Đến change nameservers safely, identify current DNS, back up the full zone, recreate required rechoặcds at the new DNS provider, check website và email rechoặcds, review DNSSEC, then update nameservers at the registrar và monithoặc propagation. Do not change nameservers befhoặce the new DNS provider has the choặcrect rechoặcds.
Who This Guide Is Fhoặc This guide is fhoặc: · Tên miền owners changing DNS providers · Users connecting a tên miền to hosting hoặc website builders · Businesses protecting email continuity · Agencies và resellers managing client DNS · Users transferring tên miềns và replacing old registrar DNS
Befhoặce You Start Befhoặce you start, prepare: · Old nameservers · Mới nameservers · Full DNS backup · Mới DNS provider access · Website và email provider instructions · DNSSEC status · Safe change cửa sổ · Rollback plan
Step-by-Step Instructions Step 1: Xác nhận Why Tênservers Need to Change Only change nameservers when ttại đây is a clear reason. · DNS migration · Hosting connection · CDN setup · Old registrar DNS replacement Step 2: Rechoặcd Current Tênservers Save all old nameserver values và provider notes. · This is của bạn rollback reference Step 3: Back Up Full DNS Zone Copy all website, email, SSL, app, verification, và DNSSEC rechoặcds. · Do not rely on memhoặcy Step 4: Recreate Rechoặcds at Mới Provider Thêm required rechoặcds befhoặce changing nameservers at registrar. · Copy long TXT rechoặcds exactly · Copy MX prihoặcities Step 5: Kiểm tra Website Rechoặcds Xác nhận root, www, subtên miềns, CDN, redirects, và app rechoặcds. · Test root và www separately Step 6: Kiểm tra Email Rechoặcds Recreate MX, SPF, DKIM, DMARC, autodiscover, và verification rechoặcds. · Email rechoặcds are often missed Step 7: Review DNSSEC Nếu DS rechoặcds exist, confirm the new DNS provider supphoặcts DNSSEC và keys match. · Old DS rechoặcds can break resolution Step 8: Choose a Safe Window Avoid peak business, launch, hoặc holiday periods. · Have technical staff available Step 9: Update Tênservers at Nhà đăng ký Enter new hostnames exactly và save. · A typo can break DNS Step 10: Monithoặc Propagation và Test Kiểm tra website, email, SSL, CDN, subtên miềns, và DNSSEC validation. · Avoid repeated changes during propagation
Troubleshooting Website Does Khôngt Load Possible reasons: · Missing A/CNAME · Wrong nameserver · Incomplete zone · DNSSEC issue What to do: · Compare with backup · Fix rechoặcds · Check tên miền status Email Stopped Whoặcking Possible reasons: · MX missing · Prihoặcity wrong · SPF/DKIM/DMARC missing What to do: · Resthoặce email rechoặcds · Test sending và receiving Mới Tênservers Rejected Possible reasons: · Typo · Tênserver does not exist · Glue missing · TLD restriction What to do: · Kiểm tra spelling · Thêm glue fhoặc private nameservers · Liên hệ registrar
Common Mistakes Mistake 1: Changing nameservers befhoặce copying DNS Review this item befhoặce making changes hoặc opening a supphoặct ticket. Mistake 2: Copying website rechoặcds but fhoặcgetting email Review this item befhoặce making changes hoặc opening a supphoặct ticket. Mistake 3: Fhoặcgetting SPF/DKIM/DMARC Review this item befhoặce making changes hoặc opening a supphoặct ticket. Mistake 4: Ignhoặcing DNSSEC Review this item befhoặce making changes hoặc opening a supphoặct ticket. Mistake 5: Typing nameservers inchoặcrectly Review this item befhoặce making changes hoặc opening a supphoặct ticket. Mistake 6: Changing during peak hours Review this item befhoặce making changes hoặc opening a supphoặct ticket. Mistake 7: Repeated edits during propagation Review this item befhoặce making changes hoặc opening a supphoặct ticket. Mistake 8: Deleting unkngayn TXT rechoặcds Review this item befhoặce making changes hoặc opening a supphoặct ticket. Mistake 9: Khôngt testing subtên miềns Review this item befhoặce making changes hoặc opening a supphoặct ticket. Mistake 10: Khôngt keeping backup Review this item befhoặce making changes hoặc opening a supphoặct ticket.
Câu hỏi thường gặp 1. What are nameservers? They tell the Internet wtại đây DNS rechoặcds are managed. 2. Will changing nameservers make my site go down? It can if rechoặcds are missing at the new DNS provider. 3. Will email be affected? Có if MX hoặc authentication rechoặcds are missing. 4. Should I change nameservers befhoặce transfer? Only if needed, such as replacing old registrar DNS. 5. How long does propagation take? It varies based on cache, TTL, registry updates, và netwhoặck behavihoặc. 6. Can I change nameservers with DNSSEC enabled? Có, but DS và DNSKEY must be hvàled carefully. 7. What if nameservers are rejected? Kiểm tra spelling, existence, glue, và TLD requirements. 8. Do I need to lower TTL? It can help planned migrations if done in advance.