AS Number
AS18830
AS Name
HMH-18830
Org Name
Houghton Mifflin Harcourt Publishing Company
Registry

arin

RegDate

2009-05-21

Updated

2020-04-07

AS18830 Looking Glass
IPv4Prefixes

3

IPv6Prefixes

0

IPv4 NUMs

1,024

IPv6 NUMs(/64)

0

1,024 IPv4 Addresses
CIDR Description IP Num
208.85.124.0/24
IRR InValid
Houghton Mifflin Harcourt Publishing Company 256
208.85.125.0/24
IRR InValid
Houghton Mifflin Harcourt Publishing Company 256
208.85.126.0/23
IRR Valid
Houghton Mifflin Harcourt Publishing Company 512
AS Description Country/Region IPv4 NUMs IPv6 NUMs IPv4 IPv6
AS14742 INTERNAP-BLOCK-4 - Internap Holding LLC, US United States 66,304 4,294,967,296 IPv4 IPv4
AS19024 INTERNAP-BLK5 - Internap Holding LLC, US United States 60,672 12,884,901,888 IPv4 IPv4
IP Address Domain NUMs Domains
208.85.124.11 1 boston.vpn.hmhco.com
208.85.124.29 1 wdc.sslvpn.hmhpub.com
208.85.124.39 1 ftp.thinkcentral.com
208.85.124.66 2 harcourte-learning.com
208.85.124.85 1 www.iloli.com
ASNumber:       18830
ASName:         HMH-18830
ASHandle:       AS18830
RegDate:        2007-12-19
Updated:        2015-12-23    
Ref:            https://rdap.arin.net/registry/autnum/18830


OrgName:        Houghton Mifflin Harcourt Publishing Company
OrgId:          HOUGH-3
Address:        125 High Street
City:           Boston
StateProv:      MA
PostalCode:     02110
Country:        US
RegDate:        2009-05-21
Updated:        2020-04-07
Ref:            https://rdap.arin.net/registry/entity/HOUGH-3


OrgAbuseHandle: NETWO380-ARIN
OrgAbuseName:   Network Manager
OrgAbusePhone:  +1-617-351-5000 
OrgAbuseEmail:  netadmin@hmhco.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NETWO380-ARIN

OrgTechHandle: NETWO380-ARIN
OrgTechName:   Network Manager
OrgTechPhone:  +1-617-351-5000 
OrgTechEmail:  netadmin@hmhco.com
OrgTechRef:    https://rdap.arin.net/registry/entity/NETWO380-ARIN