Frequently asked questions about RespOrgs

Short for Responsible Organization. The entity registered with Somos (the national toll-free number registry) that manages a specific toll-free number. Every working toll-free number in North America is controlled by exactly one RespOrg at any given time — the RespOrg can activate it, release it, transfer it, or let it drop into disconnect.

RespOrgs aren't necessarily the phone carrier that actually connects your call. They're the industry-facing layer above the carriers. Some RespOrgs are carriers themselves (AT&T, Verizon, Twilio, Bandwidth). Others are resellers, aggregators, or specialists that make a living reserving and brokering numbers.

Somos is the nonprofit that operates the toll-free registry under authority from the FCC. Every RespOrg interacts with Somos to reserve, activate, transfer, and disconnect toll-free numbers. Somos publishes a monthly "Number Status Report" which is the source data for all of the analysis on this site.

• WORKING — actively in service, reachable when you dial it.
• TRANSIT — mid-transfer between RespOrgs (brief intermediate state).
• DISCONN — the number was released from service and is now aging in a pool.
• RESERVED — held for future activation, not yet in service.
• SPARE — unassigned. Available for any RespOrg to claim from Somos's pool. (Not shown in snapshots — it's the absence of an active status.)
• UNAVAIL / ASSIGNED — rare edge states.

The toll-free prefixes were released over time as the earlier ones filled up. Oldest first:

• 800 — introduced 1966. The original and still the most valuable.
• 888 — 1996
• 877 — 1998
• 866 — 2000
• 855 — 2010
• 844 — 2013
• 833 — 2017. Still actively being released — a single 850,000-number block was opened in December 2023.

Behind the scenes, Somos is expected to open 822 next when 833 is exhausted.

Use the number lookup at the top of this site. Paste any toll-free number in any format (1-800-FLOWERS, 8003569377, 800-356-9377) and we'll show the current RespOrg plus the full 4-year ownership history.

Yes, if you own it. Any RespOrg is required to release numbers their customers own on request. Contact your current RespOrg and ask for a release to the new RespOrg's code. If they refuse or don't respond, Somos has a formal dispute process.

Sharks sometimes hold numbers and won't release them even when a customer has a legitimate claim. If you're stuck, ask us — we've helped thousands of customers navigate releases over the years.

Somos doesn't require RespOrgs to publish contact information publicly, and many don't. Some RespOrgs are pure number-holding operations with no customer-facing presence at all. If you land on this site because your carrier told you "RespOrg X has the number you want," we can usually help.

When you disconnected the number, it went into an aging pool for 45–90 days. After aging, it returned to Somos's spare pool, where any RespOrg could claim it. Specific RespOrgs (the "sharks") specialize in harvesting recognizable numbers the moment they become available, then run misdial-marketing operations on them.

Unfortunately, once a number has been through disconnect, there's no way to retroactively prevent the harvest. The best defense is to never let a number you care about go into disconnect in the first place — even if you're not using it, keep it active with the original RespOrg.

The industry is dominated by a handful of wholesale carriers — Twilio (5.4M numbers), Bandwidth (6.8M), Verizon Business (4.5M), AT&T (2.2M) — that each serve thousands of business customers. On the other end, many RespOrgs exist only to hold a handful of numbers for a single corporate client, or to operate niche businesses like vanity number brokering or misdial marketing.

Yes. Some RespOrgs build their business model around harvesting numbers the moment they come out of disconnect — often well-known vanity numbers whose previous owners stopped paying, or numbers tied to defunct businesses whose callers haven't yet updated their records. The harvester then runs "misdial marketing" against the residual call traffic.

It's our measure of how much of a RespOrg's new inventory comes from numbers that were previously owned by other RespOrgs and went through the disconnect pool. A legitimate carrier has an Opportunism Index near zero — they only reactivate their own disconnected numbers, they don't race for other people's.

• Below 5%: legitimate carrier. Accepts new customers and occasionally wins ports from competitors.
• 5% – 20%: mixed. Often vanity brokers and specialty firms.
• Above 20%: harvesting is a core part of the business model.
• Above 50%: almost everything they hold came from somebody else's disconnects. Classic shark behavior.

Many of the 500+ RespOrg codes in the industry are not actually independent companies — they're shell codes operated by the same underlying organization. A group is our mapping of those relationships. Some groups are disclosed publicly (AT&T operates under 11 codes; Lumen under 11). Others are quietly operated by a single entity using distinct-sounding names to blur their footprint.

Groups like Primetel, Flotrax, and Haven Partners are the most aggressive consolidators. Primetel alone operates 18 different RespOrg codes and holds over 5 million toll-free numbers — more than AT&T's total inventory.

A single organization operating under 18 separate RespOrg codes — including Mayfair Communication, WireStar, Crossbow Telecom, Yorkshire Telecom, Unilink, Zipline, Bluekey, Beckham, PrimeTel itself, Nextway, Coore, and the Flotrax family (Flotrax, AB, HU, OD, OQ, RY, JD). Combined, Primetel controls over 5.2 million toll-free numbers, making it larger than AT&T.

Primetel almost never sells or releases numbers to customers at any price. We've called them "The Black Hole" for 20 years because numbers that enter their system almost never come back out. Their Opportunism Index is moderate because most of their inventory is long-held rather than freshly harvested — but spikes in harvest activity (like the April 2026 Lumen dump) consistently see Primetel take the biggest share.

Somos publishes a "Number Status Report" monthly containing the status and current RespOrg of every active toll-free number in the registry. We subscribe to that report, parse it, and compute diffs between consecutive months to reveal transfers, disconnects, first-assignments, and harvest events. The analysis on this site covers 42 monthly snapshots from June 2022 through April 2026 — roughly 4 years of complete industry activity.