21718 NW-NATURAL-GAS - Northwest Natural Gas, US
Adjacency: 2 Upstream: 2 Downstream: 0
Upstream Adjacent AS list
AS701 UUNET - Verizon Business, US
AS33490 COMCAST-33490 - Comcast Cable Communications, LLC, US
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 32373 AS21718 ORIGIN Originate: 1280 /21.68 Transit: 0 /0.00 NW-NATURAL-GAS - Northwest Natural Gas, US
Aggregation Suggestions
Filter: Aggregates, Specifics
This report does not take into account conditions local to each origin AS in terms of policy or traffic engineering requirements, so this is an approximate guideline as to aggregation possibilities.
Rank AS AS Name Current Wthdw Aggte Annce Redctn % 21098 AS21718 NW-NATURAL-GAS - Northwest Natural Gas, US 5 2 1 4 1 20.00% Prefix AS Path Aggregation Suggestion 192.122.243.0/24 4777 2497 701 21718 192.122.244.0/23 4777 2516 7922 33490 21718 + Announce - aggregate of 192.122.244.0/24 (4777 2516 7922 33490 21718) and 192.122.245.0/24 (4777 2516 7922 33490 21718) 192.122.244.0/24 4777 2516 7922 33490 21718 - Withdrawn - aggregated with 192.122.245.0/24 (4777 2516 7922 33490 21718) 192.122.245.0/24 4777 2516 7922 33490 21718 - Withdrawn - aggregated with 192.122.244.0/24 (4777 2516 7922 33490 21718) 192.122.246.0/24 4777 2497 701 21718 192.122.247.0/24 4777 2516 7922 33490 21718
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS21718 4 More Specifics 5 Total Advertisements NW-NATURAL-GAS - Northwest Natural Gas, US
192.122.244.0/24 192.122.244.0/22
192.122.245.0/24 192.122.244.0/22
192.122.246.0/24 192.122.244.0/22
192.122.247.0/24 192.122.244.0/22
whois: 402332
IANA has recorded AS21718 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS21718\n
#
# 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: 21718
ASName: NW-NATURAL-GAS
ASHandle: AS21718
RegDate: 2001-06-13
Updated: 2025-09-04
Ref: https://rdap.arin.net/registry/autnum/21718
OrgName: Northwest Natural Gas
OrgId: NNG-4
Address: 250 SW Taylor St
City: Portland
StateProv: OR
PostalCode: 97204
Country: US
RegDate: 2001-06-13
Updated: 2025-08-29
Ref: https://rdap.arin.net/registry/entity/NNG-4
OrgNOCHandle: RHA368-ARIN
OrgNOCName: Andal, Rowell H
OrgNOCPhone: +1-503-610-7743
OrgNOCEmail: rowell.andal@nwnatural.com
OrgNOCRef: https://rdap.arin.net/registry/entity/RHA368-ARIN
OrgNOCHandle: HARLO39-ARIN
OrgNOCName: Harlow, Bryan
OrgNOCPhone: +1-360-355-0435
OrgNOCEmail: bryan.harlow@nwnatural.com
OrgNOCRef: https://rdap.arin.net/registry/entity/HARLO39-ARIN
OrgTechHandle: HARLO39-ARIN
OrgTechName: Harlow, Bryan
OrgTechPhone: +1-360-355-0435
OrgTechEmail: bryan.harlow@nwnatural.com
OrgTechRef: https://rdap.arin.net/registry/entity/HARLO39-ARIN
OrgTechHandle: RHA368-ARIN
OrgTechName: Andal, Rowell H
OrgTechPhone: +1-503-610-7743
OrgTechEmail: rowell.andal@nwnatural.com
OrgTechRef: https://rdap.arin.net/registry/entity/RHA368-ARIN
OrgAbuseHandle: HARLO39-ARIN
OrgAbuseName: Harlow, Bryan
OrgAbusePhone: +1-360-355-0435
OrgAbuseEmail: bryan.harlow@nwnatural.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/HARLO39-ARIN
OrgAbuseHandle: RHA368-ARIN
OrgAbuseName: Andal, Rowell H
OrgAbusePhone: +1-503-610-7743
OrgAbuseEmail: rowell.andal@nwnatural.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/RHA368-ARIN
OrgRoutingHandle: HARLO39-ARIN
OrgRoutingName: Harlow, Bryan
OrgRoutingPhone: +1-360-355-0435
OrgRoutingEmail: bryan.harlow@nwnatural.com
OrgRoutingRef: https://rdap.arin.net/registry/entity/HARLO39-ARIN
OrgRoutingHandle: RHA368-ARIN
OrgRoutingName: Andal, Rowell H
OrgRoutingPhone: +1-503-610-7743
OrgRoutingEmail: rowell.andal@nwnatural.com
OrgRoutingRef: https://rdap.arin.net/registry/entity/RHA368-ARIN
OrgDNSHandle: RHA368-ARIN
OrgDNSName: Andal, Rowell H
OrgDNSPhone: +1-503-610-7743
OrgDNSEmail: rowell.andal@nwnatural.com
OrgDNSRef: https://rdap.arin.net/registry/entity/RHA368-ARIN
OrgDNSHandle: HARLO39-ARIN
OrgDNSName: Harlow, Bryan
OrgDNSPhone: +1-360-355-0435
OrgDNSEmail: bryan.harlow@nwnatural.com
OrgDNSRef: https://rdap.arin.net/registry/entity/HARLO39-ARIN
RNOCHandle: RHA368-ARIN
RNOCName: Andal, Rowell H
RNOCPhone: +1-503-610-7743
RNOCEmail: rowell.andal@nwnatural.com
RNOCRef: https://rdap.arin.net/registry/entity/RHA368-ARIN
RNOCHandle: HARLO39-ARIN
RNOCName: Harlow, Bryan
RNOCPhone: +1-360-355-0435
RNOCEmail: bryan.harlow@nwnatural.com
RNOCRef: https://rdap.arin.net/registry/entity/HARLO39-ARIN
RTechHandle: RHA368-ARIN
RTechName: Andal, Rowell H
RTechPhone: +1-503-610-7743
RTechEmail: rowell.andal@nwnatural.com
RTechRef: https://rdap.arin.net/registry/entity/RHA368-ARIN
RAbuseHandle: RHA368-ARIN
RAbuseName: Andal, Rowell H
RAbusePhone: +1-503-610-7743
RAbuseEmail: rowell.andal@nwnatural.com
RAbuseRef: https://rdap.arin.net/registry/entity/RHA368-ARIN
RAbuseHandle: HARLO39-ARIN
RAbuseName: Harlow, Bryan
RAbusePhone: +1-360-355-0435
RAbuseEmail: bryan.harlow@nwnatural.com
RAbuseRef: https://rdap.arin.net/registry/entity/HARLO39-ARIN
RTechHandle: HARLO39-ARIN
RTechName: Harlow, Bryan
RTechPhone: +1-360-355-0435
RTechEmail: bryan.harlow@nwnatural.com
RTechRef: https://rdap.arin.net/registry/entity/HARLO39-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.
#