ASN AS11377 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS11377?

AS11377 is listed under SendGrid, Inc..

What do peers, upstreams, and downstreams mean in ASN data?

Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.

What are routes and IP ranges for an ASN?

Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.

Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access the full ASN tables?

The page shows a preview of large ASN datasets. Use the page controls to load more rows, and upgrade to a paid plan for complete access.

AS11377 SendGrid, Inc. | IPGeolocation.io

ASN Lookup Tool

SendGrid, Inc. sendgrid.com

US 131 Routes

AS Data

AS11377

AS11377 – SendGrid, Inc.

AS Number	11377
AS Name	SENDGRID
Organization	SendGrid, Inc.(sendg-12)
Country	US
Website	sendgrid.com
Number of IPv4 Routes	131
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2012-06-28

ASN Intelligence API for production workflows

Use ASN data for AS11377 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
149.72.98.0/23	AS11377	SendGrid, Inc.	SendGrid, Inc.	512
159.183.229.0/24	AS11377	SendGrid, Inc.	Twilio SendGrid	256
167.89.126.0/23	AS11377	SendGrid, Inc.	SendGrid, Inc.	512
208.117.48.0/21	AS11377	SendGrid, Inc.	SendGrid, Inc.	2048
159.183.34.0/24	AS11377	SendGrid, Inc.	Twilio SendGrid	256
168.245.92.0/22	AS11377	SendGrid, Inc.	SendGrid, Inc.	1024
216.20.32.0/22	AS11377	SendGrid, Inc.	Twilio SendGrid	1024
159.183.238.0/24	AS11377	SendGrid, Inc.	Twilio SendGrid	256
159.183.192.0/19	AS11377	SendGrid, Inc.	Twilio SendGrid	8192
216.20.80.0/22	AS11377	SendGrid, Inc.	Quaboag Regional School District	1024

Raw Whois Response

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#


ASNumber:       11377
ASName:         SENDGRID
ASHandle:       AS11377
RegDate:        2012-06-28
Updated:        2012-06-28    
Ref:            https://rdap.arin.net/registry/autnum/11377


OrgName:        SendGrid, Inc.
OrgId:          SENDG-12
Address:        Twilio, Inc.
Address:        1801 California Street
Address:        Suite 500
City:           Denver
StateProv:      CO
PostalCode:     80202
Country:        US
RegDate:        2012-06-14
Updated:        2025-06-12
Comment:        http://www.sendgrid.com
Comment:        
Comment:        (888) 985-8363
Comment:        Support hours: M-F, 7a-7p Mountain Time.
Ref:            https://rdap.arin.net/registry/entity/SENDG-12


OrgAbuseHandle: ABUSE3074-ARIN
OrgAbuseName:   Abuse Desk
OrgAbusePhone:  +1-888-985-7363 
OrgAbuseEmail:  abuse@sendgrid.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE3074-ARIN

OrgTechHandle: TSNO-ARIN
OrgTechName:   Twilio SendGrid Network Operations
OrgTechPhone:  +1-888-985-7363 
OrgTechEmail:  netops+arin@sendgrid.com
OrgTechRef:    https://rdap.arin.net/registry/entity/TSNO-ARIN

OrgTechHandle: TALSM-ARIN
OrgTechName:   Talsma, Jack 
OrgTechPhone:  +1-415-390-2337 
OrgTechEmail:  netops+arin@sendgrid.com
OrgTechRef:    https://rdap.arin.net/registry/entity/TALSM-ARIN


#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#

Parsed Whois Response

Peers

AS Number	Description	Country
AS7195	EDGEUNO S.A.S	CO
AS3549	Level 3 Communications, Inc. (GBLX)	US
AS3737	PenTeleData Inc.	US
AS6939	Hurricane Electric LLC	US
AS6204	ZET.NET IP Transit	RO
AS10242	US Internet Corp	US
AS14537	Continent 8 LLC	US
AS37468	Angola Cables	AO
AS199524	G-Core Labs S.A.	LU
AS14907	Wikimedia Foundation Inc.	US

Upstreams

AS Number	Description	Country
AS7195	EDGEUNO S.A.S	CO
AS8220	COLT Technology Services Group Limited	GB
AS6939	Hurricane Electric LLC	US
AS6204	ZET.NET IP Transit	RO
AS6057	Administracion Nacional de Telecomunicaciones	UY
AS2914	NTT America, Inc.	US
AS37468	Angola Cables	AO
AS13786	Seabras 1 USA, LLC	US
AS60171	AFR IX TELECOM S.A.	ES
AS1299	Arelion Sweden AB	SE