–₹350 This needs proper DNS tracing, not guesswork — I can resolve it quickly. Let me know

@slims

Hi, I've dealt with this exact type of issue before and I'm confident I can get to the bottom of it quickly. What you're describing is not a standard propagation delay. The fact that multiple incorrect IPs are being returned by different resolvers, and those IPs have no connection to your Cloudflare setup, points to something more specific: either upstream resolver contamination, a stale delegation in a parent zone, or in rarer cases, BGP-level anomalies affecting how certain ISPs reach Cloudflare's authoritative servers. I can start immediately and aim to have a full diagnostic report within a few hours of getting access. Happy to jump on a quick call if that helps move things faster. Looking forward to hearing from you.