diff --git a/providers/dns/ionos/ionos.go b/providers/dns/ionos/ionos.go
index 6a778f2b..fc322c89 100644
--- a/providers/dns/ionos/ionos.go
+++ b/providers/dns/ionos/ionos.go
@@ -113,14 +113,15 @@ func (d *DNSProvider) Present(domain, _, keyAuth string) error {
 		return fmt.Errorf("ionos: failed to get zones: %w", err)
 	}
 
-	// TODO(ldez) replace domain by FQDN to follow CNAME.
-	zone := findZone(zones, domain)
+	name := dns01.UnFqdn(info.EffectiveFQDN)
+
+	zone := findZone(zones, name)
 	if zone == nil {
 		return errors.New("ionos: no matching zone found for domain")
 	}
 
 	filter := &internal.RecordsFilter{
-		Suffix:     dns01.UnFqdn(info.EffectiveFQDN),
+		Suffix:     name,
 		RecordType: "TXT",
 	}
 
@@ -130,7 +131,7 @@ func (d *DNSProvider) Present(domain, _, keyAuth string) error {
 	}
 
 	records = append(records, internal.Record{
-		Name:    dns01.UnFqdn(info.EffectiveFQDN),
+		Name:    name,
 		Content: info.Value,
 		TTL:     d.config.TTL,
 		Type:    "TXT",
@@ -155,14 +156,15 @@ func (d *DNSProvider) CleanUp(domain, _, keyAuth string) error {
 		return fmt.Errorf("ionos: failed to get zones: %w", err)
 	}
 
-	// TODO(ldez) replace domain by FQDN to follow CNAME.
-	zone := findZone(zones, domain)
+	name := dns01.UnFqdn(info.EffectiveFQDN)
+
+	zone := findZone(zones, name)
 	if zone == nil {
 		return errors.New("ionos: no matching zone found for domain")
 	}
 
 	filter := &internal.RecordsFilter{
-		Suffix:     dns01.UnFqdn(info.EffectiveFQDN),
+		Suffix:     name,
 		RecordType: "TXT",
 	}
 
@@ -172,7 +174,7 @@ func (d *DNSProvider) CleanUp(domain, _, keyAuth string) error {
 	}
 
 	for _, record := range records {
-		if record.Name == dns01.UnFqdn(info.EffectiveFQDN) && record.Content == strconv.Quote(info.Value) {
+		if record.Name == name && record.Content == strconv.Quote(info.Value) {
 			err = d.client.RemoveRecord(ctx, zone.ID, record.ID)
 			if err != nil {
 				return fmt.Errorf("ionos: failed to remove record (zone=%s, record=%s): %w", zone.ID, record.ID, err)