diff --git a/sanic/exceptions.py b/sanic/exceptions.py
index a98c9e14..370882be 100644
--- a/sanic/exceptions.py
+++ b/sanic/exceptions.py
@@ -1,8 +1,3 @@
-from .response import text, html
-from .log import log
-from traceback import format_exc, extract_tb
-import sys
-
 TRACEBACK_STYLE = '''
     <style>
         body {
@@ -138,6 +133,10 @@ class PayloadTooLarge(SanicException):
     status_code = 413
 
 
+class HeaderNotFound(SanicException):
+    status_code = 400
+
+
 class ContentRangeError(SanicException):
     status_code = 416
 
@@ -149,70 +148,5 @@ class ContentRangeError(SanicException):
         }
 
 
-class Handler:
-    handlers = None
-
-    def __init__(self):
-        self.handlers = {}
-        self.debug = False
-
-    def _render_traceback_html(self, exception, request):
-        exc_type, exc_value, tb = sys.exc_info()
-        frames = extract_tb(tb)
-
-        frame_html = []
-        for frame in frames:
-            frame_html.append(TRACEBACK_LINE_HTML.format(frame))
-
-        return TRACEBACK_WRAPPER_HTML.format(
-            style=TRACEBACK_STYLE,
-            exc_name=exc_type.__name__,
-            exc_value=exc_value,
-            frame_html=''.join(frame_html),
-            uri=request.url)
-
-    def add(self, exception, handler):
-        self.handlers[exception] = handler
-
-    def response(self, request, exception):
-        """
-        Fetches and executes an exception handler and returns a response object
-
-        :param request: Request
-        :param exception: Exception to handle
-        :return: Response object
-        """
-        handler = self.handlers.get(type(exception), self.default)
-        try:
-            response = handler(request=request, exception=exception)
-        except:
-            log.error(format_exc())
-            if self.debug:
-                response_message = (
-                    'Exception raised in exception handler "{}" '
-                    'for uri: "{}"\n{}').format(
-                        handler.__name__, request.url, format_exc())
-                log.error(response_message)
-                return text(response_message, 500)
-            else:
-                return text('An error occurred while handling an error', 500)
-        return response
-
-    def default(self, request, exception):
-        log.error(format_exc())
-        if issubclass(type(exception), SanicException):
-            return text(
-                'Error: {}'.format(exception),
-                status=getattr(exception, 'status_code', 500),
-                headers=getattr(exception, 'headers', dict())
-            )
-        elif self.debug:
-            html_output = self._render_traceback_html(exception, request)
-
-            response_message = (
-                'Exception occurred while handling uri: "{}"\n{}'.format(
-                    request.url, format_exc()))
-            log.error(response_message)
-            return html(html_output, status=500)
-        else:
-            return html(INTERNAL_SERVER_ERROR_HTML, status=500)
+class InvalidRangeType(ContentRangeError):
+    pass
diff --git a/sanic/handlers.py b/sanic/handlers.py
new file mode 100644
index 00000000..c78a1488
--- /dev/null
+++ b/sanic/handlers.py
@@ -0,0 +1,127 @@
+from .response import text, html
+from .log import log
+from traceback import format_exc, extract_tb
+import sys
+from .exceptions import SanicException, HeaderNotFound, InvalidRangeType
+from .exceptions import INTERNAL_SERVER_ERROR_HTML, TRACEBACK_LINE_HTML
+from .exceptions import TRACEBACK_STYLE, TRACEBACK_WRAPPER_HTML
+from .exceptions import ContentRangeError
+
+
+class ErrorHandler:
+    handlers = None
+
+    def __init__(self):
+        self.handlers = {}
+        self.debug = False
+
+    def _render_traceback_html(self, exception, request):
+        exc_type, exc_value, tb = sys.exc_info()
+        frames = extract_tb(tb)
+
+        frame_html = []
+        for frame in frames:
+            frame_html.append(TRACEBACK_LINE_HTML.format(frame))
+
+        return TRACEBACK_WRAPPER_HTML.format(
+            style=TRACEBACK_STYLE,
+            exc_name=exc_type.__name__,
+            exc_value=exc_value,
+            frame_html=''.join(frame_html),
+            uri=request.url)
+
+    def add(self, exception, handler):
+        self.handlers[exception] = handler
+
+    def response(self, request, exception):
+        """
+        Fetches and executes an exception handler and returns a response object
+
+        :param request: Request
+        :param exception: Exception to handle
+        :return: Response object
+        """
+        handler = self.handlers.get(type(exception), self.default)
+        try:
+            response = handler(request=request, exception=exception)
+        except Exception:
+            log.error(format_exc())
+            if self.debug:
+                response_message = (
+                    'Exception raised in exception handler "{}" '
+                    'for uri: "{}"\n{}').format(
+                        handler.__name__, request.url, format_exc())
+                log.error(response_message)
+                return text(response_message, 500)
+            else:
+                return text('An error occurred while handling an error', 500)
+        return response
+
+    def default(self, request, exception):
+        log.error(format_exc())
+        if issubclass(type(exception), SanicException):
+            return text(
+                'Error: {}'.format(exception),
+                status=getattr(exception, 'status_code', 500),
+                headers=getattr(exception, 'headers', dict())
+            )
+        elif self.debug:
+            html_output = self._render_traceback_html(exception, request)
+
+            response_message = (
+                'Exception occurred while handling uri: "{}"\n{}'.format(
+                    request.url, format_exc()))
+            log.error(response_message)
+            return html(html_output, status=500)
+        else:
+            return html(INTERNAL_SERVER_ERROR_HTML, status=500)
+
+
+class ContentRangeHandler:
+    """
+    This class is for parsing the request header
+    """
+    __slots__ = ('start', 'end', 'size', 'total', 'headers')
+
+    def __init__(self, request, stats):
+        self.total = stats.st_size
+        _range = request.headers.get('Range')
+        if _range is None:
+            raise HeaderNotFound('Range Header Not Found')
+        unit, _, value = tuple(map(str.strip, _range.partition('=')))
+        if unit != 'bytes':
+            raise InvalidRangeType(
+                '%s is not a valid Range Type' % (unit,), self)
+        start_b, _, end_b = tuple(map(str.strip, value.partition('-')))
+        try:
+            self.start = int(start_b) if start_b else None
+        except ValueError:
+            raise ContentRangeError(
+                '\'%s\' is invalid for Content Range' % (start_b,), self)
+        try:
+            self.end = int(end_b) if end_b else None
+        except ValueError:
+            raise ContentRangeError(
+                '\'%s\' is invalid for Content Range' % (end_b,), self)
+        if self.end is None:
+            if self.start is None:
+                raise ContentRangeError(
+                    'Invalid for Content Range parameters', self)
+            else:
+                # this case represents `Content-Range: bytes 5-`
+                self.end = self.total
+        else:
+            if self.start is None:
+                # this case represents `Content-Range: bytes -5`
+                self.start = self.total - self.end
+                self.end = self.total
+        if self.start >= self.end:
+            raise ContentRangeError(
+                'Invalid for Content Range parameters', self)
+        self.size = self.end - self.start
+        self.headers = {
+            'Content-Range': "bytes %s-%s/%s" % (
+                self.start, self.end, self.total)}
+
+    def __bool__(self):
+        return self.size > 0
diff --git a/sanic/response.py b/sanic/response.py
index 287eec26..41d2167d 100644
--- a/sanic/response.py
+++ b/sanic/response.py
@@ -140,38 +140,6 @@ class HTTPResponse:
         return self._cookies
 
 
-class ContentRangeHandler:
-    """
-    This class is for parsing the request header
-    """
-    __slots__ = ('start', 'end', 'size', 'total', 'headers')
-
-    def __init__(self, request, stats):
-        self.size = self.start = 0
-        self.end = None
-        self.headers = dict()
-        self.total = stats.st_size
-        _range = request.headers.get('Range')
-        if _range is None:
-            return
-        unit, _, value = tuple(map(str.strip, _range.partition('=')))
-        if unit != 'bytes':
-            return
-        start_b, _, end_b = tuple(map(str.strip, value.partition('-')))
-        try:
-            self.start = int(start_b) if start_b else 0
-            self.end = int(end_b) if end_b else 0
-        except ValueError:
-            self.start = self.end = 0
-            return
-        self.size = self.end - self.start
-        self.headers['Content-Range'] = "bytes %s-%s/%s" % (
-            self.start, self.end, self.total)
-
-    def __bool__(self):
-        return self.size != 0
-
-
 def json(body, status=200, headers=None, **kwargs):
     """
     Returns response object with body in json format.
diff --git a/sanic/sanic.py b/sanic/sanic.py
index 8b9dbc78..4dd487cc 100644
--- a/sanic/sanic.py
+++ b/sanic/sanic.py
@@ -8,7 +8,7 @@ from traceback import format_exc
 import logging
 
 from .config import Config
-from .exceptions import Handler
+from .handlers import ErrorHandler
 from .log import log
 from .response import HTTPResponse
 from .router import Router
@@ -36,7 +36,7 @@ class Sanic:
             name = getmodulename(frame_records[1])
         self.name = name
         self.router = router or Router()
-        self.error_handler = error_handler or Handler()
+        self.error_handler = error_handler or ErrorHandler()
         self.config = Config()
         self.request_middleware = deque()
         self.response_middleware = deque()
diff --git a/sanic/static.py b/sanic/static.py
index e0255334..14a20464 100644
--- a/sanic/static.py
+++ b/sanic/static.py
@@ -1,12 +1,15 @@
-from aiofiles.os import stat
+from mimetypes import guess_type
 from os import path
 from re import sub
 from time import strftime, gmtime
-from mimetypes import guess_type
 from urllib.parse import unquote
 
+from aiofiles.os import stat
+
 from .exceptions import FileNotFound, InvalidUsage, ContentRangeError
-from .response import file, HTTPResponse, ContentRangeHandler
+from .exceptions import HeaderNotFound
+from .response import file, HTTPResponse
+from .handlers import ContentRangeHandler
 
 
 def register(app, uri, file_or_directory, pattern,
@@ -56,30 +59,27 @@ def register(app, uri, file_or_directory, pattern,
             stats = None
             if use_modified_since:
                 stats = await stat(file_path)
-                modified_since = strftime('%a, %d %b %Y %H:%M:%S GMT',
-                                          gmtime(stats.st_mtime))
+                modified_since = strftime(
+                    '%a, %d %b %Y %H:%M:%S GMT', gmtime(stats.st_mtime))
                 if request.headers.get('If-Modified-Since') == modified_since:
                     return HTTPResponse(status=304)
                 headers['Last-Modified'] = modified_since
             _range = None
             if use_content_range:
+                _range = None
                 if not stats:
                     stats = await stat(file_path)
                 headers['Accept-Ranges'] = 'bytes'
                 headers['Content-Length'] = str(stats.st_size)
                 if request.method != 'HEAD':
-                    _range = ContentRangeHandler(request, stats)
-                    # If the start byte is greater than the size
-                    # of the entire file or if the end is
-                    if _range.start >= _range.total or _range.end == 0:
-                        raise ContentRangeError('Content-Range malformed',
-                                                _range)
-                    if _range.start == 0 and _range.size == 0:
-                        _range = None
+                    try:
+                        _range = ContentRangeHandler(request, stats)
+                    except HeaderNotFound:
+                        pass
                     else:
-                        headers['Content-Length'] = str(_range.size)
-                        for k, v in _range.headers.items():
-                            headers[k] = v
+                        del headers['Content-Length']
+                        for key, value in _range.headers.items():
+                            headers[key] = value
             if request.method == 'HEAD':
                 return HTTPResponse(
                     headers=headers,
diff --git a/tests/test_static.py b/tests/test_static.py
index 601b0deb..6b7647d0 100644
--- a/tests/test_static.py
+++ b/tests/test_static.py
@@ -86,8 +86,43 @@ def test_static_content_range_correct(static_file_path, static_file_content):
     assert response.status == 200
     assert 'Content-Length' in response.headers
     assert 'Content-Range' in response.headers
-    assert int(response.headers['Content-Length']) == 19-12
-    assert response.body == bytes(static_file_content)[12:19]
+    static_content = bytes(static_file_content)[12:19]
+    assert int(response.headers['Content-Length']) == len(static_content)
+    assert response.body == static_content
+
+
+def test_static_content_range_front(static_file_path, static_file_content):
+    app = Sanic('test_static')
+    app.static('/testing.file', static_file_path, use_content_range=True)
+
+    headers = {
+        'Range': 'bytes=12-'
+    }
+    request, response = sanic_endpoint_test(
+        app, uri='/testing.file', headers=headers)
+    assert response.status == 200
+    assert 'Content-Length' in response.headers
+    assert 'Content-Range' in response.headers
+    static_content = bytes(static_file_content)[12:]
+    assert int(response.headers['Content-Length']) == len(static_content)
+    assert response.body == static_content
+
+
+def test_static_content_range_back(static_file_path, static_file_content):
+    app = Sanic('test_static')
+    app.static('/testing.file', static_file_path, use_content_range=True)
+
+    headers = {
+        'Range': 'bytes=-12'
+    }
+    request, response = sanic_endpoint_test(
+        app, uri='/testing.file', headers=headers)
+    assert response.status == 200
+    assert 'Content-Length' in response.headers
+    assert 'Content-Range' in response.headers
+    static_content = bytes(static_file_content)[-12:]
+    assert int(response.headers['Content-Length']) == len(static_content)
+    assert response.body == static_content
 
 
 def test_static_content_range_empty(static_file_path, static_file_content):