diff --git a/go.mod b/go.mod
index 739002d..9e0f3e5 100644
--- a/go.mod
+++ b/go.mod
@@ -1,3 +1,3 @@
-module go-abuseipdb
+module sst.rievo.dev/go-abuseipdb
 
 go 1.22
diff --git a/pkg/abuseipdb/client.go b/pkg/abuseipdb/client.go
index ef44a7a..8140a05 100644
--- a/pkg/abuseipdb/client.go
+++ b/pkg/abuseipdb/client.go
@@ -3,14 +3,18 @@ package abuseipdb
 import (
 	"bytes"
 	"context"
+	"encoding/csv"
 	"encoding/json"
+	"errors"
 	"fmt"
-	"go-abuseipdb/pkg/abuseipdb/rate"
 	"html"
 	"io"
+	"mime/multipart"
 	"net"
 	"net/http"
 	"net/url"
+	"reflect"
+	"sst.rievo.dev/go-abuseipdb/pkg/abuseipdb/rate"
 	"strconv"
 	"strings"
 	"time"
@@ -59,7 +63,7 @@ func (c *Client) initialize() {
 	}
 }
 
-func (c *Client) NewRequest(method, urlStr string, parameter map[string]string) (*http.Request, error) {
+func (c *Client) NewRequest(method, urlStr string, parameter map[string]string, body io.Reader) (*http.Request, error) {
 	if !strings.HasSuffix(c.BaseURL.Path, "/") {
 		return nil, fmt.Errorf("BaseURL must have a trailing slash, but %q does not", c.BaseURL)
 	}
@@ -69,7 +73,7 @@ func (c *Client) NewRequest(method, urlStr string, parameter map[string]string)
 		return nil, err
 	}
 
-	req, err := http.NewRequest(method, u.String(), nil)
+	req, err := http.NewRequest(method, u.String(), body)
 	if err != nil {
 		return nil, err
 	}
@@ -181,7 +185,7 @@ func (c *Client) Check(ctx context.Context, ip net.IP, opts *CheckOptions) (*Che
 		}
 	}
 
-	req, err := c.NewRequest(http.MethodGet, endpoint, parameters)
+	req, err := c.NewRequest(http.MethodGet, endpoint, parameters, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -240,7 +244,7 @@ func (c *Client) Reports(ctx context.Context, ip net.IP, opts *ReportsOptions) (
 		}
 	}
 
-	req, err := c.NewRequest(http.MethodGet, endpoint, parameters)
+	req, err := c.NewRequest(http.MethodGet, endpoint, parameters, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -299,7 +303,7 @@ func (c *Client) Blacklist(ctx context.Context, opts *BlacklistOptions) (*Blackl
 
 	parameters := handleBlacklistOptions(opts)
 
-	req, err := c.NewRequest(http.MethodGet, endpoint, parameters)
+	req, err := c.NewRequest(http.MethodGet, endpoint, parameters, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -317,7 +321,7 @@ func (c *Client) BlacklistPlain(ctx context.Context, opts *BlacklistOptions) (io
 
 	parameters := handleBlacklistOptions(opts)
 
-	req, err := c.NewRequest(http.MethodGet, endpoint, parameters)
+	req, err := c.NewRequest(http.MethodGet, endpoint, parameters, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -373,7 +377,7 @@ func (c *Client) Report(ctx context.Context, ip net.IP, opts *ReportOptions) (*R
 		}
 	}
 
-	req, err := c.NewRequest(http.MethodGet, endpoint, parameters)
+	req, err := c.NewRequest(http.MethodGet, endpoint, parameters, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -421,7 +425,7 @@ func (c *Client) CheckBlock(ctx context.Context, ipnNet net.IPNet, opts *CheckBl
 		}
 	}
 
-	req, err := c.NewRequest(http.MethodGet, endpoint, parameters)
+	req, err := c.NewRequest(http.MethodGet, endpoint, parameters, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -436,11 +440,85 @@ func (c *Client) CheckBlock(ctx context.Context, ipnNet net.IPNet, opts *CheckBl
 
 type BulkReportData struct {
 	IpAddress  string    `csv:"IP"`
-	Categories []string  `csv:"Categories"`
+	Categories []int     `csv:"Categories"`
 	ReportDate time.Time `csv:"ReportDate"`
 	Comment    string    `csv:"Comment"`
 }
 
+type BulkReportDatas []BulkReportData
+
+func (b *BulkReportDatas) getHeaders() []string {
+	if b == nil || len(*b) == 0 {
+		return nil
+	}
+	val := reflect.ValueOf((*b)[0])
+	var headers []string
+	for i := 0; i < val.Type().NumField(); i++ {
+		t := val.Type().Field(i)
+		fieldName := t.Name
+
+		jsonTag := t.Tag.Get("csv")
+		parts := strings.Split(jsonTag, ",")
+		name := parts[0]
+		if name == "" {
+			name = fieldName
+		}
+		headers = append(headers, name)
+	}
+	return headers
+}
+
+func (b *BulkReportDatas) toSlice() [][]string {
+	var slice [][]string
+	if b == nil || len(*b) == 0 {
+		return nil
+	}
+	for _, data := range *b {
+		categories := make([]string, len(data.Categories))
+		for i, category := range data.Categories {
+			categories[i] = strconv.Itoa(category)
+		}
+		slice = append(slice, []string{
+			data.IpAddress,
+			strings.Join(categories, ","),
+			data.ReportDate.Format(time.RFC3339),
+			data.Comment,
+		})
+	}
+	return slice
+}
+
+func (b *BulkReportDatas) Csv() io.Reader {
+	result := &bytes.Buffer{}
+	writer := csv.NewWriter(result)
+
+	err := writer.WriteAll(append([][]string{b.getHeaders()}, b.toSlice()...))
+	if err != nil {
+		return nil
+	}
+
+	return result
+}
+
+func (b *BulkReportDatas) validate() error {
+	if b == nil || len(*b) == 0 {
+		return nil
+	}
+
+	for i, data := range *b {
+		if len(data.Categories) == 0 {
+			return fmt.Errorf("no categories found in BulkReportDatas entry %d", i)
+		}
+		if data.ReportDate.IsZero() {
+			return fmt.Errorf("no report date found in BulkReportDatas entry %d", i)
+		}
+		if len(data.Comment) > 1_024 {
+			return fmt.Errorf("comment is too long (%d bytes) for entry %d", len(data.Comment), i)
+		}
+	}
+	return nil
+}
+
 type BulkReportResult struct {
 	Data struct {
 		SavedReports   int `json:"savedReports"`
@@ -452,10 +530,43 @@ type BulkReportResult struct {
 	} `json:"data"`
 }
 
-func (c *Client) BulkReport(ctx context.Context, data *BulkReportData) (*BulkReportResult, error) {
-	//var endpoint = "bulk-report"
+func (c *Client) BulkReport(ctx context.Context, data *BulkReportDatas) (*BulkReportResult, error) {
+	var endpoint = "bulk-report"
 
-	return nil, fmt.Errorf("not implemented")
+	if data == nil || len(*data) == 0 {
+		return nil, errors.New("bulk report: no data")
+	}
+	if err := data.validate(); err != nil {
+		return nil, err
+	}
+	csvData := data.Csv()
+	if csvData == nil {
+		return nil, errors.New("bulk report: no csv data")
+	}
+
+	var requestBody bytes.Buffer
+	writer := multipart.NewWriter(&requestBody)
+	formFile, err := writer.CreateFormFile("csv", "data.csv")
+	if err != nil {
+		return nil, err
+	}
+	_, err = io.Copy(formFile, csvData)
+	if err != nil {
+		return nil, err
+	}
+	writer.Close()
+	req, err := c.NewRequest(http.MethodGet, endpoint, nil, &requestBody)
+	if err != nil {
+		return nil, err
+	}
+	req.Header.Add("Content-Type", writer.FormDataContentType())
+
+	var result *BulkReportResult
+	err = c.Do(ctx, req, &result)
+	if err != nil {
+		return nil, err
+	}
+	return result, nil
 }
 
 type ClearAddressData struct {
@@ -471,7 +582,7 @@ func (c *Client) ClearAddress(ctx context.Context, ip net.IP) (*ClearAddressData
 		"ipAddress": ipAddress,
 	}
 
-	req, err := c.NewRequest(http.MethodPost, endpoint, parameters)
+	req, err := c.NewRequest(http.MethodPost, endpoint, parameters, nil)
 	if err != nil {
 		return nil, err
 	}